SQL, or Structured Query Language, is a commonly used programming language for managing data in relational databases. A SQL Developer helps with the design, development and maintenance of databases. They ensure that the databases work correctly and efficiently and can also create testing procedures. With the help of a SQL Developer, clients are able to get an efficient system for managing their company data. By developing secure and reliable databases, businesses can maximize their potential and streamline all processes.

Here's some projects that our expert SQL Developers made real:

  • Improving query speed and accuracy on large datasets
  • Implementing views and stored procedures for quick retrieval of data
  • Designing database tables to store all types of data
  • Automating processes to reduce manual work while working with databases
  • Creating an efficient search function using complex SQL queries
  • Providing insights into data by creating analytical models

SQL is an invaluable tool for businesses today in managing their data efficiently. Our experienced SQL Developers help clients by developing a secure and reliable database that meets their needs. With the help of a SQL Developer, clients can ensure that their database systems work correctly and with maximum efficiency.

If you're looking for an expert SQL Developer to create efficient databases or enhance your existing systems, here at Freelancer.com you will find the perfect contractors for the task. Our wide network of talents has put together many successful SQL projects for satisfied customers around the world today. So if you're ready to take your business to the next level, post your project now on Freelancer.com and hire an expert SQL Developer to work with you on this journey!

A partir das avaliações de 300,231, os clientes avaliam nosso SQL Developers 4.9 de 5 estrelas.
Contratar SQL Developers

SQL, or Structured Query Language, is a commonly used programming language for managing data in relational databases. A SQL Developer helps with the design, development and maintenance of databases. They ensure that the databases work correctly and efficiently and can also create testing procedures. With the help of a SQL Developer, clients are able to get an efficient system for managing their company data. By developing secure and reliable databases, businesses can maximize their potential and streamline all processes.

Here's some projects that our expert SQL Developers made real:

  • Improving query speed and accuracy on large datasets
  • Implementing views and stored procedures for quick retrieval of data
  • Designing database tables to store all types of data
  • Automating processes to reduce manual work while working with databases
  • Creating an efficient search function using complex SQL queries
  • Providing insights into data by creating analytical models

SQL is an invaluable tool for businesses today in managing their data efficiently. Our experienced SQL Developers help clients by developing a secure and reliable database that meets their needs. With the help of a SQL Developer, clients can ensure that their database systems work correctly and with maximum efficiency.

If you're looking for an expert SQL Developer to create efficient databases or enhance your existing systems, here at Freelancer.com you will find the perfect contractors for the task. Our wide network of talents has put together many successful SQL projects for satisfied customers around the world today. So if you're ready to take your business to the next level, post your project now on Freelancer.com and hire an expert SQL Developer to work with you on this journey!

A partir das avaliações de 300,231, os clientes avaliam nosso SQL Developers 4.9 de 5 estrelas.
Contratar SQL Developers

Filtro

Minhas pesquisas recentes
Filtrar por:
Orçamento
para
para
para
Tipo
Habilidades
Idiomas
    Estado do Trabalho
    41 trabalhos encontrados

    AWS Data Engineer Needed — 1:1 Mentor/Tutor to Teach AWS Data Engineering Category: Data Engineering / Cloud Computing / Tutoring & Mentoring Description: I'm looking to build strong AWS Data Engineering skills from the ground up and want an experienced AWS Data Engineer to act as a personal tutor/mentor — covering core concepts, tools, and hands-on skills needed to work as a data engineer on AWS. What I'm looking for: 1:1 sessions (video call) covering AWS data engineering fundamentals and hands-on labs Coverage of core services: S3, Glue, Redshift, Athena, Kinesis, Lambda, EMR, Step Functions, RDS/DynamoDB ETL/ELT pipeline design, data lake vs. data warehouse concepts Python/PySpark for data engineering, SQL for analytics Guidance on real-world project work...

