Senior Engineer - Payment & Wallet

We are looking for a Senior Engineer 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. You’ll collaborate with cross-functional teams to ensure seamless integration across systems, optimize transaction workflows, and enhance platform reliability and scalability.

What you'll be doing:

• Architect and build scalable backend services. Our tech stack is Rails 7, Go, Sidekiq, REST, AWS, 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. Ensure 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.

What we're looking for:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field;

• Understand good practices of building and working with APIs;

• Have 5+ years of building scalable distributed systems with a strong background in Ruby, Go is a plus;

• Comfortable with ambiguity and scoping solutions with your teammates;

• You’re organized, proactive and can be your own manager;

• Knowledge of cryptography and security principles in blockchain as well as compliance and regulatory frameworks for cryptocurrency.

What’s in it for you:

• Friendly and fun start-up work culture

• Convenient work location located in the heart of CBD area

• Generous annual leaves 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

Find out more about Coinhako @ and don't forget to visit our Careers Page @!

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