{"id":3416059,"url":"https://alion.io/job/sedna-senior-software-engineer-2","title":"Senior Software Engineer","company":{"id":2057851,"name":"Sedna","domain":"sedna.com","url":"https://alion.io/company/sedna-com","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Copenhagen, Denmark","Denmark"],"countries":["DK"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":83000,"max_usd":171000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":9},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"GitLab CI","optional":false},{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Oracle","optional":false},{"name":"Playwright","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Postman","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Scala","optional":false},{"name":"SQL","optional":false},{"name":"Agile","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-28T17:09:59Z","employer_posted_date":"2026-10-28","last_verified_at":"2026-10-29T16:49:28Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Senior Software Engineer\nOur Tech Stack: https://stackshare.io/companies/sedna\n\nAbout Sedna:\nSedna is at the forefront of revolutionising the operating system for shipping. Our AI-powered platform is designed to make global trade more efficient, transparent, and sustainable. As we continue to grow and innovate, we are looking for exceptional talent to join our journey and contribute to our mission of transforming the shipping industry .\nYou can find out more about us on our website: https://sedna.com/\n\nAbout the role\nThis role focuses on contributing to the design, development, and evolution of Sedna’s VMS (Voyage Management System). It's a mature, highly specialised platform that shipowners, operators and charterers use to run chartering, voyage operations, cargo and freight/hire invoicing. \nVMS has a Java backend exposing a REST API used by our own web client (React) and directly by customers' integrations. Data lives in Oracle, including a significant amount of business logic in PL/SQL. It runs on AWS and builds through GitLab CI/CD.\nSedna VMS is in use 24/7 by shipping companies worldwide. Customers run their daily operations and invoicing on it, so correctness, performance and reliability directly affect their business.\nYou will play a key part in raising standards and delivering new features. You'll take real ownership of features and of how they behave in production, on a product customers run their business on, and help shape how the platform evolves. You'll work with modern AI-assisted development tools as part of everyday engineering.\n\nHow you’ll make an impact\nEngineering and feature development\nThis role contributes primarily to the backend, with occasional involvement in frontend development. Day-to-day responsibilities include understanding requirements, shaping technical approaches, writing code, and contributing to automated tests. Development work spans a mix of new features, improvements, and maintenance, driven by both customer and product needs.\nSystem architecture and modernisation\nThe role includes participating in ongoing efforts to refine and modernise the platform. This involves contributing to technical upgrade work, improving system structure, and supporting longer-term architectural direction as the product grows. Opportunities exist to participate in design discussions and help shape solutions that improve system performance, reliability, and extensibility.\nQuality, testing, and delivery practices\nThe team maintains a focus on software quality. We combine unit tests, API regression tests (Postman) and UI tests (Playwright) with peer code review on every merge request. Releases are built and tested through GitLab CI/CD. We're actively improving here: getting more of our test suites running automatically in CI and making them reliable. Engineers who want to drive that, will have room to do it.\nCollaboration with product and customer-facing teams\nThe role involves close collaboration with product managers through refinement, planning, and solution discussions. Engineers also interact with Customer Support on cases that need engineering input, and, for larger projects, join customer conversations to validate technical approaches.\nContinuous improvement and documentation\nWe treat documentation, including API references, design decisions and runbooks, as part of delivering a change. Much of VMS's knowledge still sits with experienced team members, and capturing it in written, searchable form is an active priority. We also reserve time for technical debt and internal improvements.\n\nIn your first 90 days, you can expect\nMonth 1: Build your understanding of Sedna’s architecture and our products. Get set up with the VMS codebase, your dev environment and the release process, and ship your first changes. Meet your team, product manager and key customer-facing colleagues. Learn the maritime workflows our customers depend on. \nMonth 2: Take ownership of a well-scoped piece of work from refinement with product through to release. Contribute to design discussions, give timely and constructive code review feedback. Shadow the on-call rotation and get familiar with runbooks and production tooling.