Jobs React Native

Welcome to Drawer.AI!

- What we do: AI-driven workflows that let estimators pull quantities and costs from complex PDF drawing sets.  
- Stage: Seed-funded, revenue-generating, aiming for a Series A in 2026.  
- Why join now: Real customers are pushing our roadmap faster than our current front-end team can build.

As a Lead Frontend Engineer at Drawer.AI, you will lead the frontend development of our AI-powered platform for the Architecture, Engineering, and Construction (AEC) industry. You’ll drive frontend architecture, mentor engineers, and work closely with Product, Design, AI, and Backend teams to build fast, scalable, and highly interactive web applications.

Key Responsibilities:

• Lead frontend architecture and technical decision-making.
• Design, build, and maintain complex React applications.
• Drive performance optimization and scalability across the frontend.
• Mentor frontend engineers through code reviews and technical guidance.
• Collaborate closely with Product, AI, Backend, and Design teams.
• Establish frontend best practices and engineering standards.
• Own technical delivery from architecture to production.
   

Requirements:

• 8+ years of frontend development experience.
• 7+ years of hands-on React experience.
• 3+ years of experience leading frontend teams or acting as a Tech Lead.
• Strong expertise in JavaScript and TypeScript.
• Deep understanding of modern frontend architecture and state management.
• Experience building complex, data-heavy, or highly interactive web applications.
• Strong experience with performance optimization and browser rendering.
• Excellent problem-solving, communication, and mentoring skills.
• Ability to make architectural decisions and drive technical direction.

Nice to have:

• Experience with WebGL, Three.js, or React Three Fiber.
• Experience building engineering or visualization products.
• Experience with Canvas, SVG, or real-time rendering.
• Experience working in B2B SaaS startups.
• Experience with AI-powered products or developer tools.

Join our stellar team at Drawer.AI, where excellence meets opportunity! Experience the exceptional; enjoy a competitive salary and career advancement and the outstanding work environment we take pride in. Elevate your professional journey with us – because we believe in creating success together. Build a better future with us!

We’re seeking a Senior Mobile Software Engineer (React Native) to building and scaling mobile applications for a Retail Brokerage business. If you enjoy working on production-ready mobile apps and want to make a real impact on high-traffic financial platforms — we’d love to hear from you.
 

Core Competence:
 

• Proven senior-level experience in React Native development for commercial mobile applications.
• Strong knowledge of TypeScript and modern JavaScript (ES6+).
• Hands-on experience with Redux for state management and RxJS for reactive programming.
• Solid understanding of mobile app architecture, performance optimization, and best practices.
• Experience setting up and delivering mobile applications from scratch to production.
• Ability to collaborate closely with a web-focused team and integrate mobile solutions with existing BSG sites.
• Strong problem-solving skills and a proactive, ownership-driven mindset.
   

Preferred Qualifications:
 

• Experience working in FinTech / Retail Brokerage or other high-reliability domains.
• Familiarity with CI/CD pipelines for mobile applications.
• Experience working in cross-functional teams (design, backend, product).
• Upper-intermediate or higher level of English for effective communication in an international environment.
   

What We Offer You:
 

• Impactful Product: Direct involvement in building a mobile app for BSG brokerage platforms used by real customers.
• Professional Team: Collaboration with an experienced Web team in a structured corporate environment.
• Flexible Setup: Contract-based cooperation with a clear scope and timeline.

About the role

We’re excited to offer a long-term opportunity for a technically curious Integration Engineer (Mobile & IoT) to join a team of professional engineers and designers. Together, you’ll be working on a US-based product that’s making a significant impact on the PropTech market.

This role offers the opportunity to work at the intersection of mobile applications, connected devices, and real-world integrations — collaborating closely with experienced developers and contributing to a growing and innovative platform.

About ElevateOS

ElevateOS has been improving the resident experience for over seven years. We created a single, all-in-one platform that makes it easy for property managers and resident staff to work together. Our goal is simple: to provide the best experience for residents by replacing multiple, confusing apps with one intuitive solution.

This is a stable, long-term product that continues to grow, and you'll have the opportunity to contribute to its ongoing success.

Our primary technology stack revolves around JavaScript. We use:

• React for the front-end,
• Node.js for the back-end,
• React Native for mobile development.

