{"id":1474053,"url":"https://alion.io/job/dcv-technologies-mid-senior-crypto-developer","title":"Mid/ Senior Crypto Developer","company":{"id":890,"name":"DCV Technologies","domain":"dcvtechnologies.co.uk","url":"https://alion.io/company/dcv-technologies","size_band":"51-200","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Web3","role_family":"Web3","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":68000,"max_usd":110000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":21},"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"Bitcoin","optional":false},{"name":"CI/CD","optional":false},{"name":"DeFi","optional":false},{"name":"Ethereum","optional":false},{"name":"Java","optional":false},{"name":"Solidity","optional":false},{"name":"JavaScript","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-09-29T17:40:52Z","employer_posted_date":null,"last_verified_at":"2026-09-29T17:40:52Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"Mid-Senior Crypto Developer\nLocation: Warsaw, Poland\nWork Model: Hybrid - 1-3 days per week onsite\nContract: Contract\nDCV/WP/VS/29.09.28\nAbout the Role\nWe are looking for experienced Mid-Senior Crypto Developers to join a technology team in Warsaw, working on enterprise-grade cryptocurrency, blockchain and digital payments solutions.\nThe role combines strong software engineering with hands-on knowledge of blockchain technologies, distributed systems and secure application development. Send Cv to  if you are interested\nKey Responsibilities\nDesign, develop and maintain enterprise-grade crypto and blockchain-based products.\n\nBuild scalable, high-performing distributed systems, APIs and orchestration layers.\n\nDevelop and maintain third-party integrations.\n\nDrive end-to-end software development from architecture and design through deployment and production support.\n\nDevelop and enhance backend services using Java and modern engineering practices.\n\nCollaborate with frontend teams using Angular.\n\nEnsure application security, reliability, monitoring and high availability.\n\nImplement and maintain CI/CD pipelines, testing frameworks and software quality standards.\n\nWork with cross-functional stakeholders on digital payments and financial-services solutions.\n\nTroubleshoot complex technical issues and continuously improve system performance and scalability.\n\nStay current with blockchain, cryptocurrency and financial-technology developments.\n\nKey Requirements\n12+ years of work experience with a Bachelor's degree OR 8+ years of relevant experience with an advanced degree such as a Master's, MBA, JD or MD.\n\nStrong experience building scalable, high-performing distributed systems.\n\nExperience with APIs, orchestration layers and third-party integrations.\n\nStrong understanding of monitoring, alerting and high-availability environments.\n\nStrong experience across the Secure Software Development Lifecycle, including:\nVersion control\n\nCI/CD\n\nUnit testing\n\nPerformance testing\n\nStrong understanding of blockchain technologies, both public and permissioned.\n\nUnderstanding of DeFi applications and blockchain security protocols.\n\nKnowledge of private-key custody and distributed ledgers.\n\nExperience/knowledge across technologies such as Bitcoin, Ethereum and Hyperledger.\n\nStrong understanding of Solidity, Assembly and EVM technologies.\n\nExperience within payments and financial services, including payments ecosystems, payment-processing flows and compliance.\n\nStrong communication, facilitation and leadership skills.\n\nHighly Preferred\nBlockchain, crypto, fintech or payments domain experience.\n\nBackend development using Java.\n\nFrontend development using Angular.\n\nFull-stack software development experience.\n\nImportant\nCandidates must be able to work hybrid in Warsaw, 1-3 days per week onsite and be comfortable completing a coding assessment as part of the recruitment process.","description_format":"text","description_chars":2935,"description_truncated":false,"requirements":{"experience_years_min":12,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto","Cryptocurrencies"],"lifecycle":[{"event":"open","at":"2026-09-29T18:05:50Z"}],"liveness":{"score":54,"band":"ok","label":"Likely open","p_open":1,"p_active":0.542,"p_room":1,"age_days":1,"expected_fill_days":42,"reasons":["seen:1","agency","velocity","win:early"],"computed_at":"2026-10-01T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/dcv-technologies-mid-senior-crypto-developer","json_url":"https://alion.io/job/dcv-technologies-mid-senior-crypto-developer.json","meta":{"generated_at":"2026-10-01T18:22:09Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":655,"day_limit":5000,"remaining_today":4345,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}