Вакансии JavaScript Developer

Mobion is a cloud-based white-label platform for ride-hailing, delivery, and corporate transport services. Launched in 2016 by Devart, it supports operators in 6+ countries and has handled over 20 million rides for 4M+ users and 500K drivers.
Our ecosystem includes rider and driver apps, a real-time dispatch system, admin dashboards, and branded web portals — all backed by a secure, scalable Azure infrastructure. We offer both SaaS and franchise models to help partners grow fast across regions.

Your future team of professionals

You will join a dynamic team of specialists passionate about our product. The team consists of a Project Manager and a JavaScript Developer, with additional support from the broader Development team (QA engineers and Backend developers).

Your future challenges

You will be responsible for developing new websites and maintaining existing ones. This includes building and optimizing web pages, contributing to a UI component library, and ensuring smooth deployment to production. You will also tackle challenges related to performance optimization, testing, and resolving code issues to deliver high-quality, reliable websites.

Impact you will make

• Implement new technologies and methods to optimize processes and improve product quality.
• Design the architecture of frontend applications using modern technologies and best practices.
• Prepare releases and deploy new websites to production.
• Develop UI components and web pages for websites.
• Conduct code reviews and ensure compliance with coding standards.
• Perform module testing (unit testing).
• Train and mentor junior developers, and conduct internal workshops and seminars.
• Collaborate closely with developers, designers, QA engineers, and other project stakeholders.

Skills we are looking for

• At least 5 years of experience as a Front-end Developer, preferably in a tech or SaaS environment.
• Higher education in Computer Science, Information Technology, or a related field (relevant certifications are a plus).
• Strong knowledge of TypeScript, HTML, CSS, and frameworks such as Angular and React.
• Understanding of web server configuration and operating principles.
• Knowledge of Docker architecture and virtual environments.
• Proficiency with version control systems (Git) and project management tools (e.g., ClickUp).
• Familiarity with unit testing libraries.

Andersen is hiring a Junior QA Automation Engineer (JavaScript) for a UK FinTech project. The role involves testing web-based solutions that support financial operations through data and analytics tools.
The customer is a technology-focused FinTech company with a strong foundation in market expertise, quantitative research, and modern cloud technologies. The company builds data-centric solutions for the financial industry, specializing in advanced analytics and software engineering to create innovative tools that support informed decision-making in trading and investment.
The project is focused on developing advanced FinTech solutions, including an analytics platform with real-time data visualization and trading strategy tools, as well as a web application for brokerage trading. Both aim to enhance decision-making and streamline trading through intuitive, data-driven interfaces.

Responsibilities

• Creating, maintaining, and executing automated test scripts using Cypress.
• Writing clear and maintainable JavaScript code for test automation.
• Identifying test scenarios.
• Detecting issues and inconsistencies in web applications during test execution.
• Documenting bugs and reporting them to the development team using Jira.
• Working closely with developers, the product manager, and the QA team to understand requirements and functionality.
• Ensuring Cypress is integrated with CI/CD pipelines (GitLab).

Requirements

• Experience in QA Automation for 6+ months.
• Experience with Cypress for writing and executing automated tests.
• Knowledge of JavaScript and TypeScript, understanding of HTML, CSS, and the DOM structure for web application testing.
• Knowledge of software testing principles, including functional, regression, and end-to-end testing.
• Ability to write and execute test cases and scenarios.
• Ability to identify and analyze bugs in web applications.
• Basic debugging skills to determine the root cause of test failures.
• Basic understanding of CI/CD pipelines and how test automation integrates into them.
• Level of English – from Intermediate+ and above.

As a Junior Frontend Developer at Vaimo, you will play a crucial role in delivering engaging digital experiences through user-friendly web applications. You will work alongside a talented team of developers and designers, gaining valuable experience in a fast-paced environment.

Key Responsibilities

• Develop and maintain user interfaces using JavaScript, React, and Next.js.
• Collaborate with designers to implement visually appealing and functional web applications.
• Integrate headless CMS solutions like Contentful and Sanity into projects.
• Operate on cloud platforms like Vercel to build, deploy, and scale modern web applications and static sites.
• Participate in code reviews and contribute to team discussions.
• Stay updated with the latest web development trends and technologies.

Required Skills & Qualifications

• At least 2 years of commercial experience with web development.
• Proficiency in JavaScript and familiarity with React and Next.js.
• Basic understanding of headless CMS platforms (e.g., Contentful, Sanity).
• Strong problem-solving skills and a willingness to learn.
• Familiarity with version control systems (e.g., Git).
• Curiosity to explore how AI can enhance frontend development and digital experiences.
• Excellent communication skills and a team-oriented mindset.
• Upper-intermediate English.
• Location – Kyiv or close, to be able to visit office from time to time.

