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.
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.
Why Hire Me
What I bring to a team
Business-first thinking
I go beyond technical implementation to understand the business itself — the why and what, not just the how.
Ownership mentality
I take ownership of business workflows end-to-end when building AI automations, not just the code I ship.
Proactive communication
I surface blockers and risks early, rather than waiting to be asked.
Comfortable with ambiguity
I turn high-level, ambiguous requirements into clear technical plans and architecture decisions.
Works well at every level
I communicate effectively with everyone 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
Projects
Selected work
03/2026 – Present
NutriGuide AI
AI-Powered Personalized Nutrition Assistant Web App
A LangGraph AI agent system with intent classification, multi-step reasoning, and RAG for nutrition-specific, grounded recommendations. Integrates the USDA FoodData Central (FDC) API for food search, nutrition data, and calorie tracking, with stateful conversations that combine user profiles, food logs, and TDEE for tailored dietary advice.
More projects coming soon
Additional case studies are on the way — check back soon.
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