{"id":790830,"url":"https://alion.io/job/fifty-full-stack-developer","title":"Full stack developer","company":{"id":676019,"name":"Fifty Energy","domain":"fifty.energy","url":"https://alion.io/company/fifty-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Åre, Sweden"],"countries":["SE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":47000,"max_usd":126000,"period":"year","method":"role_country_seniority_unknown","sample_n":18},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"gRPC","optional":false},{"name":"Machine Learning","optional":false},{"name":"MQTT","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2025-03-03T12:16:07Z","employer_posted_date":"2025-03-03","last_verified_at":"2026-11-01T19:55:31Z","board_verified":true,"closed_at":null,"days_open":608,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":607},"description":"About Us\nFifty Energy is on a mission to transform how energy is consumed. Our AI solutions redefine the way customers interact with and optimize their energy assets-maximizing value, efficiency, and flexibility. The Fifty AI platform supercharges Power Utilities and Energy companies by enhancing their products and services with advanced AI capabilities-unlocking new value creation for the end user. We are a fast-growing startup at the intersection of AI and energy, building the next generation of intelligent energy management - come join us!\nThe Role\nWe’re looking for a talented Full-Stack Developer to join our team. You’ll work on both the front-end and back-end of our AI-powered platform, delivering seamless, user-friendly experiences while optimizing the underlying systems for scalability and performance. Your work will integrate AI-driven functionalities that help our users interact with renewable energy and battery storage solutions in smarter, more efficient ways.\nWhat You’ll Do\nDevelop and maintain both front-end and back-end systems that leverage AI for real-time energy optimization.\n\nBuild user-friendly, scalable web applications and services with AI-enhanced capabilities.\n\nWork closely with AI specialists, designers, and back-end developers to create integrated, intelligent solutions.\n\nDesign and implement API integrations with third-party hardware providers and energy systems.\n\nEnsure high performance, security, and reliability of applications, particularly for AI-driven functionalities.\n\nContinuously improve code quality, test coverage, and system performance, focusing on AI model efficiency and scalability.\n\nWhat We’re Looking For\nDeep knowledge in both front-end (TypeScript, React) and back-end development (Python).\n\nExperience working with AI and machine learning models, and an understanding of how to integrate them into applications.\n\nProficiency with databases (PostgreSQL) and API design (RESTful, MQTT, gRPC).\n\nExperience with cloud platforms like AWS, GCP, or Azure.\n\nFamiliarity with CI/CD pipelines, containerization (Docker), and version control (Git).\n\nStrong problem-solving skills with a focus on maintainable, clean code.\n\nExperience in agile development and cross-functional collaboration.\n\nBonus: Experience with energy systems, IoT, or renewable technologies.\n\nJoin us\nReady to help power the future of energy? Our HQ is in Åre, where we love mixing work with fun in the mountains. We’re also hiring for our Stockholm office, which regularly makes its way up to HQ for some mountain time!","description_format":"text","description_chars":2551,"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":["Energy Management","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-09-12T03:27:14Z"},{"event":"open","at":"2026-09-26T15:33:43Z"}],"visa":[],"liveness":{"score":4,"band":"cold","label":"Long shot","p_open":1,"p_active":0.129,"p_room":0.28,"age_days":607,"expected_fill_days":24,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/fifty-full-stack-developer","json_url":"https://alion.io/job/fifty-full-stack-developer.json","meta":{"generated_at":"2026-11-01T19:56:27Z","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":30687,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-02T00:00:00Z"}},"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":676019},"rest":"https://alion.io/mcp/rest/get_company?id=676019"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffifty-full-stack-developer"},{"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%2Ffifty-full-stack-developer"},{"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%2Ffifty-full-stack-developer"},{"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/fifty-full-stack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffifty-full-stack-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":790830}},{"tool":"search_jobs","arguments":{"company":"fifty.energy","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":790830},"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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