Senior backend engineer who ships APIs, automation,
and AI-powered products.

10+ years building the backend systems businesses run on, in Laravel, Node.js, and Rust. I design fast, maintainable APIs and integrate AI into products that solve real problems for startups, agencies, and growing teams.

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About

I build the backend that keeps your product fast, reliable, and scalable.

I'm a backend engineer with 10+ years building the systems businesses depend on: clean REST APIs, payment integrations, optimized databases, and large migrations like a recent Node-to-Rust rewrite. I use AI to ship faster and to build it into products: LLM features, retrieval systems, and automation that removes manual work. When a project needs it, I cover the full stack with React and TypeScript, so you get working software end to end.

Services

What I build

Backend Development

Reliable, maintainable services and business logic built to scale.

API Development

Clean, documented REST APIs other teams can build on.

AI Integrations

LLM features, retrieval (RAG), and AI agents wired into your product.

Automation Systems

Replacing manual, repetitive work with dependable automated workflows.

SaaS Platforms

End-to-end web platforms from database to UI, ready for real users.

Full-Stack Applications

Complete apps when you need one engineer to own the whole build.

Stack

Skills & tools

Backend

Rust / AxumPHP / LaravelNode.js / ExpressREST API designStripe & payments

AI & Automation

AI IntegrationsLLM ApplicationsRAG SystemsAI AgentsMCP DevelopmentWorkflow Automation

Frontend

ReactTypeScriptResponsive web UIs

Data & Cloud

PostgreSQL / MySQLpgvectorDynamoDBDockerVercel
Work

Experience

Senior Backend Engineer, MindFeed · Remote
Jun 2025 – Present

Led the migration of a legacy Node.js/Express backend to Rust (Axum), improving performance and reliability. Integrated Stripe billing and Strava data sync. Used automation and tooling to ship faster while keeping the codebase maintainable.

RustAxumStripeAutomation
Web Developer, Karta · Remote
May 2020 – Dec 2024

Built REST APIs powering client dashboards and real-time sales reporting, and automated recurring reporting jobs that removed manual work. Designed backend architectures that scaled with the product.

Node.jsReactTypeScriptAWS SAMDynamoDB
Web Developer, Avazoo / ApptechGateway · Remote · Contract
Mar 2020 – May 2022

Designed database schemas and built APIs for mobile and web clients, delivering reliable server-side logic for core business features.

Laravel 8APIsCSS
Web Developer, Hurricane Media · Remote
Feb 2018 – Mar 2020

Integrated Stripe with Laravel including secure payment flows and webhooks, and optimized slow queries to improve backend performance. Onboarded and supported new developers.

LaravelStripePerformance
Web Developer, NexusBond Asia Inc. · Remote
Jul 2015 – Feb 2018

Built and maintained client web applications in Laravel, reviewed code, and helped hire and screen developers as the team grew.

LaravelMentoring
Showcase

Selected projects

LaundryFlow: Laundry Operations & POS

LaundryFlow: Laundry Operations & POS

Laundry businesses were juggling operations and sales across disconnected tools. I built a single operations and point-of-sale platform (a NestJS API and React front-end in one monorepo) so staff handle orders, payments, and daily operations in one place. AI-assisted planning let me scope and ship it faster without cutting corners on structure.

ReactTypeScriptNestJSPostgreSQLDocker
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Healthcare AI Platform

Healthcare AI Platform

Insurance pre-authorization is slow and manual for clinics. I built a HIPAA-conscious platform that uses AI to streamline approvals for providers and patients, with separate provider and patient flows, Stripe billing, and secure document handling, turning a manual back-and-forth into a faster path to approval.

ReactTypeScriptExpressSupabaseStripe
Legal Research RAG
Legal Research RAG Legal Research RAG

Legal Research RAG

Lawyers lose hours digging through case law by hand. I built a retrieval-augmented tool that runs semantic search over Philippine case law and auto-classifies results by practice area, so relevant authority is found and cited in minutes. Built on a React + NestJS monorepo with PostgreSQL and pgvector.

ReactNestJSPostgreSQLpgvectorRAG
Workspace

Workspace

Coordinating multiple AI agents usually means brittle scripts and cloud lock-in. I built a control plane that orchestrates fleets of agents (handling state, auth, and task routing), running fully local on an embedded Postgres, with an issue-tracker-style workspace to direct the work.

NodePostgreSQLAI AgentsAuth
Crate Club

Crate Club

A tactical-gear brand needed subscription commerce that scaled across membership tiers. As part of the team at Hurricane Media, I built storefront cart and checkout flows and a backend reporting dashboard, and integrated Stripe webhooks for reliable subscription billing.

StripeE-commerceCheckoutReporting
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NexusBond

NexusBond

Established businesses needed custom software delivered reliably, not just websites. At NexusBond I built and maintained client web applications in Laravel and helped mentor and screen new developers, supporting the firm’s delivery of custom apps and internal systems.

LaravelPHPWeb AppsMentoring
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Contact

Looking for a backend or AI engineer?

Available for contract or full-time work: backend engineering, API development, AI integrations, and custom software for startups, agencies, and growing businesses. Email is the fastest way to reach me.

rumargibs@gmail.com LinkedIn GitHub Download CV