Jobs JavaScript / Front-End

About Us:

We are an outsourcing company working on top-tier projects, ranging from large corporations to government departments. Our team is passionate, professional, and ready to welcome a responsible Frontend Developer with strong skills and a collaborative mindset.

Requirements:

• Commercial experience with React (functional components, hooks)
• Strong knowledge of TypeScript
• Experience with state management (Redux / React Query / Zustand)
• Integration with REST APIs (async logic, error handling)
• Experience with modern styling approaches (Styled Components / Emotion / Tailwind / SCSS)
• Understanding of UI performance optimization (memoization, lazy loading, code splitting)

Mandatory requirement:

Confident and effective daily use of Claude Code.

Nice to have:

• Next.js
• WebSockets / real-time data handling
• Unit testing (Jest, React Testing Library)

• Understanding of CI/CD and code review processes

   

Responsibilities

• Develop and maintain SPA frontend applications
• Build scalable and maintainable component architecture
• Integrate with APIs and implement client-side business logic
• Optimize performance and improve UX
• Write clean, well-structured TypeScript code
• Use Claude Code to accelerate development, generate boilerplate, refactor, and improve code quality

• Participate in code reviews and technical discussions

   

What to Expect from Our Process:

We keep our hiring process simple, focused. Here’s how it works:

1. Initial conversation + test

An intro call to get to know each other, discuss your background. We will also ask you to complete a test to assess the level of your theoretical knowledge.

2. Technical interview

A deep dive into your experience. 

3. Interview with CEO/COO

A final conversation focused on company vision and cultural fit. It’s also your chance to ask any big-picture questions.

What We Offer:

• Competitive salary based on experience.
• Friendly and cohesive team environment.
• Opportunities for professional growth and development.
• Flexible working hours and the possibility of remote work.
• Exciting projects with modern technologies.

We are the AI Creation Team, a core part of Wix Harmony — Wix’s AI-powered site creator.
Our team builds the foundations that enable AI to create real websites: In Your Day-to-Day, You Will

• Write high-quality, scalable React + TypeScript code
• Design and implement new features end-to-end, from idea to production
• Review pull requests and help maintain strong engineering standards
• Collaborate with product managers, designers, and engineers to launch AI-driven products
• Work on challenging tasks across both frontend and backend (Node.js)

• Participate in technical discussions, architecture decisions, and continuous improvements

   

Requirements

• 4+ years of professional frontend experience
• Strong knowledge of TypeScript + React
• Experience building complex UI systems and scalable frontend architecture
• Strong communication skills and ability to work in cross-functional teams

• A mindset of ownership, product thinking, and high engineering standards

   

About the Team

• We are the AI Creation Team, a core part of Wix Harmony — Wix’s AI-powered site creator.
  Our team builds the foundations that enable AI to create real websites:
• AI-driven creation flows
• Designer tools and editing capabilities
• System prompt generation and orchestration
• Core infrastructure connecting the UI, backend services, and AI logic
• We work primarily with TypeScript, React, and Node.js, and we collaborate closely with designers, product managers, and AI/ML teams.

Job Description

As a Software Engineer for Wix’s Editor platform, you'll work on building and designing infrastructure to enhance Wix's business solutions, creating scalable APIs, and improving application runtime and UX infrastructure used by millions of users. In your day-to-day, you will: 

• Build infrastructure to allow extendability of existing Wix business solutions 
• Design and build APIs for internal and external users 
• Work on application runtime and UX infrastructure used by millions of users 

• Communicate with colleagues inside and outside of the team: R&Ds, developers, UX designers, business analytics managers and more, to align requirements, dependencies, and move things forward 

   

Requirements

• 5+ years of experience in frontend development
• Proficient in TypeScript and comfortable with Vanilla JS, React Code, or server JavaScript 
• Skilled in solving complex challenges and delivering robust software design and architecture 
• Knowledge about WebWorkers and iframes 
• Ability to write clear, maintainable code 
• Direct communicator who loves owning a feature from end-to-end 

• Working beyond FED framework knowledge, with API design experience – an advantage

   

About the Team

Editor Platform makes products that the majority of FED developers inside Wix are using. We are developing a powerful and flexible infrastructure for App Development. 