    €17 / hr Average bid
    €17 / hr Média
    51 ofertas

    I need a concise descriptive analysis of the data currently stored in my relational database. The tables are already structured and populated; what I lack is a clear, statistics-driven snapshot that highlights key totals, averages, distributions, and any obvious trends or anomalies. You’ll connect directly to the database (credentials supplied after award) and: • explore table relationships and data quality, • run summary statistics and frequency counts, • create straightforward visualizations—think bar plots, histograms, heat-maps—that quickly communicate the story behind the numbers, • package everything into a short, well-commented Jupyter Notebook (or SQL script plus slides, if you prefer) so I can reproduce the results at any time. Plea...

    €30 / hr Average bid
    €30 / hr Média
    33 ofertas

    I want to extend my Dolibarr installation with a small module that lets me attach JPEG product images directly from the product card and enter one or more manual tags at the moment of upload. The goal is to make daily catalogue maintenance quicker: staff should be able to drag-and-drop a .jpg, type the tags, save, and instantly see the image in the gallery section of the product together with its tags. Key points • Only JPEG files have to be accepted, with basic size validation and automatic thumbnail generation. • Tags are plain-text keywords entered by the user; they need to be stored in the database and displayed under each image, with the ability to filter/search products by those tags later on. • The solution must respect Dolibarr’s module guidelines so I...

    €16 / hr Average bid
    €16 / hr Média
    63 ofertas

    I run a finance operation that relies on up-to-the-minute market data. What I need now is a streamlined MIS process that turns those feeds into clear, insightful reports and dashboards. You’ll work with market data exclusively, shaping it end-to-end: extracting with SQL, modelling in Excel for quick ad-hoc views, and visualising in Tableau for daily management reporting. Everything must refresh automatically so my team can focus on decisions, not data wrangling. Deliverables • SQL scripts that pull and aggregate the required market data on a schedule • An Excel model with clean, pivot-ready tables and scenario analysis sheets • Interactive Tableau dashboards (published to our server) featuring drill-downs, KPIs, and one-click PDF exports • A concise hand...

    €4 / hr Average bid
    €4 / hr Média
    11 ofertas

    I developed an interactive E-Commerce Sales & Performance Dashboard to analyze sales data and help businesses understand their overall performance. Key Features:- Sales and profit performance analysis Monthly and yearly sales trends Product/category-wise sales analysis Customer performance analysis Top-performing and low-performing products Regional/location-wise sales analysis Profit and revenue comparison Interactive filters for better data exploration KPI cards for quick business insights The dashboard helps identify: Which products generate the highest revenue Which categories are most profitable How sales change over time Which regions contribute the most sales Top customers and products Areas where sales or profitability can be improved Tools & Skills Used Excel / Power BI...

    €173 Average bid
    €173 Média
    22 ofertas

    I have an existing SQL database that needs regular, accurate data entry and ongoing management. The core of the work is keeping every record current, validating each new entry against our existing tables, and running simple queries to confirm that key fields stay consistent over time. You will receive raw data files (mostly CSV) on a scheduled basis. I’ll expect you to import them, reconcile any duplicates, flag inconsistencies, and confirm successful inserts. Familiarity with basic normalization rules, foreign-key constraints, and indexing is important because I want the tables to remain fast and reliable as they grow. Deliverables: • Cleaned, imported data sets fully integrated into the SQL database • A brief log of changes, issues found, and resolutions for each ba...

    €8 / hr Average bid
    €8 / hr Média
    24 ofertas

    I want a sleek, self-refreshing Power BI dashboard that pulls customer counts from two sources—an Excel file and our Databricks environment—and visualises the 12-month trend for each line of business across Brand A, Brand B and Brand C. The core visual should be clean line charts with a rolling monthly view, allowing users to toggle brands or drill down by product line without losing the last-year perspective. You will work with my existing Databricks SQL endpoint (I’ll share the cluster URL and credentials) and a locally stored Excel workbook. I need the model set up so both sources refresh automatically through the Power BI gateway and any new month appended to either source rolls straight into the visuals. Deliverables • A .pbix file containing the data model, r...

