{"id":3802,"url":"https://alion.io/job/swissborg-software-engineer-propr-xyz","title":"Software Engineer | Propr.xyz","company":{"id":1615,"name":"Swissborg","domain":"swissborg.com","url":"https://alion.io/company/swissborg","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["CH"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":106000,"max_usd":187000,"period":"year","method":"role_seniority_country_cell","sample_n":21},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon Aurora","optional":false},{"name":"Amazon ECS","optional":false},{"name":"AWS","optional":false},{"name":"FastAPI","optional":false},{"name":"GitHub","optional":false},{"name":"Nest.JS","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"Terraform","optional":false},{"name":"Turborepo","optional":false},{"name":"TypeORM","optional":false},{"name":"TypeScript","optional":false},{"name":"WebSockets","optional":false},{"name":"JavaScript","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-04-30T12:08:14Z","employer_posted_date":"2026-04-30","last_verified_at":"2026-10-17T01:58:44Z","board_verified":true,"closed_at":null,"days_open":169,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":168},"description":"Propr.xyz is building a new Operating System for prop firms, helping them leverage blockchain technology to make them more efficient. We enable prop firms to leverage perpetual futures on Hyperliquid, prediction markets, and spot assets. We are actively deploying our technologies to the largest prop firms in the world. The pace is intense, but the journey is exciting. We only hire A-players. You need to be exceptional.\nResponsibilities\nDesign and implement backend services across the trading domain.\nOwn features end to end: schema, API, tests, UI integration.\nContribute to real time infrastructure and client facing APIs.\nWrite integration tests against real dependencies.\nRequirements\n5+ years production backend experience.\nStrong TypeScript or other strongly typed language background.\nExperience with trading systems, financial infrastructure, or exchange adjacent domains.\nDistributed system and transaction knowledge.\nModern Node.js backend framework (NestJS preferred; Spring / FastAPI / similar acceptable).\nSQL and a production ORM (preferably TypeORM).\nArbitrary precision decimal arithmetic in financial contexts.\nIntegration first testing discipline.\nAble to ship React / Next.js features to completion.\nBonus\nEvent sourcing experience.\nCrypto exchange experience.\nDirect experience with major exchange APIs (REST + WebSocket).\nAWS (ECS, Aurora, ElastiCache etc.), Terraform.\nMonorepo tooling (Turborepo, Nx).\nKYC / compliance workflows.\nCrypto native.\nHow to apply\nWe ask candidates to submit their application via a POST request to our API. This helps us identify candidates who read job descriptions carefully and have basic technical skills.\nPOST\nhttps://propr.xyz/api/hiring/apply\nRequest body:\n{\n\"roleSlug\": \"software-engineer\",\n\"name\": \"Your Name\",\n\"email\": \"\",\n\"link\": \" https://github.com/yourprofile \",\n\"coverNote\": \"Why Propr?\",\n\"exceptionalNote\": \"What makes you exceptional?\",\n\"telegramHandle\": \"@yourhandle\",\n\"appUid\": \"optional-trading-terminal-uid\"\n}","description_format":"text","description_chars":1999,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Switzerland","iso":"CH","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto","Cryptocurrencies","Crypto Exchanges"],"lifecycle":[{"event":"open","at":"2026-04-30T12:08:14Z"}],"visa":[],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":1,"p_active":0.349,"p_room":0.28,"age_days":168,"expected_fill_days":35,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-16T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/swissborg-software-engineer-propr-xyz","json_url":"https://alion.io/job/swissborg-software-engineer-propr-xyz.json","meta":{"generated_at":"2026-10-17T02:37:13Z","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":3580,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":1615},"rest":"https://alion.io/mcp/rest/get_company?id=1615"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fswissborg-software-engineer-propr-xyz"},{"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%2Fswissborg-software-engineer-propr-xyz"},{"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%2Fswissborg-software-engineer-propr-xyz"},{"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/swissborg-software-engineer-propr-xyz\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fswissborg-software-engineer-propr-xyz"}]}