Jobs React.js

Position name: Senior React Native developer
Level: Senior Only
Hard skills requirements (including years):

• A minimum of 6 years developing React Native applications.
• Experience with Expo, Expo Router, Tamagui UI Toolkit, Zustand/Tanstack Query for state management

Soft skills requirements:

• Ability to work independently and collaboratively in a team environment.
• Excellent problem-solving skills and attention to detail.

Office/Remote: Remote
Project tasks:

• Pixel-perfect replication: Replicate the Lovable mobile site exactly. Every hex code, shadow, and frosted-glass effect must match the high-end web design 1:1. We do not compromise on design quality.
• AI-Streamlined Porting: Leverage Claude/LLMs to "convert" our React web logic and Supabase calls into high-performance React Native code to maintain startup speed.
• High-end Performance : Implement a vertical video feed using FlashList and the New Architecture to ensure 60-120fps scrolling with zero "jank."

English level: Upper

We are a Ukrainian outsourcing company Join.To.IT, founded in 2012, and delivering software solutions across diverse business domains.
We focus on building long-term partnerships with our clients and delivering solutions that create real business impact. Our team consists of experienced professionals who take ownership of their work, value clear communication, and are committed to high standards in everything they do.
At Join.To.IT, we create an environment where engineers can grow, influence technical decisions, and contribute to meaningful projects alongside a strong and supportive team. 

Responsibilities
Develop and maintain web applications using React.js
Participate in team and client calls, discussions, and troubleshooting sessions
Ensure high performance, responsiveness, and quality of applications
Maintain and improve code quality, structure, and scalability
Collaborate with cross-functional teams (backend, QA, design)
Provide occasional support for business or customer-related requests
Take ownership of tasks and contribute to continuous improvement

Requirements
1+ year of commercial experience with React.js, Redux, and TypeScript
Strong knowledge of JavaScript  
Experience working with AI agents - Claude code | Cursor | windserf | Codex GPT | Antigravity
Familiarity with Figma tools
Project estimation skills
Experience working with WebSockets
Proficiency in HTML5, CSS3, and CSS preprocessors (Sass/Less)
Experience with Git and version control workflows
Experience working on complex systems in a team environment
Strong communication skills and collaborative mindset
Upper-Intermediate (B2+) English or higher

Nice to Have 
Familiarity with Docker or basic DevOps practices
AWS, Digital Ocean

We Offer
Office-based or hybrid work format (Kyiv, near Vasylkivska metro station with shelter, Starlink and uninterrupted power supply)
Free gym access near the office
Paid vacation and sick leave
Compensation for professional courses and development
Supportive and loyal management

As our Senior Frontend Engineer, you’ll build and maintain high-performance, scalable web applications that deliver seamless user experiences. You’ll operate with full ownership: deploy daily and make fast decisions.

This is an intense, hands-on role with full ownership. We expect you to push for excellence and raise the bar.

📍 Location: Remote with overlap to our New York City HQ (EST)

Where You’ll Create Impact

• Build, ship and own major parts of the product UI in React + Next.js
• Design and optimize interactive experiences that make complex workflows simple
• Work closely with product, design and backend to ensure seamless integration and clarity
• Contribute to architecture, performance, accessibility and responsiveness across browsers
• Help define our frontend system and component library as we scale

• Elevate the quality of the product through thoughtful details

   

What Sets You Up for Success

• Hardcore work ethic and high agency
• 5+ years of experience in frontend development with React (Next.js a strong plus)
• Solid grasp of JavaScript and TypeScript: scoping, closures, context, prototypes, classes, etc.
• Strong understanding of responsive UI, accessibility and usability principles
• Experience building and testing APIs; comfort with HTTP, Postman, and debugging
• Clear product thinking, eye for polish and attention to design details
• Pragmatic mindset: you move forward fast
• Curiosity and autonomy - you dig in, learn fast and solve problems without waiting
• Fluent in English (C1+) with strong written and verbal communication

Project

US/Canada event tickets purchase platform with tickets, event, locations, performers aggregation via third-party API, booking, purchase, payments.

