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Senior Engineer - Payment & Wallet

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Last seen by MeritLog September 12, 2026Source: AshbySource version: ashby-public-job-posting-v1

Source: the employer's Ashby job board. Open the original listing for current details. Availability is not verified for this retained page.

Job details

Work model: On-site
Salary: Not listed by source
Location: Singapore

What the role asks for

What you'd do

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.
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.
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

Parsed by MeritLog from the employer’s own posting. The full description follows below.

Job description

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.

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