{"id":3466437,"url":"https://alion.io/job/svist-junior-front-end-engineer-react-native-expo","title":"Junior Front-End Engineer (React Native Expo)","company":{"id":4486827,"name":"Svist","domain":"svist.sk","url":"https://alion.io/company/svist","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Mobile","role_family":"Mobile","seniority":"junior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Ukraine"],"countries":["UA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Deep Linking","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"Expo","optional":false},{"name":"FastAPI","optional":false},{"name":"Firebase","optional":false},{"name":"Flask","optional":false},{"name":"GCP","optional":false},{"name":"GraphQL","optional":false},{"name":"Kubernetes","optional":false},{"name":"Offline-First","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"React Native","optional":false},{"name":"Redis","optional":false},{"name":"Redux","optional":false},{"name":"Rest API","optional":false},{"name":"Socket.IO","optional":false},{"name":"State Management","optional":false},{"name":"styled-components","optional":false},{"name":"TypeScript","optional":false},{"name":"WebSockets","optional":false},{"name":"Zustand","optional":false},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-10-12T12:59:24Z","employer_posted_date":null,"last_verified_at":"2026-10-12T12:59:24Z","board_verified":false,"closed_at":null,"days_open":22,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":22},"description":"We’re looking for a Junior Front-End Engineer (with React Native Expo experience) to join our team. \n\nWork Location: Poland (Krakow), Slovakia (Kosice) or Czechia (Prague). \n\nHybrid: 2+ days per week in the office, the rest remote.\n\nThe Mission\n\nWe are building a complex, real-time ecosystem for micromobility and logistics systems sim—where split-second logistics meet seamless user experiences. We need a Junior Front-End to work on the development of our Customer Mobile Web App and our high-utility Internal Admin Panels.\n\nYou’ll be the bridge between the sleek, high-performance interface our users see and the robust, scalable Python services that power the logic.\n\nMobile-First Frontend: Architect and scale our React-based mobile web application, ensuring 60fps performance and offline-first capabilities.\n\nOperational Control Centers: Build dense, data-heavy Admin Panels that allow our operations team to monitor real-time logistics, manage users, and handle complex dispatching.\n\nScalable Backend: Design and maintain performant APIs using Python (FastAPI/Django) to handle high-concurrency event streams.\n\nEnd-to-End Ownership: From database schema design to CSS transitions, you’ll own the entire feature lifecycle.\n\nWho You Are\n\nThe Architect: You don't just \"write code\"; you design systems. You understand how a change in a Python microservice ripples out to the React frontend.\n\nUX Enthusiast: You understand that an Admin Panel requires different UX \"muscle\" (efficiency and density) than a mobile app (simplicity and speed).\n\nProblem Solver: You’ve dealt with the \"hard stuff\"—real-time GPS tracking, race conditions in booking logic, or complex state management.\n\nPragmatist: You balance the need for clean, tested code with the reality of shipping features in a fast-paced environment.\n\nWill be a plus Led transformation of standalone product into scalable SaaS platform.\n\nWhy Join Us?\n\nWork on a product with immediate, real-world impact.\n\nA \"no-red-tape\" environment where your architectural decisions stick.\n\nLayer Technology\n\nFrontend - React Native Expo, Styled Components, Mobx/Redux, WebSockets. Experience with Firebase, Expo SDK, Expo Modules.\n\nBackend - Python (FastAPI / Django / Flask)\n\nDatabase - PostgreSQL, Redis (for real-time caching)\n\nInfrastructure - AWS/GCP, Docker, Kubernetes\n\nReal-time - WebSockets / Socket.io (for \"Uber-style\" live tracking)\n\nRequirements & Skills - Senior Front-End Engineer\n\nWhat We’re Looking For:\n\nCommercial experience with React Native (Expo)\n\nAdvanced proficiency in React Native Expo.\n\nExpert-level TypeScript experience with advanced types and strict configurations;\n\nDeep knowledge of React 18+ fundamentals: hooks, context, memoization, rendering performance.\n\nStrong knowledge of state management tools (Redux, MobX, Zustand, etc.);\n\nExperience building map-based UI: react-native-maps / MapView, markers, polylines/routes, camera control, clustering.\n\nStrong UI implementation skills: different screen sizes, accessibility basics.\n\nHands-on experience with GPS / background location tracking\n\nExpertise in navigation: React Navigation (deep linking, nested navigators, modal flows).\n\nAPI integration: REST/GraphQL consumption, request caching, pagination, retries, error handling.\n\nHandling auth flows (JWT/OAuth), token refresh, secure storage patterns (Keychain/Keystore concepts).\n\nCore responsibilities: \n\nFull end-to-end ownership of the mobile app (iOS & Android)\n\nApp maintenance, releases, production stability & incident handling\n\nGPS / geolocation + live tracking\n\nREST API + real-time event integration\n\nPerformance, reliability, and architecture improvements\n\nAbility to understand business requirements and translate them into technical requirements.\n\nRequired Skills\n\nReact Native Expo, Styled Components, Mobx/Redux, WebSockets. \n\nExperience with Firebase.\n\nExpo SDK 52+, Expo Modules\n\nLanguage Skills\n\nEnglish: Upper intermediate (B2)\n\nWe offer:\n\nChallenging and rewarding tasks with autonomy in a distributed international team\n\nMotivated colleagues who foster a collaborative environment\n\nCompetitive salary based on your experience and expertise\n\n20 vacation days + state holidays + your birthday off (for full-time employees)\n\nSick leave coverage (5 days for full-time employees)\n\nOpportunities for regular business trips abroad","description_format":"text","description_chars":4325,"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":[],"hiring_locations":[{"name":"Czech Republic","iso":"CZ","kind":"country"},{"name":"Poland","iso":"PL","kind":"country"},{"name":"Slovakia","iso":"SK","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Exhibitions"],"lifecycle":[{"event":"open","at":"2026-10-29T15:24:45Z"}],"visa":[],"liveness":{"score":50,"band":"ok","label":"Likely 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