Hi, I'm
RJ Aca-ac
AI Developer / AI Engineer
Building end-to-end AI agents, automations, and full-stack LLM applications. Proven in transforming complex manual workflows into scalable, production-ready systems that deliver 90%+ time savings.
Projects
Selected work
NutriGuide AI
AI-powered personalized nutrition assistant
A LangGraph agent you talk to: log meals in plain English, ask nutrition questions grounded in a curated RAG knowledge base, and track calories/weight against a TDEE-based goal — streamed token-by-token to a React dashboard.
LeadFlow AI
Autonomous B2B lead-qualification agent
A LangGraph.js agent that scores and tiers inbound leads against a configurable ICP rubric, syncs to HubSpot, drafts outreach, and pauses on a durable human-in-the-loop approval gate before anything sends.
Sign Sense
Real-time mobile traffic sign recognition
An Android app that detects and classifies Philippine traffic signs in real time using YOLOv10 and a CNN, optimized with TensorFlow Lite. Published research: 0.823 mAP detection, 99.66% classification accuracy.
Dental Care
AI-powered oral health assistant
A dental clinic assistant combining a LangChain ReAct agent (SQL + web search tools), voice input via Deepgram, and a MobileNetV2 model for oral-disease image classification, with persisted multi-turn chat history.
About
A bit about me
I'm an AI Developer / AI Engineer who enjoys turning messy, manual workflows into scalable AI-powered systems. Beyond writing code, I care about understanding the business problem underneath it, taking ownership of what I build, and communicating clearly with the people I work with — whether that's a teammate just getting up to speed or a stakeholder with a high-level, ambiguous ask.
- ✓Goes beyond the code to understand the business problem underneath it
- ✓Takes ownership of workflows end-to-end, not just the code shipped
- ✓Surfaces blockers and risks early, rather than waiting to be asked
- ✓Turns ambiguous, high-level asks into clear technical plans
- ✓Communicates well from fellow engineers to executive stakeholders
Experience
Where I've worked
04/2025 – 12/2025
AI Developer
CD Commerce GmbH · Remote, Full-time
- Built and shipped full-stack AI-powered web applications, developing backend services, AI agent pipelines and automations, and modern frontend interfaces, while ensuring scalability and smooth end-to-end integration.
- Accelerated workflows by over 90%, transforming a 3-day manual procurement process into just 1 hour, and created other systems that similarly turned lengthy, complex processes into faster, more streamlined operations.
- Integrated third-party APIs including Bright Data, Keepa, and SellerSprite into AI-powered workflows and backend services, enabling automated data collection, product research, and more efficient procurement operations.
- Leveraged Python, JavaScript/TypeScript, along with LangChain, LangGraph, OpenAI, Playwright, React, NodeJS, FastAPI, and Docker to deliver production-ready platforms and improved usability for non-technical users.
- Took ownership of the full tech stack direction, turning high-level stakeholder requirements into clear technical requirements, architecture decisions, and well-communicated implementation plans despite ambiguity.
12/2024 – 03/2025
AI Engineer Intern
Quantiota · Remote, Internship
- Assisted in developing an AI agent using LangChain, LangGraph, and OpenAI to support natural language database queries, dashboard actions, and file operations with contextual interactions.
- Assisted in building Flask APIs and Dockerizing the application, contributing to system integration, deployment, and a more maintainable backend architecture.
10/2024 – 12/2024
Lead ML Engineer (Voluntary)
Omdena Ibadan Chapter · Remote, Contract
- Collaborated with a diverse team around the world on an innovative project to develop an AI-powered traffic management system, leveraging computer vision to improve traffic flow and reduce congestion in Nigerian cities.
- Led the development of a YOLO-based vehicle detection and counting model, overseeing dataset preparation to model training with Python, Roboflow, and Google Colab, supporting accurate vehicle detection and counting.
Skills
Tools I work with
Languages
AI / Agents
Backend
Frontend
Data / Infra
Education & Certifications
Background
2021 – 2026
Bachelor of Science in Computer Science
La Salle University · Ozamiz City, Misamis Occidental, PH
Certifications
Testimonials
What people say
“RJ was our first AI developer, joining as an intern straight out of university. He built our first scrapers and automation workflows, giving us an early foothold in AI and automation. Thanks for your contributions, RJ — all the best going forward.”
Christian Dick
CEO, CD Commerce GmbH
“I had the pleasure of working alongside RJ Aca-ac as a co-developer, and I'd recommend him without hesitation. RJ takes a genuinely hands-on approach to every project, and he's incredibly easy to work with. What stood out most was the quality of his work — clean, well-structured, and thoroughly documented. Beyond the technical side, RJ is simply a great person to have on a team.”
Christian Moises
AI Developer, CD Commerce GmbH
“Working alongside RJ has been one of the rare experiences where you can see professionalism and passion even without years of experience. What stood out the most was RJ's ownership mentality — he proactively drives solutions and flags risks early, delivering results. I'd recommend RJ without hesitation to any team looking for an AI Developer who brings both a technical and scalable mindset.”
Drixcy Guiang
HR Manager