{"id":3118174,"url":"https://alion.io/job/axpo-senior-backend-developer-fmd","title":"(Senior) Backend Developer (f/m/d)","company":{"id":453589,"name":"Axpo","domain":"axpo.com","url":"https://alion.io/company/axpo-2","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"B","score":78,"open_postings":17,"ghost_share":0,"stale_share":0.882,"repost_share":0,"time_to_fill_p50_days":39,"computed_at":"2026-11-06T05:58:05Z"}},"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":69000,"max_usd":116000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":352},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"GCP","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"Terraform","optional":false},{"name":"CI/CD","optional":true},{"name":"Databricks","optional":true},{"name":"SQL","optional":true}],"status":"live","first_seen_at":"2026-10-19T13:04:48Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-11-06T09:43:39Z","board_verified":true,"closed_at":null,"days_open":17,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":17},"description":"Join Axpo in shaping the future of energy. As part of our Batteries team, you'll build the software that powers smarter, cleaner energy systems across Europe. We value diversity and welcome your unique perspective.\nWhat you will do:\nArchitect, develop, and deploy back- and front-end Python applications, integrating our battery optimizer into Axpo's IT infrastructure\n\nEnhance our mixed-integer linear programming (MILP) optimization engine, customizing it for battery projects across different countries and markets\n\nAdvise and support team members on software engineering best practices and design patterns\n\nCollaborate with internal teams across Europe and align with external software providers to ensure seamless system integration\n\nServe as a point of contact for internal users of our optimization software, addressing questions and requests\n\nCoordinate and implement software changes and updates to meet user needs\n\nWhat you bring & who you are:\nUniversity degree in computer science, engineering, mathematics, natural sciences, or a related discipline\n\nYou have 3+ years of experience in Python or another object-oriented language, ideally as a software engineer in the energy sector or a related field\n\nExperience with backend development in distributed systems using REST APIs and message queues, e.g., FastAPI and Azure Service Bus\n\nFamiliarity with infrastructure as code to ship containerized software to the cloud - ideally Terraform, Azure, and Docker; experience with Google Cloud Platform is a plus\n\nYou're comfortable with modern engineering practices such as CI/CD, code reviews, and automated testing\n\nIdeally, you bring experience with mathematical optimization (especially MILP), Databricks, frontend development, or SQL\n\nWhat we offer:\nFull-time job based on employment contract.\n\nDevelopment in an international company that is shaping the face of the energy market.\n\nA progressive medical care package that takes care of your health and well-being.\n\nCo-financing of the Multisport card, enabling the use of various forms of physical activity.\n\nForeign language classes during working hours.\n\nFlexible working hours and the possibility to work in hybrid mode.\n\nAn office with a beautiful view, located in the city center.\n\nA motivated team, ready to guide you through your daily challenges.\n\nDetails about the salary range for this position and other components of the compensation package will be provided in the following stages of the recruitment process.\nAt Axpo Group, we are dedicated to fostering a culture of non-discrimination, tolerance, and inclusion. As an equal opportunity employer, we welcome applications regardless of race and ethnicity, gender identity and expression, sexual orientation, age, disability, as well as socioeconomic, cultural, and religious background. We are committed to ensuring a respectful and inclusive recruiting process and workplace for everyone.","description_format":"text","description_chars":2914,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Hybrid work"],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Power Grid"],"lifecycle":[{"event":"open","at":"2026-10-22T23:12:53Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 1","filings_12m":1,"filings_prev_12m":0,"green_card_filings_12m":0,"median_offered_wage_usd":182500,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":57,"band":"ok","label":"Likely open","p_open":1,"p_active":0.628,"p_room":0.9,"age_days":17,"expected_fill_days":39,"reasons":["conf:1","stale_co","velocity","win:mid"],"computed_at":"2026-11-06T05:58:05Z"},"pay":null,"html_url":"https://alion.io/job/axpo-senior-backend-developer-fmd","json_url":"https://alion.io/job/axpo-senior-backend-developer-fmd.json","meta":{"generated_at":"2026-11-06T12:40:22Z","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":23053,"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":453589},"rest":"https://alion.io/mcp/rest/get_company?id=453589"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Faxpo-senior-backend-developer-fmd"},{"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%2Faxpo-senior-backend-developer-fmd"},{"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%2Faxpo-senior-backend-developer-fmd"},{"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/axpo-senior-backend-developer-fmd\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Faxpo-senior-backend-developer-fmd"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3118174}},{"tool":"search_jobs","arguments":{"company":"axpo.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3118174},"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. Docs: https://alion.io/developers"}}