Staff Backend Engineer – Scalable Money Systems (Hybrid)

Ajaib Group; Jakarta Pusat; Remote; IDR 900,000,000 - 1,400,000,000; Full time

Benefits offered by this job

Performance Bonus

Private Insurance

Paid Time Off

Learning & Development

Hybrid Work Arrangement

Career Growth

Employee Perks

Collaborative & High-Ownership Culture

Job summary

Ajaib Group is seeking a Staff Engineer (Backend) to set technical direction for money systems across ledger, accounts, transfers and payments. You will design fault-tolerant services, review architectures, and ensure correctness of money flows with strong emphasis on compliance and reliability.

You will lead cross-team initiatives, mentor engineers, and stay hands-on where it matters most, driving technical standards and performance across the Money team.

Qualifications

• 8+ years of professional software engineering, with a proven record of designing and running large-scale distributed systems that handle money or other critical transactions.
• Strong experience in Java, Go or another modern backend language.
• Continuously deliver reliable, secure and scalable money-related services.

Responsibilities

• Define the technical direction and architecture for ledger, account and payment systems that span several teams.
• Lead the design of fault-tolerant, consistent and secure services, and review critical designs from other teams.
• Lead the ledger architecture: double-entry model, balance computation at scale, holds, reversals and complete audit trails.
• Set the standard for correctness in money flows: idempotency, clear transaction states, distributed transaction patterns and safe handling of unknown results.
• Design the platform for connecting to many banks and payment networks, including routing, failover, monitoring of success rates and cut-off handling.
• Design reconciliation, settlement and end-of-day processing that find every difference quickly and fix it at the root.
• Design fraud and risk controls that fit into real-time money flows without hurting normal customers.
• Plan for peak load and failure scenarios, and drive load testing, capacity planning and disaster recovery.
• Identify technical risks early, weigh trade-offs and drive decisions that fit business and regulatory needs.
• Lead investigations and root cause analysis for complex production incidents, and drive lasting improvements.
• Set and promote engineering standards for reliability, observability, security and performance.
• Partner with Engineering Managers, Product, Finance, Risk and Compliance on cross-team initiatives.
• Mentor Senior Engineers and help grow technical leadership across the team.
• Stay hands-on with implementation for critical components and complex problems.

Skills

Java

Go

Microservices

Event-driven

Distributed transactions

Observability

Performance optimization

Kafka

Redis

Relational databases

GCP

AWS

Education

Bachelor's or Master's degree in Computer Science or equivalent practical experience

Job description

Ajaib Group is seeking a Staff Engineer (Backend) to set technical direction for money systems across ledger, accounts, transfers and payments. You will design fault-tolerant services, review architectures, and ensure correctness of money flows with strong emphasis on compliance and reliability.

You will lead cross-team initiatives, mentor engineers, and stay hands-on where it matters most, driving technical standards and performance across the Money team.