Our main challenge is to find a solution that will empower application experience, and open new capabilities, and horizons for developers inside and outside of Wix. 

Part of our work is making great API, tools and providing platformized UX framework for App Experience. 

We are on the stage of opening our products for 3rd party developers and a huge development community. And that's why we need you so much.

Department/Project Description

We develop a POS, plan management and reporting Car Wash solution that allows providing attended (employee) and unattended (customer) tunnel car washing service.

Designated team focuses on Payment and Subscription logic for POS platform

There are two labs:

- One in the USA
- One in Ukraine (Lviv)

Hardware Solution includes several points of sale(POS), different sensors, readers and cameras, payment terminals, servers, and automatic gates.

The solution supports both USA and Canadian markets. Ukrainian teams develop a PWA(web) application and a hybrid web application (.Net & Angular) that operates on hardware & cloud and supports full customer flow: from customer recognition or account creation to sale & directing their car to a tunnel, reporting, etc. All embedded development is on the client's side.

The client has huge plans for 2026 so you have a chance to become a part of the big success.

Requirements:

• Experience with Javascript, Typescript and Angular
• Basic understanding of software-oriented architecture, micro-services, etc
• Good analytical skills, debugging, and troubleshooting
• Intermediate English skills
• Good communication skills
• Teamwork
• Be proactive
• Will to work and learn

Would be plus experience in:

• OOP & Functional programming
• Unit tests engineering
   

Job Responsibilities

• Be ready to learn and develop on intense & complex project
• Cross-team communication and cooperation;
• Work in a dynamic Agile/Scrum-based environment;
• Work closely with the embedded team and customer integrations team to successfully bring the solution to production;
• Be a part of Globallogic team of successful professionals; 

For those who's interested in Hardcore:

• Performing requirements analysis, application development, product configuration, unit, and system testing, and production deployment within the framework of the infrastructure;

Flow

True SCRUM. Story points, Product owner, and Sprints include mandatory daily stand-ups, grooming, planning, demo, and retro sessions.

2-week sprints, releases strictly every 4 weeks, updates on demand.

Only agreed and paid overtime. Limited control from the Management team. Teams are fully self-manageable. No rushing or delivering work ASAP.

Limited communication and control from the client side.

We are seeking a talented Frontend Engineer with over 5 years of professional experience to join our dynamic team.

The role is based in the Kyiv, and we expect you to work fulltime in office.

You will be responsible for building sleek, responsive, and user-friendly interfaces to enable real-time control and monitoring of robotic swarms and sensor systems. Your work will directly contribute to the usability and efficiency of our cutting-edge robotics solutions.

What is your Day to Day Mission:

• Design, develop, and optimize frontend applications for controlling and visualizing robotic swarms and sensor data.
• Collaborate with backend engineers to integrate APIs and ensure seamless data flow between frontend and backend systems.
• Build intuitive, performant, and responsive user interfaces using modern frontend frameworks such as React or comparable web component frameworks.
• Work closely with UX/UI designers to translate designs into functional applications.
• Ensure code quality, maintainability, and scalability through clean coding practices and code reviews.
• Troubleshoot and optimize frontend performance for real-time applications.
   

What you bring to the team:
 

• Completed a technical university or a comparable background with a finished degree
• 5+ years of professional experience in frontend development
• Proficiency in TypeScript and web component frameworks
• Strong understanding of modern web development tools, concepts, and practices.
• Basic knowledge of backend systems and API integration.
• Experience with custom web based rendering engines
• Familiarity with RESTful APIs, WebSockets, and data visualization tools.
• Ability to write clean, efficient, and well-documented code.
• Excellent problem-solving skills and a passion for building user-friendly applications
• Communication in English is a matter of course for you.

