Hermawan S.

Key Skills

Software

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Top Subject Matter

HRIS SaaS

Car Rental Aggregator

Top Data Types

Document

Text

Top Task Types

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Freelancer Overview

Backend developer with 5+ years building production-grade APIs and distributed systems — mostly on SaaS products with real users at scale, including a Payroll & HRIS platform with 50,000+ app downloads. My core stack is PHP and Laravel, with a strong focus on code correctness: static analysis with PHPStan, test coverage with PHPUnit, and clean architecture via the repository pattern. What I bring beyond the code: • Multi-tenant API architecture on Laravel • Performance engineering — Redis caching, MySQL query optimisation, async job queues • Observability — Sentry error tracking, Kibana log analysis, Nginx + Linux server ops • AWS infrastructure — S3, SQS • Cross-functional collaboration with frontend (InertiaJS, ReactJS), DevOps, and QA • Full API documentation via Swagger / OpenAPI I've been working fully remote since 2022 and I'm comfortable operating autonomously in async-first environments. Open to contract, full-time, or freelance roles — especially with globally distributed teams.

Education

Work History