{"id":1308651,"url":"https://alion.io/job/suena-senior-backend-engineer-fmx-api-platform","title":"Senior Backend Engineer (f/m/x) – API & Platform","company":{"id":2194753,"name":"Suena","domain":"suena.energy","url":"https://alion.io/company/suena","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":{"grade":"C","score":56,"open_postings":11,"ghost_share":0.727,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-01T05:45:00Z"}},"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":["Hamburg, Germany"],"countries":["DE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":76000,"max_usd":136000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":57},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Celery","optional":false},{"name":"CI/CD","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Redis","optional":false},{"name":"TimescaleDB","optional":false},{"name":"GitLab CI","optional":true},{"name":"Grafana","optional":true}],"status":"live","first_seen_at":"2026-06-18T10:38:45Z","employer_posted_date":"2026-06-18","last_verified_at":"2026-10-01T12:45:43Z","board_verified":true,"closed_at":null,"days_open":105,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":104},"description":"Intro\nHamburg Hybrid (2-3 days/week onsite) | 70.000 - 85.000 € p.a. (40 hrs / full time) | 30 Days Vacation | English B2 | German C1Are you passionate about building the technical backbone of the energy transition? Join suena energy as Senior Backend Engineer (f/m/x) and become a founding member of our newly formed Platform team. You'll help design and build the API and integration layer that connects our trading, analytics, and optimization systems - and in doing so, directly shape how clean energy is managed across European power markets.\nsuena energy is a green tech startup specializing in algorithmic energy trading for battery storage systems and renewables.\nOur vision: a world where clean energy is used reliably, economically, and intelligently. With our AI-based optimization and trading software, we maximize the revenues of operators of large-scale energy storage and renewable assets on short-term electricity and balancing markets - while simultaneously minimizing their risks.\nWe're a team of 50+ people, combining a warm, supportive culture with real startup drive. Following our successful Series A, we're now building a dedicated Platform team from scratch.\nQuick Check: Is this your kind of engineering challenge?\n Tech Stack: Python (Django/FastAPI), PostgreSQL/TimescaleDB, Redis, Celery, Docker, AWS, GitLab CI/CD, Sentry, Grafana\nYour Focus: API design & architecture, backend integrations, data flows, system reliability and scalability\nTeam: Small, newly formed platform squad - you'll work closely with the Platform Lead, with strong support from our CTO in the early phase\nProduct: Real-time energy trading platform - high complexity, data-heavy, ML-integrated\nWho thrives here: Engineers who think in systems, take ownership, and are energized by building things that actually matter\nMust-haves: 5+ years backend experience, solid API & architecture background, Python, cloud deployment, German C1\n Dealbreakers: No API/architecture experience, pure CRUD background, no interest in complex distributed systems\nYour mission\nDesign and build scalable, reliable APIs and backend integrations that connect trading, analytics, data science, and forecasting systems\nDrive the architecture of suena's platform layer - from initial design decisions to production\nOwn data flows and backend automations across the platform\nCollaborate closely with the Platform Lead, CTO, and cross-functional teams (trading, data science, modelling) to translate complex domain requirements into robust technical solutions\nImprove and extend existing systems while keeping a clear eye on reliability, security, and performance\nContribute to technical standards, code reviews, and engineering practices as the team grows\nYour profile\n5+ years of backend engineering experience, with a strong focus on API design and system architecture\nSolid Python skills (Django and/or FastAPI); hands-on experience with PostgreSQL/TimescaleDB is a plus\nExperience with distributed/cloud-based architectures (AWS preferred), Docker, CI/CD, async workflows (Celery, Redis)\nYou think beyond the ticket - you understand how systems connect and can make principled architecture decisions\nSecurity-minded: authentication, authorization, zero-downtime deployments are familiar territory\nComfortable working across greenfield projects and legacy systems\n German C1 is required for this role - we work closely with German-speaking external API partners and system integrators, and clear, direct communication in German is essential for this\nEnglish B2/C1 for internal collaboration\nNice to have:Experience or genuine curiosity about energy markets, trading systems, or related domains (finance, IoT). The domain is complex - enthusiasm to learn it matters.\nWhy us?\nShape the Future: Contribute to the energy transition by working on sustainable energy solutions in a growing market environment.\nConnecting & Co-Creating: Strategy off-sites and onsite weeks for real collaboration and shared ideas.\nWork Your Way: Home office and flexible hours - you know what works best for you and your team.\nTeam Spirit: Yoga, shared lunches, after-work fun - we support each other and keep the vibe strong, even when it’s busy.\nFair & Transparent: Clear structures, democratic decisions, and a feedback culture where your voice counts.\nBody & Mind: Urban Sports Club membership, wellbeing check-ins, and mental health support - your energy matters.\nNew Office Vibes: 10th-floor office with rooftop terrace, canteen, great views, ergonomic desks, hardware of your choice, and pet-friendly!\nSustainable Extras: Deutschlandticket, FutureBens, and more - supporting your mobility and future.\nWhat else?\nA note on applicationsAs part of your application, we'd love to see a Python project you're genuinely proud of - production code, a side project, a study case, anything goes. It doesn't need to be polished. We'll use it as the basis for a technical conversation: what decisions did you make, why, what would you do differently? Send us the link of your repository. Be sure we have access.\nIf you don't have something ready to share, no problem - we'll send you a small, focused task instead.\nNot quite senior level yet, but this role sounds like the direction you're heading? Apply anyway and let us know - we're also building out the junior side of the team.\nWe look forward to receiving your application, earliest start is as soon as possible. If you have any questions, feel free to reach out - your contact is Aytac (Interim Talent Partner).\nYou’ll hear back from us within 5 working days of your application. We value your time and want to make the process as transparent as possible. Once we receive your application, we’ll send you a confirmation email outlining the next steps and what you can expect from our interview process.\nWe can’t wait to meet you!\nsuena energy is an equal opportunity employer. We celebrate diversity and reject any form of discrimination. It is important to us to create an inclusive environment for all our team members. We want to particularly emphasize that our call for applicants is addressed to all genders. We welcome applications from people with disabilities.","description_format":"text","description_chars":6174,"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":"Upper-Intermediate (B2)","optional":false}]},"benefits":["Home office"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Energy & Utilities","Business Development"],"lifecycle":[{"event":"open","at":"2026-09-26T15:15:09Z"}],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.289,"p_room":0.28,"age_days":104,"expected_fill_days":42,"reasons":["conf:9","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-01T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/suena-senior-backend-engineer-fmx-api-platform","json_url":"https://alion.io/job/suena-senior-backend-engineer-fmx-api-platform.json","meta":{"generated_at":"2026-10-01T20:38:01Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":3041,"day_limit":5000,"remaining_today":1959,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}