Golang Backend Engineer: Card Payments & Crypto

BIT Official; Kuala Lumpur; On-site; MYR 120,000 - 210,000; Full time

Job summary

BIT is seeking a Backend Engineer specializing in Golang and card payment systems to join our global financial services platform. You will work on card issuance, accounts, authorization, clearing, settlement, and transaction processing within a high-availability, secure environment.

The role involves architecture design, system optimization, and hands-on development using Kubernetes, Docker, Kafka, MySQL, Redis, and gRPC/Protobuf. Prior crypto/payments experience is a plus.

Qualifications

• 3+ years of Golang and/or Java development.
• Hands-on experience with card issuing/payments systems.
• Basic understanding of crypto fundamentals and how crypto systems operate.
• Experience in crypto trading or payments is a plus.

Responsibilities

• Core business development for Golang backend of card payment and card issuing systems.
• Design and develop end-to-end card transaction lifecycle (Authorization, Reversal, Capture, Refund, Reconciliation).
• Participate in architecture design, migration, and performance optimization for financial systems.
• Identify and resolve technical bottlenecks, ensure security and data accuracy under high concurrency.
• Maintain documentation, enforce code quality, conduct code reviews, and develop tests.

Skills

Golang

Java

Linux

Concurrent programming

Data structures

Education

Bachelor's degree in Computer Science or related field

Tools

Docker

Kubernetes

Kafka

MySQL

Redis

gRPC

Protobuf

CI/CD

Claude Code/Codex

ISO 8583

Job description

BIT is seeking a Backend Engineer specializing in Golang and card payment systems to join our global financial services platform. You will work on card issuance, accounts, authorization, clearing, settlement, and transaction processing within a high-availability, secure environment.

The role involves architecture design, system optimization, and hands-on development using Kubernetes, Docker, Kafka, MySQL, Redis, and gRPC/Protobuf. Prior crypto/payments experience is a plus.