SUNDAY, JUNE 7, 2026FR

SIMON LECHEVALIER

Full-Stack Software Engineer building web and mobile applications with modern development workflows.

I focus on shipping production-ready products quickly using React, Next.js, React Native, FastAPI, Python, PostgreSQL, Docker, and pragmatic development practices.

Open to junior/mid engineering roles, startup environments, solutions/integration engineering, and contract/freelance work across frontend, backend, APIs, and automation.

The Developer

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Featured Works

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Jarvis Voice Assistant

ProblemVoice AI assistant with a fast spoken-response pipeline.
StackReact Native, Expo, FastAPI, Deepgram, Groq, PostgreSQL, Redis, Docker.
OutcomeBuilt a functional voice assistant with around 2s response latency from spoken question to answer.
#ReactNative#Expo#FastAPI#Python#Deepgram#Groq#PostgreSQL#Redis#Docker

ConvAI Speech Analysis Agent

ProblemSpeech recordings needed transcription, analysis, and structured outputs.
StackPython, LLM APIs, audio ingestion scripts, structured JSON outputs, automation workflows.
OutcomeBuilt a reusable speech-analysis workflow that turns raw audio into actionable summaries and extracted insights.
#Python#LLM#SpeechAI#Automation#APIs

StreamArena

ProblemPrediction products need simple onboarding, clear wallet actions, and understandable user feedback.
StackNext.js, React, TypeScript, PostgreSQL, Web3 libraries, smart-contract interactions.
OutcomeBuilt a Web2-friendly interface direction for Web3 prediction flows with clearer wallet and transaction UX.
#Next.js#React#TypeScript#PostgreSQL#Web3#Solidity#APIs

Professional Experience

Full-Stack Developer (Freelance)

Aug 2022 - Current
Freelance

Built web and mobile applications using React, Next.js, React Native, FastAPI, and Python. Worked across product development, APIs, automation workflows, debugging, refactoring, and client-ready delivery.

Full-Stack Developer

Jun 2025 - Nov 2025
Teclis Scientific

Revamped a legacy Wix system into a modern Next.js platform over a six-month engagement. Introduced CMS-driven maintenance, expanded multilingual support from 3 to 10 languages, improved SEO architecture, structured content workflows, and helped turn a difficult-to-maintain marketing site into a scalable international platform.

Web3 Front-End & Integration Developer

Jan 2022 - Dec 2025
Independent Web3 Projects

Built front-end flows and integrations for wallet connections, smart-contract interactions, token-gated experiences, prediction mechanics, and Web3 libraries. Focused on reducing onboarding friction for Web2 users and making blockchain state, transactions, and UX feedback easier to understand.

NOW BUILDING

ACTIVE
Jarvis

Voice-first AI assistant with an end-to-end STT/LLM/TTS pipeline optimized for low latency, typically answering in about 2 seconds from spoken question to response.

Progress75%

Technical Skills

CORE SKILLS:
  • Frontend: TypeScript, React, Next.js
  • Mobile: React Native, Expo
  • Backend: Python, FastAPI, REST APIs
  • Data: PostgreSQL, Redis
  • Delivery: Docker, Git, CI/CD pipelines

Strengths

  • Fast full-stack product delivery
  • API integration and automation
  • Debugging, refactoring, and continuous code improvement
  • Product-minded UX decisions

Languages

  • French
  • English
  • Japanese

Additional Notable Experience

Shopify & E-Commerce

Practical knowledge of Shopify storefront constraints, conversion-oriented pages, product presentation, checkout friction, SEO basics, and merchant-focused content workflows.

Crypto Ecosystem

Strong understanding of wallets, tokens, DeFi culture, on-chain UX, Web3 communities, market narratives, smart-contract interaction patterns, and the gap between crypto-native and mainstream users.

Product Design

Comfortable shaping product flows, information hierarchy, interface clarity, onboarding, and feature scope so technical systems remain understandable to real users.

3D & Blender

Basic Blender and 3D workflow knowledge useful for asset preparation, visual prototyping, spatial thinking, and collaboration around WebGL or immersive interface ideas.

Hobbies

LanguagesCosmologyGeopoliticsFinanceTravelProgrammingVideo GamesMusic