Payments Backend Engineer: Idempotent APIs & Reconciliation

PT Brokeret Fintech Solutions; Jakarta Pusat; On-site; IDR 240,000,000 - 420,000,000; Full time

Job summary

PT Brokeret Fintech Solutions is seeking a hands-on engineer to integrate and operate payment providers across 50+ rails. You will design adapters and protocol handlers to support diverse rails, focusing on correctness, idempotency, reconciliation, and auditable settlement reports.

You will build robust APIs, monitoring, and runbooks, validate failure modes with tests, and work with product, client success, and engineering to meet SLAs. Strong SQL/ledger experience is essential.

Qualifications

• Practical experience building or operating payment integrations, settlement, or ledger systems.
• Strong understanding of idempotency, retries, transactions, and distributed failure modes.
• Comfortable working with SQL/ledger models, batch processing, and reconciliation logic.
• Hands-on operational discipline: alerts, runbooks, postmortems, and automated tests for failure paths.

Responsibilities

• Design and implement adapters and protocol handlers for diverse payment rails and providers.
• Build idempotent APIs, retry/backoff policies, and distributed coordination to prevent duplicate effects.
• Implement reconciliation pipelines and settlement logic that produce auditable reports and discrepancies.
• Maintain monitoring, alerting, and runbooks for payment flows, including automated checks and manual investigation steps.
• Create test harnesses and simulations to validate failure modes before deploy.

Skills

Payment integrations

Idempotency

Distributed systems

Monitoring & observability

Testing & automation

Tools

SQL

Job description

PT Brokeret Fintech Solutions is seeking a hands-on engineer to integrate and operate payment providers across 50+ rails. You will design adapters and protocol handlers to support diverse rails, focusing on correctness, idempotency, reconciliation, and auditable settlement reports.

You will build robust APIs, monitoring, and runbooks, validate failure modes with tests, and work with product, client success, and engineering to meet SLAs. Strong SQL/ledger experience is essential.