AI Product Engineer
Mar 2025 - Present
rj11iorj11.io
- AI agent harnesses, custom agent skills, and automations for early-stage startups, with codebases and infrastructure built from the ground up
About me
Frontend Platform Engineer with a decade of professional TypeScript experience, building on React since 2016 and Next.js since 2018. On most projects I was the first frontend hire, owning architecture, tooling, and pipelines from day one and shipping product features end to end, then growing the team: hiring, interviewing, onboarding, and writing the playbooks that let new engineers integrate seamlessly. Most of that experience is in cybersecurity, building dashboards, and proprietary data explorers. That's where I learned what separates a polished product from a prototype and found my passion for data-driven products and visualisations.
Skills
Core Stack
TypeScriptReact.jsNext.jsAI SDKConvexPlaywrightVercel
Platform & Tooling
CloudGitGitHub ActionsCI/CDTestingREST APIs
AI Engineering
Agent AutomationsCustom Agent SkillsHarness EngineeringCodexClaude Coden8n
Projects
- 11iorj11.ioPersonal brand for B2B freelancing
- 11aiai.rj11.ioOpen source AI skills and plugins
- 11benchbench.rj11.ioOpen source AI benchmarks
Experience
Product / Datavis Engineer
Apr 2024 - Mar 2025
Hunt Intelligence, Inc.hunt.io
- Built a modern TypeScript codebase with the latest Next.js and shadcn/ui, Vercel environments, Playwright end-to-end tests, and CI/CD on GitHub Actions with release changelogs hooked to Slack
- Built a new API documentation platform on top of OpenAPI, friendlier than Swagger
Senior Frontend Engineer → Team Lead
Jun 2023 - Apr 2024
OMEGA Systemsomegasys.eu
- Promoted to lead the frontend team: built the "New Developer" onboarding experience and set standards for tickets, documentation, and remote / async workflows
- Many bare metal deployments and maintained legacy Jenkins pipelines for licensed software
Senior Frontend Engineer
Jan 2022 - May 2023
Phantasma Chainphantasma.info
- Built the frontend monorepo for all new tools and apps, plus the Phantasma UI Storybook
- Contributed improvements to the Phantasma TypeScript SDK; built white-label theming, localisation, and environment configs
Frontend Lead
Feb 2020 - Oct 2021
BinaryEdge · Coalition, Inc.coalitioninc.com
- Introduced React, TypeScript, Material-UI, and Next.js to the stack, plus micro frontends; Tech Lead for the Coalition Storybook and component library
- Migrated the frontend CI/CD from Drone to GitHub Actions, improving pipelines, environments, and developer experience
Earlier: co-founder at Glaiveware, with infrastructure on AWS, Ubuntu, and nginx (2018 - 2019); roles at Sycret.ink, the American Heart Association, and NextBitt (2015 - 2017).
Education
IT Systems Management and ProgrammingEscola Profissional de Tecnologia Digital
2013 - 2016