About BIT：

BIT (formerly Matrixport) is a global digital asset financial services and infrastructure group. Headquartered in Singapore and founded in 2019, BIT bridges traditional finance and digital assets through governance-driven financial services and technology.

The firm manages over US$7 billion in assets and facilitates more than US$7 billion in monthly trading volume. BIT offers services including custody, trading, asset and wealth management, liquidity and financing solutions, and tokenised real-world assets (RWA), serving institutional and professional investors globally.

BIT Group entities maintain a licensed and regulated footprint across Singapore, Hong Kong, Switzerland, the United Kingdom, the United States and Bhutan.

For more information, visit www.bit.com

Kickstart Your Journey at BIT:

At BIT, we come together as a dynamic team to tackle exciting challenges head-on, creating an environment bursting with openness, transparency, and inclusivity. Every graduate is a vital part of our mission, and your ideas will always be valued. We’re searching for passionate, intellectually curious, and entrepreneurial individuals ready to make a real impact in the crypto ecosystem and help create innovative products for the next billion users.

• Make a Difference in the Future of Web3!
• Gain Hands-On Experience with Cryptocurrencies!
• Unlock Global Opportunities!
• Mentorship and Networking with Industry Leaders!
• Join a Fun, Vibrant, and Engaging Culture!

Job Responsibilities

Core Business Development

• Design, develop, and maintain backend services for the company's card payment and card issuing platform using Golang.
• Participate in the development of key business modules, including card issuing, card accounts, authorization, clearing & settlement, transaction processing, billing, rewards, and benefits systems.

Card Transaction Lifecycle Development

• Design and implement end-to-end card transaction processing workflows.
• Develop and maintain critical payment flows, including Authorization, Reversal, Capture, Refund, and Reconciliation.
• Ensure transaction accuracy, reliability, and consistency throughout the payment lifecycle.

Architecture Design & Optimization

• Participate in system architecture design and technical solution planning.
• Contribute to legacy system analysis, migration, and modernization initiatives.
• Continuously optimize system performance, scalability, and reliability to support mission-critical financial services.

Technical Excellence

• Identify and resolve system bottlenecks and complex technical challenges.
• Improve system throughput, response time, and operational stability under high-concurrency environments.
• Ensure transaction integrity, fund security, and data consistency.

Engineering Quality

• Produce and maintain high-quality technical documentation.
• Conduct code reviews and uphold engineering best practices.
• Develop comprehensive unit tests and integration tests to ensure system reliability and maintainability.

Requirements

Basic Qualifications

• Bachelor's degree or above in Computer Science, Software Engineering, or a related field.
• 3+ years of backend development experience using Golang and/or Java.
• Hands-on experience in card issuing systems, card payment systems, or card transaction processing platforms is highly preferred.
• Understanding of cryptocurrency fundamentals; experience in crypto trading, payments, or financial infrastructure is a plus.

Technical Skills

Programming & Computer Science Fundamentals

• Strong proficiency in Golang and/or Java, with a solid understanding of concurrent programming.
• Strong knowledge of Linux operating systems, computer networking, and data structures.
• Familiarity with Kubernetes and cloud-native development concepts.

Databases & Middleware

• Strong experience with MySQL and SQL performance optimization.
• Proficient in Redis and caching strategies, including handling cache penetration, cache breakdown, and cache avalanche scenarios.
• Experience with Kafka or similar messaging systems for asynchronous processing and system decoupling.

Distributed Systems

• Solid understanding of microservices architecture.
• Experience with gRPC and Protocol Buffers (Protobuf).
• Familiarity with service governance practices, including service discovery, circuit breaking, rate limiting, and distributed tracing.

Cloud Native & DevOps

• Experience with Docker, Kubernetes, and containerized application deployment.
• Familiarity with CI/CD pipelines and modern software delivery practices.

AI-Driven Development

• Proficient in using AI-assisted development tools such as Claude Code, Codex, or similar solutions.
• Able to integrate AI-powered workflows into daily development processes to improve productivity and engineering efficiency.
• Demonstrated ability to design and build high-value AI-assisted development workflows.

Preferred Qualifications

• Experience building systems for licensed card issuers, acquirers, payment processors, or third-party payment institutions.
• Familiarity with ISO 8583, ISO 20022 messaging standards, or integration with card networks and issuing partners.
• Experience with crypto payment infrastructure, crypto cards, fiat on/off-ramp solutions, or digital asset payment systems.
• Experience building accounting, reconciliation, treasury, or risk-control systems for high-volume financial transactions.
• Familiarity with PCI-DSS and payment security/compliance standards.
• Proven experience leading payment system development from scratch (0-to-1) or participating in large-scale core system migration projects.

Embrace the opportunity to thrive and grow with us as we shape the future together at BIT!

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