The platform also integrates with connected devices and smart property technologies, making this role especially interesting for candidates interested in mobile ecosystems, IoT, and hardware/software interactions.

What will your responsibilities include?

• Configure, test, and troubleshoot smart devices and connected hardware systems;
• Support testing and validation of mobile applications and SDK integrations across Android and iOS platforms;
• Support reproducing and investigating software/hardware integration issues;
• Work with physical devices in a lab/test environment;
• Analyze requirements and help validate technical flows and integrations;
• Create and maintain technical and testing documentation;
• Collaborating closely with developers to identify and resolve issues;
• Support exploratory, integration, and API testing activities;
• Support maintaining stable testing and device environments.

Requirements

• Some commercial experience in software engineering, mobile development, QA, technical support, or a related technical role;
• Understanding of mobile technologies and development concepts;
• Hands-on experience with React Native
  Familiarity with at least some of the following:
  • SDK integrations,
  • Kotlin,
  • Swift;
• Interest in IoT systems, smart devices, or hardware/software integrations;
• Comfort working with physical devices and technical documentation;
• Strong analytical and troubleshooting skills;
• Engineering mindset with curiosity about how systems work together;
• Good English communication skills.

Additional (good-to-have) skills

• Experience with Automated testing;
• Experience with CI/CD (CircleCI, GitHub Actions);
• Basic hands-on experience with hardware setup and configuration (smart home devices, IoT systems, or similar);
• Familiarity with keyless entry systems, smart locks, thermostats, or other connected devices;
• Comfort working with physical devices in a test environment — setting up, configuring, and troubleshooting hardware based on technical documentation;
• Experience with API testing;
• Basic understanding of mobile logs and debugging tools.

Ukraine-based role

Stormotion is a React Native-focused agency. We build mobile products in IoT/BLE, EV & Mobility, Fitness, and HealthTech/Mental Wellbeing. Small teams, direct client communication.

Growth path
Start as a React Native developer. Over time you can add React (web) and grow to Full Stack with Hasura + PostgreSQL + Nest.js.

What you’ll do

• Build and ship React Native apps (TypeScript)
• Turn product goals into working solutions (not just “implement tickets”)
• Keep releases stable - test key flows in real conditions
• Make scope/architecture decisions that won’t block future scaling
• Code reviews, mentoring, workshops (everyone teaches, everyone learns)
• Join client calls: clarify requirements, explain trade-offs, drive discussions
   

Must have

• 1+ year commercial React Native experience
• Strong TypeScript
• Hooks + Context
• State management (Redux / MobX or similar)
• API integration (fetch / axios or similar)
• Spoken English Intermediate+: confident on calls, not only in chat
• Tech education (Computer Science, IT, Cybersecurity, etc)
   

Nice to have

• GraphQL (Apollo Client / Relay / urql)
• Push notifications
• Firebase (Cloud Messaging, Analytics, Firestore, Storage, Authentication, Functions)
• React Navigation
• ESLint / Prettier
• Testing (TDD / Jest / Detox)
• CI/CD (Fastlane / GitLab CI/CD / GitHub Actions)
• Reanimated 3 / React Native Skia
• BLE integrations (react-native-ble-plx or similar)
• Ramda / Lodash / fp-ts or other FP libraries
   

Benefits

• 24 paid vacation days + 10 paid recharge days
• Birthday day-off + Donor day-off
• Remote-first, office option in Dnipro
• Professional study compensation (courses/meetups/webinars)
• Sport & Streamings budgets
• Assistance with taxation PE documentation

About CreditBooster.ai

CreditBooster.ai helps Americans improve and monitor their credit scores. We are an AI-native fintech product with paying users, available on the App Store, and supported by a small remote team across the US and Europe.

About the Role

We are transitioning from React Native to fully native development: Swift/SwiftUI for iOS and Kotlin/Jetpack Compose for Android. We are looking for a Senior Mobile Engineer who will take ownership of both platforms and lead the migration effort.

We actively use AI tools (Claude Code, AI agents, Figma-to-Code), so this role is designed for an engineer who knows how to scale their productivity with AI.