    €375 Average bid
    €375 Média
    104 ofertas

    Our in-house document management platform has been running smoothly on a C#/.NET stack, MS SQL Server, and AWS for several years, but the developer who built and nurtured it is leaving. I need someone who can step in right away, understand the codebase, and keep the application stable and performant. The immediate focus is routine maintenance—diagnosing and fixing any bugs that surface and squeezing better performance out of the code, database, and AWS resources. I don’t have a current list of issues, yet I suspect the usual mix of edge-case errors and slow queries will emerge once you start profiling the system. You’ll get full access to the Git repository, SQL scripts, and our AWS environment (EC2, RDS, S3). A thorough walkthrough with the departing developer can be a...

    €13 / hr Average bid
    €13 / hr Média
    142 ofertas

    Power BI – Talent Acquisition Control Tower & Executive Dashboard We are looking for an experienced Power BI Developer / HR Analytics Specialist to build a comprehensive Talent Acquisition Control Tower & Executive Dashboard. This is not a basic visualization project. We need a scalable recruitment analytics solution covering the full recruitment lifecycle: Requisition → Sourcing → Screening → HM Review → Interview → Selection → Offer → Acceptance → Joining → Closure The solution must support both daily recruitment operations and executive-level reporting. 1. Recruitment Overview & Demand vs Delivery Track: * Total Requisitions * Total Openings/Vacancies * Open / Closed / Hold / Cancelled * Sourcing / Interview / Offer /...

    €70 Average bid
    €70 Média
    30 ofertas

    I have a production oracle instance that has grown beyond 100 GB and it now needs to live on SQL ,Server postgres sql . The task covers everything from preparing the source, mapping the schema, transferring the data, and validating that every object—tables, views, functions, and constraints—behaves exactly the same once it lands in SQL Server. Here is what I expect to walk away with: • A fully migrated SQL Server database, ready for cut-over • A repeatable migration script or SSIS/ADF/DMS pipeline so I can re-run the process for future refreshes • A concise migration report highlighting any datatype conversions, performance tweaks, and objects that required special handling • Verification scripts or queries that prove row counts, checksums, and refe...

    €10 / hr Average bid
    €10 / hr Média
    23 ofertas

    I’m putting together a lightweight ERP foundation and need a clean, well-structured VB.Net solution that I can grow over time. The stack is fixed—VB.Net with DevExpress WinForms controls on the front end and PostgreSQL on the back. Core scope The project centres on three building blocks: a secure login screen, a ribbon-style main menu, and one fully functional CRUD form that will serve as the model for future modules. Authentication must recognise three separate roles—Administrator, Manager, and Employee—and enforce granular permissions once the user is inside the application. Main menu expectations After a successful login the user should land on a DevExpress-based menu that exposes the Reporting Module, Settings & Preferences, and User Management. Menu...

    €477 Average bid
    €477 Média
    162 ofertas

    I need an Oracle APEX application that streamlines one of our internal business processes from start to finish. The focus is a clean, permission-based workflow that automatically routes each new record through a multistep approval cycle. At a minimum the app must: • Capture data through responsive APEX forms • Trigger an approval workflow the moment a record is submitted • Update status, log every decision, and prevent users from skipping steps When an approver acts, the system should move the item to the next stage, send the correct email or in-app notification, and maintain an audit trail we can export to CSV or view in a dashboard. I will provide table definitions and sample data; you’ll translate that into APEX pages, processes, and any PL/SQL packages req...

