Senior Engineer - Payment & Wallet (Remote)
About the Role
We are looking for a Senior Engineer - Payment & Wallet to join our Payments & Wallet team (also known as PAW 🐾) — the core group handling asset management, compliance, and On-chain Services & Integrations (Superwallet) at Coinhako. In this role, you will be responsible for designing, developing, and maintaining high-performance services that power our payments and wallet infrastructure. As a Senior Engineer - Payment & Wallet, you will collaborate with cross-functional teams to ensure seamless integration across systems, optimize transaction workflows, and enhance platform reliability and scalability.
What You'll Do
- Architect and build scalable backend services. Our tech stack includes Rails 7, Go, Sidekiq, REST, AWS, and Docker.
- Design and build high-volume APIs used by our frontends and external traders.
- Take initiative to ensure the long-term quality of the code and drive decisions related to the architecture of production systems.
- Manage and maintain custody solutions for digital assets, ensuring the highest level of security and compliance in handling and storing digital assets, including cryptocurrencies, tokens, and digital records.
- Collaborate with other engineers, product managers, and designers during various product development stages.
- Improve engineering standards, tooling, and processes.
Requirements
- Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
- 5+ years of experience building scalable distributed systems with a strong background in Ruby; knowledge of Go is a plus.
- Understanding of best practices for building and working with APIs.
- Comfortable with ambiguity and scoping solutions with your teammates.
- Organized, proactive, and able to manage your own tasks effectively.
- Knowledge of cryptography and security principles in blockchain, as well as compliance and regulatory frameworks for cryptocurrency.
Nice to Have
- Experience with cloud services (AWS, Azure).
- Familiarity with Docker and container orchestration.
- Previous experience in the crypto or fintech industry.
What We Offer
- Friendly and fun start-up work culture.
- Convenient work location in the heart of the CBD area.
- Generous annual leave on top of national holidays.
- Medical coverage including GP, Specialist, TCM, and more.
- Self-care benefits and exciting fitness workshops/webinars.
- Vibrant office with a well-stocked pantry.
This Senior Engineer role at Coinhako offers a unique opportunity to work in the crypto space, focusing on payments and wallet infrastructure with a vibrant startup culture.
Who Will Succeed Here
Proficient in Ruby and Go programming languages with a deep understanding of building and maintaining REST APIs for high-performance payment systems, ensuring secure transactions and compliance with financial regulations.
Demonstrates a strong grasp of AWS services and Docker for containerization, with experience in deploying scalable and resilient applications in a remote work environment, adapting to agile methodologies and remote team dynamics.
Possesses a solid foundation in cryptography and security principles, with a mindset focused on continuous improvement and risk management, crucial for safeguarding sensitive financial data in payment and wallet infrastructures.
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