What You'll Do

• Develop and maintain native iOS and Android applications.
• Lead the migration from React Native to SwiftUI and Jetpack Compose.
• Build paywalls, subscriptions, and monetization features using RevenueCat, StoreKit 2, and Google Play Billing.
• Develop AI-powered features, including chat, response streaming, and LLM integrations.
• Improve application performance, stability, and overall user experience.
• Manage App Store and Google Play releases.
• Leverage AI agents to accelerate development and maintain two codebases efficiently.

Our Ideal Candidate

• Has 5+ years of experience in mobile development.
• Is confident working with Swift/SwiftUI and Kotlin/Jetpack Compose.
• Has published apps in both the App Store and Google Play.
• Uses AI tools as part of their daily development workflow.
• Has experience with subscriptions, payment systems, and monetization.

• Has English proficiency at a B2 level or higher.

   

Nice to Have

• React Native / Expo.
• RevenueCat.
• Kotlin Multiplatform.
• Experience with fintech or SaaS products.

• Experience building custom AI agents, Claude Code Skills, or MCP servers.

   

Interview Process

Stage 1: HR Interview

Stage 2: A 30-minute online interview where we'll ask you to demonstrate your AI workflow in practice.

About CreditBooster.ai

CreditBooster.ai's mission is to help every American understand, build, and own their credit. We're an AI-native credit improvement platform, live on the App Store, with paying customers and a small remote team across the US and Europe. We work across product, engineering, and design to bring AI-native finance to a category that legacy credit tools have underserved for decades.

Tech Stack: React Native, Expo, Swift & Kotlin, Node.js/Express, Postgres, AWS...

About you

You’re an expert software engineer with outstanding attention to UI/UX. When you need to ship backend features, you don’t need someone else to step in. We don’t expect a backend ninja, but simple CRUD shouldn’t intimidate you.

The definition of "expert" varies, so let’s narrow ours down:

• Elite communication: You set expectations accurately and you live up to them. No surprises. Our team works in Russian & English*
• Deep resilience: Bugs, crises, or tough discussions - you have a massive buffer before stress impacts your output. You don't crack under pressure.
• No ego: We are here to win, not to manage insecurities.
• Product mastery: You understand the engineering principles behind the greatest software products ever made. Be ready to discuss under the hood of your tools.

Engineering culture

• Optional code reviews: We trust you. Merge when you're ready. If you want a second pair of eyes, just ask.
• Radical autonomy: We don’t second-guess your decisions. You own the call.
• High-bandwidth collaboration: We talk constantly, so everyone has context without needing formal gates to catch up.
• Direct feedback: When we do review code, comments are blunt, concise, and respectful.
• Ruthless efficiency: We aggressively adopt any tool (AI included) that increases leverage and speed.
• Limited test coverage on FE: We supplement that with good architecture and top talent.
   

About the role

• This is the second seat on our mobile team. Today, one engineer owns our entire mobile codebase end-to-end: live on iOS & Android, paying customers, real subscription revenue.
• You'll partner closely with our founder, our PM, our backend engineer, and our designer. 
• AI is woven through the product itself, not just our build process: features that take real action on the user's behalf, conversational interfaces, LLM-driven recommendations. That means staying close to the models, prototyping fast, and being comfortable shipping into surfaces where the underlying capability is still moving.
• We care deeply about craft, the details that make the product feel polished and trustworthy on a 60fps thread. But we ship fast and learn in the open. We'd rather get a paywall variant in front of users this week than perfect it for a month.
• This role is fully remote with morning Chicago overlap (10am–2pm CT) for standups and demos.

Benefits

1. You’ll learn a lot: Steep learning happens outside of your comfort zone. If you’re eager to learn, it means you’re hungry for uncertainty and discomfort. We only hire people like that. We promise to push you out of your comfort zone and give you access to extract as much knowledge as possible from the environment we’ve created.
2. You’ll get rich: A startup environment often feels like eating glass. And if someone decides to eat glass with us, they deserve their slice of the pie. That’s why besides equity, we also have profit share for core team members as part of our compensation package.
3. Earning your first $1M means enduring $1M worth of pain, but if you’re up for it, we’re here for you. We don’t hire people that aren’t obsessive, so the main question shifts from if to when .
4. You’ll own your slice of the pie: You’ve probably heard stories from corporates about "extreme ownership" that turned out to be capped by a manager. We don’t have managers, you are the one responsible. You’ll have the entire team’s trust.
5. The only limit is business reality: we want to earn money, not just be around.
6. You’ll have our back: Our recruitment philosophy is similar to the Navy Seal’s one. We have a culture where entrepreneurs can thrive. We know exactly what “tough” really means, so we watch each other's backs.