    €9 / hr Average bid
    €9 / hr Média
    33 ofertas

    I’m kicking off a new healthcare patient-management system and the first critical piece is a rock-solid, compliant data layer. The entire scope at this stage revolves around database management—designing, building, and documenting a schema that can safely house patient records, appointments, clinical notes, and billing details while meeting HIPAA-level security expectations. Here’s what I need from you: • Analyse typical patient-care workflows and translate them into an efficient relational model. • Deliver an ER diagram, a fully normalised schema, and an indexing strategy suitable for high-volume queries. • Implement the model in the SQL engine you recommend (PostgreSQL, MySQL, or MS-SQL are all fine if they cover encryption-at-rest, robust backup, a...

    €217 Average bid
    €217 Média
    36 ofertas
    Tablet-Based IoT Tool Inventory
    4 dias left
    Verificado

    I need a purpose-built IoT inventory platform that keeps every tool in my auto shop accounted for and instantly searchable from a tablet on the workshop floor. The interface has to feel at home on an iPad or similar device—large touch targets, quick loading times, and an offline-tolerant design so my technicians can still work if Wi-Fi drops for a moment. Core workflow Technicians will scan or tap a tagged tool, confirm where it is going, and the system updates our stock level and location log. When a tool hasn’t been returned or its quantity falls below a preset threshold, the platform should flag it on the dashboard and optionally push a notification. I’m open to common tag technologies such as BLE or passive RFID; the software just needs a clean way to map tag IDs to ...

    €6 / hr Average bid
    €6 / hr Média
    138 ofertas

    I have a collection of well-formatted CSV files and a live SQL database that I need to turn into clear, insightful visuals. The core of this engagement is data visualization—using Python to translate rows and columns into plots, dashboards, or interactive charts that quickly communicate trends and outliers to non-technical stakeholders. You will have direct access to the structured data; most of it is already clean, so the emphasis is on choosing the right libraries (Pandas, Matplotlib, Seaborn, or Plotly—whatever suits the story best), crafting reusable code, and presenting the results in a concise, easy-to-update format. If you are comfortable adding light data-cleaning steps or basic statistical summaries along the way, that flexibility is welcome, but not required. De...

    €37 / hr Average bid
    €37 / hr Média
    134 ofertas

    I have a growing file of U-S customer email records that first need to be keyed in accurately and then grouped into meaningful customer segments. The work starts with straightforward data entry—importing every record exactly as provided into a master spreadsheet or my HubSpot CRM—before moving on to customer segmentation that relies on one critical attribute: each contact’s Medical code. Once every line is in place, I’d like you to segment the list so I can target campaigns with precision. Feel free to use Excel, Google Sheets, or an SQL-friendly tool for the entry phase; for the segmentation itself, you can stay in the same environment or switch to Python / R if that speeds things up. Consistency and zero typos are essential because these addresses feed directly...

    €9 / hr Average bid
    €9 / hr Média
    20 ofertas

    Developer Brief Build a secure, cloud-based sports performance data platform that consolidates data from multiple technology providers into one dashboard. This is an example dashboard I have built The initial scope is to integrate Catapult Sports, VALD, and Teamworks. The platform must support both API-based data ingestion and manual or automated uploads of Excel/CSV files. API connections should retrieve approved data on a scheduled basis, while spreadsheet imports should validate, map, and standardise fields before storage. Create a central database with a consistent athlete profile and identifiers, enabling data to be matched across systems. Athlete matching should prioritise unique IDs and verified email addresses, with an administrator review process for unmatched or duplicate rec...

    €657 Average bid
    ADC
    €657 Média
    122 ofertas

    I want to commission a full-featured hospital management system that natively integrates with the Ayushman Bharat Digital Mission (ABDM) stack. The application must streamline day-to-day operations for Out-Patient, In-Patient and Emergency departments while guaranteeing smooth data exchange with ABDM services such as Health ID creation, HIP/HIE-CM consent flows and e-prescriptions. Core modules I need: • Patient management covering registration, OPD/IPD admissions, discharge summaries and encounter history that can be shared via ABDM. • Inventory management for pharmacy and medical supplies with real-time stock, expiry and reorder alerts. • Billing & accounting that supports cashless, insurance and government scheme workflows, generates GST-compliant invoices and ...

