About Gautier
I help finance and operations teams automate complex workflows with AI and custom software.
I combine workflow automation with custom software, APIs, LLM/agentic AI, testing, observability and financial-domain understanding to deliver reliable production systems.
Before software engineering, I spent four years as a Senior Auditor at KPMG, after earlier experience at Société Générale CIB across derivatives, risk advisory, M&A and private equity. This background helps me understand financial and operational workflows quickly, identify what must remain traceable, and test the parts that cannot quietly be wrong.
Selected work:
• Designed and built an accounting engine that generated 500+ French tax filings after four months of development, delivered by the regulatory deadline, then reached approximately 2,000 filings the following year
• Built fraud-detection tooling and real-time market monitoring for a crypto trading platform
• Currently building RideLvL’s agentic video-analysis pipeline, including evaluation, observability and testing infrastructure
I can help with:
• AI workflow automation using n8n, APIs and custom TypeScript or Python
• AI agents and LLM integrations
• Evaluation, observability and cost control for AI workflows
• Financial and operational software requiring correctness, traceability and reliable production delivery
French
Native or bilingual
English
Fluent
Can work on-site
Genève (up to 10km), Lausanne (up to 10km), Lyon (up to 10km), Annecy (up to 10km), Grenoble (up to 10km)
Experience
- RideLvLAI Software Engineer & CofounderSPORTSNovember 2025 - Today (8 months)Annecy, France• Lead engineering and product for an AI coach that analyses action-sports videos and provides personalised technical feedback• Architect and implement the core agentic video-analysis platform: vision-model workflows, context engineering, ski-pedagogy knowledge, evaluation, observability and engineering quality harnesses• Built and shipped an MVP within weeks, tested it with ski coaches and riders in real conditions, and used direct product discovery to evolve the system toward a B2C offering
- Cede LabsSoftware EngineerMay 2025 - November 2025 (6 months)Paris, France• Designed and built, using a test-driven approach, a graph-traversal algorithm over Arbitrum transaction trees to identify related wallets, pruning ordinary transactions to surface shared non-exchange ancestors several hops downstream; built an interactive 3D visualisation in Next.js• Co-designed a wash-trading detection methodology for a CEX/DEX trading competition platform, analysing P&L, spread and slippage to identify users systematically avoiding spread costs• Built real-time order-book monitoring across Binance and Bybit, capturing live snapshots in PostgreSQL and calculating rolling spread averages to identify liquidity gaps for market makers• Applied Domain-Driven Design and CQRS to a real-time TypeScript/NestJS stack using SSE, WebSockets, Redis, PostgreSQL, AWS and GCP
- ShodoSoftware EngineerEDUCATION AND E-LEARNINGJuly 2024 - May 2025 (10 months)Paris, France• Joined the consulting team revamping 42’s internal platform, covering candidate acquisition, selection events, online tests and entrance-exam logistics• Strengthened engineering quality by hardening the TypeScript compiler configuration, surfacing 500+ latent errors, introducing a dedicated technical-debt triage process and simplifying error handling
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Education
- 42 Bachelor's degree202042 Bachelor's degree
- Advanced Master's degree in Financial TechniquesESSEC - ESSEC Business School2013Advanced Master's degree in Financial Techniques
Certifications
- Mathematics for Machine LearningImperial College London (Coursera)2026