It should feel like a steal

You’ll join a team of experienced builders to create the next massive success. In your first six months, you’ll learn more - while getting paid - than you have in the last few years combined. You will be trusted, respected, and heard. If it doesn’t feel like a steal for you, it’s probably not be what you’re looking for at the moment.

  Hi! We are looking for a Senior React Native Developer to join our pack at SharksCode 🦈💙
SharksCode is a Ukrainian IT company that develops high-tech software solutions and B2B platforms, particularly in the iGaming industry.
We are looking for a Senior React Native Developer who will take a key role in building and evolving our mobile products. In this position, you will be responsible for designing scalable mobile architectures, developing new features, optimizing application performance, and driving technical excellence across the team.

We expect that you:
– Have a higher technical education in Computer Science, Software Engineering, or a related field.
– Have 5+ years of commercial software development experience, including at least 3 years with React Native.
– Have strong proficiency in React, React Native, and TypeScript.
– Have hands-on experience with WebSocket, Zustand, Reanimated, FlatList, and LegendList.
– Confidently use AI tools for development, code review, and requirements analysis.
– Have a deep understanding of mobile application architecture and scalable solution design.
– Have practical experience optimizing the performance of React Native applications.
– Understand the mobile application lifecycle and platform-specific features of iOS and Android.
– Have experience working with REST APIs and third-party service integrations.
– Have experience conducting code reviews and mentoring developers.
– Possess strong communication skills and can collaborate effectively with cross-functional teams.
– Have excellent analytical thinking, system design skills, and attention to detail.

Your future responsibilities:
– Develop new functionality and maintain existing features of mobile applications.
– Design and evolve architectural solutions for mobile products.
– Write high-quality, maintainable, and high-performance code following internal engineering standards.
– Optimize application performance and improve user experience.
– Analyze and resolve complex technical issues and system bottlenecks.
– Conduct code reviews and ensure high code quality standards within the team.
– Participate in planning, estimation, and technical solution design.
– Mentor developers and promote engineering best practices.
– Initiate and implement technical improvements aimed at increasing product stability, performance, and scalability.

Nice to have:
– Experience in the iGaming domain.
– Proven experience optimizing high-load mobile applications.
– Experience developing Native Modules for iOS and Android.
– Strong understanding of animations and implementation of complex UI/UX solutions.
– Experience with Firebase, App Center, Sentry, or similar platforms.
– Experience working with high-load systems and real-time functionality.
– Strong ownership mindset, proactivity, and ability to make technical decisions independently.

Interview stages:
🤝 Interview with Recruiter.
🧠 Technical Interview.
💙 Offer.

We offer:
🌴 24 paid vacation days, 14 sick days, and 5 days off.
⏰ Flexible start of the working day — from 9:00 to 11:00.
🏥 Medical insurance.
💰 Bonuses and performance-based rewards.
🐶 Office in the center of Kyiv — pets are welcome, we are pet-friendly.
💆 Lounge area in the office to recharge during the day.
🎾 Padel tennis, football, and training at the polygon for those who enjoy active leisure.
📚 Learning compensation, internal meetups and workshops, as well as access to the corporate LMS with courses.
🎁 Corporate currency that can be exchanged for merch, gifts, or additional benefits.

Location: Remote
 

About the Role

We are looking for an experienced React Native Developer to join our team and help build high-quality mobile applications. The ideal candidate has strong expertise in modern React Native development, including the New Architecture, and is passionate about delivering scalable, performant, and user-focused mobile experiences.
 

You will work in a remote-first environment, collaborating closely with product, design, and engineering teams to deliver features quickly while maintaining high standards of code quality and reliability.
 

Requirements

Experience & Expertise

• Proven experience with React Native for mobile app development, including the New Architecture (Fabric, JSI, TurboModules).
• Strong portfolio demonstrating development of complex, large-scale apps.
• In-depth understanding of client-server architectures with RESTful APIs.
• Experience with Expo and the managed/bare workflow ecosystem.
• Familiarity with multimedia processing (audio/video handling) is a plus.
   

