AI-Augmented Full-Stack Developer

AI products that actually ship — built solo, end to end.

I'm Marxander — I design and build production-minded AI products on my own, backed by 14+ years leading software delivery for clients in Japan and the US. One person who understands the business and writes the code: no middlemen, nothing lost in translation.

Two working products you can try yourself ↓

  • 14+ years leading delivery
  • Clients in Japan & the US
  • Two products built solo with AI
  • Available remote worldwide

Featured projects

Working products you can try, not slideware.

Two products designed and built solo, end to end. Filter by what you're looking for.

Working · Architected for production

Paxie — Agentic RAG Knowledge Assistant

Ask your company's documents in plain language, get cited answers

An R&D effort I led and built solo — a knowledge assistant that lets employees query company documents in natural language and receive AI-generated answers with source citations.

  • Multi-pass Agentic RAG with automatic query reformulation (up to 3 passes) — vs. single-pass in most RAG apps
  • Full role-based access control enforced on every vector search, with permission-gap detection
  • Pre-index quality gate — low-quality documents are scored and rejected before ingestion
  • Multi-provider AI — Claude, Gemini, and Azure OpenAI, switchable from an admin panel
  • Built for self-hosted deployment: Docker Compose, nginx, TLS, GitHub Actions CI/CD
Next.js 16PostgreSQL + pgvectorPython FastAPIClaude APIPrismaDocker
Live demo coming soon
Built & working · Deployment-ready

Project Instance — AI-Augmented Development Workflow Platform

Mission control for building software with AI

A platform that turns the AI-assisted development workflow into a managed product — one dashboard to plan, build, test, document, and ship — replacing scattered planning and handoff files. Conceived from lessons learned building Paxie, and built solo.

  • Multi-role SaaS with full RBAC — Owner, DevOps, Developer, Tester, and read-only Viewer
  • Quality gates that block a build phase until tests, docs, and open issues are resolved — with an audited owner override and a fix-and-re-verify issue loop
  • GitHub integration — scaffolds new repos or adopts existing ones in safe pull-only mode
  • Multi-environment management — Development → Staging → Production with a guided promotion flow
  • Delivery-metrics dashboard plus an embedded read-only AI assistant answering questions from each project's own records
Next.js 16React 19TypeScriptPostgreSQLPrismaNextAuthDockerAzure AI Foundry
Live demo coming soon

What I do

Build the product, and own the delivery.

01

AI & RAG applications

Agentic RAG assistants, document Q&A, and AI features wired into real products, with access control and quality gates — not toy demos.

02

Full-stack product development

Complete web apps end to end: Next.js, React, PostgreSQL, role-based access, third-party integrations, and deployment.

03

End-to-end project ownership

From business requirement to shipped product. I gather the requirement, plan it, build it, and deliver it — solo.

04

Project & delivery management

14+ years leading teams and delivery: planning, resource allocation, monitoring, and reporting. I can run the project, not just code it.

How I work

No middlemen, nothing lost in translation. You work directly with the person who understands the business and writes the code.

Plan

Gather requirements, scope, and align on goals. 14 years of business-side planning means I get this right before any code.

Design

Prototype the solution so we agree on it early.

Build

AI-augmented full-stack development — fast, but production-minded.

Deliver

Tested, documented, and shipped, with quality gates so “done” means done.

Comfortable across business cultures — years of supporting clients in Japan and the US.

Selected experience

14+ years leading delivery.

2024 – Present

Fresh Graduate Training Lead

N-PAX Cebu (AADX)

Built and led a developer training program; concurrently led the R&D behind Paxie and Project Instance.

2017 – 2024

Client Operations Lead & Support

N-PAX Cebu (NRI Japan)

Primary client liaison and delivery lead for clients in Japan and the US; led the team and managed delivery end to end.

2014 – 2017

Sr. Software Engineer / Pod Lead

Accenture Philippines

Led a pod delivering an Accenture.com NextGen module in an Agile environment.

2011 – 2014

Programmer / Team Leader

N-PAX Cebu (HRC)

Built workflow systems; progressed to leading a small web team.

Contact

Let's build something.

Tell me what you need. I'll tell you honestly whether and how I can deliver it — and what it'll take. I reply within 24 hours.

Or email me directly