Open to opportunities

Hemvall User

@hemvall

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I build LLM systems, DevOps platforms, and Web3 products from production infrastructure to user-facing features.

France

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What I'm looking for

I'm open to remote roles where I can ship LLM systems, automation platforms, and Web3 products end to end, from evaluation and infrastructure to user-facing features.

At Riverboat, I built the LLM content-generation layer for a Solana prediction market, including structured output, golden-set evaluation, caching, feedback, persistence, React UI, and deployment. I also contribute to wager smart contracts, the whitepaper, wallet-flow fixes, and the team’s Git workflow.

I've built RAG over technical documentation and CI/CD across 170+ GitLab repositories for a scientific instruments manufacturer, and delivered automation workflows with n8n, Microsoft Graph, Adobe Sign, and SharePoint in Spain. Previously, I independently developed an internal API, EDI, documentation, and testing platform serving 1,000+ users for a European parcel delivery network.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack / AI & Web3 Developer

Current

Riverboat

Jan 2025 - Present (1 year 7 months)

Built an LLM feature for generating wager resolution terms and title suggestions, designed a golden-set evaluation suite, and contributed to smart contracts and front-end development. Owned Git workflow and translated product roadmap into GitHub issues.

LLM Prompt Engineering Python React Supabase Git GitHub Smart Contracts Solana

Current

DevOps & Platform Engineer

Current

Scientific Instruments Manufacturer

Jan 2024 - Present (2 years 7 months)

Built a RAG system over technical documentation and designed CI/CD platform across 170+ GitLab repositories. Automated pipeline generation and integrated E2E test automation with Cypress.

RAG CI CD Gitlab CI CMake Visual Studio Cypress Docker Python C++

Automation Engineer

Fire Protection Engineering Firm

Jan 2026 - Dec 2026 (11 months)

Designed and deployed internal automation workflows with n8n, integrated Microsoft Graph API and Adobe Sign API, and migrated legacy databases to SharePoint. Delivered mission in Spanish.

N8n Microsoft Graph SharePoint Adobe Sign Automation

Software Engineer

European Parcel Delivery Network

Jan 2022 - Dec 2024 (2 years 11 months)

Designed and developed an internal IT documentation platform, redesigned the order tunnel, and revamped transactional email system. Owned full-stack production with SQL Server, .NET, Vue.js, and React.

SQL Server .NET Vue.Js React REST APIs Agile