NestJS & Laravel API · Integrations

HRNSenior Backend Engineer

NestJS and Laravel backend for API design, webhooks, and third-party integrations — with 7+ years shipping Java/PHP systems and leading TypeScript replatforming. I embed AI-driven development into production workflows to deliver enterprise-grade quality at high velocity.

Public proof demos: Ops Inbox API (Nest webhook) and Laravel Outbound API — plus client work across public sector, finance, SaaS, and healthcare.

Profile portrait of HRN

Expertise

Engineering Strengths & Stack

Architectural rigor × AI-driven velocity

Actively practiced & continuously refined

Domain-Driven Design

Built on the system-design discipline cultivated across Java and PHP, I architect TypeScript (NestJS / Next.js) systems that ruthlessly separate business logic from infrastructure and treat bounded contexts as first-class architectural primitives. Every implementation is anchored in the domain model — engineered for the long-term maintainability and evolutionary change that real businesses demand.

  • Bounded Context
  • Clean Architecture
  • Layered Design
  • NestJS
  • Next.js

Production-grade AI orchestration

AI Prompt Engineering & Vibe Coding

I orchestrate Cursor, Claude Code, and Gemini as a coordinated engineering force in real production work. By translating DDD-grounded component designs and responsibility boundaries into precise, specification-level prompts, I direct AI to execute the implementation — shipping production-ready code at exceptional velocity without compromising architectural quality. This is Vibe Coding executed with engineering rigor.

  • Cursor
  • Claude Code
  • Gemini
  • Vibe Coding
  • Spec-Driven

Languages

Server-side languages I rely on for production work

  • TypeScript
  • Java
  • PHP
  • SQL

Frontend

Modern UI implementation engineered around the API contract

  • React
  • Next.js
  • Tailwind CSS

Backend

Architectures grounded in DDD and Clean Architecture principles

  • NestJS
  • Laravel
  • Spring Boot
  • REST API

Cloud / Infra

Standardized development environments and CI/CD pipelines

  • AWS
  • Docker
  • WSL2
  • CI/CD

Selected Engagements

Client work + public proof demos

Ops Inbox API — Signed Webhook Ingest (public sample)

Portfolio proof for NestJS integration work: HMAC-verified webhooks, idempotent storage on retries, OpenAPI, and one recorded outbound notify (mock by default). Built for fixed-price / Upwork-style API briefs.

NestJSPrismaPostgreSQLOpenAPIRender
GitHubLive API

Hosted DB may be offline on the free tier when another sample is using the slot.

Laravel Outbound API — Integration Module (public sample)

Portfolio proof for Laravel spot work: validated notify endpoint, mock or HTTP outbound call with persisted audit rows, PHPUnit + smoke, hosted on Render. Shows API glue without shipping vendor secrets.

LaravelPHPPostgreSQLPHPUnitRender
GitHubLive API

AI-Integrated Web & Mobile Application for Healthcare Providers

Strategic recovery of a delayed, high-stakes project through architectural redesign. Architected the Java-to-TypeScript replatforming on a DDD foundation, optimized API performance, modeled the database schema, and established automated test coverage to safeguard delivery.

TypeScriptNestJSPrismaPostgreSQLRedisAWS S3/SQS

Vulnerability Management SaaS — Platform Development & Operations

Owned end-to-end backend feature delivery and targeted refactoring on a vulnerability-management SaaS. Hardened third-party API integrations, unified cross-service exception handling, and standardized the development workflow with Docker / WSL2 — compressing onboarding time and lifting overall code quality.

PHPLaravelMySQLPostgreSQLDockerAWS EC2/S3

Enterprise HR Management System

Sustained multi-year continuous delivery on a business-critical HR platform. Owned detailed design, implementation, and unit testing across successive legal-compliance releases — protecting stable operations while shipping change with confidence.

JavaJavaScriptSQLPostgreSQLOracleTomcat

Career

  1. Senior Backend Engineer

    Spearheading modernization and AI-driven development across legacy estates. Delivered a vulnerability-management SaaS in PHP (Laravel) and architected a DDD-based redesign of a healthcare application on TypeScript / NestJS. Championed refactoring, test automation, and a Docker / WSL2-based dev environment standard adopted across teams.

  2. Backend Engineer

    Drove roughly three years of continuous delivery on legal-compliance updates for an enterprise HR platform. Owned detailed design, implementation, and testing across Java, PostgreSQL, and Oracle — sustaining stable long-term operations on a business-critical system.

  3. Software Engineer

    Launched my career engineering government and financial systems — including a national employment-services platform and an individual pension insurance system. Mastered waterfall-style detailed design through QA in Java / SQL, and delivered internal IT onboarding training to new engineers.