Technical Skills

• Proficient in TypeScript and modern front-end technologies.
• Experience with state management (Redux Toolkit, Zustand, or similar) and navigation frameworks (React Navigation, Expo Router).
• Knowledge of native module integration and performance optimization, including profiling with Hermes and identifying render bottlenecks.
• Performs meaningful unit and integration tests. Experience with Jest and React Native Testing Library is a plus.
   

AI-Assisted Development

• Actively uses AI coding tools (e.g., Cursor, Claude) to accelerate development.
• Critically reviews and tests AI-generated code before committing.

Delivery Speed

• Demonstrates a bias toward shipping: breaks work into small, reviewable increments and moves features from spec to working code quickly.
• Comfortable making pragmatic tradeoffs; knows when “good enough now” beats “perfect later.”

Communication & Collaboration

• Strong written English; comfortable in async, remote-first environments.
• Proactively surfaces blockers: communicates problems clearly and early, proposes solutions or asks a specific question. Never goes silent on a problem for hours.
• Experience in agile environments; comfortable with short feedback loops and scope changes.

Additional Attributes

• Problem-solving mindset with attention to detail and code quality.
• Self-directed and organized; manages priorities without needing close supervision.
• Proficient with Git, including branching strategies and code review practices.

About the Project

We're building an enterprise IoT platform that transforms connected devices such as coffee machines, refrigerators, and similar hardware into secure, self-service stations with access control and usage tracking.

As part of the mobile team, you'll develop and maintain two white-label applications used by end users and operators. The mobile layer is built with React Native and Expo, consuming strongly typed backend APIs delivered by the platform team.

The project follows an AI-assisted development approach, supported by a well-defined architecture and engineering standards. You'll work closely with an experienced software architect who oversees the overall system design and code quality. This is a dedicated mobile development role with no backend responsibilities and no direct client communication.

Technology Stack

Mobile

• React Native
• Expo (mandatory)
• TypeScript
• NativeWind
• Tailwind CSS

State Management & Data

• TanStack Query

Testing

• Detox
• Maestro

Development Tools

• Claude Code
• Codex
• GitHub
• Linear
• CodeRabbit

CI/CD & Distribution

• EAS Build
• EAS Submit
• OTA Updates
• App Store & Google Play release pipelines

Responsibilities

• Develop and maintain consumer and operator mobile applications within a shared React Native codebase
• Implement features such as QR/NFC-based access, transaction history, notifications, device monitoring, restocking workflows, issue reporting, and device onboarding
• Build and maintain a scalable white-label architecture supporting multiple brands through configuration-driven theming and feature management
• Integrate with typed backend APIs and ensure robust handling of authentication, loading states, errors, offline scenarios, and synchronization
• Manage the complete mobile release lifecycle, including builds, store submissions, OTA updates, signing certificates, and deployment processes
• Create accessible, responsive, and RTL-compatible user interfaces that meet modern usability standards
• Develop and maintain automated tests, including component, integration, and end-to-end test coverage
• Leverage AI-powered development tools effectively while maintaining strong engineering judgment and ownership of delivered code
• Participate in daily asynchronous communication and weekly project review sessions

Requirements

• 3+ years of professional experience building and shipping React Native applications
• Proven experience with the Expo ecosystem, including EAS Build, EAS Submit, OTA updates, and mobile release management
• At least one production application published on the App Store and/or Google Play (portfolio, store link, or demo required)
• Strong TypeScript and modern React skills, including hooks, component composition, and scalable state management patterns
• Hands-on experience with NativeWind and Tailwind CSS
• Experience building reusable UI components and working with design systems
• Experience implementing white-label or multi-tenant mobile applications is highly desirable
• Solid understanding of mobile API integration patterns, authentication flows, caching, retries, and offline-first considerations
• Experience using AI-assisted coding tools such as Claude Code, Codex, Cursor, or similar solutions in a professional workflow
• Strong written and verbal English communication skills
• Ability to work independently in a remote-first environment

Nice to Have

• Experience with React web applications and the TanStack ecosystem
• Push notification implementation using Expo Notifications, FCM, and APNs
• Experience building custom native modules or Expo config plugins
• Familiarity with Reanimated and Gesture Handler for advanced mobile interactions
• Previous experience delivering white-label, multi-brand, or enterprise mobile products
• Experience working in IoT, connected-device, or hardware-integrated environments

We’re looking for a Front-End Engineer to join our team. 

