Freelancer profile translated to English.

Description

Fullstack Developer Next.js | React.js | SaaS & AI Agent

I develop SaaS and MVPs in React/Next.js for startups and SMEs, from idea to production, in 4 weeks for a complete MVP.

👉 My role: transforming an idea into a stable, structured, and scalable product.

I leverage AI to accelerate development, while maintaining a strong focus on:

- architecture

- business logic

- code quality

Services offered:

- Create or evolve your MVP & SaaS

- Robust backend & API development

- Integration of key features (payment, real-time, automation)

- Implementation of AI agents, chatbots, and RAG systems

My dual background

Before development, I was a project manager in the construction industry. I understand business constraints and know how to frame a project. Particularly comfortable with vertical SaaS for technical industries (construction, architecture, engineering).

Achievements:

Prescripto

RAG and AI Agent to analyze technical documents (construction)

→ analysis time reduced from ~4 hours to 10 minutes

→ detection of inconsistencies and decision security

Alicia

B2B emailing SaaS with AI agent

→ sequence generation, lead scoring, automation

Huntyscan

Lead analysis tool with AI agent

→ qualification, intelligent sorting, automatic scoring

DivBrainers

E-learning platform with AI agent

→ simulated interviews with voice + analysis

My process:

- A quick discussion to understand your needs

- A clear roadmap with visible steps

- Regular deliveries for quick user testing

# 📩 Have an idea? Contact me (response within 1h) for an initial discussion

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km), Nantes (up to 50km), Bordeaux (up to 50km), Rennes (up to 50km)

Prescripto
Fullstack Developer React.js | Next.js | AI | AI Agent
CIVIL ENGINEERING
February 2026 - Today (4 months)
Lorient, France
→ Mission Objective:

Design an AI document analysis application (RAG + agents) capable of reading, cross-referencing, and verifying technical documents to help project managers make reliable decisions.

→ Achievements:

- Development of a fullstack application (React, Next.js, FastAPI)
- Implementation of a complete document pipeline:
extraction, cleaning, AI classification, vectorization
- Implementation of a RAG system to query hundreds of documents (technical specifications, tender documents, quotes...)
- Development of an AI assistant with sourced and contextualized answers
- Creation of AI agents to detect inconsistencies and business errors
- Multi-user management with data isolation
- Deployment on self-hosted infrastructure

→ Results:

- 10x faster document analysis
- Reduction of errors and inconsistencies between batches
- Improved reliability during the design and construction phases
- Centralized and simplified access to project documents
- Better traceability of technical decisions

→ Technical Stack:

React, Next.js, TypeScript
Python, FastAPI
PostgreSQL, Qdrant
Mistral, RAG, AI agents
Docker, VPS
Fullstack Developer Next.js Developer React.js Developer SaaS Development MVP Creation
Boldys
Fullstack Developer React.js | Next.js | AI Agent
SOFTWARE PUBLISHING
October 2025 - April 2026 (6 months)
Lorient, France
→ Mission:

Design and development of SaaS MVPs and web applications for an agency specializing in automation and AI.

→ Achievements:

- Development of fullstack web applications (React, Next.js)
- Implementation of a robust backend (Deno, Supabase, PostgreSQL)
- Creation of APIs and Edge Functions for business automation
- Integration of AI (OpenAI, Claude) for data generation and processing
- Development of AI agents to automate actions (closing, processing, qualification)
- Setup of Make.com workflows to connect different tools
- Deployment and production launch on Vercel

→ Results:

- Accelerated MVP development
- Automation of repetitive business tasks
- Time savings in prospecting and data processing
- Rapid deployment of usable products

→ Stack:

React, Next.js, TypeScript
Deno, Supabase, PostgreSQL
OpenAI, Claude, Make
GitHub, CI/CD, Vercel
Fullstack Developer React.js Developer Next.js Developer SaaS Development MVP Creation
Huntyscan
Fullstack Developer React.js | Next.js | Supabase | SaaS | AI
SOFTWARE PUBLISHING
July 2025 - February 2026 (7 months)
Lorient, France
→ Mission:

Design an MVP SaaS to automate LinkedIn offer search and analysis using AI agents, to validate a market and then evolve into a scalable, production-ready application.

→ Achievements:

- MVP design and development for market validation
- Development of AI agents for search, analysis, and automatic lead qualification
- Backend structuring (Deno, Supabase, PostgreSQL)
- Creation of secure REST APIs and data flow management
- Integration of OpenAI API for automatic processing and scoring
- Architecture refactoring for MVP → V1 scalable transition
- Performance optimization and production preparation
- CI/CD pipeline setup (GitHub Actions)
- Continuous deployment on Vercel

→ Results:

- Automation of lead search and qualification
- Significant time savings in prospecting
- Rapid market validation via MVP
- Technical foundation ready for scaling

→ Stack:

React, Next.js, TypeScript
Supabase, PostgreSQL
REST API, OpenAI
GitHub Actions, Vercel
Fullstack Developer Next.js Developer React.js Developer SaaS Development MVP Creation

Check out Stevan's experience

Cyril

développement d'appli - ROBERT Cyril

Reviewed on 11/28/2025

I was hesitant to choose a more expensive profile offered by MALT, but I'm glad I looked a bit further and found Stevan, a true gem. He was professional and responsive, friendly, attentive, and full of simple and innovative suggestions. He truly advanced my project. I recommend him 100%; you can go with him with your eyes closed, his work is worth it, and I would work with him again without hesitation.

Account deleted

Reviewed on 7/9/2025

I entrusted Stevan with a technical audit of a showcase website developed in React with a Next.js backend. His feedback was clear, structured, and highly professional. He analyzed the code structure, component clarity, front & build performance, and accessibility, all with concrete and constructive recommendations. Stevan is rigorous, precise, and proactive. A smooth, serious, and pleasant collaboration. I recommend him without hesitation!