Tiago Antunes — Portfolio

About Me

AI engineer taking product ideas from prototype to production.

Background

AI engineer with 4+ years of production engineering, the last two focused on applied AI: RAG, function-calling agents, multi-model pipelines and structured outputs. I build the parts that have to scale — multi-tenant data, async jobs, modular providers — into the first prototype, so it doesn't need a rewrite later.

Currently shipping four AI-powered SaaS products end-to-end (Tablrr, Tripr, ApplyTrack, SkillPro for Universities). Previously shipped AI features from zero to production at HYP (TopCashback's RAG-based content classifier; SprintCV's CV import, fit classification, JD-tailored CV generator, and conversational assistant with function-calling), and built blockchain ingestion pipelines at Koinly.

Experience

Co-Founder & Engineer — Tablrr, Tripr & ApplyTrack

Mar 2026 – Present · Remote (Portugal & Dubai)

Two-person venture with four AI products live in production; I write the code, my co-founder runs business development from Dubai. Built Tablrr's two MCP servers from scratch rather than on top of a library, so external AI agents can run a restaurant directly — with a confirmation step before anything irreversible. Built Tripr's pipeline, routing each step to a different model and using a deliberately sceptical one to fact-check the others, plus a scheduler that fits a day around meal times and travel. Built ApplyTrack's acting AI chat across a web app and Chrome extension, and SkillPro for Universities — a white-labelled AI examiner that grades students against a taxonomy built from their professor's own course materials. Run it all on my own infrastructure — Docker, Kamal, Postgres, Redis, background queues, Sentry, GitHub Actions CI.

Software Engineer — Koinly

Dec 2025 – Mar 2026 · Remote

Built blockchain API integrations and CSV data mappers for cryptocurrency transaction importing. Designed ingestion pipelines to parse and classify transaction types (trades, transfers, staking, rewards) for automated tax reporting. Resolved data inconsistencies across third-party blockchain APIs and exchange file formats.

Software Engineer — HYP

Sep 2022 – Dec 2025 · Coimbra, Portugal

TopCashback — Built an AI-powered promotional content classification and rating system on Rails from initial prototype to production. Integrated RAG with vector embeddings to provide contextual data to LLMs. Designed similarity + consensus pre-filtering logic to keep LLM API costs scalable as volume grew.

SprintCV (Recruitment Platform) — Built AI-powered CV import with structured outputs across multiple LLM providers; candidate-to-job fit classification system; JD-tailored CV generator with multi-step pipeline; and a conversational AI assistant with function-calling tools for natural-language profile updates. Also delivered RESTful APIs for integrating SprintCV services with external platforms.

Skills & Technologies

Languages & Frameworks

Ruby on Rails 8
Python
JavaScript
Hotwire (Turbo & Stimulus)
Tailwind CSS
PostgreSQL

AI & LLM Stack

LLM APIs (OpenAI, Azure OpenAI, Gemini, DeepSeek)
RAG & Vector Embeddings
Function-Calling
Structured Outputs
MCP Servers
Multi-Model Pipelines

Deployment & Tools

Kamal Deployment
Docker
Solid Queue & Solid Cache
Stripe Integration
RESTful APIs
Git / GitHub / GitLab

Let's Connect

I'm always interested in connecting and discussing interesting projects. Feel free to reach out if you want to chat about Rails, AI, or anything tech-related!

Get In Touch