Senior Backend Engineer II — Remote Payments & Ledger

Ajaib Group; Jakarta Pusat; Remote; IDR 400,000,000 - 700,000,000; Full time

Benefits offered by this job

Performance bonus

Private health insurance

Paid time off

Learning & development

Hybrid work arrangement

Career growth

Employee perks

Collaborative culture

Job summary

Ajaib Group is seeking a Senior Backend Engineer II to own and operate the money team’s backend services, from design to production. You will manage accounts, transfers, bank integrations and batch processing, ensuring auditability and security at scale.

Design robust ledger logic, build reliable money flows, and mentor engineers while collaborating with Product, Finance, Operations, Risk and Security to deliver trusted financial systems.

Qualifications

• Bachelor's degree in Computer Science or equivalent practical experience.
• 5+ years of professional backend engineering owning production services handling money or critical transactions.
• Strong in Java, Go or another modern backend language.
• Solid understanding of microservices, REST/gRPC, event‑driven design, distributed transactions.
• Hands‑on with relational databases, caching (Redis) and messaging (Kafka).
• Working knowledge of ledgers, payment networks, bank integrations or similar payment/e-wallet systems.
• Experience on cloud platforms (GCP/AWS) with containers and CI/CD.
• Ownership mindset and clear communication; familiarity with banking/payments is a plus.

Responsibilities

• Design, build and run scalable, secure backend services and APIs for accounts, balances, transfers and payments.
• Own larger features end to end, including monitoring and on‑call follow‑up.
• Design ledger and balance logic with complete audit trails and accurate transactions.
• Ensure money flows are correct, with idempotent requests, clear states and safe retries.
• Integrate with banks and payment networks with resilient, fault‑tolerant designs.
• Build and improve reconciliation, settlement and end‑of‑day processing and fixes.
• Implement risk controls like transaction limits and fraud rules with Compliance.
• Maintain performance and scale during peak periods; lead design/code reviews and incidents analysis.

Skills

Backend engineering

5+ years experience

Java / Go

System design

Microservices

REST / gRPC

Relational databases

Cloud platforms

On-call / incident response

Mentoring

Education

Bachelor's degree in Computer Science

Tools

Kafka

Redis

GCP

AWS

Job description

Ajaib Group is seeking a Senior Backend Engineer II to own and operate the money team’s backend services, from design to production. You will manage accounts, transfers, bank integrations and batch processing, ensuring auditability and security at scale.

Design robust ledger logic, build reliable money flows, and mentor engineers while collaborating with Product, Finance, Operations, Risk and Security to deliver trusted financial systems.