Requirements:

— 1 year of commercial experience with JavaScript, TypeScript, React, Next.js
— 1 year of commercial experience with HTML, CSS, Tailwind CSS
— basic knowledge Python and Django REST Framework;
— Ability to communicate in English
— Understanding of REST principles
— The knowledge of basic HTTP principles
— Experience with git & github
— Knowledge of the agile & scrum the basics

Nice to Have:
— Skills in FastAPI, react-router-v7
— Advanced knowledge of PostgreSQL
— Experience with Celery, Redis
— Familiarity with MongoDB

Pixel mindIT is an innovative IT company specializing in software development, web applications, and mobile apps. We bring together a team of professionals who work with the latest technologies. You’ll find a creative approach to solving complex challenges, efficient project management, and a continuous improvement process with us.

Requirements:

- knowledge JavaScript/TypeScript
- еxperience in developing on React.js;
- knowledge of Next.js would be an advantage

- familiarity with Redux/React Redux

- proficient in using Git.
- English level: B1 or higher.
 

What We Offer:
- Flexible working hours.
- A friendly and welcoming work environment in a comfortable office.
- Official employment with a competitive salary based on your experience and skills.
- An exciting opportunity to contribute to innovative projects.

You are a universal soldier, a swiss-army knife when it comes to the front-end frontline of a website, a service, or a marketplace. You're comfortable working with a talented band of designers and engineers. Does that sound like yourself? Then we have an opportunity for you.

Who you are:

• You have at least 2+ years of relevant work experience;
• You have strong knowledge of HTML 5, CSS3, responsive, cross-browser markup, and CSS preprocessors;
• You know JavaScript and you are aware of the latest ES features;
• You are confident with React framework;
• You understand HTTP capabilities and you worked with API integration via REST;
• You have experience working with WebPack / Parcel, Babel;
• You have an economics or mathematics degree (education);
• You're a naturally empathetic problem solver;

• You are ready to self-educate and learn things from above rapidly, still delivering the result in time.

   

Bonus points for:

• You worked with Storybook or a UI library (Material UI);
• You’ve designed APIs or worked with GraphQL;

• You are capable of speaking English to talk to a client.

   

As a front-end engineer, you'll:

• Translate UI/UX designs from Figma to actual markup and code;
• Build front-end systems for stand-alone products;
• Make a technical assessment of designs;

• Take part in the estimate process.

   

Here are some examples of tasks you would be doing:

“Take Figma designs and convert them into re-usable react components”, “Create a wizard onboarding form based on designs and requirements", “Add a feature to an existing project”.

Key Requirements

HTML/CSS/Preprocessors:

• Strong command of HTML5 and CSS3.
• Hands-on experience with SASS, including mixins and style generators.
• Ability to build websites that work smoothly across different browsers, adapt to various screen sizes, and include responsive mobile layouts.

JavaScript/TypeScript:

• Confident use of modern JavaScript (ES6+).
• Solid foundational understanding of TypeScript.
• Competence in handling and managing DOM events.

React & State Management:

• Practical background in developing applications with React.
• Experience applying modern React hooks in real projects.
• Working knowledge of state management tools, including Redux

About Arima

Arima (founded 2019) builds Canada’s most advanced marketing-data platform. Hundreds of brands use our live market-mix modeling, consumer-insight discovery, and media-planning tools to turn raw data into smarter decisions.

What you’ll do

• Design and ship new customer-facing features with React and TypeScript.
• Own components end-to-end: architecture, tests, performance, documentation.
• Incorporate FSD (Feature-Sliced Design) pattern
• Keep the UI fast and accessible across browsers and devices.
• Work closely with product, data-science, and back-end teams through GitHub PRs, Slack chat, and Google Meet.
• Champion clean, modular code (SOLID, proven design patterns).

Our front-end stack

• React, TypeScript, Vite
• Zustand state-management
• MUI 6, CSS-in-JS
• REST (axios)
• Astro.js for the landing page

You bring

• Experience with JavaScript / TypeScript.
• Understanding of state management and component design.
• Experience integrating REST APIs and writing maintainable, testable code.
• Confident spoken and written English (B2 +) for daily stand-ups and code reviews.