Work Location: Poland (Krakow), Slovakia (Kosice) or Czechia (Prague). 

Hybrid: 2+ days per week in the office, the rest remote.

The Mission

We are building a complex, real-time ecosystem for micromobility and logistics systems sim—where split-second logistics meet seamless user experiences. We need a Front-End powerhouse to lead the development of our Customer Mobile Web App and our high-utility Internal Admin Panels.

You’ll be the bridge between the sleek, high-performance interface our users see and the robust, scalable Python services that power the logic.

• Mobile-First Frontend: Architect and scale our React-based mobile web application, ensuring 60fps performance and offline-first capabilities.
• Operational Control Centers: Build dense, data-heavy Admin Panels that allow our operations team to monitor real-time logistics, manage users, and handle complex dispatching.
• Scalable Backend: Design and maintain performant APIs using Python (FastAPI/Django) to handle high-concurrency event streams.
• End-to-End Ownership: From database schema design to CSS transitions, you’ll own the entire feature lifecycle.

Who You Are

• The 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.
• UX Enthusiast: You understand that an Admin Panel requires different UX "muscle" (efficiency and density) than a mobile app (simplicity and speed).
• Problem Solver: You’ve dealt with the "hard stuff"—real-time GPS tracking, race conditions in booking logic, or complex state management.
• Pragmatist: You balance the need for clean, tested code with the reality of shipping features in a fast-paced environment.

Will be a plus Led transformation of standalone product into scalable SaaS platform.

Why Join Us?

Work on a product with immediate, real-world impact.

A "no-red-tape" environment where your architectural decisions stick.

Layer Technology

Frontend - React Native Expo, Styled Components, Mobx/Redux, WebSockets. Experience with Firebase, Expo SDK, Expo Modules.

Backend - Python (FastAPI / Django / Flask)

Database - PostgreSQL, Redis (for real-time caching)

Infrastructure - AWS/GCP, Docker, Kubernetes

Real-time - WebSockets / Socket.io (for "Uber-style" live tracking)

Requirements & Skills - Senior Front-End Engineer

What We’re Looking For:

• 3+ years of commercial experience with React Native (Expo)
• Advanced proficiency in React Native Expo.
• Expert-level TypeScript experience with advanced types and strict configurations;
• Deep knowledge of React 18+ fundamentals: hooks, context, memoization, rendering performance.
• Strong knowledge of state management tools (Redux, MobX, Zustand, etc.);
• Experience building map-based UI: react-native-maps / MapView, markers, polylines/routes, camera control, clustering.
• Strong UI implementation skills: different screen sizes, accessibility basics.
• Hands-on experience with GPS / background location tracking
• Expertise in navigation: React Navigation (deep linking, nested navigators, modal flows).
• API integration: REST/GraphQL consumption, request caching, pagination, retries, error handling.
• Handling auth flows (JWT/OAuth), token refresh, secure storage patterns (Keychain/Keystore concepts).
   

Core responsibilities: 

• Full end-to-end ownership of the mobile app (iOS & Android)
• App maintenance, releases, production stability & incident handling
• GPS / geolocation + live tracking
• REST API + real-time event integration
• Performance, reliability, and architecture improvements
• Ability to understand business requirements and translate them into technical requirements.

Required Skills

• React Native Expo, Styled Components, Mobx/Redux, WebSockets. 
• Experience with Firebase.
• Expo SDK 52+, Expo Modules

Language Skills

English: Upper intermediate (B2)

We offer:

• Challenging and rewarding tasks with autonomy in a distributed international team
• Motivated colleagues who foster a collaborative environment
• Competitive salary based on your experience and expertise
• 20 vacation days + state holidays + your birthday off (for full-time employees)
• Sick leave coverage (5 days for full-time employees)
• Opportunities for regular business trips abroad

Job Description

Role Overview:
 

The Senior Full-Stack Developer position at Vertical Television involves acting as a technical pillar and the ultimate “go-to” person within the app development team. The role demands a highly independent professional with a strong frontend orientation, responsible for driving the architecture of a high-scale mobile app and operational web platforms. The developer will contribute to building the future of Vertical Television by combining cinematic storytelling with interactive, vertical-first technology, focusing on scalable application design and performance optimization.