    €21 / hr Average bid
    €21 / hr Média
    53 ofertas

    En lo técnico necesito nivel sólido de React con TypeScript y buen manejo de SQL (consultas, esquemas, optimización básica). El punto clave es Claude Code: buena parte del código existente fue generado con esa herramienta, así que necesito a alguien que sepa leer y entender esas estructuras sin perderse, y que además trabaje con ella de forma eficaz — gestionando bien el contexto, iterando y revisando el output. No busco ni a quien la use a ciegas ni a quien la evite. Más allá del stack, valoro la autonomía: te doy el objetivo y lo resuelves. Entregas completas, sin dejar cosas a medias. Comunicación directa y rápida. Y criterio para decirme que algo está mal planteado antes de construirlo, no...

    €359 Average bid
    €359 Média
    264 ofertas

    I’m rebuilding a web application from scratch and need a seasoned JavaScript developer who is equally comfortable on the browser and in Node.js. On the front-end I want clean, intuitive screens, a fully responsive layout, and smooth API integration. I’ll rely on you not only to code those pieces but also to show me the best way to push user-generated data up to a database. Server-side, you’ll wire everything together in Node.js and expose the endpoints the UI depends on. Part of the work involves calling Claude AI, so familiarity with its SDK, streaming responses, and prompt design will save us a lot of trial and error. I haven’t settled on a data store yet—SQL or NoSQL are both on the table—so I’d value your guidance on choosing and provisio...

    €574 Average bid
    €574 Média
    529 ofertas

    Senior Data / AI Engineer - Marine Data, APIs, Web Scraping & Machine Learning We are building a new AI-powered technology platform that works with large amounts of marine, oceanographic, weather, environmental, geographic and destination data. We are looking for a strong Data / AI / Machine Learning Engineer to help build the data and intelligence infrastructure behind the platform. This is not primarily a frontend or UI development role. We need someone who is very comfortable working with large datasets, APIs, web scraping, automated data pipelines, geospatial data, historical and forecast data, oceanographic datasets, and scoring/recommendation models. Experience working with marine weather, oceanographic, coastal or environmental data is a major advantage. What you will work...

    €18 / hr Average bid
    €18 / hr Média
    163 ofertas

    We are looking for an experienced Software / System Architect to design and review the architecture of a closed-loop financial platform. The platform includes user accounts, balances, transactions, deposits/withdrawals, trading, payments, wallet functionality, and administration. We already have a development team and an existing system. We need an architect who can review the current setup, identify gaps, design the overall system architecture and flows, and provide clear technical guidance and architecture documentation for our developers. Experience with FinTech, payment systems, trading platforms, digital assets, banking, or other transaction-heavy financial systems is highly preferred. Please share relevant architecture experience and examples of similar systems you have worked on...

    €123 Average bid
    €123 Média
    40 ofertas

    I am building an end-to-end Python solution that automatically ingests, processes, and reports on financial data pulled from CSV files, SQL databases, and live APIs. Clean, well-structured, and easily maintainable code is essential because the system will be extended over time. Scope of work You will take the project from initial design through deployment. That includes setting up the data-collection pipeline, writing transformation and analysis modules, implementing robust error handling and logging, building unit / integration tests, and preparing a production-ready deployment script or container. The stack is entirely Python, so I expect idiomatic use of tools such as pandas, SQLAlchemy, asyncio, and, where it adds value, lightweight AI/ML components for anomaly detection or forecast...

    €905 Average bid
    €905 Média
    72 ofertas

    Cloud Pricing Validation & Test Automation Framework Designed and developed an end-to-end Python automation framework to scrape and validate cloud pricing data from AWS and Azure platforms. Built Selenium-based UI automation using the Page Object Model (POM) and PyTest framework to validate pricing calculators, search functionality, filters, and region selection. Implemented API validation using the requests library to compare pricing data with scraped UI data. Automated data storage in SQLite and performed SQL-based validation for duplicates, missing values, and historical price comparison. Generated HTML execution reports, detailed logs, CSV/Excel summaries, and dashboards to monitor pricing changes and regression results. Integrated modular architecture with reusable utilities, con...

