Open to opportunities

Gallih User

@gallihuser

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Senior backend engineer building reliable APIs and production systems for fintech and SaaS.

Indonesia

Message

What I'm looking for

I’m looking for remote or international opportunities where I can own backend delivery, build reliable APIs and integrations, and lead scalable architecture—while collaborating with product and frontend teams to ship dependable production systems.

I’m a Senior Backend / Full-Stack Software Engineer with 8+ years of experience building and maintaining production systems across fintech, SaaS, e-commerce, marketplace, HR-tech, and business operations platforms. I’m strongest in backend engineering—APIs, server-side logic, database workflows, integrations, production debugging, and system reliability.

I’ve owned end-to-end delivery—requirements, design, implementation, debugging, deployment, and production maintenance—while collaborating closely with frontend, product, QA, and stakeholders. As a Technical Lead, I drove architectural decisions, improved delivery priorities, and managed production incidents across application, database, and integration layers.

My core stack centers on TypeScript, Node.js, NestJS, Express.js, PHP/Laravel, and modern frontend frameworks, supported by MySQL/PostgreSQL/MongoDB, Redis, Docker, and AWS. I also contribute to engineering practices like code reviews, mentoring, and performance improvements (including optimizing SQL workloads and reducing production incidents), and I’ve taught software development through my lecturer experience.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Developer

Current

Fabrotech

Jan 2023 - Present (3 years 6 months)

Designed, built, and maintained backend services and APIs for client-facing applications using NestJS (TypeScript) and PHP/Laravel. Owned the full delivery lifecycle including debugging, deployment, and production maintenance, managing MySQL/PostgreSQL, Redis caching, and Docker containerization.

NestJS TypeScript PHP Laravel Backend REST APIs Debugging Deployment MySQL PostgreSQL Redis Docker Server Side Delivery Lifecycle Containerization

Technical Lead

Lingkar Niaga

Jan 2021 - Jan 2023 (2 years)

Led backend and platform engineering for marketplace/e-commerce systems, combining hands-on development with technical leadership. Drove architectural decisions around API design and database structure, mentored 4–6 developers, and managed production systems and live incidents.

backend architecture API Design Database Design service reliability Incident Management Technical Planning Mentor Technical Leadership

Backend Engineer

HReasily (Singapore)

Jan 2019 - Jan 2021 (2 years)

Developed backend features for HR-tech and payroll SaaS systems serving businesses across Southeast Asia. Built REST APIs, database schemas, and server-side logic for payroll processing and employee management, collaborating with a distributed remote-first team.

Payroll Processing Employment Management REST APIs Schémas Server Side Logic

Backend Engineer (Fintech)

Visionet / OVO

Jan 2018 - Jan 2019 (1 year)

Built backend services for a high-scale digital wallet/payment ecosystem serving millions of users. Developed APIs for financial operations and payment integrations, ensuring reliability and data correctness for regulated financial transactions in 24/7 production using Node.js, PHP, MySQL, Redis, and message queues in a microservices architecture.

Node PHP MySQL Redis Message Queues Microservices Architecture Payment Integration Regulated Transactions Data Correction Reliability

Lecturer (IT & Software Development)

Wearnes Education Center

Jan 2013 - Jan 2018 (5 years)

Taught programming fundamentals, software engineering, and backend development, while developing curriculum and training materials for web development courses. Designed and maintained production APIs and optimized SQL queries, leading an engineering team and improving testing, monitoring, and deployment practices, including migrating on-premise applications to AWS/GCP.