Key Responsibilities:

• System & App Architecture: Architect, plan, and lead the development of the mobile app built with React Native and web platforms using React, ensuring a holistic and scalable system design.
• Vertical Video Feed & Playback: Own the core viewing experience featuring an infinite vertical video feed with instant time-to-first-frame, video preload/prefetch, player-instance recycling, and disciplined memory management across multiple concurrent video players.
• Technical Leadership & Mentorship: Serve as the technical expert and mentor for mid-level developers by providing guidance, conducting code reviews, and elevating engineering standards within the team.
• Standards & Reusability: adherence to coding standards, best practices, and promote a reusability-first mindset to maintain a clean, maintainable, and highly scalable codebase.
• Deep App Performance: Address complex performance challenges including app state management, native bridging, and video rendering optimizations such as player tuning, reducing frame drops, minimizing jank on scroll, and improving cold-start times.
• Monetization: Design and integrate in-app purchases, subscriptions, deep links, attribution, and user-behavior tracking end-to-end, including client SDK implementation and server-side receipt validation.
• Cross-Functional Collaboration: Work closely with Product, Design, and Backend engineering teams to deliver fast iterations of complex features in a dynamic startup environment.

Additional Expertise and Advantages:

• Experience with mobile CI/CD and release operations one of EAS, Fastlane, store submission, OTA updates (CodePush, EAS Update), and end-to-end testing.
• Background in high-growth startups or mobile entertainment products, with familiarity in vertical/short-form feed products similar to TikTok, Reels, or Shorts.
• Understanding of ad-tech and SSAI (AdMob, Google IMA) and subscription monetization modeling.
• Knowledge of DRM technologies (Widevine, FairPlay), offline downloads, and transcoding pipelines (Mux, AWS MediaConvert, AWS IVS) as beneficial skills.

Ideal Candidate Profile includes experience in the following areas: 

Streaming & vertical feed (the differentiator):

• Protocols/players shipped: HLS, LL-HLS (low-latency is the point for "TV"), DASH; react-native-video, Bitmovin, JW Player, ExoPlayer/AVPlayer, Mux, Video.js (web side).
• Vertical-feed mechanics: preload/prefetch strategy, player-instance pooling/recycling, FlashList/recycler usage, memory profiling, time-to-first-frame optimization.
• DRM (Widevine/FairPlay), ABR tuning, thumbnails/scrubbing, offline/download, CDN (CloudFront/Cloudflare/Fastly), transcoding (Mux/AWS MediaConvert/IVS).

RN architecture & performance:

• New Architecture (Fabric, TurboModules, JSI), Hermes; bare RN/CLI vs Expo (and EAS) — get their stance and why.
• Native modules written themselves (Swift/Kotlin/ObjC) — ask for a concrete bridge they built.
• State at scale (Redux Toolkit / Zustand / Jotai), Reanimated + Gesture Handler for the scroll/gesture layer, list virtualization (FlashList).

Monetization & growth plumbing:

• IAP/subscriptions: StoreKit 2, Google Play Billing, RevenueCat, server-side receipt validation.
• Ad-tech if relevant: AdMob, Google IMA, SSAI.
• Deep links/attribution: Branch, AppsFlyer/Adjust, Universal/App Links.

Analytics, quality, release:

• Product analytics: Amplitude/Mixpanel/Firebase; crash/perf: Sentry + Crashlytics, Firebase Performance.
• Testing: Jest, RN Testing Library, Detox or Maestro E2E; mobile CI/CD: EAS / Fastlane; store release management, OTA (CodePush/EAS Update).
• Auth: Cognito/Firebase Auth/Auth0, OAuth (Apple/Google), federated + biometric.

Backend/infra (scope it as secondary if FE-led):

• Node/NestJS or similar; MongoDB/Firebase as named; WebSockets/real-time for comments/live; AWS or GCP IaC (Terraform).

Bumpy is currently the fastest-growing dating app in the market, with over 20,000,000+ installs in just a few years. We are scaling even faster, and you have the chance to be part of this exciting journey.