    €89 Average bid
    €89 Média
    42 ofertas

    SAP S/4HANA Greenfield Implementation for Procure-to-Pay (P2P) Description Implemented end-to-end SAP S/4HANA solution using SAP MM for procurement and inventory processes, ensuring seamless system transition with high data accuracy. Roles &Responsibilities ? Configured end-to-end Procure-to-Pay (PR, PO, GR, LIV) in SAP S/4HANA, improving procurement efficiency by 20%. ? Designed and configured pricing procedures and account determination (OBYC), reducing invoice mismatches by 25%. ? Set up enterprise structure and master data (Material Master & Business Partner) for procurement processes. ? Executed data migration using LSMW/Migration Cockpit with 99% data accuracy. ? Implemented subcontracting and consignment processes for complex procurement scenarios. ? Ensured seamless cross-m...

    €4135 Average bid
    €4135 Média
    15 ofertas
    SQL Foundations Tutor Required
    2 dias left
    Verificado

    CORE-103 Data & SQL Foundations. 10 topics. Almost every system these students build or support will store its data in a relational database, and almost every serious production incident involves one. From what a database is for through querying, joins and aggregation to schema design, transactions and indexing. Real time goes to reconciliation - checking that a query returned the RIGHT answer rather than a plausible one - because a wrong number delivered confidently is worse than no number at all. Note: this course shares ground with DB-101, the Databases track foundation, at a much shallower depth. You will be asked to coordinate with that trainer so the two reinforce rather than repeat each other. THE 10 TOPICS — FIXED 1. What a database is for (6 h) - persistence, con...

    €22 / hr Average bid
    €22 / hr Média
    107 ofertas

    I have a dataset that must be loaded into our online database without errors and, at the same time, I want the source text that accompanies each record rendered in both Spanish and simplified Chinese. All source material is in English and arrives as clean text files; your job is to: • Populate every field in the database exactly as specified in the schema I will share (SQL-based back-end with a web form for input). • Translate the English content into Spanish and Chinese before the final save, keeping sentence structure natural and industry terminology consistent. I will give you step-by-step screencasts on how to access the system, a glossary of preferred terms, and a small test batch so we can confirm quality. I expect native-level accuracy in both languages, correct char...

    €8 / hr Average bid
    €8 / hr Média
    8 ofertas

    I’m looking for onsite training in Oracle Fusion Cloud Procurement who is located in Bangalore near by electronic city. I'll be coming to your location to learn any project you have done on below mentioned modules. My immediate focus spans the following functional areas: • Supplier Management • Sourcing • Procurement Contracts • Self Service Procurement . integrations Day to day, I may ask you to review or adjust existing configurations, troubleshoot workflow or approval issues, walk me through best-practice setups, and document any changes so I can maintain them moving forward. Clear explanations, quick turnaround on questions, and the ability to share screens while we work through solutions will be essential. If you have proven experience guidi...

    €152 Average bid
    €152 Média
    7 ofertas

    The project centres on my raw sales data, delivered to you in a mix of CSV files and Excel spreadsheets. I need the full analytical pipeline built and documented so that anyone in my team can reproduce it. First, consolidate every source in Excel and use Power Query to remove duplicates, fix date and currency formats, and create calculated columns that will later support trend analysis, sales-performance comparisons and customer segmentation. Keep the transformation steps clearly named and ordered so that refreshing future files is one click. Next, publish the cleaned table to Power BI and design an interactive, professional-looking dashboard. Key visuals should highlight monthly and quarterly trends, compare performance across product lines or regions, and let the user dive into custome...