Nice-to-have

• Astro SSR experience
• GraphQL
• Performance tuning & Web Vitals
• Experience with FSD pattern
• Interest in data-visualization

Why Arima?

• Competitive USD salary, paid regularly
• 100% remote: work anywhere in Ukraine
• Flexible hours, minimal meetings
• Small, friendly team: half Canada-based, half Ukraine-based
• Real product ownership and influence on architecture
• No outsourcing: permanently join our team to build the software product together

Hiring process

1.  30-min intro chat + light tech screen
2.  60-min deep-dive coding interview with our engineers
3.  Offer - no homework test

Company: Trusted Gaming – Part of Traffic Label Group

About Trusted Gaming
Trusted Gaming is a fast-growing division of Traffic Label Group, specialising in the creation of modern web platforms and user experiences for the online gaming and casino industry. Our products combine innovative design, high performance, and scalability. We’re expanding our front-end engineering team and are seeking a skilled React Developer to help drive new product builds and refine existing architectures.

About Traffic Label

Traffic Label is a fast-growing, data-driven technology company operating in the iGaming and affiliate marketing space, building scalable products focused on performance, analytics, and automation across global markets.

Role Overview
You will be part of a small but highly capable engineering team responsible for developing and maintaining performant, well-structured, and scalable front-end applications. This role involves collaborating closely with backend developers, UX/UI designers, and product managers to deliver best-in-class gaming experiences.
You’ll work primarily in React + Next.js, employing modern patterns, libraries, and tooling. The ideal candidate is both hands-on and detail-oriented, with a strong sense of quality and an interest in building well-architected systems that balance creativity and reliability.

Key Responsibilities

• Build interactive and responsive front-end components using React 19+ and Next.js 15+ (App Router, SSR, server actions).
• Develop modular, reusable code using modern frameworks like TypeScript, Tailwind CSS, and Mantine UI.
• Implement efficient data management with TanStack Query and TanStack Form.
• Integrate and manage REST APIs using tools such as Swagger / OpenAPI for consistent type-safe interfaces.
• Collaborate with the backend team on performance optimization, deployment, and continuous integration (CI/CD).
• Maintain and evolve a Turborepo monorepo architecture, ensuring clean development workflows.
• Apply best practices for code versioning and documentation using Git and relevant CI/CD tools.
• Contribute to architectural discussions, proposing improvements and shaping technical direction.

Skills & Experience Required

• Proven experience building complex, scalable web applications with React (v19+) and Next.js (v15+).
• Strong understanding of TypeScript and modern front-end tooling (Vite, Tailwind CSS).
• Experience with Mantine UI, React Aria Components, and responsive component design.
• Solid grasp of TanStack Query/Form, REST API integration, and Swagger / OpenAPI documentation.
• Familiarity with Turborepo and monorepo design principles.
• Working knowledge of Git and CI/CD pipelines.

Nice to Have

• Advanced React concepts: hooks, composition, compound components, render props.
• Advanced CSS techniques: animations, container queries.
• Automated API type generation (e.g. Orval).
• Code consistency and formatting tools: ESLint, Prettier, Biome.
• Exposure to Pixi.js, or general game development experience a plus.

What We Offer

• Fully remote role within Czech Republic – flexible hours.
• Collaborative and innovative culture across the Traffic Label group.
• Opportunities to experiment with emerging technologies in the gaming space.
• Competitive salary and benefits package tailored to experience.
• A chance to contribute to products that reach millions of users.

About Us

At True Path Leads, we're building the next generation of performance marketing infrastructure. Our platform processes millions of events daily across a wide ecosystem of integrations and partner channels. We're looking for a Senior Frontend Developer who takes ownership of what they build — from architecture decisions to pixel-level details. You'll work closely with product and design to ship high-quality interfaces used by real people every day.

Tech Stack

React · TypeScript · Tailwind CSS · REST APIs · JavaScript (native) · HTML & CSS · Shadow DOM · Web Components

What You'll Do

• Build and maintain complex, production-grade React apps with TypeScript.
• Develop embeddable, framework-agnostic widgets using native Web APIs and Shadow DOM.
• Design component libraries and UI systems that scale.
• Integrate with REST APIs and collaborate on API contracts with backend.
• Participate in architecture discussions and technical roadmap decisions.
• Keep a strong focus on performance, accessibility, and browser compatibility.

