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Juan C.

@juanjosec63

verified-v3.svgpreferred-freelancer-v3.svg
4.8
26

6.2

6.2

100%

Fullstack | C# .Net Core | Game | Mobile | Azure

$35 USD / Hour

・

Flag of COLOMBIA

Colombia (7:46 PM)

・

Joined on May 15, 2025

・

5 Recommendations

$35 USD / Hour

・

Hello! I'm Juan Jose C, a full-stack developer experience in building modern web app, game and integrating AI features. I specialize in creating dynamic, scalable solutions with a focus on AI-driven functionality, using technologies like C#, .Net, Core, WebGL, Three.js, Angular, React, Next.js, Node.js, Vue.js and Tailwind CSS. I also leverage the latest and most popular AI code tools to write fast, efficient, and scalable code, ensuring top-tier performance and innovation in every project. My Main Skills: Frontend: React, Next.js, Vue.js, TailwindCSS, Shadcn Backend: Node.js, Express, Laravel, Python, Django, REST APIs, FastAPI, GraphQL, WebSocket, [login to view URL] AI & LLMs: OpenAI (GPT-4, ChatGPT), Chatbot, LangChain, Cohere, Pinecone Cloud & Deployment: Vercel, AWS, Firebase Database: MySQL, MongoDB, PostgreSQL, Supabase, Adrant, ChromeDB Tools: Cursor, Lovable, [login to view URL], [login to view URL], Zed, Warp, Figma

Verifications

On time

94%

On budget

100%

Accept rate

48%

Repeat hire rate

24%

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Portfolio

Portfolio

13858381
Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

13037490
I developed the base structure for Cleaning Elevation Podcast, a platform where users can stream and subscribe to podcasts. Using Lovable.dev, I quickly scaffolded the UI, then focused on scaling and backend integration. I added secure user authentication with Supabase, handled API key validation, and implemented Edge Functions for performance and scalability. I also integrated YouTube video support for episodes, giving users multiple ways to consume content.

Cleaning Elevation Podcast - Lovable

13037484
Users can simply enter a description, and the app uses advanced AI models to create unique images for everything from concept art to social media visuals. I handled the full frontend build using React, TypeScript, Next.js, and TailwindCSS, focusing on a clean UI, responsive design, and smooth user interactions.

Dream AI

13037476
I built a lightweight, responsive single-page shop assistant app using pure HTML, CSS, and JavaScript. I focused on clean UI/UX, fast load times, and seamless interactivity using vanilla JS for DOM manipulation and local state handling. While the project uses no frameworks, I also have strong experience with React and SCSS, and often apply those in production-grade apps.

Shop Assitant

13037474
I handled the fullstack development, including multi-model integration, chatbot creation tools, user authentication, and a frontend dashboard for managing bot settings. End users can chat directly with the bots through a sleek UI that supports real-time messaging and contextual memory.

Supennind Bot

13037469
I built the fullstack solution from scratch — from the conversation logic and AI integration, to the UI/UX and backend. The chatbot was trained with mental health-focused prompts and resources, ensuring safe and empathetic interactions. I also implemented user session handling, message history, and content filtering to ensure privacy and reliability.

Budds AI

13858381
Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

Corner revolution (corner-based transitions) in Three.js is a modern UI/UX pattern where elements appear, transform, or “unfold” from screen corners using 3D animations. Combined with

Three.js website

13037490
I developed the base structure for Cleaning Elevation Podcast, a platform where users can stream and subscribe to podcasts. Using Lovable.dev, I quickly scaffolded the UI, then focused on scaling and backend integration. I added secure user authentication with Supabase, handled API key validation, and implemented Edge Functions for performance and scalability. I also integrated YouTube video support for episodes, giving users multiple ways to consume content.

Cleaning Elevation Podcast - Lovable

13037484
Users can simply enter a description, and the app uses advanced AI models to create unique images for everything from concept art to social media visuals. I handled the full frontend build using React, TypeScript, Next.js, and TailwindCSS, focusing on a clean UI, responsive design, and smooth user interactions.

Dream AI

13037476
I built a lightweight, responsive single-page shop assistant app using pure HTML, CSS, and JavaScript. I focused on clean UI/UX, fast load times, and seamless interactivity using vanilla JS for DOM manipulation and local state handling. While the project uses no frameworks, I also have strong experience with React and SCSS, and often apply those in production-grade apps.