    €25 Average bid
    €25 Média
    40 ofertas

    Analyzed sales data using Excel, SQL and Power BI to identify sales trends, top-performing products, revenue insights and business performance. Created an interactive Power BI dashboard with KPIs and visualizations to help users understand the data and make better business decisions.

    €8 / hr Average bid
    €8 / hr Média
    22 ofertas

    I have a two-part project that blends data science with creative rendering. First, I need to mine our operational data to uncover clear, actionable insights that will streamline internal workflows. You’ll have direct access to our raw logs and performance metrics; from there, I’m expecting clean data pipelines, exploratory analysis, and models or dashboards that highlight where we can cut cycle time, reduce error rates, and better allocate resources. Python (Pandas, scikit-learn), SQL, or a similar stack is ideal, but I’m open to the tools you find most efficient as long as the findings are reproducible and clearly documented. Second, I want a series of polished 2D and 3D character renders that visualize key personas involved in those optimized processes. Think engagin...

    €423 Average bid
    €423 Média
    59 ofertas

    I have several enterprise-scale integration and data-migration initiatives kicking off right now and need an Azure Data Factory specialist who can jump in immediately for at least the next two months. The work centres on building, troubleshooting and optimising ADF pipelines that: • extract data from SQL Server and other database engines, plus a range of APIs (including Salesforce and S3 endpoints), • apply complex, rule-driven transformations, and • load cleansed results into a variety of target systems. You will own the whole lifecycle—from designing linked services and parameterised datasets, to writing highly-tuned SQL, to setting up monitoring and alerting so everything runs reliably at scale. I’ll look to you to surface and solve performance issues ...

    €599 Average bid
    €599 Média
    14 ofertas

    Our company has amassed a rich set of customer data from CRM, support tickets, and usage logs, and I need a full prescriptive analysis that pinpoints actions we can take to boost retention. The work goes beyond describing what has happened; I need to understand why customers leave, simulate what-if scenarios, and receive clear, prioritized recommendations I can implement right away. You will have direct access to anonymized customer records, churn labels, engagement metrics, and marketing touchpoints. I expect you to apply statistical modeling or machine-learning techniques of your choice, validate findings rigorously, and convert them into concrete retention strategies—loyalty offers, upsell timing, personalized messaging, or workflow changes—complete with expected impact. D...

    €63 Average bid
    €63 Média
    28 ofertas

    Our company has amassed a rich set of customer data from CRM, support tickets, and usage logs, and I need a full prescriptive analysis that pinpoints actions we can take to boost retention. The work goes beyond describing what has happened; I need to understand why customers leave, simulate what-if scenarios, and receive clear, prioritized recommendations I can implement right away. You will have direct access to anonymized customer records, churn labels, engagement metrics, and marketing touchpoints. I expect you to apply statistical modeling or machine-learning techniques of your choice, validate findings rigorously, and convert them into concrete retention strategies—loyalty offers, upsell timing, personalized messaging, or workflow changes—complete with expected impact. D...

    €51 Average bid
    €51 Média
    27 ofertas

    My priority is to build and refine Microsoft Dynamics 365 Business Central through new AL objects, with the spotlight on custom tables and pages. These pages must support clean data entry, run their own validation, trigger custom workflows, and surface key metrics in dashboard-style reports. Beyond the UI layer, I need business logic that enforces bespoke validation rules and handles data integration processes so information moves reliably between internal modules and any external systems we connect later. Additional work will include, when required, adjusting RDLC or Word layouts for reports, extending posting and approval workflows, exposing data through APIs or web services, and tuning SQL for performance. Deliverables • AL code for tables, pages, and supporting codeunit...

    €238 Average bid
    €238 Média
    29 ofertas

    I have several datasets coming in from different systems where the numeric fields are stored as plain ASCII files in some cases and UTF-8 exports in others. My goal is to run solid, reproducible data analysis on them, but first they need to be cleaned and standardised. Here is what I need from you: • Build a repeatable cleaning pipeline in Python (Pandas, NumPy) that detects the file encoding, converts everything to UTF-8 where necessary, and validates that all numeric columns are truly numeric—no stray characters, misplaced separators, or locale-specific quirks. • Where the raw files already sit in SQL Server, create T-SQL or Python-based routines that achieve the same checks and corrections in-database so I can schedule them in an Agent job. • Document each s...