Nice-to-Have:

• Experience with robotics, sensor data visualization, or real-time control systems.
• Knowledge of state management libraries (e.g., Redux, MobX) and frontend build tools.
• Familiarity with backend technologies such as Nodejs or similar.
• Understanding of testing frameworks and tools for front-end development.
   
• Why Quantum-Systems:

• We Stand with Ukraine!
• We believe in the power of combined efforts: straightforward tech expertise paired with a customer-centric focus.
• We are industry pioneers who are ambitious, bold, and visionary.
• We push limits, think outside the box, and strive for technological excellence to shape the future of aerial data.
• We promise to be your runway for individual and professional growth.

Client produces the best-selling iPad and iPhone app for pilots flying personal and business aircraft, corporate flight departments, and aircraft operators. Customers include individual pilots worldwide, Fortune 500 corporate flight departments, state and federal agencies, leading operators, the military, and leading aircraft OEMs. We have been in the App Store since its grand opening in July, 2008 and are consistently ranked in the top 50 grossing iPad apps in the App Store.

Requirements:

We are looking for candidates who demonstrate strong professional experience and commitment to best practices, code quality, and operational excellence.

Mandatory Skills:

• Mapping: Experience building web-based geospatial authoring and visualization tools
• Front-end Frameworks: Proficiency with both Angular and React
• Java: Extensive, current experience writing high-quality Java code
• Databases: Experience working with and optimizing relational and spatial databases (e.g., PostgreSQL, PostGIS)
• Python: Familiarity with Python for scripting or data processing
• AWS: Experience designing, deploying and operating services within Amazon Web Services
• Build Management: Proficient with Maven or other build management and dependency handling
• Application Monitoring & Debugging: Experience with monitoring tools and expert skills in debugging and troubleshooting production applications.

Highly Desired Skills:

• Spring Boot or Similar Web Frameworks: Experience building and deploying RESTful web services using Spring Boot or comparable modern frameworks
• Aviation Interest: A pilot-coder or someone with experience building solutions for the aviation domain is a significant plus
• Aviation Standards: Experience with any of the following: DO-200, ARINC-424, DO-272
• Teaming: Experience collaborating with globally distributed teams to bring solutions into production

The product company is looking for a Senior Frontend Engineer in Warsaw.
 

The company is a successful market leader, a live-streaming Platform with 450+ Million registered users.
Their B2C mobile platform allows millions of talented people worldwide to connect with their fans and monetize their talents.

Their live stream was founded in 2018 in the USA and is powered by 350+ global employees.

They offer: options, medical insurance (100% for employees and 75% for family members), lunch in the office, parking, multisport card/

Requirements: experience with React.js, Redux, Typescript.

Our client is a leading UK insurtech company offering an innovative pay‑by‑mile car insurance product built on a modern cloud platform and connected‑car technology. With a strong market presence and tens of thousands of active users, the company is recognised as a key player in the usage‑based insurance segment.
We are assembling a team of Full‑stack and DevOps engineers to support the platform during its phase‑out period. The project involves maintaining platform stability, delivering essential updates, and ensuring a seamless customer experience.

As part of the GlobalLogic team, you will grow, be challenged, and expand your skill set working alongside highly experienced and talented people.

If this sounds like an exciting opportunity for you, send over your CV!

Requirements

• Strong experience with TypeScript and React 
• Solid experience working with AWS
• Familiarity with Serverless Architecture, including hands-on or working knowledge of services such as AWS Lambda, AWS DynamoDB, Amazon RDS with PostgreSQL, Amazon ECS, AWS Step Functions
• Understanding of building and integrating APIs and cloud-based services.
• Experience working with distributed or cloud-native applications in an AWS environment.
• Ability to collaborate effectively in cross-functional engineering teams and contribute to scalable, maintainable system design.
• Good level of English

Job responsibilities

• Develop and implement features required to support the business exit process.
• Provide ongoing maintenance, including bug fixes and issue remediation, to ensure stable service for customers during the transition period.
• Support and maintain release pipelines, ensuring timely delivery of fixes and updates.
• Assist in maintaining system stability and performance while customers continue to use the platform.
• Potentially support the migration of the ByMiles back book to a long-term platform once the final customers have transitioned off the service.
• Collaborate with cross-functional teams to ensure smooth delivery of updates and minimal disruption to customers during the transition.

