{"id":61381,"url":"https://alion.io/job/1komma5-principal-software-engineer-mfd","title":"Principal Software Engineer (m/f/d)","company":{"id":20553,"name":"1Komma5","domain":"1komma5.com","url":"https://alion.io/company/1komma5","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":{"grade":"B","score":77,"open_postings":304,"ghost_share":0.303,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":163,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Berlin, Germany"],"countries":["DE"],"hiring_countries":["DE"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":86000,"max_usd":170000,"period":"year","method":"role_seniority_country_cell","sample_n":8},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"AI Agents","optional":false},{"name":"BigQuery","optional":false},{"name":"CI/CD","optional":false},{"name":"Cursor","optional":false},{"name":"Datadog","optional":false},{"name":"Figma","optional":false},{"name":"GCP","optional":false},{"name":"GitHub Actions","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Google Cloud Run","optional":false},{"name":"Google GKE","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linear","optional":false},{"name":"Looker","optional":false},{"name":"Miro","optional":false},{"name":"MQTT","optional":false},{"name":"Nest.JS","optional":false},{"name":"Notion","optional":false},{"name":"OpenTelemetry","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Ruby on Rails","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false},{"name":"Vercel","optional":false},{"name":"JavaScript","optional":true},{"name":"Node JS","optional":true},{"name":"Ruby","optional":true}],"status":"live","first_seen_at":"2026-07-29T14:44:29Z","employer_posted_date":"2026-07-29","last_verified_at":"2026-10-17T20:28:53Z","board_verified":true,"closed_at":null,"days_open":80,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":79},"description":"1KOMMA5°\nAt 1KOMMA5°, we pursue a clear vision: Living on wind and sunlight forever for free. To make this a reality, we are building the energy system of the future with Heartbeat AI. Want to be part of it?We bring together regional craftsmanship and scalable software: We don't think of solar, batteries, heat pumps, and e-mobility as isolated components, but control them as an intelligent, integrated overall system in our virtual power plant. Directly connected to the electricity market - in real time, fully automated. This way, energy is used when it is available from renewables and particularly cost-effective. By 2030, our goal is to transition 1.5 million households to renewable energies. Over 3,000 people are working towards this every day, at more than 80 locations worldwide, from Finland to Australia.\nWant to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow.\nLearn more about our Product & Tech team!\nYour mission\nShape the organisation's technical strategy and innovation efforts\n\nAccountable for consistent execution of technical decisions by setting clear direction and holding teams accountable for implementation\n\nEnsure continuously that our software architecture is shaped in close alignment with product management to support current and future product direction\n\nLead architectural direction to enable the delivery of scalable, maintainable, and state-of-the-art solutions\n\nTranslate business requirements into technical solutions\n\nTackle and resolve deep technical challenges with urgency and precision\n\nMentor and challenge engineers to accelerate their professional growth\n\nBuild and scale a high-performance tech organisation and engineering culture\n\nEmbed security and reliability as direct customer value\n\nArchitect our systems and APIs so AI agents operate as first-class users with machine-readable contracts and structured errors that let agents self-correct\n\nDrive the org's transformation to agentic engineering, reshaping how teams work so agents execute safely while humans stay accountable\n\nTechnologies you will work with include:\nAI-assisted development with Cursor and agentic coding workflows\n\nCloud & Infra: Google Cloud Platform, GKE (Kubernetes), Cloud Run, Terraform/IaC, Vercel\n\nMessaging & IoT: Eclipse Hono, MQTT, Mender\n\nData & BI: PostgreSQL, BigQuery, SQLMesh, Looker\n\nObservability: Datadog, OpenTelemetry\n\nLanguages: TypeScript (Nest.js), Java, Go, Flutter, Ruby on Rails\n\nDevOps: CI/CD pipelines (GitHub Actions)\n\nLinear, Notion, Figma, Miro\n\nYour profile\nExtensive hands-on experience in software development with multiple general-purpose programming languages for a minimum of 5 years\n\nA proven track record of architecting scalable and secure systems, demonstrating a strong commitment to quality\n\nExtensive experience in designing and implementing APIs that enable seamless integration and system communication\n\nAn agile and result-oriented mindset, with a strong emphasis on collaboration and teamwork\n\nExperience communicating with stakeholders in business terms and understanding the technical implications of their requirements\n\nIndustry-leading experience driving cross-functional teams and enforcing engineering alignment in fast-paced environments, including making and following through on critical technical decisions\n\nExperience designing systems and APIs for agent consumption, with structured errors and clear contracts that let agents self-correct\n\nCapability to guide an engineering team through the shift to agentic engineering, reshaping workflows so agents execute safely while humans stay accountable for every outcome\n\nStrong verbal and written communication skills in English, with proficiency in German considered a plus\n\nBenefits\nYou are part of an international, dynamic, and highly motivated team of people who have proven to make things happen\nWith your work, you accelerate the \"energy transition\" and hence have a direct impact on our climate\nWork with and learn from other super-smart colleagues\nYou will enjoy direct contact with core decision-makers\nYou will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups\nYou work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich\nCreate a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass\nBenefits and discounts are yours with Futurebens\nWhether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time\nIndividualised opportunities for professional development\nReporting directly to the CTO","description_format":"text","description_chars":4638,"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":[{"language":"German","level":"Advanced (C1)","optional":false},{"language":"English","level":"All levels","optional":false}]},"benefits":["Professional development"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Energy & Utilities"],"lifecycle":[{"event":"open","at":"2026-07-29T14:44:29Z"},{"event":"open","at":"2026-09-05T14:40:00Z"},{"event":"open","at":"2026-09-10T07:20:00Z"},{"event":"close","at":"2026-09-22T08:24:55Z"},{"event":"reopen","at":"2026-09-22T20:03:21Z"}],"visa":[],"liveness":{"score":62,"band":"ok","label":"Likely open","p_open":1,"p_active":0.859,"p_room":0.72,"age_days":79,"expected_fill_days":163,"reasons":["conf:1","velocity","win:mid","crowd:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/1komma5-principal-software-engineer-mfd","json_url":"https://alion.io/job/1komma5-principal-software-engineer-mfd.json","meta":{"generated_at":"2026-10-17T20:54:27Z","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":5201,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":20553},"rest":"https://alion.io/mcp/rest/get_company?id=20553"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2F1komma5-principal-software-engineer-mfd"},{"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%2F1komma5-principal-software-engineer-mfd"},{"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%2F1komma5-principal-software-engineer-mfd"},{"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/1komma5-principal-software-engineer-mfd\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2F1komma5-principal-software-engineer-mfd"}]}