{"id":2116996,"url":"https://alion.io/job/bolt-senior-backend-engineer","title":"Senior Backend Engineer","company":{"id":232,"name":"Bolt","domain":"bolt.eu","url":"https://alion.io/company/bolt","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":59000,"max_usd":98000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":312},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"GCP","optional":false},{"name":"Node JS","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-21T14:08:36Z","employer_posted_date":null,"last_verified_at":"2026-09-21T14:08:36Z","board_verified":false,"closed_at":null,"days_open":22,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":22},"description":"About the role\n\nAs a Senior Backend Software Engineer based in Warsaw, you will be responsible for architecting, designing, developing, and deploying Bolt's growing backend systems, mostly via coding in Node.js and TypeScript. You'll work on unique product challenges including complex algorithms for demand prediction, optimal real-time pricing, routing, fraud detection, and distributed systems, collaborating closely with key internal stakeholders to scalably design backend systems and APIs.\n\nMain tasks and responsibilities\n\nArchitecting, designing, developing, and deploying Bolt's growing backend systems.\n\nCollaborating with key internal stakeholders to scalably design backend systems and APIs to meet their needs.\n\nHelping lead features and initiatives from idea to positive execution.\n\nWorking closely with Product to slice scope and deliver piece by piece.\n\nContributing ideas and constructive feedback to our product development roadmap.\n\nWymagania\n\nYou thrive in fast-paced, customer-feedback-driven environments and have empathy for end-users.\n\nYou excel at making data-driven, metric-based decisions and leading initiatives through to completion.\n\nYou have expertise in microservice architecture, API design, and distributed high-volume systems.\n\nYou have strong principles towards writing clean, secure, maintainable, readable, and testable code.\n\nYou are experienced with cloud systems (AWS, Azure, Google Cloud) and relational databases.\n\nFamiliarity with real-time and asynchronous systems and highly available infrastructure is a plus.\n\nOferujemy\n\nAccelerate your professional growth with unique career opportunities.\n\nEnjoy a rewarding salary and stock options, knowing that as Bolt succeeds, so do you.\n\nTake care of your physical and mental health with our wellness perks.\n\nCelebrate 5 years at Bolt with a 1-month paid sabbatical to recharge.\n\nConnect with colleagues at annual company events and smaller team gatherings.\n\nBalance flexibility and in-person collaboration with our hybrid model, including at least 12 monthly in-office days.\n\nSome perks may differ depending on your location and role.\n\nAt Bolt, using AI daily is a baseline expectation for everyone. If there’s a faster, smarter way to do your work, we expect you to find it. You’re still responsible for the output, so the standard stays high when using AI tools.\n\nExperience is great, but what we really look for is drive, intelligence, and integrity. 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