Who are we looking for?

We are looking for a developer who is ready to join our team and start working together on our projects.

Tasks?

Your tasks will focus on the skills and expectations listed below and the use of new approaches and technologies.

Why did the job open?

We want to invite a new specialist to the company's staff due to the increase in the number of projects.

Skills:

• 2+ years of JavaScript experience;
• 1+ years experience with TypeScript;
• 2+ years of experience with React and React Native;
• Introduction to Google Play Console and App Store Connect;
• Acquaintance with modern methods and tools for building front-end applications;
• Experience with REST;
• Experience with Redux/Mobx or other state management libraries;
• Ability to communicate well with process participants and team members related to business requirements;

• English level - Intermediate+ (written and spoken).

   

Will be an advantage:

• Experience writing unit tests for front-end components;
• Experience with Flipper debug tool;
• Experience with Expo;
• Experience with App Center and CodePush;
• Experience with GraphQL;
• Experience with other JS frameworks Vue/Angular etc.;
• Experience with Node.js;
• Experience in using agile methodologies and principles;

• Experience working with an international team.

   

What do we expect from you?

• Self-organization and independence in work;
• Attention to detail;
• Constant learning.

Company
The company’s core focus is lead generation in the iGaming domain, primarily through SEO-driven solutions. They work with long-term client projects and are currently expanding their internal development team.

Position
We are looking for a Lead / Senior Full-Stack Engineer(PHP/Wordpress/JS) to join an established front-end team. The role requires a senior-level engineer who can take ownership of complex tasks, contribute to technical decisions, and support overall code quality.

Full-time, long-term cooperation

Location
Remote
Candidates must be located within the EU time zone

Language
English – sufficient for regular communication with the team

Experience
5–10 years of commercial development experience

Team & Projects
You will join a stable, long-term team working on multiple client projects focused on lead generation platforms. The team already includes several front-end developers, and we are looking for a more senior specialist who can take ownership of complex tasks and support overall technical quality.

Tech Stack

• PHP (Symfony)
• WordPress
• JavaScript
• HTML / CSS

Key Requirements

WordPress (advanced level)

• Experience building complex WordPress-based systems (beyond simple blogs)
• Hands-on experience with WordPress Multisite
• Custom plugin development using:
  • Object-Oriented Programming
  • Composer / autoloading
  • Typed properties and variables
  • Custom database tables
• Experience creating custom caching solutions for high-performance systems
• Strong experience with WP_Query for complex queries
• Experience building custom tools to improve the WordPress developer or admin experience

PHP

• 5+ years of experience with modern PHP (8+)
• Experience with phpcs / phpcbf
• Experience defining custom sniffs or working with PHPParser / AST
• Experience with reflection and introspection
• Solid understanding and practical use of DTOs and Value Objects

General

• Experience working with Core Web Vitals and performance optimization

Start Date
ASAP

The role

As a Front-End Intern, you will support the development of clean, responsive, and user-friendly interfaces for our AI-driven platforms. You’ll work with front-end engineers and designers to build UI components, improve user experience, and learn modern development practices using React and Next.js.

This internship gives you hands-on experience turning product ideas into functional, polished interfaces used by our global B2B clients.
 

