01Product/Platform · AI
- Type
- Work-delivery platform · roadmap agent
- Stack
TanStack
Google Cloud
Cloudflare
NestJS
FastAPI+2FrameworksTanStack · NestJS · FastAPIAILangGraphDataRedisCloud & InfraGoogle Cloud · Cloudflare- Year
- / 2026
I build software end to end, turning real problems into solutions people actually use, and giving back to the developer communities that shaped me.
Full-stack engineer · solutions & community
DAVID BATO-BATO
02 / 07
About me
Self-taught, endlessly curious, and most alive when an idea turns into something people can actually use.
I taught myself to code years ago and haven't stopped since. I'm drawn to the hard, unglamorous parts of the stack (fail-open caching, idempotent payment flows, AI agents that hold their state when everything around them doesn't) less for their own sake than for the quiet satisfaction of building a system that just works, even when things go wrong.
What I love just as much is the people side of it: leading build sessions, mentoring newer developers, and shipping tools for the tech communities I'm part of. Sharing what I learn, and learning out loud alongside others, is the part of this craft I'd never trade away.
03 / 07Capabilities
Expertise
Four areas I work in deliberately: interfaces, the cloud they run on, the AI inside them, and the reliability that holds it together.
E.01
Full-stack engineering
Product-grade interfaces backed by typed, well-bounded services.
- Next.js · React · TypeScript
- NestJS · FastAPI · Express
- REST, webhooks, realtime
E.02
Cloud & infrastructure
Lean, observable deployments that stay cheap as they scale.
- AWS · GCP · Cloudflare
- Durable Objects · R2 · Cloud Run
- Terraform · Docker · OIDC CI/CD
E.03
AI engineering
Agents and retrieval wired into real product workflows.
- LangChain · LangGraph
- RAG · embeddings · tool-calling
- OpenAI Responses API
E.04
Performance & reliability
Designed for the failure mode first, then the happy path.
- Multi-tier caching
- Idempotency & graceful degradation
- Core Web Vitals · observability
StackTools I reach for
- TypeScript
- JavaScript
- Python
- React
- TanStack
- Next.js
- Node.js
- NestJS
- FastAPI
- Express
- Tailwind CSS
- Socket.IO
- Vite
- PostgreSQL
- MongoDB
- Redis
- Supabase
- Firebase
- AWS
- Google Cloud
- Cloudflare
- Docker
- Terraform
- LangChain
- LangGraph
- PyTorch
- OpenAI
04 / 07
Some of my latest work
Some work is shown in limited detail to respect client confidentiality and data privacy. All content here is protected under the Data Privacy Act of 2012 (R.A. 10173). Any unauthorized use, reproduction, or misuse may be subject to legal consequences.
02Client/Developer community
- Type
- Backend & infrastructure
- Stack
ReactNestJS
Supabase
Redis
AWS+2FrameworksReact · NestJSDataSupabase · RedisCloud & InfraAWS · Terraform · Docker- Year
- / 2026
03Client/Travel · Payments
- Type
- Booking & automation engine
- Stack
Next.jsReact
Firebase
Stripe
Revolut+1FrameworksNext.js · ReactCloud & InfraFirebaseServicesStripe · Revolut · Gmail API- Year
- / 2026-2025
04Client/AI · Retrieval
- Type
- AI RAG assistant for DEVCON
- Stack
- FastAPIReact
OpenAIGoogle Cloud
Google Drive - Year
- / 2025
05Client/AI · Translation
Wally Translation
Link not availableClient-only workspace. Public access is withheld to protect private documents and project data under the Data Privacy Act of 2012 (R.A. 10173).- Type
- AI translation workspace
- Stack
- ReactFastAPINext.js
LangChain
LangGraph+1FrameworksReact · FastAPI · Next.jsAILangChain · LangGraphDataSupabase - Year
- / 2025
06Client/SEO · Support
- Type
- SEO landing pages · customer support chat
- Stack
Google Tag Manager
Google Analytics 4
Google Search Console
Zoho SalesIQNext.js+1FrameworksNext.js · ReactServicesGoogle Tag Manager · Google Analytics 4 · Google Search Console · Zoho SalesIQ- Year
- / 2026
↗
07Archive/Earlier work
More projects
See David’s other projects on his previous portfolio.
davidbatodev-portfolio.vercel.app↗05 / 07Trajectory
Experience
- Jan 2026 - PresentNow
Prodigitality Services PH
Cloud Engineer · Lead Developer
Owning architecture and technical direction across core services, accelerating delivery from design to deployment on AWS, GCP, and Cloudflare with LangChain/LangGraph powering AI-driven workflows.
- Oct 2025 - Jun 2026
ImHereTravels
Full-Stack Developer · Automation Lead
Built a backoffice platform that cut manual workload ~50%, plus core billing systems (due dates, late fees, installment plans) on Next.js, Firebase, Google Cloud Run, and Stripe.
- May 2025 - Oct 2025
Greystack
Junior Software Developer · AI Engineer
Built an AI-powered productivity platform with OCR pipelines and a human-in-the-loop canvas, improving task execution speed ~45% while reducing manual data entry ~60%.
- Education · Foundation
Polytechnic University of the Philippines
B.S. Computer Engineering · Expected July 2027
Communities
Volunteer leadership across Philippine developer communities: building tools, mentoring, and running build sessions.
DEVCON Philippines
2025Backend & Infrastructure Lead
Led backend and infrastructure on the DEVCON+ platform and built Debbie, its AI RAG assistant, for the country's largest volunteer developer community.
AWS Cloud Club PUP
Nov 2025 - PresentBackend Lead · Skill Builder
Backend lead for the Skill Builder department, building club tooling and mentoring members on cloud-native services.
GDG PUP
Sep 2024 - Sep 2025Web Development Co-Lead
Co-led the web development track, running build sessions and mentoring student developers shipping real projects.
06 / 07Giving back
For aspiring Filipino developers
Free, hands-on workshops and code-alongs I help run with GDG on Campus PUP, walking the next wave of Filipino developers through building real things from first commit to deployed app.
Python Flask Code Along
A backend workshop covering the fundamentals by building a Password Manager API: routing, data handling, and a clean endpoint design.
Code Along: Build a Notes App in React
A hands-on session building a Notes App from scratch, reinforcing the React essentials: components, state management, and hooks.
More workshops & code-alongsView more→
LET’S TALK.
Write directly
batobatodavid20@gmail.comOpen to full-stack, cloud, and AI-engineering work, full-time or project-based. Based in Manila, Philippines, working remotely.