{"id":2344331,"url":"https://alion.io/job/coinhako-senior-engineer-payment-wallet","title":"Senior Engineer - Payment & Wallet","company":{"id":175035,"name":"Coinhako","domain":"coinhako.com","url":"https://alion.io/company/coinhako","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-23T05:54:15Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Singapore"],"countries":["SG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":40000,"max_usd":80000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":358},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Go","optional":false},{"name":"Ruby","optional":false},{"name":"AWS","optional":true},{"name":"Docker","optional":true},{"name":"Rest API","optional":true},{"name":"Sidekiq","optional":true}],"status":"live","first_seen_at":"2026-05-25T04:28:44Z","employer_posted_date":"2026-05-25","last_verified_at":"2026-10-24T02:22:52Z","board_verified":true,"closed_at":null,"days_open":152,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":151},"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.\nIn 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.\nWhat you'll be doing:\nArchitect and build scalable backend services. Our tech stack is Rails 8, Go, Sidekiq, REST, AWS, Docker;\n\nDesign and build high-volume APIs used by our frontends and external traders;\n\nTake initiative to ensure the long-term quality of the code and drive decisions related to the architecture of production systems;\n\nManage 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;\n\nCollaborate with other engineers, product managers and designers during various product development stages;\n\nImprove engineering standards, tooling, and processes.\n\nWhat we're looking for:\nBachelor’s or Master’s degree in Computer Science, Engineering, or related field;\n\nUnderstand good practices of building and working with APIs;\n\nHave 5+ years of building scalable distributed systems with a strong background in Ruby, Go is a plus;\n\nComfortable with ambiguity and scoping solutions with your teammates;\n\nYou’re organized, proactive and can be your own manager;\n\nKnowledge of cryptography and security principles in blockchain as well as compliance and regulatory frameworks for cryptocurrency.\n\nWhat’s in it for you:\nFriendly and fun start-up work culture\n\nConvenient work location located in the heart of CBD area\n\nGenerous annual leaves on top of national holidays\n\nMedical coverage including GP, Specialist, TCM, and more\n\nSelf-care benefits and exciting fitness workshops/webinars\n\nVibrant office with a well-stocked pantry\n\nFind out more about Coinhako @https://www.coinhako.com/ and don't forget to visit our Careers Page @https://www.coinhako.com/join-us!\nBy 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.","description_format":"text","description_chars":2499,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Annual leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Crypto Exchanges"],"lifecycle":[{"event":"open","at":"2026-10-12T12:03:17Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.286,"p_room":0.28,"age_days":151,"expected_fill_days":27,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-10-23T05:54:15Z"},"pay":null,"html_url":"https://alion.io/job/coinhako-senior-engineer-payment-wallet","json_url":"https://alion.io/job/coinhako-senior-engineer-payment-wallet.json","meta":{"generated_at":"2026-10-24T05:27:09Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":7707,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":175035},"rest":"https://alion.io/mcp/rest/get_company?id=175035"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcoinhako-senior-engineer-payment-wallet"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fcoinhako-senior-engineer-payment-wallet"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fcoinhako-senior-engineer-payment-wallet"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/coinhako-senior-engineer-payment-wallet\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcoinhako-senior-engineer-payment-wallet"}]}