Shop Assitant

13037474
I handled the fullstack development, including multi-model integration, chatbot creation tools, user authentication, and a frontend dashboard for managing bot settings. End users can chat directly with the bots through a sleek UI that supports real-time messaging and contextual memory.

Supennind Bot

13037469
I built the fullstack solution from scratch — from the conversation logic and AI integration, to the UI/UX and backend. The chatbot was trained with mental health-focused prompts and resources, ensuring safe and empathetic interactions. I also implemented user session handling, message history, and content filtering to ensure privacy and reliability.

Budds AI

4.8 · 26 Reviews
26 Reviews
User Avatar
Flag of UNITED STATES

John S.

5.0

$100 USD

29 days ago

FullSource

Reliable, and no back-and-forth needed. Exactly what I was looking for.

PHP
Python
Software Architecture
MySQL

+1 more

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Flag of UNITED STATES

John S.

5.0

$290 USD

1 month ago

Project for special domain scraper

Juan nailed it, delivered exactly what was needed, fast, with zero revisions. Would hire again without hesitation.

PHP
Python
Software Architecture
MySQL

+1 more

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Flag of MEXICO

Mario Y.

5.0

$300 USD

1 month ago

Integración Completa de WhatsApp Business API, Pagos y POS -- 2

Muy Bien y siempre atento a mis requerimientos

PHP
Python
Software Architecture
HTML
Node.js

+2 more

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C
Flag of UNITED STATES

Chad D.

2.2

$750 USD

1 month ago

Business Contact Data Scraping

Not happy at all with his work.

Python
Data Entry
Web Scraping
Software Architecture
Data Mining

+3 more

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Flag of MEXICO

Noe A.

5.0

$250 USD

2 months ago

Implementar Suscripciones en WooCommerce

Es una persona con buena comunicación y se nota el profesionalismo.

PHP
JavaScript
WordPress
HTML
WooCommerce

+5 more

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Experience

FULLSTACK DEVELOPER

Apr, 2024 - Aug, 2024

•

4 months, 1 day

CIVEL S.A.S.

Apr, 2024 - Aug, 2024

•

4 months, 1 day

- Automate software development tasks. - Efficient database management according to requested requirements. - Proper management of existing server libraries. - Facilitate navigation and enhance user experience. - Developed web structure and architecture for proper information organization.

Flag of COLOMBIA

Barranquilla, Colombia

Apr, 2024 - Aug, 2024

•

4 months, 1 day

SOFTWARE SUPPORT ENGINEER

May, 2023 - Dec, 2023

•

7 months

CIVEL S.A.S.

May, 2023 - Dec, 2023

•

7 months

- Creation of forms in the work environment for auditing processes. - Validation of errors in the system.

Flag of COLOMBIA

Barranquilla, Colombia

May, 2023 - Dec, 2023

•

7 months

ADMINISTRATIVE ASSISTANT

Mar, 2021 - Mar, 2022

•

1 year

Universidad del Norte

Mar, 2021 - Mar, 2022

•

1 year

- Delivery of task reports and presentation of the fulfillment of the objectives of the Systems Engineering department. - Scheduling of internal meetings. Performed session template logistics and venue preparation to ensure proper follow up. - Developed and executed an efficient documentation system. - I supported the ABET accreditation process for the Systems Engineering program.

Flag of COLOMBIA

Barranquilla, Colombia

Mar, 2021 - Mar, 2022

•

1 year

Education

Universidad del Norte

2019 - 2024

•

5 years

Systems Engineering Program

Flag of COLOMBIA

Colombia

2019 - 2024

•

5 years

Qualifications

Bachelor’s Degree in Systems Engineering

2024

Universidad del Norte

Completed a 5-year Systems Engineering program focused on software development, systems architecture, and research. Contributed to the ABET accreditation process and developed a final degree project involving a predictive academic success web application.

2024

Publications

Development of a Web Application for Academic Success Prediction

2024

Universidad del Norte

Created a web app as part of a research-based degree project to estimate students’ academic success using data-driven techniques. Focused on usability, clean architecture, and effective data handling to support educational decision-making.

2024

Certifications

P

Preferred Freelancer Program SLA

PHP - Level 1

PHP

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