Historically, international online dating has been plagued by hookup culture, language and cultural barriers, bots, and scams. Our mission is to change that. Regardless of skin color, language, or location, we aim to help people find their international soulmate easily and safely.

What will you do:

• Lead mobile team and implement best practices;
• Take care and control code quality;
• Develop & improve of our existing mobile products;
• Coordinate with other teams (Backend/QA/Design);
• Release mobile apps to AppStore & GooglePlay;
• Keep low-level error rates and monitoring.

Who are you:

• Proactive Engineer;
• Strong problem-solver;
• Leader with effective team collaboration;
• Analytical and communication mindset person;

Knowledge we need:

• React Native;
• Typescript;
• Deep understanding of React Native architecture;
• Understanding how to develop high performing code on React Native stack;
• MobX.

Optional:

• Native Java for Android;
• Native Objective-C for iOS;
• Experience in native modules/views development for both Android & iOS;
• Experience in TDD & CI/CD;

• Detox / Jest.

   

We offer:

• One of key roles in company;
• Lead the development of the mobile product;
• Real opportunity to ship competitive product to global market;
• Remote work;
• Flexible working schedule;
• Startup spirit;
• Own features end-to-end;
• You’ll work close with CTO.

We also require an experience in a developing products from very beginning and til supporting your code in production with real customers.

Let’s Bump!

This position is remote/hybrid.

But the devices are located in Kraków, so the candidate needs to be Kraków-based to test them at home/or at the office once we open one.

The role of software&hardware engineer in one (+ testing). We need someone who can test, but also review and rewrite the code themselves when needed.

We’re excited to offer a long-term opportunity for a technically curious Integration Engineer (Mobile & IoT) to join a team of professional engineers and designers. Together, you’ll be working on a US-based product that’s making a significant impact on the PropTech market.

This role offers the opportunity to work at the intersection of mobile applications, connected devices, and real-world integrations — collaborating closely with experienced developers and contributing to a growing and innovative platform.

About ElevateOS

ElevateOS has been improving the resident experience for over seven years. We created a single, all-in-one platform that makes it easy for property managers and resident staff to work together. Our goal is simple: to provide the best experience for residents by replacing multiple, confusing apps with one intuitive solution.

This is a stable, long-term product that continues to grow, and you'll have the opportunity to contribute to its ongoing success.

Our primary technology stack revolves around JavaScript. We use:

• React for the front-end,
• Node.js for the back-end,

• React Native for mobile development.

   

The platform also integrates with connected devices and smart property technologies, making this role especially interesting for candidates interested in mobile ecosystems, IoT, and hardware/software interactions.

Responsibilities:

• Configure, test, and troubleshoot smart devices and connected hardware systems;
• Support testing and validation of mobile applications and SDK integrations across Android and iOS platforms;
• Assist with reproducing and investigating software/hardware integration issues;
• Work with physical devices in a lab/test environment;
• Analyze requirements and help validate technical flows and integrations;
• Create and maintain technical and testing documentation;
• Collaborating closely with developers to identify and resolve issues;
• Support exploratory, integration, and API testing activities;

• Assist with maintaining stable testing and device environments.

   

Requirements:

• 2+ years of commercial experience in software engineering, mobile development, QA, or a related technical role
• 1-2+ years with React-Native 
• Understanding of mobile technologies and development concept. More developer than tester — someone who can fix and rewrite code, not just find bugs
• API integrations — must be comfortable working with REST APIs
• Familiarity with mobile integrations, SDK integrations (Kotlin, Swift - nice to have)
• Interest in IoT systems, smart devices, or hardware/software integrations (any experience with this would be a strong plus)
• Comfort working with physical devices and technical documentation
• Strong analytical and troubleshooting skills
• Engineering mindset with curiosity about how systems work together

• Good English communication skills.

   

Additional (good-to-have) skills

• Experience with Automated testing;
• Experience with CI/CD (CircleCI, GitHub Actions);
• Basic hands-on experience with hardware setup and configuration (smart home devices, IoT systems, or similar);
• Familiarity with keyless entry systems, smart locks, thermostats, or other connected devices;
• Comfort working with physical devices in a test environment — setting up, configuring, and troubleshooting hardware based on technical documentation;
• Experience with API testing;
• Basic understanding of mobile logs and debugging tools.