{"id":742946,"url":"https://alion.io/job/cardax-backend-blockchain-developer-cardano-plutusplutarch-haskell","title":"Backend Blockchain developer Cardano - Plutus/Plutarch (Haskell)","company":{"id":696030,"name":"Cardax","domain":"cardax.io","url":"https://alion.io/company/cardax","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Breezy","truth_index":null},"role":"Web3","role_family":"Web3","seniority":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_company_offices","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["NL"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Cardano","optional":false},{"name":"Haskell","optional":false},{"name":"Smart Contracts","optional":false}],"status":"live","first_seen_at":"2022-06-13T11:58:15Z","employer_posted_date":"2022-06-13","last_verified_at":"2026-10-31T13:47:48Z","board_verified":true,"closed_at":null,"days_open":1601,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":1600},"description":"Cardax DEX is a platform to exchange tokens on the blockchain without a central entity. There are already DEXes on other blockchains, but Cardano has only recently released support for smart contracts. This brings a unique opportunity for us to be one of the major players on Cardano.\nThe smart contracts are written in Plutarch (Haskell). They define the constraints and conditions under which actors can interact with the exchange.\nAre you up to get into what the job is about and how you could become one of our team? Apply today.","description_format":"text","description_chars":533,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Netherlands","iso":"NL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto","DeFi","Crypto Exchanges"],"lifecycle":[{"event":"open","at":"2026-09-11T13:11:56Z"}],"visa":[],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.17,"p_room":0.28,"age_days":1600,"expected_fill_days":14,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-31T05:58:55Z"},"pay":null,"html_url":"https://alion.io/job/cardax-backend-blockchain-developer-cardano-plutusplutarch-haskell","json_url":"https://alion.io/job/cardax-backend-blockchain-developer-cardano-plutusplutarch-haskell.json","meta":{"generated_at":"2026-10-31T16:40:58Z","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":26116,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-01T00:00:00Z"}},"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":696030},"rest":"https://alion.io/mcp/rest/get_company?id=696030"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcardax-backend-blockchain-developer-cardano-plutusplutarch-haskell"},{"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%2Fcardax-backend-blockchain-developer-cardano-plutusplutarch-haskell"},{"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%2Fcardax-backend-blockchain-developer-cardano-plutusplutarch-haskell"},{"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/cardax-backend-blockchain-developer-cardano-plutusplutarch-haskell\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcardax-backend-blockchain-developer-cardano-plutusplutarch-haskell"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":742946}},{"tool":"search_jobs","arguments":{"company":"cardax.io","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":742946},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}