Backend Engineer (Offline Payment Gateway) [Bayarind]

Sprint Asia

Actively hiring 3h ago

Full-Time
On-site • Tangerang Selatan

Min. 1 years of experience

Negotiable

No Sign Up Required!

Actively hiring 3h ago

Job Description

Support the development and maintenance of backend services for PG offline modules handling terminal transactions and ISO8583 messaging.
Assist in building and testing communication flows between POS terminals and host systems using jPOS and related tools.
Work with senior engineers to integrate EMV and card-based transaction flows (sale, void, refund, settlement, reversal).
Help debug transaction failures, connection timeouts, and message parsing issues during QA or UAT.
Contribute to internal documentation, logs, and monitoring setup to support ongoing operations and certification efforts.

Requirements

Bachelor’s degree in Computer Science, Electrical Engineering, or a related technical field.
0–2 years of experience in backend development (internship or project experience in fintech is a plus).
Strong interest in card-based payment systems, terminal communication, and transaction protocols.
Willingness to learn ISO8583 message formats, EMV standards, and jPOS architecture.
Basic understanding of networking (TCP/IP, sockets) and API interactions.
Familiarity with Java (or willingness to learn), especially for working with jPOS.
Understanding of REST APIs, JSON, HTTP, and SQL databases (PostgreSQL/MySQL).
Comfortable using Linux command line, reading logs, and basic debugging.
Bonus: knowledge of Golang, smart card technology, or APDU command structures.
Fast learner with attention to detail and a problem-solving mindset.
Strong teamwork and communication skills, especially when working with QA, hardware, or frontend teams.
Comfortable working in structured and regulated environments (e.g., fintech or banking).
Internship or academic project experience in payment systems, POS, or embedded software is a strong plus.
Enthusiastic about building a career in card payments, EMV, and transactional infrastructure.

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About Sprint Asia

Learn More

We provide innovative solutions through digital infrastructure & technology services to enhance your business.

Industry

IT Services And IT Consulting

Location

Jakarta, Indonesia

Company Size

50–100 employees