{"id":2088790,"url":"https://alion.io/job/usetoday-senior-fullstack-engineer-ai-backend-infrastructure","title":"Senior Fullstack Engineer: AI, Backend, Infrastructure","company":{"id":2654723,"name":"UseToday","domain":"usetoday.io","url":"https://alion.io/company/usetoday","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_city","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Berlin, Germany"],"countries":["DE"],"hiring_countries":["DE"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":78000,"max_usd":157000,"period":"year","method":"role_seniority_country_cell","sample_n":17},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Azure","optional":false},{"name":"Go","optional":false},{"name":"LangChain","optional":false},{"name":"Langfuse","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Python","optional":false},{"name":"Text-to-Speech","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-10-08T06:00:53Z","employer_posted_date":null,"last_verified_at":"2026-10-08T06:00:53Z","board_verified":false,"closed_at":null,"days_open":4,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":4},"description":"TODAY revolutionizes Financial Advice by making advisors AI-native. Its AI sales operating system supports financial and insurance advisors before, during, and after client meetings, so they save time and give their clients better advice.\n\nIf terms such as Voice AI, workflow automation, real-time analysis, and assistance are what you're passionate about, we want to hear from you.\n\nTasks\n\nArchitect, build, and own core product features across our entire stack, from AI (Voice AI, STT, TTS, Microsoft Foundry, MCP, Deep Agents, LangChain, Langfuse) to Python (optionally Golang and/or TypeScript), Postgres, and Microsoft Azure infrastructure.\n\nDesign and implement scalable microservice architectures on a modern infrastructure stack.\n\nDevelop production-grade AI products, including features driven by LLMs, agents, and advanced audio ML.\n\nIntegrate a wide variety of third-party APIs, MCPs, and data stores to expand our platform's capabilities.\n\nGet hands-on with Voice AI, building systems for audio analysis and processing, VAD, noise cancelation, turn management, and implementing robust evaluation frameworks for evals and agent orchestration.\n\nChampion a security-first mindset, ensuring the highest standards for data, application, and infrastructure security.\n\nEstablish and drive a comprehensive testing culture, from unit testing to contract and penetration testing.\n\nRequirements\n\nYou have a proven track record of building and shipping production-grade AI products, especially in a startup environment.\n\nYou possess rock-solid, hands-on experience in Python (and/or Golang), Postgres (or MySQL), microservices, and modern infrastructure. ReactJS, TypeScript, or Electron is also a big plus.\n\nYou have experience with API/MCP integrations and can quickly get up to speed on new services.\n\nYou have deep, practical experience with building AI Agents, integrating and evaluating LLMs, prompt engineering, and evals.\n\nYou have built scalable, responsive infrastructure under high-traffic and big-data regulatory requirements.\n\nExperience building prod-grade agents for the memory, context, and tooling challenges.\n\nYou are exceptionally driven with a strong entrepreneurial mindset and are excited by the prospect of joining the team at an early stage.\n\nYou are a pragmatic problem-solver who can translate complex requirements into robust, scalable, and secure technical solutions.\n\nPrevious experience in FinTech, InsurTech, or other regulated industries is a plus.\n\nBenefits\n\nJoin our mission to deliver peace of mind at scale. Work with and learn from our Founder team that created over €1.5B in Fintech enterprise value and is driven to aim higher this time. Join an extremely fast-moving AI startup that’s transforming how thousands of customers experience financial advice.\n\nIn addition to a competitive salary, we offer significant equity.\n\nInclude in your application a link, demo, or Loom of a production-grade AI, FinTech, High Traffic- or Big Data-oriented product or solution you’ve shipped.\n\nExplain the architecture, tech choices, and trade-offs you faced, particularly around AI/ML, scalability, reliability or security.\n\nReady to Shape the Future?\n\nJoin us and deliver peace of mind at scale. We’re excited to be working with you.\n\nFind more English Speaking Jobs in Germany on Arbeitnow","description_format":"text","description_chars":3317,"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":["Equity"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Software & Embedded Finance","Financial AI"],"lifecycle":[{"event":"open","at":"2026-10-08T13:35:00Z"}],"visa":[],"liveness":{"score":82,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.824,"p_room":1,"age_days":4,"expected_fill_days":29,"reasons":["seen:4","win:early"],"computed_at":"2026-10-12T06:55:09Z"},"pay":null,"html_url":"https://alion.io/job/usetoday-senior-fullstack-engineer-ai-backend-infrastructure","json_url":"https://alion.io/job/usetoday-senior-fullstack-engineer-ai-backend-infrastructure.json","meta":{"generated_at":"2026-10-12T22:42:47Z","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":37162,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"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":2654723},"rest":"https://alion.io/mcp/rest/get_company?id=2654723"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fusetoday-senior-fullstack-engineer-ai-backend-infrastructure"},{"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%2Fusetoday-senior-fullstack-engineer-ai-backend-infrastructure"},{"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%2Fusetoday-senior-fullstack-engineer-ai-backend-infrastructure"},{"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/usetoday-senior-fullstack-engineer-ai-backend-infrastructure\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fusetoday-senior-fullstack-engineer-ai-backend-infrastructure"}]}