    €22 / hr Average bid
    €22 / hr Média
    121 ofertas
    Recover InnoDB Data & Backup
    12 horas left
    Verificado

    My MySQL 5.5.18 instance is limping along after a corruption event—system tables open, but every InnoDB table throws errors. The server is only “partially functional,” so I have powered it down and kept all data files intact (ibdata, ib_logfile*, .frm, .ibd, relay/binlogs, ). Remote log-in isn’t possible; you will need to walk me through everything step-by-step while I work directly on the box. What I need is a complete, reliable FULL backup of every database, including the damaged InnoDB tables, so I can spin up a fresh 5.7+ server later. I am comfortable following detailed terminal commands; I just need an expert plan and real-time guidance to: • Mount the data directory in a safe environment (ideally using Percona XtraBackup, mysqlbackup, or a comparable t...

    €76 Average bid
    €76 Média
    25 ofertas

    I manage our university’s Student Information System and need a technically savvy partner to keep it running at peak performance while we expand its capabilities. Day to day, the work ranges from fine-tuning system configuration, maintaining a clean permission hierarchy, and automating routine admin tasks, through to digging into database queries when the system slows down or an integration drops data. You’ll be hands-on with: • System configuration & ongoing management • User account lifecycle, roles, and permissions • Reporting, analytics, and custom queries Current pain points I want resolved quickly: • Intermittent performance slow-downs during high-traffic periods • Data integration failures between the SIS and our LMS/HR platforms ...

    €57850 Average bid
    €57850 Média
    57 ofertas

    I have raw sales tables sitting in a SQL-based database and I need them transformed into a clean, interactive dashboard that lets me track monthly revenue growth at a glance. The core KPI is that single figure, but the design should leave room for additional views—regional performance comparisons and top-selling category trends—so the board can evolve without a rebuild. You’re free to use the platform you feel delivers the best user experience; Tableau, Power BI, or even Google Data Studio are all acceptable as long as the final product is fast, visually clear, and can connect directly to my SQL schema. I’ll provide database credentials and an ERD. You’ll handle the data pull, modeling, and visual layout, then publish or package the dashboard so I can share i...

    €176 Average bid
    €176 Média
    76 ofertas

    # Data Engineer – Remote Contract We are looking for an experienced Data Engineer to join a remote technical project supporting an international client. * It is an open contract and you get paid monthly. ### Requirements • 2–4 years of professional Data Engineering experience • Strong Python and SQL skills • Hands-on experience with Apache Spark • Experience with Airflow, Dagster, or Prefect • Experience with dbt and modern data pipelines • Knowledge of Snowflake, BigQuery, Redshift, or Databricks • Experience with AWS, Azure, or GCP • Strong understanding of data modeling and Git workflows • Experience working with production data pipelines • Strong spoken and written English communication skills ### Nice to Have • K...

    €1214 Average bid
    €1214 Média
    43 ofertas

    We are seeking an experienced Full Stack Developer to support the development and enhancement of modern web applications. The ideal candidate will have strong experience building scalable front-end and back-end solutions, developing APIs, working with databases, and collaborating with engineering teams to deliver high-quality software. The role involves developing and maintaining user-facing applications using technologies such as React, Angular, Node.js, .NET, or Java. Responsibilities include building and integrating REST APIs, working with SQL and NoSQL databases, troubleshooting application issues, improving existing features, participating in code reviews, and supporting continuous improvement of development practices. Experience with Git workflows and cloud deployment environments...

    €20 / hr Average bid
    €20 / hr Média
    417 ofertas

    Artigos Recomendados Só para Você