Senior Software Engineer
Full-stack · AI-powered apps · Web3 · Cloud-native
albmunmu@gmail.comCosta Rica
Senior Software Engineer with 15+ years of experience building scalable full-stack applications, AI engineering platforms, cloud-native systems, and Web3 applications. Expertise in React, Next.js, Python, FastAPI, Node.js, GraphQL, PostgreSQL, and AWS, with production experience developing AI solutions using OpenAI, Anthropic, LangGraph, RAG, Model Context Protocol (MCP), and multi-agent systems, as well as blockchain applications with ethers.js, Hardhat, Solidity, and wallet-based authentication (SIWE). Passionate about AI Engineering, Loop Engineering, and agentic software development to build intelligent automation and developer tools.
Capabilities
Selected work
Live demos linked below — screenshots open in a gallery.
AI-powered engineering copilot built with LangGraph, MCP, Hybrid RAG (pgvector + FTS + RRF), and Promptfoo evaluation workflows. Features GitHub, Filesystem, and PostgreSQL tool integrations, agent persistence, real-time SSE streaming, role-based access control, and evaluation-driven optimization using OpenAI Responses API.
Enterprise Salesforce QA automation platform — test management, multi-engine execution (Playwright, Selenium, pytest), SOQL explorer, AI-assisted failure triage, and multi-tenant SaaS operations. FastAPI + Next.js with Clean Architecture, event-driven outbox, Celery workers, and production demo mode.
AI-powered real-time music collaboration platform with AI-assisted songwriting, coaching, and an automatic karaoke maker powered by Replicate APIs. WebRTC jam rooms, PostgreSQL persistence, event-driven Inngest workflows, AWS S3 media storage, and OpenAI/Anthropic integrations for intelligent creative assistance.
Offline-first AI expense platform for capturing, validating, and managing invoices and receipts across desktop and mobile. OpenAI Vision extracts structured data from receipt images; validation workflows and sync built for field operations and low-connectivity environments.
Interactive 3D atlas of the Roman world (753 BC–476 AD) — 309 bilingual entries, timeline, guided tours, quiz mode, and encyclopedia on a Three.js globe with rich client-side data orchestration.
Flask power-user UI for YouTube Data API v3 — every search.list parameter, post-API filters, analytics, in-modal playback, and quota tracking for advanced search workflows.
Next.js 15 PokéDex and real-time battle platform with advanced filtering, retro themes, team builder, multiplayer battles, competitive usage meta, and Pokédex checklist sync — built with the same real-time, production-grade patterns used in large-scale web platforms.
Punch-Out!!–inspired arcade fighter set in Costa Rica’s Fiestas de Santa Cruz — 15 characters, canvas combat, and a Stable Diffusion pipeline for AI-generated sprite assets.
FFT-style isometric tactics in the Colosseum — hire gladiators on a point budget, CT turn order, class abilities, campaign mode, and a supernatural story arc in a fully client-side PWA.
Free React interview prep platform — 53 coding challenges with solutions, 290+ flashcards across 20 topics, and system-design guides. React 19 + Vite, built to help developers prepare for production engineering roles.
Beyond code