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 @ 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 .