\nMonth 3: Lead the technical approach on a complex feature or improvement within your team, working independently and raising risks and dependencies early. Join the on-call rotation. Contribute improvements to tests, runbooks or documentation based on what you found hard to learn, and support technical validation in a customer conversation where relevant.\n\nWhat we're looking for:\nEssential experience\nCandidates typically bring three+ years of professional engineering experience from a comparable environment. Experience working on production systems where quality and reliability are important. Familiarity with a JVM language (Java, Kotlin, Scala) or a similar backend language, React or another modern frontend framework. Strong SQL and relational database skills, ideally Oracle or PostgreSQL, including query performance. Experience supporting production systems: diagnosing incidents from logs and metrics. Prior on-call experience is a plus.\nCritical skills\nA strong grasp of building and maintaining features within a larger system is helpful. Confidence with automated testing, CI/CD pipelines, and code review workflows is expected. Clear thinking, good problem-solving ability, and the capacity to work with domain-heavy logic contribute to success in the role. Experience with enterprise or workflow-driven applications is an advantage.\nTraits and mindset\nCuriosity and a willingness to learn the maritime domain are appreciated. A collaborative working style, comfort sharing ideas in cross-functional settings, and the ability to work independently when needed all support strong performance. Adaptability is important as the product and architecture continue to evolve.\nCore competencies\nSystems thinking, ownership of outcomes, strong communication skills, and effective collaboration are central to this role. A motivation to create value for customers and contribute to a stable, evolving platform is essential.\n\nWhat’s In Store for You\nA strong team. You’ll join a global team of senior and staff engineers who set a high bar and will help level you up.\nA generous salary and benefits package (depending on experience) + private medical, equity, health and wellbeing benefits, home internet contribution\nScalability challenges. You’ll be a part of evolving our VMS system as we further develop in to a product led company.\nCustomer impact. Real customers use our products everyday, you'll see your work impacting real people.\nCollaboration & autonomy. Plenty of heads-down technical work, but also close partnership with product engineers and engineering leadership.\nOur Values:\nFinally, culture is important to us, so we also look for candidates who share our values:\nStay Ahead, Stay Agile\nWe don’t just adapt-we anticipate change and act with confidence.\nCuriosity, data, and customer insights help us stay ahead of the curve.\nWe embrace challenges as opportunities and remain resilient under pressure.\nBy staying open to new ideas and ways of working, we lead the future.\nExecute With Focus\nWe turn strategy into action, delivering measurable results that matter.\nEvery initiative counts-discipline and ownership drive business impact.\nWe make smart decisions with speed, balancing pace and precision.\nClear priorities keep us focused on what moves the needle.\nWork Together, Win Together\nCollaboration is our superpower-we succeed as one team, internally and with customers.\nWe co-create solutions, seek feedback, and build the future of Sedna together.\nStrong relationships are built on trust, respect, and shared goals. \nBy aligning across teams and with customers, we unlock greater impact.","description_format":"text","description_chars":7807,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Software","Marketplaces","Operating Systems"],"lifecycle":[{"event":"open","at":"2026-10-28T19:27:07Z"}],"visa":[],"liveness":{"score":95,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.946,"p_room":1,"age_days":0,"expected_fill_days":36,"reasons":["conf:2","wave","win:early"],"computed_at":"2026-10-29T05:49:05Z"},"pay":null,"html_url":"https://alion.io/job/sedna-senior-software-engineer-2","json_url":"https://alion.io/job/sedna-senior-software-engineer-2.json","meta":{"generated_at":"2026-10-29T20:47:57Z","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":30758,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-30T00:00:00Z"}},"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":2057851},"rest":"https://alion.io/mcp/rest/get_company?id=2057851"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsedna-senior-software-engineer-2"},{"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%2Fsedna-senior-software-engineer-2"},{"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%2Fsedna-senior-software-engineer-2"},{"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/sedna-senior-software-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsedna-senior-software-engineer-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3416059}},{"tool":"search_jobs","arguments":{"company":"sedna.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3416059},"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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