Coinhako is hiring a Senior Engineer - Payment & Wallet in Engineering (Singapore).
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 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.
Qualifications & Requirements
- 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
- office with a well-stocked pantry
Find out more about Coinhako @ https://www.coinhako.com/ and don't forget to visit our Careers Page @ https://www.coinhako.com/join-us!
By submitting your application to us, you consent to the collection, use, disclosure and processing of your personal data in accordance with our privacy policy, which is accessible at https://www.coinhako.com/legal/sg-1/privacy_policy.
About Coinhako
Coinhako, founded in 2014 by Yusho Liu and Gerry Eng in Singapore, operates a leading licensed crypto exchange for Singapore and the region. Regulated under Singapore's Payment Services Act with a Major Payment Institution license from MAS, it offers spot trading, staking and custody for retail and institutional clients with SGD rails and FAST transfers. Serving millions of verified users, Coinhako emphasizes local compliance, secure cold storage and straightforward mobile onboarding. Headquartered in Singapore with a regional team, it was among the first platforms to receive in-principle approval from MAS and holds additional registrations in ASEAN markets. Backed by leading investors including SBI and Saison, Coinhako focuses on sustainable growth. Expect a compliance-first culture that values operational discipline, customer support and building trusted access to crypto in Singapore.