{"id":725259,"url":"https://alion.io/job/xo-life-full-stack-ai-engineer-all-react-nodejs","title":"Full Stack AI Engineer (all) - React / NodeJS","company":{"id":695298,"name":"XO Life","domain":"xo-life.com","url":"https://alion.io/company/xo-life","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Berlin, Germany"],"countries":["DE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":66000,"max_usd":116000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":62},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Expo","optional":false},{"name":"Express","optional":false},{"name":"GCP","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"Node JS","optional":false},{"name":"React Native","optional":false},{"name":"Redis","optional":false},{"name":"State Management","optional":false},{"name":"styled-components","optional":false},{"name":"TypeScript","optional":false},{"name":"Vite","optional":false},{"name":"Webpack","optional":false},{"name":"WebSockets","optional":false},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2025-12-18T10:28:07Z","employer_posted_date":"2025-12-18","last_verified_at":"2026-11-01T12:38:56Z","board_verified":true,"closed_at":null,"days_open":318,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":317},"description":"Who we are looking for\nWe are seeking a versatile Full Stack AI Engineer to join our engineering team to build end-to-end solutions that power our digital health platform and help the platform to grow. This role involves designing and implementing both client-side and server-side applications, creating seamless user experiences while ensuring robust backend infrastructure.Your mission\nDevelopmentBuild responsive and intuitive mobile first user interfaces using React and React Native\nImplement modern UI/UX designs with attention to accessibility and performance\nIntegrate frontend applications with backend APIs and services \nDesign and implement scalable backend architectures\nOptimize application performance and implement efficient state management\nDevelop cross-platform mobile applications using Expo and React Native\nBuild data processing pipelines and background jobs\nEngineering ToolsAI-assisted development: Ability to effectively use AI tools in daily development work\n\n Database & Data ManagementDesign and optimize database schemas (MongoDB, Redis)\nImplement data migration strategies and ensure data integrity\nMonitor and optimize database performance\nSystem Architecture & IntegrationDesign full-stack architectures that scale from web to mobile\nIntegrate third-party APIs and services\nImplement real-time features using WebSockets\n Infrastructure & DeploymentDeploy and manage applications in cloud environments (AWS, GCP)\nImplement containerization with Docker and Kubernetes\nMonitor system performance and troubleshoot issues across the stack\nEnsure security best practices and compliance\nBuild and maintain CI/CD pipelines\nCollaboration & QualityBe fully responsible for the quality of the produced outcome\nWork closely with product managers, designers, and other engineers\nParticipate in code reviews and maintain code quality standards\nWrite comprehensive technical documentation\nYour background\nEducation & ExperienceBachelor's degree in Computer Science, Software Engineering, or related field OR equivalent work experience with strong technical portfolio\n7+ years of full-stack product development experience\nExperience with growth techniques\nExperience with testing frameworks (unit, integration, end-to-end)\nExperience with performance optimization and monitoring tools\nExperience with mobile-first development and responsive design\n Frontend Technical SkillsJavaScript/TypeScript: Expert-level proficiency in modern JavaScript (ES6+)\nReact: Strong experience with React, hooks, context API, and state management\nCSS/Styling: Proficiency in modern CSS, styled-components, or similar\nBuild Tools: Webpack, Vite, or similar bundling tools\nExpo: Familiarity with Expo framework and development workflow\nReact Native: Experience building cross-platform mobile applications\n Backend Technical SkillsNode.js: Strong server-side JavaScript/TypeScript development\nExpress.js: Experience building RESTful APIs and web services\nDatabases: MongoDB (primary), Redis for caching\nAPI Development: RESTful APIs\nAuthentication: JWT, OAuth, session management\nSoft SkillsStrong problem-solving and analytical abilities\nGood communication and teamwork abilities\nEagerness and passion to work in agile and lean development environments\nDeep product and customer-centric - always advocate for user needs and deliver delightful, impactful experiences\n Preferred QualificationsExperience with healthcare or regulated industry applications\nUnderstanding of accessibility standards\nFamiliarity with design systems and component libraries\nExperience with mobile-specific features (push notifications, offline storage)\nKnowledge of mobile performance optimization\nPlease note that you must have the legal right to live and work in the European Union (EU). Applications from candidates residing outside the EU cannot be considered.Why us?\nTop Tech company in Digital Health: A dynamic, high-growth environment where everyone in the team depends on each other's performance. You can see your impact. We learn and develop quickly.\nTrue impact in healthcare: What we are building with our brite platform is unique worldwide, ambitious, and could have a huge impact on billions of people who are ill or interested in health.\nInternational team: We are 14 nationalities working across Europe. We bring different mentalities and cultures with us, but we are all aligned towards our grand vision. \n100% remote with best IT equipment: We work 100% remotely, meet regularly for special team events and team offsite weeks, for example in Tuscany, the Alps, or Mallorca. You will receive a Mac computer so that you are already technically up to speed. \nHiring Process\nInitial Screening: Technical phone/video introductory and experience call\nLeadership Interview: Discussion focused on leadership principles, values, and cultural fit.\n Technical Deep Dive: Live coding session covering React, Node.js, and database design","description_format":"text","description_chars":4913,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Patient Access & Booking","Pharma Marketing & Medical Communications"],"lifecycle":[{"event":"open","at":"2026-09-11T08:11:59Z"},{"event":"open","at":"2026-09-29T12:03:10Z"},{"event":"open","at":"2026-10-22T14:21:30Z"}],"visa":[],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.221,"p_room":0.28,"age_days":317,"expected_fill_days":30,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/xo-life-full-stack-ai-engineer-all-react-nodejs","json_url":"https://alion.io/job/xo-life-full-stack-ai-engineer-all-react-nodejs.json","meta":{"generated_at":"2026-11-01T17:11:59Z","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":26340,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-02T00:00:00Z"}},"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":695298},"rest":"https://alion.io/mcp/rest/get_company?id=695298"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fxo-life-full-stack-ai-engineer-all-react-nodejs"},{"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%2Fxo-life-full-stack-ai-engineer-all-react-nodejs"},{"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%2Fxo-life-full-stack-ai-engineer-all-react-nodejs"},{"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/xo-life-full-stack-ai-engineer-all-react-nodejs\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fxo-life-full-stack-ai-engineer-all-react-nodejs"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":725259}},{"tool":"search_jobs","arguments":{"company":"xo-life.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":725259},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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