{"id":2002528,"url":"https://alion.io/job/inpost-senior-java-engineer-mfn-3","title":"Senior Java Engineer (m/f/n)","company":{"id":3343,"name":"InPost","domain":"inpost.eu","url":"https://alion.io/company/inpost","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":6,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":29,"computed_at":"2026-10-09T06:01:00Z"}},"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":58000,"max_usd":95000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":216},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"ChatGPT","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"Confluence","optional":false},{"name":"Copilot","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"Gradle","optional":false},{"name":"Hibernate","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"Maven","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring Security","optional":false},{"name":"Google Cloud Spanner","optional":true},{"name":"Google GKE","optional":true},{"name":"GraphQL","optional":true},{"name":"gRPC","optional":true},{"name":"Kotlin","optional":true}],"status":"live","first_seen_at":"2026-10-07T10:07:36Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-09T23:11:20Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"InPost Group is an innovative European out of home deliveries company, revolutionizing the way parcels are delivered to customers. With operations across several countries, our network of intelligent lockers provides customers with a fast, convenient, and secure delivery option. InPost Group is a publicly traded company, with a market capitalization of about $5 billion as of March 2023. With over 10,000 people worldwide, InPost Group is one of the largest out of home delivery providers in Europe, committed to providing sustainable and efficient delivery solutions to meet the evolving needs of customers in today's rapidly changing landscape.\nWe are currently hiring Senior Engineers for two different teams:\n1. InPost Pay - a comprehensive e-commerce solution offering a unified platform for payment and delivery. InPost Pay allows users to pay and arrange delivery with one button on the product card, transferring the basket and order to the InPost app. It simplifies the shopping experience by consolidating payments, deliveries, and order tracking into a single app, eliminating the need for multiple emails and messages from different stores\n→Hybrid model: 1 day per week from the office in Warsaw or Kraków, remaining days remote\n2. Merchant Portal - a new, InPost-owned platform that serves as a central hub for all merchant-facing services. This covers the full merchant journey: onboarding, shipping, and access to other InPost products. The team acts as a core/platform team, meaning they provide shared services and infrastructure consumed by other InPost teams.\n→ Fully remote position\n Your responsibilities:\nEngineering\nDesign and implement high-performance microservices in Java / Spring Boot\nBuild and maintain event-driven integrations using Apache Kafka\nOwn the data layer: schema design, query optimisation, migrations (PostgreSQL)\nWork within a containerised cloud-native environment: Docker, Kubernetes, GCP\nHold the bar on code quality through reviews, testing standards, and CI/CD discipline\nMentor team members and advocate for a culture of quality and continuous improvement\nOwnership & Delivery\nTake full ownership of features end-to-end - from requirements to production and beyond\nWork directly with business stakeholders to challenge assumptions and align on solutions\nYou understand your product deeply - the business context, the customer impact, the why behind every feature\nWorking across a large organisation with many teams is complex. You navigate that complexity, build bridges, and push things over the finish line\nWrite clear technical documentation: System Design docs, RFCs, and ADRs\nIdentify and address technical debt proactively - before problems become incidents\nParticipate actively in architecture discussions with well-reasoned proposals\n 5+ years of commercial Java development (Java 11/17+, Spring Boot, Spring Security, JPA/Hibernate)\nStrong experience with distributed systems - microservices, event-driven patterns, inter-service communication\nDeep JVM internals: memory model, GC tuning, concurrency, performance profiling\nApache Kafka - producers, consumers, consumer groups, offset management, error handling\nPostgreSQL - relational modelling, indexing strategy, query plans, schema migrations\nDocker + Kubernetes - day-to-day production usage\nMaven/Gradle, Git, JIRA, Confluence, Code Reviews, CI/CD\nProven ability to work with non-technical stakeholders and write design documents others want to read\nEnglish B2+ - team and stakeholder communication\nProficiency in leveraging AI tools and large language models (e.g., GitHub Copilot, ChatGPT, Claude) to enhance productivity, accelerate development, and solve complex problems. \nAbility to critically evaluate AI-generated outputs and apply them responsibly within professional workflows.\nNice-to-have\nKotlin development experience\nDomain-Driven Design (DDD), CQRS, Event Sourcing\ngRPC, GraphQL\nGCP: Cloud Functions, Pub/Sub, GKE, Cloud Spanner\nMongoDB\nExperience with high-throughput, low-latency systems\nBackground in e-commerce, logistics, or fintech\nWhy Join InPost?\nOpportunity to work in a diverse, international, and cross-functional environment, along with leading experts. \nYou work and learn from a senior leader and their leadership team, expanding your experience and exposure in the e-commerce and logistics industries. \n InPost is a growing company that offers its people an increasing number of opportunities in several locations in Europe. \nFulfilling careers with a range of benefits and investing in providing training opportunities for people development. \nYou will feel a part of the InPost community that makes an impact on sustainability, convenient deliveries, and the circular economy every day. \nExcellent working environment and flexible hours\n We offer B2B type of Contract","description_format":"text","description_chars":4815,"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":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Commerce","Transportation & Logistics"],"lifecycle":[{"event":"open","at":"2026-10-07T12:05:22Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":29,"reasons":["conf:2","velocity","win:early"],"computed_at":"2026-10-09T06:01:00Z"},"pay":null,"html_url":"https://alion.io/job/inpost-senior-java-engineer-mfn-3","json_url":"https://alion.io/job/inpost-senior-java-engineer-mfn-3.json","meta":{"generated_at":"2026-10-10T02:21:47Z","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","counted_by":"address","units_charged":1,"used_today":4296,"day_limit":5000,"remaining_today":704,"minute_limit":60,"resets_at":"2026-10-11T00:00:00Z"}},"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":3343},"rest":"https://alion.io/mcp/rest/get_company?id=3343"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Finpost-senior-java-engineer-mfn-3"},{"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%2Finpost-senior-java-engineer-mfn-3"},{"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%2Finpost-senior-java-engineer-mfn-3"},{"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/inpost-senior-java-engineer-mfn-3\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Finpost-senior-java-engineer-mfn-3"}]}