Requirements

• Currently pursuing a degree in Computer Science, Information Assurance, or a related field
• Basic knowledge of HTML, CSS, JavaScript
• Familiarity with React or another modern framework
• Interest in UI/UX and responsive design
• Strong attention to detail and willingness to learn
• Passion for front-end development
   

Responsibilities

• Assist in building and maintaining UI components in React and Next.js
• Contribute to responsive, accessible, and performant interfaces
• Work with designers to implement mockups and prototypes
• Help integrate front-end features with APIs
• Participate in documentation, code reviews, and team discussions
   

About HelloBiome

HelloBiome is an innovative B2B biotech startup at the forefront of AI-powered microbiome innovation. We are dedicated to revolutionizing consumer health by leveraging the microbiome. Through democratizing access to microbiome data, HelloBiome utilizes advanced AI technologies to develop targeted health solutions, transforming these insights into commercial applications for our business clients. Trusted by over 20 clients, including industry giants like Unilever, we are not just predicting the future of consumer health; we are actively shaping it. At HelloBiome, every step we take is towards a healthier future, optimizing well-being one microbiome at a time.
 

Our Culture

At HelloBiome, we thrive in a globally connected, remote work environment with team members distributed across Europe, the US, Canada, and Korea. Our headquarters are in San Francisco and Our dynamic and international team embodies a culture of kindness paired with a drive for innovation and excellence. We value proactive individuals who bring a self-starter mindset to their roles, always seeking new ways to advance our mission. Attention to detail is crucial in our work, as we are committed to delivering precise and impactful health solutions to our B2B clients.

This remote and flexible work structure not only fosters a diverse and inclusive atmosphere but also encourages a balance between personal growth and professional excellence. Join us and be part of a team that is shaping the future of consumer health through groundbreaking AI-powered microbiome innovation.

About Flamingo

Flamingo is revolutionizing the Managed Service Provider (MSP) industry with an AI-driven, open-source platform for IT and security. Our goal is to empower MSPs with automation, optimization, and scalability tools to enhance their operations.

Role Overview

As a Front-end Engineer at Flamingo, you’ll play a key role in building the core user experience and backend logic behind our AI-powered platform.

This is a hands-on engineering role with ~80% frontend and ~20% backend where you’ll collaborate with product designers, DevOps, and fellow engineers to ship quickly, iterate often, and build systems that scale.

Key Responsibilities

• Build and maintain core product features using Next.js and TypeScript
• Work with Relay and GraphQL on our main product; integrate REST APIs on internal tooling
• Collaborate with backend engineers on API and schema design
• Translate product and design specs into high-quality, user-centric interfaces
• Ensure performance, accessibility, and responsiveness across modern browsers
• Collaborate closely with the design team to evolve and maintain our design system
• Write clean, modular, well-tested code and contribute to code reviews
• Participate in architecture discussions and technical decision-making

Must-Have

• 5+ years of experience in frontend development
• Strong proficiency with React, Next.js (App Router), and TypeScript
• Hands-on experience with Relay and GraphQL - fragment colocation, pagination, store management
• Solid understanding of modern frontend architecture and component design
• Strong understanding of web standards, performance, and responsive design
• Experience working with REST APIs and integrating third-party services
• Strong Git workflow and code review culture

Nice-to-Have

• Experience with Supabase or similar BaaS platforms
• Familiarity with server-side rendering and performance optimization
• Understanding of database design (SQL)
• Exposure to authentication flows (OAuth, JWT, magic links)
• Familiarity with accessibility and internationalization best practices
• Experience with CI/CD workflows and deployment pipelines

Why Join Flamingo?

• High-impact role: As a front-end engineer, you’ll work across the entire product experience from backend architecture to the user interface, shaping how thousands of MSPs interact with our platform.
• Ownership & Equity: Competitive compensation and a meaningful equity stake in a high-growth, early-stage startup.
• Modern Tech Stack: Built with React, Node.js, and open-source tools, all in a scalable microservices architecture.
• Remote-first Culture: Work from anywhere and collaborate with a team of senior engineers, designers, and product leaders.
• Mission-Driven Team: Be part of a company that’s redefining how IT and security services are delivered, making powerful automation tools accessible to all MSPs, not just the enterprise giants.