What We're Looking For

• 5+ years of frontend development, at least 2 years in React.
• Deep JavaScript fundamentals — closures, event loop, prototype chain — you know what happens under the hood.
• Strong understanding of the browser rendering pipeline, Shadow DOM, and Web Components.
• Experience building third-party embeddable widgets or SDKs.
• TypeScript proficiency — types that actually help, not just satisfy the compiler.
• Solid HTML/CSS — complex layouts without reaching for a library.
• Clear communicator, works well in a distributed async team.

Nice to Have

• Experience with Lottie / SVG animations and web animation APIs.
• Familiarity with performance profiling tools (Lighthouse, Chrome DevTools).
• Experience contributing to or maintaining a design system.
• Background in ad-tech, lead generation, or performance marketing platforms.

What You'll Get

• Fully remote position with flexible working hours.
• High ownership — architecture decisions are yours to drive.
• Work on interfaces used by real users at real scale.
• Fast-paced startup environment with no bureaucracy.
• Competitive compensation based on experience and skill set.
• Clear growth path toward Frontend Architect or Tech Lead roles.

Join us as a Lead Frontend Engineer (React.js) and take ownership of shaping the frontend architecture and engineering direction of Zeely’s AI-driven product.

We’re looking for a strong technical leader who thrives in ownership, scale, and complexity — someone who can define architecture, drive key technical decisions, mentor a team of engineers, and ensure high standards of quality and delivery speed. This role is strategic for Zeely’s technical growth: you will influence not only how we build, but how fast and how well we ship.

Zeely AI is an all-in-one AI marketing platform that helps small businesses and marketing teams grow faster and achieve their goals through high-performing content and automation. Our platform enables users to create ad creatives, UGC videos, viral content, banners, and more, as well as launch effective paid and organic campaigns across Meta channels.

In simple terms, we’ve made world-class AI marketing tools and solutions accessible to businesses that previously could only get this level of support from large brands with expensive marketing teams.

A few things that define where we are today:

• 4 years on the market — a stable, profitable company backed by top international investors;
• 4x growth over the past year;
• 1,000,000+ businesses already use Zeely, and that number keeps growing every day;
• Top 3 in our category in the US market;
• 160+ specialists on the team;

• US-focused, with a global user base.

   

Your Key Responsibilities:

• Define and evolve the frontend architecture for a complex AI-driven product built on a modern React stack.
• Lead and grow a Frontend team (8-10+ engineers), set technical standards, and provide mentorship.
• Drive key technical decisions with full ownership — from architectural rationale to implementation and long-term impact.
• Ensure production-grade quality from the first iteration, balancing speed and engineering excellence.
• Optimize server state management, performance, and UX for high-load B2C environments.
• Oversee the full SDLC: from idea and design alignment to release and measurable product impact.
• Lead and structure the code review process, ensuring maintainability, scalability, and clean architecture.
• Maintain high code quality standards, including testing strategy and technical documentation.
• Work in a continuous delivery environment with frequent releases.

• Collaborate closely with Product and Design to ensure business impact, usability, and data-driven decision-making.

   

Your Key Responsibilities:

• Define and evolve the frontend architecture for a complex AI-driven product built on a modern React stack.
• Lead and grow a Frontend team (10+ engineers), set technical standards, and provide mentorship.
• Drive key technical decisions with full ownership — from architectural rationale to implementation and long-term impact.
• Ensure production-grade quality from the first iteration, balancing speed and engineering excellence.
• Optimize server state management, performance, and UX for high-load B2C environments.
• Oversee the full SDLC: from idea and design alignment to release and measurable product impact.
• Lead and structure the code review process, ensuring maintainability, scalability, and clean architecture.
• Maintain high code quality standards, including testing strategy and technical documentation.
• Work in a continuous delivery environment with frequent releases.
• Collaborate closely with Product and Design to ensure business impact, usability, and data-driven decision-making.
   

