{"id":1410489,"url":"https://alion.io/job/anemoi-marine-senior-software-engineer-python","title":"Senior Software Engineer (Python)","company":{"id":1843146,"name":"Anemoi Marine","domain":"anemoimarine.com","url":"https://alion.io/company/anemoimarine","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"BambooHR","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":87000,"max_usd":168000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":91},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"NumPy","optional":true},{"name":"Plotly","optional":true},{"name":"Polars","optional":true},{"name":"Pydantic","optional":true},{"name":"SciPy","optional":true},{"name":"Time Series","optional":true}],"status":"live","first_seen_at":"2026-09-10T00:00:00Z","employer_posted_date":"2026-09-10","last_verified_at":"2026-11-04T18:35:53Z","board_verified":true,"closed_at":null,"days_open":55,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":55},"description":"Senior Software Engineer (Python)\nAbout Anemoi Marine Technologies\nAt Anemoi, we’re on a journey to shake up the maritime industry with cutting-edge Rotor Sail technology. From our headquarters in the UK and production base in China, we’re developing and delivering advanced, automated wind-assisted propulsion systems that help shipowners and operators reduce fuel consumption and emissions… propelling the shipping industry toward a more sustainable, decarbonised future.\nOur goal is ambitious yet simple: save 1,000 tonnes of CO2 per day by installing 500 Rotor Sails by 2030. Picture fleets of ships sailing world’s oceans with our Rotor Sail technology, harnessing renewable wind power to get the job done cleaner and more efficiently. We’re making that happen, one ship at a time.\nWe take ground breaking science and real-world engineering and turn it into products that work operationally at sea. Our diverse and collaborative teams work side by side, and around the globe, driven by a passion for sustainability and a relentless pursuit of technical excellence.\nThe mission, should you choose to accept, is to protect the maritime environment by harnessing the power of wind!\nAbout the Role\nContract Length: 3 to 6 months\nLocation: London\nWe are looking for an experienced Software Engineer to build on and lead the hands-on development of Anemoi's existing, early-stage scientific and engineering software for a defined period.\nYou will work closely with Anemoi's engineers and analysts to turn established and evolving technical methods into dependable software. You may also contribute to other Python, data, and scientific-software projects where your experience can add value.\nThis role combines delivery with technical leadership. You will make pragmatic architectural decisions, establish effective development practices, and leave the software in a state that a permanent engineer can confidently maintain and extend. A successful handover - including documentation, automated checks, clear technical decisions, and knowledge sharing - is therefore a core part of the assignment.\nYou do not need previous experience in Anemoi's technical domain, but you should be comfortable learning unfamiliar engineering concepts and working closely with subject-matter experts.\nOutside IR35 contract option may be considered for suitably experienced candidates.\nWhat you will do\nLead the design, development, testing, and delivery of scientific and engineering software.\nWork with engineers and analysts to turn technical methods and business needs into clear requirements and dependable software.\nMake pragmatic architectural decisions that balance current delivery with long-term maintainability.\nEstablish and embed practical standards for development, testing, documentation, version control, code review, continuous integration, and releases.\nEnsure scientific calculations and results are appropriately reproducible, traceable, and verified.\nDocument the software, share knowledge, and provide a structured handover to its long-term owner.\nContribute to other scientific and engineering software projects where required.\nWhat we are looking for\nEssential\nProfessional software development experience, typically four or more years, with evidence of leading the delivery of non-trivial software.\nAdvanced Python skills and strong judgement in software architecture, modularity, error handling, and the design of clear, maintainable Python interfaces.\nExperience designing, building, testing, packaging, and releasing reusable Python libraries or applications.\nExperience establishing effective engineering practices, including automated testing, code review, documentation, dependency management, continuous integration, and version control with Git.\nExperience with numerical, scientific, engineering, or data-intensive software, including appropriate verification of calculations and edge cases.\nThe ability to understand an unfamiliar method, identify ambiguity, and work with subject-matter experts to define precise, testable behaviour.\nWorking knowledge of SQL, including writing queries to retrieve, filter, join, and aggregate data.\nA pragmatic approach to technical leadership, with the ability to set direction and raise standards while continuing to deliver working software.\nStrong written and verbal communication, including experience documenting technical decisions, sharing knowledge, and handing over software to other engineers.\nThe ability to become productive quickly, work with a high degree of independence, and deliver effectively within a time-limited engagement.\nDesirable\nA degree or equivalent experience in computer science, engineering, mathematics, physics, or another quantitative discipline.\nExperience with scientific and data tools such as NumPy, SciPy, pandas or Polars, Pydantic, Plotly, or equivalent technologies.\nExperience with time-series or sensor data, data validation, numerical optimisation, simulation, statistics, or uncertainty analysis.\nFamiliarity with typed Python, developer and user documentation, linting and formatting tools, and modern Python project tooling.\nExperience verifying scientific software against analytical, experimental, or independently produced reference results.\nExperience taking ownership of an early-stage codebase and preparing it for continued development by another engineer or team.\nExperience working in an engineering-led or renewable-energy business.\nExperience handling commercially sensitive or customer-supplied technical data.\nWe do not expect one person to arrive with every desirable skill. If the core role appeals to you and your experience is transferable, we encourage you to apply.\nWhy join Anemoi?\nApply software engineering to a tangible technology that can reduce fuel use and emissions from global shipping.\nTake ownership of an important scientific-software project and make a visible impact within a defined engagement.\nEstablish an engineering foundation that will continue to benefit the team after your handover.\nWork on technically interesting problems with engineers, analysts, and maritime specialists.","description_format":"text","description_chars":6116,"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":["Sea Freight","Wind Energy"],"lifecycle":[{"event":"open","at":"2026-09-28T19:08:19Z"},{"event":"close","at":"2026-10-02T21:30:54Z"},{"event":"reopen","at":"2026-10-29T13:05:01Z"}],"visa":[],"liveness":{"score":28,"band":"fade","label":"Fading","p_open":1,"p_active":0.613,"p_room":0.45,"age_days":55,"expected_fill_days":29,"reasons":["conf:5","win:tail"],"computed_at":"2026-11-04T06:34:25Z"},"pay":null,"html_url":"https://alion.io/job/anemoi-marine-senior-software-engineer-python","json_url":"https://alion.io/job/anemoi-marine-senior-software-engineer-python.json","meta":{"generated_at":"2026-11-04T20:01:40Z","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":30861,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-05T00:00:00Z"}},"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":1843146},"rest":"https://alion.io/mcp/rest/get_company?id=1843146"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fanemoi-marine-senior-software-engineer-python"},{"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%2Fanemoi-marine-senior-software-engineer-python"},{"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%2Fanemoi-marine-senior-software-engineer-python"},{"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/anemoi-marine-senior-software-engineer-python\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fanemoi-marine-senior-software-engineer-python"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":1410489}},{"tool":"search_jobs","arguments":{"company":"anemoimarine.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":1410489},"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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