We are looking for a Frontend Developer (Strong Junior/Middle with 2+ years of experience) for a full-time position in the office.

Requirements:

- Strong knowledge of HTML, CSS, and JavaScript
- Experience with frontend frameworks/libraries such as React, Angular, Vue.js, or similar
- Understanding of application architecture, design patterns, OOP, and functional programming principles
- Experience with responsive and cross-browser layout
- Good grasp of adaptive and mobile-first design principles
- Understanding of REST API integration
- Experience writing tests (unit and e2e) and ensuring proper test coverage
- Experience with version control systems (e.g., Git)
- Understanding of website performance optimization and security best practices
- Ability and willingness to learn new technologies
- English proficiency – B1 level or higher

Will be a plus:

- Experience with WordPress, including custom theme and plugin development    
- Experience with UI frameworks (Bootstrap, Tailwind CSS, etc.)  
- Knowledge of build tools (Webpack, Vite, etc.)  
- Understanding of SEO best practices

We offer:

- Career and professional growth;
- Decent salary;
- Interesting projects in a professional team;
- Trainings, seminars, meetings and conferences at company expense;
- Pleasant and quite working atmosphere.

We are looking for a skilled Frontend Developer with strong expertise in JavaScript, TypeScript, and Next.js to join our team. You will work on developing and maintaining modern web applications, implementing new features, and ensuring high-quality, responsive user interfaces.

Responsibilities:

• Develop and maintain web applications using Next.js
• Implement new features and improve existing functionality
• Ensure responsive and accessible UI using modern HTML/CSS practices
• Optimize application performance and code efficiency

Requirements:

• 2+ years of commercial experience with JavaScript (ES6+) and TypeScript
• Strong experience with Next.js, React
• Solid knowledge of HTML/CSS and responsive design principles
• Experience working with REST APIs
• Ability to deliver clean, maintainable code following best practices
• Experience with Git
• English — Upper-Intermediate or higher

Nice to have:

• Experience with Bootstrap or Tailwind CSS
• Payment integrations (e.g., Stripe or similar)
• Understanding of client–server communication
• Experience with React Native

EcomTraffic is looking for a Shopify Developer who loves building high-performing e-commerce experiences and enjoys working with modern AI-powered development tools.

We work with ambitious e-commerce brands across Europe and focus heavily on conversion rate optimization, performance, and experimentation. As a Shopify Developer at EcomTraffic, you won’t just build pages - you’ll help build experiences that convert.

What you’ll do

• Develop and maintain custom Shopify themes and sections
• Build high-performance landing pages optimized for conversion
• Implement CRO experiments and A/B tests
• Work closely with our CRO strategists and designers
• Build reusable Shopify components and scalable theme architecture
• Integrate third-party apps, APIs, and tracking setups
• Help improve our internal development workflows

What we’re looking for

• Strong experience with Shopify (Liquid, themes, sections, metafields)
• Solid skills in HTML, CSS, JavaScript
• Experience working with Git and modern development workflows
• Strong eye for performance and clean code
• Comfortable collaborating with designers and CRO specialists

Bonus points if you:

• Have experience working with Shopify Plus
• Have experience with CRO or experimentation
• Have experience using AI-assisted development tools such as Cursor
• Have experience optimizing Core Web Vitals

Why join EcomTraffic?

• Work with fast-growing e-commerce brands
• Be part of a team focused on experimentation and innovation
• Use modern tooling and AI-assisted development workflows
• Freedom to build, experiment, and improve
• Competitive salary
• Remote-friendly environment

About EcomTraffic

EcomTraffic is a conversion rate optimization agency for e-commerce brands. We help brands unlock more revenue from their existing traffic through experimentation, data, and better user experiences.

Apply

Send us:

• A short introduction
• Links to Shopify stores you’ve worked on