Guillaume Delore
Product Engineer · Currently based in Riga, Latvia · French citizen
FullStack · AI Applied · Background in finance and applied mathematics
deloreguillaume@gmail.com · guillaumedelore.com · LinkedIn · GitHub
Summary
- Product-minded full-stack engineer with a background in finance and applied mathematics.
- 3+ years of full-stack development with Next.js, TypeScript, and Node.js, shipping AI-enabled SaaS products end to end.
- Production experience building AI-enabled workflows with LangChain, OpenAI, Gemini, Langfuse, LiveKit, and Braintrust.
- Master's degree in applied mathematics and statistics from Telecom SudParis.
Experience
Founder — Softwarehiring.com, builderbrew.com
2024 – Present
- Founded and built Softwarehiring.com, a vertical hiring platform for US companies hiring EU-based software engineers
- Owned all business and product decisions. Pivoted to a narrower niche and launched builderbrew.com
- Built frontend, including auth, payment, storage with Next.js, Clerk, Stripe, Zustand, Tailwind, Turborepo
- Built AI-enabled pipelines to aggregate and analyze hundreds of thousands of jobs with Docker, AWS CDK, AWS Fargate Terraform, Node.js, Langfuse, Openai
- Built and managed databases with PostgreSQL, Supabase, Neon, Prisma, pgvector, PostGIS, Meilisearch
- Researched and solved small-scale problems including feed ranking, document parsing, and voice agents with LangChain, Langfuse, Braintrust, LiveKit, and OpenAI.
Co-Investor — Hospitality / Real Estate
2023 – 2023
- Explored a $500k–$1M co-investment with a partner for a hotel, B&B, or farm in Portugal, Montenegro, and Poland; searched land plots, handled regulatory paperwork, contacted real estate agents and local officials, evaluated monetization options including hospitality and outdoor activities.
Co-Founder — Grabbit
Jan 2023 – Apr 2023
- Early-stage startup building a mobile-first online shopping experience.
- Built a React Native application with Unit.co virtual card payments and delivered a functional in-app shopping MVP.
Community Manager & Investor — DeFi — Lendflare & Kaspa
2021 – 2023
- Community manager for Lendflare, a DeFi lending protocol for Curve/Convex tokens; wrote technical documentation and reviewed smart contracts. Early community member and investor in Kaspa (KAS).
- 25x net total realized return without insider information or reserved token allocation.
Credit Analyst — Société Générale CIB, Warsaw, Poland
Dec 2020 – Jun 2021
- Second rotation of the graduate program as credit analyst for Société Générale corporate activities in Poland.
Internal Auditor / Data Analyst — Société Générale CIB, Hamburg, Germany
Dec 2019 – Dec 2020
- First rotation of the graduate program in the internal audit team covering all banking activities in DACH and the Netherlands.
Software Engineering Intern — French Ministry of Defense, Paris
Apr 2019 – Sep 2019
- R&D research intern at a government cybersecurity and intelligence research division in Paris.
- Researched and analyzed BGP protocol technical details.
- Upgraded an open-source tool to track and analyze different BGP protocol flux.
- Tech stack: Python, HTML, CSS, YAML, Docker, Kafka, RabbitMQ, Git.
Education
Master's Degree — National Institute of Telecommunications (Telecom SudParis), France
Sep 2016 – Sep 2019
Major in applied mathematics and statistics; coursework included stochastic finance, machine learning, and signal processing. Skills: scikit-learn, TensorFlow, PyTorch. Master's exchange at the Technical University of Munich, Germany (Apr 2018 – Sep 2018).
Skills
Languages & Frameworks: JavaScript, TypeScript, Next.js, Node.js, Python, TailwindCSS, Zustand, Go, Shadcn UI, Radix UI
Infrastructure: AWS, Docker, Turborepo, Cloudflare, Vercel, Railway
Data & APIs: GraphQL, SQL, Zod, PostgreSQL, Neon, Supabase, Prisma, Meilisearch, PostGIS, Pinecone, pgvector
Automation & AI: Puppeteer, Playwright, LangChain, OpenAI, Gemini, Langfuse, Braintrust, Cursor, OpenRouter, Bright Data
Product: Product Management, UX/UI Design, Stripe, Polar.sh, Clerk, PostHog, Google Stitch, Semrush, Ahrefs