{"id":2578669,"url":"https://alion.io/job/wallround-ai-senior-software-engineer","title":"AI Senior Software Engineer","company":{"id":3874233,"name":"Wallround","domain":"wallround.de","url":"https://alion.io/company/wallround","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Berlin, Germany"],"countries":["DE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":74000,"max_usd":151000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":15},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"Embeddings","optional":false},{"name":"GCP","optional":false},{"name":"Hallucination","optional":false},{"name":"Java","optional":false},{"name":"LangChain","optional":false},{"name":"LlamaIndex","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Multimodal AI","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Tool Use","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-10-14T16:12:56Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-15T23:44:12Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Deine Mission\nAbout Wallround\nWallround is headquartered in Berlin, with additional locations in Hamburg, Frankfurt am Main, Munich, Friedrichshafen and NRW.\nOur mission: we turn energy-efficient retrofits for multi-family residential buildings into predictable, lucrative investment opportunities. When it comes to modernisations, the real estate market is often a black box of rough estimates and fragmented processes. We are changing that. Through our integrated platform and streamlined workflow, we transform 'brown assets' into future-proof, high-yield properties.\nAbout the Role\nDepartment:Prod & TechFunctional Home:AI\nReports to: CPO\nLocation:Germany / Europe\nSeniority:Senior\nWe are looking for AI Senior Software Engineersto design and build the technical foundation behind our AI-powered products.\nYou will be part of the AI Functional Homewhile working primarily within cross-functional product squads. You will collaborate closely with the AI Lead Product Manager, Product Design, Full-Stack and Backend Engineers, and Automation Engineers.\nThis role is ideal for an engineer who enjoys moving between AI experimentation and production software engineering- taking an idea from prototype to reliable, scalable customer-facing functionality.\nKey Responsibilities\nAI Engineering\nDesign and implement production-grade AI features and services.\n\nWork with LLMs, multimodal models, embeddings, RAG, agents, and AI APIs.\n\nDesign AI workflows that are reliable, observable, and maintainable.\n\nEvaluate models and AI approaches against product requirements.\n\nDevelop strategies for accuracy, hallucination reduction, latency, and cost optimization.\n\nProduct Development\nWork directly with the AI Product Manager to turn product requirements into technical solutions.\n\nRapidly prototype new AI capabilities and validate technical feasibility.\n\nTake successful prototypes into production.\n\nContribute to technical product decisions and architecture.\n\nAI Infrastructure & Quality\nBuild evaluation frameworks and testing approaches for AI systems.\n\nImplement monitoring and observability for AI applications.\n\nEstablish appropriate guardrails and fallback mechanisms.\n\nMonitor model performance, latency, availability, and cost.\n\nHelp establish reusable AI infrastructure and engineering patterns.\n\nCross-Functional Squad Execution\nAct as a senior technical contributor within the AI Product Squad.\n\nCollaborate with Product, Design, Backend, Full-Stack, and Automation specialists.\n\nBreak complex AI initiatives into executable technical work.\n\nMentor other engineers and raise engineering standards across the AI Team.\n\nParticipate in architectural and technical decision-making.\n\nDein Profil\nWhat We are Looking For\n6+ years of professional software engineering experience.\n\nSignificant experience building production software using TypeScript and/or Java Python.\n\nHands-on experience building applications with LLMs or other modern AI technologies.\n\nStrong understanding of APIs, distributed systems, databases, and cloud infrastructure(AWS, GCP, or Azure).\n\nExperience taking AI prototypes into production.\n\nStrong software engineering fundamentals: testing, version control, code review, observability, and maintainability.\n\nAbility to operate autonomously in a fast-moving product environment.\n\nExperience with RAG architectures and vector databases.\n\nExperience building AI agents and tool-calling systems.\n\nExperience with model evaluation and AI observability.\n\nExperience with LangChain, LlamaIndex, or equivalent frameworks.\n\nExperience with multimodal AI.\n\nExperience building B2B SaaS products.\n\nSuccess in the First 6-12 Months\nDeliver production-grade AI capabilities.\n\nEstablish reliable AI engineering and evaluation patterns.\n\nImprove the quality, reliability, and cost efficiency of AI features.\n\nBuild reusable AI components that accelerate future squads.\n\nMentor engineers and contribute to the technical direction of the AI Team.\n\nWhat You’ll Own\nAI Architecture → AI Engineering → Production AI Systems → Evaluation → Reliability → Technical Excellence\nWarum wir?\nWhy Join Wallround?\nImpact: Shape the future of energy-efficient retrofits and make a real contribution to climate action.\n\nGrowth: Be part of a fast-growing startup with huge market potential.\n\nTeam & Culture: Work alongside a highly motivated, experienced team in Berlin (Kreuzberg). Enjoy a vibrant startup culture, regular team events, and a modern workplace.\n\nInnovation: Flat hierarchies and fast decision-making-your ideas matter from day one.\n\nFlexibility & Development: Competitive salary, flexible working hours, and tailored personal growth opportunities.\n\nPerks & Benefits: €150 monthly benefit budget-use it for public transit tickets, meal allowances, or lifestyle perks (e.g., Urban Sports Club membership or vendor vouchers).","description_format":"text","description_chars":4831,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Growth opportunities"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Energy Efficiency","Construction"],"lifecycle":[{"event":"open","at":"2026-10-15T00:59:00Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":38,"reasons":["conf:0","win:early"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/wallround-ai-senior-software-engineer","json_url":"https://alion.io/job/wallround-ai-senior-software-engineer.json","meta":{"generated_at":"2026-10-15T23:53:51Z","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":36028,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":3874233},"rest":"https://alion.io/mcp/rest/get_company?id=3874233"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fwallround-ai-senior-software-engineer"},{"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%2Fwallround-ai-senior-software-engineer"},{"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%2Fwallround-ai-senior-software-engineer"},{"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/wallround-ai-senior-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fwallround-ai-senior-software-engineer"}]}