Looking for a job

M Yafiz Ham Batubara

@yafizham

Message

I build high-concurrency enterprise systems for logistics, sales, financial workflows, and retail operations.

Indonesia

Message

What I'm looking for

I'm open to remote opportunities worldwide or relocation where I can build and operate high-concurrency enterprise systems across web, mobile, logistics, financial workflows, and retail operations.

I've independently designed, deployed, and operated 14+ production enterprise applications at PT Catur Sukses Internasional, replacing spreadsheet-heavy workflows with multi-tenant web and mobile platforms for logistics, sales, financial workflows, and retail POS.

I build high-concurrency systems with NestJS, TypeScript, PostgreSQL, and Redis—from warehouse booking collision resolution and offline POS synchronization to LDAP SSO, workflow engines, and Microsoft Dynamics NAV integrations.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

PT Catur Sukses Internasional

Oct 2024 - Present (2 years)

Sole engineer responsible for designing, programming, deploying, and maintaining 14+ production enterprise applications. Engineered Redis cache locks and optimized PostgreSQL queries to resolve database race conditions during concurrent warehouse slot booking and retail transactions.

NestJS TypeScript React PostgreSQL Redis Prisma Docker Linux Nginx CI CD GitHub Actions Active Directory LDAP React Flow Next.js React Native WebSockets Microservices SOAP NTLM Zustand Redux toolkit MongoDB SQLite Mongoose

Education

Degrees, certifications, and relevant coursework

Institut Sains dan Teknologi Medan

Undergraduate Coursework, Mining Engineering

Completed six semesters of undergraduate coursework in Mining Engineering, including advanced mathematics, statistics, and physics, before transitioning to software engineering.