{"id":2535145,"url":"https://alion.io/job/jit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk","title":"Hapag Lloyd - Senior Backend Software Engineer (Apollon) - Gdańsk","company":{"id":53531,"name":"Jit Team","domain":"jit-team.com","url":"https://alion.io/company/jit-team","size_band":"5000+","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Traffit","truth_index":{"grade":"B","score":80,"open_postings":43,"ghost_share":0,"stale_share":0.791,"repost_share":0,"time_to_fill_p50_days":31,"computed_at":"2026-11-05T05:54:30Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Gdańsk, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":1200,"max":1360,"currency":"PLN","period":"day","gross":false,"usd_annual":87500},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon Aurora","optional":false},{"name":"Amazon ECS","optional":false},{"name":"Amazon EventBridge","optional":false},{"name":"Amazon Kinesis","optional":false},{"name":"Amazon S3","optional":false},{"name":"Apache Kafka","optional":false},{"name":"API Gateway","optional":false},{"name":"AWS","optional":false},{"name":"AWS Fargate","optional":false},{"name":"AWS Step Functions","optional":false},{"name":"CloudFormation","optional":false},{"name":"DynamoDB","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Scala","optional":false},{"name":"Java","optional":true},{"name":"Kotlin","optional":true}],"status":"live","first_seen_at":"2026-10-14T12:18:29Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-11-06T01:54:50Z","board_verified":true,"closed_at":null,"days_open":22,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":22},"description":"Salary: 1200 - 1360 PLN/dzień net+vat B2B\nWork model: Hybrid - 1 day per week from the Gdańsk office\nWhy choose this offer?\nYou can expect a flexible work organization\nThe international work environment will give you the opportunity to interact with the English language on a daily basis\nThe Jit community will bring you a nice time during regular integration meetings\nProject\nJoin a mature, self-organised agile team responsible for customer-facing tracking products. The project focuses on consolidating tracking channels into a single customer entry point, introducing new customer notifications and scaling event-driven APIs.\nResponsibilities\nDesign, develop and optimise serverless and event-driven backend services on AWS.\n\nImprove AWS architecture in terms of cost, performance, scalability and resilience.\n\nOptimise event stream processing, including throughput, latency, message ordering, retries and error handling.\n\nImprove PostgreSQL performance through query optimisation, indexing, partitioning and data modelling.\n\nImplement observability solutions, including metrics, distributed tracing, alerting and SLOs.\n\nEnsure code quality through unit and integration testing, as well as load and performance testing.\n\nContribute to architectural discussions and evaluate technical trade-offs.\n\nExpected competences and knowledge\n5+ years of back-end development experience with Python or Scala.\n\n5+ years of hands-on AWS experience in production.\n\nExperience with AWS services: API Gateway, Step Functions, ECS/Fargate, SQS, SNS, EventBridge, Kinesis and/or Amazon MSK (Kafka).\n\nKnowledge of RDS/Aurora PostgreSQL, DynamoDB and S3.\n\nStrong understanding of event-driven architecture, message processing, idempotency, retries, dead-letter queues and schema evolution.\n\nStrong PostgreSQL optimisation skills, including query analysis, indexing, partitioning, connection pooling and replication.\n\nExperience with database migrations, backups and point-in-time recovery.\n\nExperience with Infrastructure as Code, particularly CloudFormation.\n\nKnowledge of unit, integration, load and performance testing.\n\nExcellent communication skills, a proactive approach to architecture and technology, and proficiency in written and spoken English.\n\nNice to have\nExperience with Scala, Kotlin or Java.\n\nExperience with CDC tools, such as Debezium or AWS DMS.\n\nAWS certifications, such as Solutions Architect, DevOps Engineer Professional or Data Engineer.\n\nKnowledge of HL IT products or the container shipping industry.\n\nTechnologies you'll work with\nPython or Scala\n\nAWS\n\nAPI Gateway, Step Functions, ECS/Fargate\n\nSQS, SNS, EventBridge, Kinesis Data Streams / Firehose, Amazon MSK (Kafka)\n\nRDS / Aurora PostgreSQL, DynamoDB, S3\n\nCloudFormation\n\nClient - why choose this particular client from the Jit portfolio?\nClient is one of the global leaders in maritime transport - especially container transport. They currently operates a fleet of over 250 modern container ships that serve customers all over the world, connects more than 600 ports and transports several million containers annually.\nClient's IT department is responsible for developing and maintaining internal IT systems that are responsible for planning, monitoring and accounting for the company's core business. The department operates globally within offices in various parts of the world - including, as part of the Gdansk office established in 2020.\nAbout Jit Team\nThe Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.\nBehind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.","description_format":"text","description_chars":4500,"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":"All levels","optional":false}]},"benefits":["Flexible schedule","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-10-14T14:01:20Z"}],"visa":[],"liveness":{"score":46,"band":"ok","label":"Likely open","p_open":1,"p_active":0.611,"p_room":0.75,"age_days":21,"expected_fill_days":31,"reasons":["conf:0","stale_co","velocity","win:late","comp:brand"],"computed_at":"2026-11-05T05:54:30Z"},"pay":{"stated_usd_annual":87500,"is_top_pay":false},"html_url":"https://alion.io/job/jit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk","json_url":"https://alion.io/job/jit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk.json","meta":{"generated_at":"2026-11-06T02:40:18Z","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":4601,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"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":53531},"rest":"https://alion.io/mcp/rest/get_company?id=53531"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fjit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk"},{"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%2Fjit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk"},{"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%2Fjit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk"},{"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/jit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fjit-team-hapag-lloyd-senior-backend-software-engineer-apollon-gdansk"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2535145}},{"tool":"search_jobs","arguments":{"company":"jit-team.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2535145},"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. 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