{"id":959614,"url":"https://alion.io/job/zerofy-senior-software-engineer-typescript-node-js-cloud-ai-energy","title":"Senior Software Engineer (TypeScript, Node.js, Cloud, AI, Energy)","company":{"id":690127,"name":"Zerofy","domain":"zerofy.net","url":"https://alion.io/company/zerofy","size_band":"1-10","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":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tallinn, Estonia"],"countries":["EE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":62000,"max_usd":106000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":11},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Claude","optional":false},{"name":"Cursor","optional":false},{"name":"GCP","optional":false},{"name":"Node JS","optional":false},{"name":"TypeScript","optional":false},{"name":"BigQuery","optional":true},{"name":"Firestore","optional":true},{"name":"Google BigQuery","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-02-21T06:19:34Z","employer_posted_date":"2026-02-21","last_verified_at":"2026-10-10T22:42:36Z","board_verified":true,"closed_at":null,"days_open":231,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":230},"description":"About Zerofy\nAt Zerofy, we are building the AI and cloud platform powering the electrified home.\nOur system integrates solar, batteries, EV chargers, heat pumps, and dynamic tariffs into a single intelligent optimization layer. Using our own forecasting and control algorithms-developed together with research partners and universities-our platform autonomously optimizes household energy usage to reduce household energy cost and helps to stabilize the grid.\nWe operate a pure cloud architecture serving solar installers and some of Europe’s largest energy companies through our B2B platform.\nOur mission is to become the intelligence layer for residential energy.\nThe Role\nWe are looking for a Senior Software Engineer who cares deeply about engineering craftsmanship, enjoys solving complex technical problems, and wants to build systems at the frontier of cloud, AI, and energy.\nYou will design and build core parts of our platform, working across backend services, cloud infrastructure, device integrations, and AI-driven systems.\nThis role comes with a high degree of ownership and autonomy. You will own systems end-to-end, influence architecture, and help shape the technical direction of the company.\nYou will also mentor junior engineers and contribute to building a strong engineering culture.\nOur Tech Stack\nOur backend is built primarily in TypeScript running on Node.js, using a cloud-native, serverless architecture on Google Cloud Platform. We use services such as Cloud Functions, Pub/Sub, Firestore, and BigQuery to build scalable, event-driven distributed systems. Our platform integrates with a wide range of external APIs and IoT devices, including solar inverters, batteries, EVs, and heat pumps.\nA core part of our platform includes proprietary forecasting, optimization, and control algorithms developed in collaboration with research partners and universities.\nWe also use modern AI coding tools extensively, including Claude, Cursor, Conductor, and similar frontier tools. We expect engineers to actively leverage AI-assisted development to increase velocity and capability.\nWhat You’ll Do\nDesign and implement core backend systems using TypeScript and Node.js\n\nArchitect and build scalable, reliable cloud-native services\n\nOwn technical components end-to-end, from design to production\n\nBuild distributed, event-driven systems running on Google Cloud\n\nIntegrate external APIs from energy devices, EVs, and IoT systems\n\nWork closely with our AI and algorithm systems powering optimization and forecasting\n\nMake architectural decisions and improve system design, reliability, and performance\n\nMentor junior engineers and help raise the engineering bar of the team\n\nUse modern AI coding tools extensively to accelerate development\n\nContribute to a culture of engineering craftsmanship and continuous improvement\n\nWhat We Offer\nHigh degree of ownership and autonomy\n\nOpportunity to shape the architecture and core systems\n\nWork on meaningful problems with real-world climate impact\n\nSmall, highly capable, senior team\n\nExtensive use of frontier AI tools in engineering workflows\n\nCompetitive salary and equity participation\n\nFlexible remote / hybrid setup\n\nOffice in Tallinn, Estonia\n\n5 weeks vacation\n\nCoworking support\n\nWhy Join Zerofy\nYou’ll work on one of the most important technical challenges of the coming decades: building the intelligence layer for electrified energy systems.\n\nThis is an opportunity to build complex, meaningful systems with real-world impact, in an environment that values engineering excellence, ownership, and innovation.\n\nRequirements\nWhat We’re Looking For\nRequired\n5+ years of professional software engineering experience\n\nStrong expertise in backend engineering using TypeScript and Node.js\n\nExperience building cloud-native distributed systems\n\nStrong engineering craftsmanship and attention to quality\n\nExperience owning complex systems or components end-to-end\n\nAbility to design systems and architecture, not just implement tasks\n\nExperience mentoring engineers and contributing to a strong engineering culture\n\nAbility to operate with a high degree of ownership and autonomy\n\nStrong interest in modern engineering tools, including AI-assisted coding\n\nHighly valued\nExperience with Google Cloud Platform, AWS, or similar\n\nExperience with serverless architectures and event-driven systems\n\nExperience integrating external APIs or hardware/IoT systems\n\nExperience working on applied AI, data systems, or optimization systems\n\nExperience using modern AI coding tools such as Claude, Cursor, or similar\n\nIdeal Candidate\nThe ideal candidate:\nIs a strong engineering craftsperson\n\nTakes pride in building high-quality, reliable systems\n\nEnjoys working on complex technical problems\n\nHas strong ownership mentality and operates autonomously\n\nStays at the forefront of technology and modern engineering practices\n\nIs curious, pragmatic, and execution-focused\n\nBonus points if you:\n\nOwn or are interested in solar, batteries, EVs, or heat pumps\n\nAre interested in energy systems, electrification, or climate tech","description_format":"text","description_chars":5065,"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":[]},"benefits":["Equity"],"hiring_locations":[{"name":"Estonia","iso":"EE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Energy & Utilities","Energy Management"],"lifecycle":[{"event":"open","at":"2026-09-16T08:28:50Z"},{"event":"open","at":"2026-09-26T08:48:07Z"}],"visa":[],"liveness":{"score":5,"band":"cold","label":"Long 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