AppBay Studio Hiring! Full Time Senior Backend Engineer – Ledger - Transaction Systems in Selangor - Ricebowl

We're hiring: Senior Backend Engineer – Ledger & Transaction Systems

Kuala Lumpur | On-site with flexibility

AppBay Studio is a Malaysian enterprise software firm building large-scale platforms for regional retail, financial services and enterprise clients. For a major enterprise client in Kuala Lumpur, we're looking for a senior engineer who cares deeply about getting every number right.

What you'll do

• Design and build a high-precision core ledger: double-entry accounting, balances and complex calculation engines

• Guarantee data integrity, ACID transactional consistency and full auditability under high concurrency

• Optimise queries, locking strategies and calculation workflows for performance at scale

• Work closely with the solution architect, product and QA to define correct financial behaviour

What we're looking for

• 6+ years of backend engineering experience

• Proven experience building ledger, billing, payments, wallet, points or accounting systems in production

• Deep knowledge of relational databases (PostgreSQL or similar): transactions, isolation levels, locking, idempotency

• Strong in at least one of: Java/Kotlin, Node.js/TypeScript or Go

• Experience with event-driven architecture (Kafka, RabbitMQ or Pub/Sub) is a plus

• Fintech, banking, e-wallet, telco charging or loyalty background is a strong plus

What you get

• Competitive monthly package

• Ownership of the most critical component of a large-scale platform

• A small, senior team where your work is visible

• Open to Malaysian and foreign candidates – Employment Pass support available for the right person

Interested? Apply here or send your CV to ************* with the subject "Senior Backend – Ledger". Shortlisting starts immediately and early applications are prioritised.

Your CV will only be shared with our client with your consent.

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