What You Need to Join Us:

• 3+ years in a Lead / Team Lead role, managing and mentoring 10+ engineers in a fast-paced product environment.
• 8+ years of hands-on Frontend experience, with strong production expertise in React and TypeScript.
• Proven experience shaping frontend architecture in high-load B2C products (100k+ users).
• Solid experience with modern frontend tools, including Redux Toolkit and/or RTK Query, Tailwind CSS, shadcn/ui, and React Hook Form.
• Strong understanding of performance optimization, scalable component architecture, server-state management, and UX under load.
• Experience working in Agile product teams with continuous delivery and frequent releases.
• Ability to balance speed, maintainability, and engineering quality.
• Strong ownership mindset, product thinking, and clear communication.
• English: Intermediate+; Ukrainian: fluent.
   

Would Be a Strong Advantage:

• Experience with payments and subscription flows (Stripe or similar providers).
• Experience with product analytics tools such as Mixpanel, Sentry, or similar.
• Experience building dashboards and data-heavy interfaces (charts, large tables, filtering, pagination, virtualization).
• Experience with real-time or near-real-time updates (SSE, polling, WebSockets).
• Experience working on AI-powered products, including integrations with AI services, async generation flows, and UX for AI-driven features.
   

Why It’s Exciting to Work With Us:

• Build AI-powered tools with real impact, helping over one million small businesses grow, compete, and launch ads without agencies or complex marketing setups.
• Join a strong A-level team of experienced professionals who set a high bar and push each other to do better work.
• Remote-first approach: work from anywhere, with access to our offices in Warsaw and Kyiv.
• We take care of the essentials. Paid time off, sick leaves, and financial support with private entrepreneurship matters.
• Regular performance reviews to ensure your growth is transparent and rewarded.
   

Recruitment Process:

Recruiter interview → Test assignment → Tech Interview → Interview with COO / Co-Founder → Reference check → Job offer.

You’ll influence core product decisions, and help build a fast-growing, financially stable AI platform — not as a contributor on the sidelines, but as an owner of critical parts of the product.
 

Send us your CV — we’d love to get to know you better! 💚

Tango is a successful, marketleader, a live-streaming Platform with 450+ Million registered users, in an industry projected to reach $240 BILLION in the next couple of years. 

The B2C platform, based on the best-quality global video technology, allows millions of talented people around the world to create their own live content, engage with their fans and monetize their talents.

Tango live stream was founded in 2018 and is powered by 300+ global employees operating in a culture of growth, learning, and success!

The Tango team is a vigorous cocktail of hard workers, creative brains, energizers, geeks, overachievers, athletes, and more. We push the limits to bring our app from “one of the top” to “the leader”. 

The best way to describe Tango's work style is not to use the word “impossible”. And we believe that success is a thorny path that runs on sleepless nights, corporate parties, tough releases, and of course our users' smiles (and as we are a LIVE app, we truly get to see our users all around the world smiling right in front of us in real-time!).  

Responsibilities

• Development and support of SPA on ReactJS: web version mobile-first of a high-load application, admin panels for internal use, and marketing pages
• Collaborate with other teams to effectively meet the product and technical needs of the project
• Proactively participate in improvements and existing solutions tuning
• Share expertise and knowledge with your teammates

Requirements

• At least 5 years of commercial experience in development in JS (ES6+)/Typescript
• Strong knowledge of CSS, HTML5, SASS, Jest
• At least 2 years of commercial experience in development in with ReactJS version 16+ (hooks)
• Experience with state management frameworks: Redux and Redux toolkit preferred
• Intermediate English

What we offer:

• International company with several offices in different locations : Tel-Aviv, Kyiv, Warsaw, Limassol.
• Granting an Option;
• A professional environment with great people to work with;
• Competitive salary, performance review;
• Flexible working hours, no one here tracks your work time because our culture is built on trust and cooperation;
• Social package, including sports coverage, elite medical insurance for you and family;
• 20 working days paid vacation and 100% sick leaves coverage;
• Opportunities to make a difference, to develop and grow;
• Regular corporate celebrations, team buildings and fun activities;
• Comfortable office close to the metro station. Our Kyiv office is open 24/7 with all safety and health measures in place.

