{"id":2719530,"url":"https://alion.io/job/b3-consulting-group-senior-software-engineer","title":"Senior Software Engineer","company":{"id":21061,"name":"B3 Consulting Group","domain":"b3.se","url":"https://alion.io/company/b3group","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"C","score":60,"open_postings":45,"ghost_share":0.667,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":31,"computed_at":"2026-10-19T05:45:15Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Claude Code","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Copilot","optional":false},{"name":"Cursor","optional":false},{"name":"GitLab CI","optional":false},{"name":"GitOps","optional":false},{"name":"Helm","optional":false},{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Kubernetes","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring Cloud","optional":false},{"name":"Testcontainers","optional":false}],"status":"live","first_seen_at":"2026-10-15T09:36:59Z","employer_posted_date":"2026-10-15","last_verified_at":"2026-10-19T11:21:55Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":3},"description":"We are part of an international organization listed on Nasdaq Stockholm, operating in 11 countries. In Poland, we work with full autonomy. We independently choose our technologies, processes, and ways of working while maintaining the highest professional standards.\nWe deliver a wide range of IT projects in Poland and internationally, across multiple domains and technologies. This allows our consultants to develop their competencies and gain experience aligned with their professional ambitions.\nOur collaboration is built around the CARE philosophy. For us, it means responsible project matching, transparent cooperation, and a long-term approach to professional growth.\nJoin us as Senior Software Engineer.\nIn this role, you will design and scale backend microservices for the merchant payments domain, building core services for prepaid wallets, payment gateway integrations, invoicing, and reporting\nGrow in an environment that cares about your development as much as you do.\nYour responsibilities\nDesign and deliver backend microservices in the merchant payments and reporting domain, including prepaid wallets, invoicing, and SAP / payment gateway integrations.\n\nMigrate legacy services toClean Architecture and Hexagonal Architecture, keeping domain logic framework-free and documenting choices via Architecture Decision Records.\n\nBuild event-driven integrations over REST and Kafka with Avro, enforcing idempotency and money handling correctness.\n\nOwn full lifecycle deployment and quality using Helm, GitLab CI, GitOps on Kubernetes, and testing with Spock, Testcontainers, and Spring Cloud Contract.\n\nRequirements\nExperience with backend microservices using Java or Kotlin, Spring Boot, Clean Architecture, and Hexagonal Architecture.\n\nExperience with event-driven architecture using Kafka and Avro, alongside REST integrations.\n\nKnowledge of financial logic handling, including idempotent endpoints, precise monetary calculations, and PII protection.\n\nExperience with testing and quality tools using Spock, Testcontainers\n\nExperience with GitOps and DevOps practices using Helm, GitLab CI, and Kubernetes.\n\nExperience using AI-assisted and agentic coding tools (such as Claude Code, GitHub Copilot, Cursor, or Codex)\n\nYou need to live in Poland and/or be eligible to work here.\n\nWhat we offer\nWork in a Scandinavian culture built on logic and dialogue.\nHealth and sports benefits tailored to your needs.\nSpeed Coaching - short sessions that provide new perspectives and solutions.\nSports training, an internal team, and opportunities to take part in competitions.\nTeam events and development-focused meetups.\nApply today!","description_format":"text","description_chars":2635,"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":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Consulting & Digital Transformation","Management Consulting","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-10-16T14:33:48Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":3,"expected_fill_days":31,"reasons":["conf:3","stale_co","velocity","win:early"],"computed_at":"2026-10-19T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/b3-consulting-group-senior-software-engineer","json_url":"https://alion.io/job/b3-consulting-group-senior-software-engineer.json","meta":{"generated_at":"2026-10-19T15:19:25Z","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":11280,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-20T00:00:00Z"}},"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":21061},"rest":"https://alion.io/mcp/rest/get_company?id=21061"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fb3-consulting-group-senior-software-engineer"},{"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%2Fb3-consulting-group-senior-software-engineer"},{"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%2Fb3-consulting-group-senior-software-engineer"},{"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/b3-consulting-group-senior-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fb3-consulting-group-senior-software-engineer"}]}