Senior React Native Engineer / Mobile Tech Lead (Full Ownership Role | Ukraine)

We are looking for a strong Senior React Native Engineer ready to take full ownership of a mission-critical mobile app (iOS + Android) used at scale in production.

This is not a feature-only role — it’s a Mobile Owner / Tech Lead-level position, responsible for the entire lifecycle of the app.

🔧 Product context (high-level)

A logistics & delivery platform with:

AI-powered route optimization
Real-time order tracking
Integrated chat (sales / support / fulfillment)
Self-scheduling for deliveries
Driver-facing mobile operations app
💡 Core responsibilities
Full end-to-end ownership of the mobile app (iOS & Android)
App maintenance, releases, production stability & incident handling
Major refactoring of a legacy React Native codebase
Designing and implementing offline-first architecture (critical)
GPS / geolocation + background tracking implementation (critical)
REST API + real-time event integration
Performance, reliability, and architecture improvements
Native module integration (Swift/Kotlin when needed)
Release management and production readiness ownership
🧠 Who we are looking for
5+ years in mobile development, 3+ years in React Native
Strong experience with pure React Native (no Expo)
Proven background in offline-first mobile apps
Hands-on experience with GPS / background location tracking
Strong debugging skills in complex production RN apps
Experience with both iOS & Android release cycles
TypeScript + modern React patterns

We're seeking a talented React Developer to join the Retail Broker Web team and contribute to the development of a secure, scalable trading platform. You will play a key role in building and maintaining a modern web application, ensuring high performance, reliability, and compliance while delivering seamless access to trading and account services for users. If you're passionate about modern web technologies and fintech products, we'd love to hear from you!
 

Core Competence:
 

• At least 3+ years of professional experience in web development with a strong focus on React and modern front-end architecture.
• Solid knowledge of TypeScript, Redux, and RxJS for building scalable and maintainable applications.
• Experience in designing, developing, and testing modern web applications.
• Strong understanding of web development principles, performance optimization, and responsive design.
• Proven ability to troubleshoot, debug, and resolve complex technical issues.
• Experience working with Git and within agile development environments.
• Upper-intermediate level of English for effective collaboration within an international team.
   

Preferred Qualifications:
 

• Experience working with design systems and UI component libraries such as MUI or styled-components.
• Familiarity with Express.js and backend communication patterns.
• Experience with analytics and monitoring tools such as Sentry or Google Analytics.
• Prior experience working with fintech, trading platforms, or financial applications.
• Interest in trading, investing, or wealth management products.
   

What We Offer You:
 

• Competitive compensation aligned with market standards and your professional expertise.
• Opportunity to work on a modern fintech product within a collaborative agile team.
• Professional growth through working with modern technologies and scalable systems.
• Flexible work environment with a strong focus on productivity, collaboration, and continuous improvement.

We're seeking a React Native Developer to join our growing team and help us expand into mobile app development. You'll work on exciting projects that bridge our web expertise with mobile innovation, creating seamless experiences across platforms.

‼️ AI-assisted development is key requirement

We actively embrace AI tooling as part of our engineering culture. Strong candidates will be comfortable using AI coding assistants to accelerate development, improve code quality, and tackle complex problems faster.

Responsibilities

• Architect, develop, and maintain mobile applications using React Native (iOS and Android)
• Collaborate closely with product, backend, and design teams to deliver seamless user experiences
• Leverage AI agents and tools to improve velocity and code quality
• Integrate applications with Firebase and Webflow APIs
• Translate UX/UI designs into smooth, responsive, and pixel-perfect mobile interfaces
• Experience with interactions and animations
• Demonstrate a solid understanding of the full mobile development life cycle
• Write clean, testable, and well-documented code

Requirements

• 2–4 years of experience with React Native
• Strong knowledge of TypeScript, JavaScript, the React ecosystem, and state management tools
• Familiarity with Xcode and Android Studio, with experience publishing and maintaining apps on the App Store and Google Play
• Proven use of AI-assisted development tools in a professional setting
• Ability to take ownership of features end-to-end, from design to production
• Strong problem-solving skills and adaptability to evolving project needs
• Excellent communication and collaboration skills