Nice-to-Have Skills

• Experience with CSS frameworks (e.g., Tailwind CSS).
• Understanding of web performance optimization techniques.
• Knowledge of RESTful APIs and asynchronous programming.
• Ability to effectively use AI-assisted coding and research tools to

On behalf of our Client from the USA, Mobilunity is looking for a Senior Front-End Engineer.
This company specializes in developing innovative digital solutions for businesses, focusing on modular e-commerce, web performance optimization, and AI-driven retail technologies. They create flexible, API-first architectures that enhance scalability and user experience. Their expertise includes AI-powered recommendations, conversational commerce, and tailored digital experiences across various industries. With a customer-centric approach, they integrate artificial intelligence to drive efficiency and growth.

Responsibilities:

• Collaborate with cross-functional teams (including U.S.-based PMs/sales) to align technical work with client expectations.
• Lead end-to-end development of large-scale projects, including full-site rebuilds and feature enhancements.
• Collaborate with product managers and architects to design and implement scalable front-end solutions aligned with business goals.
• Write clean, reusable code with a focus on performance, testing, and maintainability.
• Optimize applications for speed, scalability, and Core Web Vitals (e.g., LCP, FID, CLS).
• Mentor junior engineers and contribute to architectural discussions around state management, caching, and deployment.
• Troubleshoot and resolve complex technical issues in collaboration with support teams.
• Maintain project documentation and track progress using Jira/Confluence.

Requirements:

• Ability to collaborate effectively with global teams, explain technical concepts to non-technical stakeholders, and participate in client-facing discussions.
• 5+ years of front-end development experience, including 2+ years in a senior role.
• Expertise in React 17+, Next.js, and modern JavaScript/TypeScript.
• Proficiency in REST API integration and performance optimization (CDNs, caching, code splitting).
• Strong knowledge of CSS preprocessors (SASS, LESS) and responsive/mobile-first design.
• Experience with server-side rendering, static site generation, and build tooling (Webpack, Babel).
• Familiarity with CI/CD pipelines, cloud platforms (AWS, Vercel), and testing frameworks.
• Solid understanding of e-commerce concepts and analytics tools (Google Analytics, GTM).
• Level of English – Upper-Intermediate and higher.

Nice to have:

• Experience with Shopify (custom apps, Hydrogen framework, OAuth flows) or other e-commerce platforms (SFCC, BigCommerce).
• Knowledge of utility-first CSS (Tailwind) and modern state management (Redux, Zustand).
• Exposure to headless CMS, composable commerce, or authentication solutions (NextAuth.js).
• Familiarity with Next.js App Router, React Server Components, or edge computing.

IT Craft is looking for a talented React Native developer to join the team working on a new part of the system – the Mobile Application.

Requirements:

• At least 4 years of commercial experience, including:
  • 2 years of experience with React;
  • 2 years of experience with React Native.
• Strong knowledge of JavaScript, TypeScript;
• Understanding of REST, WebSocket, design patterns, mobile-specific features, performance optimization, and app publishing;
• Experience with React Navigation, Redux/MobX, React Query/RTK Query/SWR, Reanimated, Gesture Handler, Victory Native;
• Good understanding of Git, Jira, Bitbucket;
• Commercial experience with Agile methodologies;
• At least an Intermediate level of English.

Will be a plus:

• Experience in native development for Android/iOS;
• Experience in writing native modules;
• Experience with Angular.

Creatio is a global vendor of an AI-native platform to automate workflows and CRM with no-code and a maximum degree of freedom. Our platform combines an AI-first architecture, composable no-code tools, and enterprise-grade governance to help organizations build and scale faster.
We’re proud to be recognized by top industry analysts as a Leader and Strong Performer in multiple Gartner and Forrester reports.
In 2025, Creatio was named to Inc.’s Best Workplaces list, recognizing our commitment to employee wellbeing and a strong workplace culture.
As a Full-Stack developer, you will be joining a Developer Experience team focused on building internal tools and services to improve productivity across engineering. Our core mission is to enhance CI/CD processes and create utilities that support development environments, code control, and team collaboration. We act as an internal enabler for dozens of product teams by simplifying infrastructure, automating workflows, and streamlining cross-team integration. Ideal candidates have experience with DevOps practices and a background in building internal tooling or automation projects that empower developers.

Responsibilities:

• Design, develop, and maintain internal tools and platforms to support environment provisioning, code delivery, and test automation.
• Optimize CI/CD pipelines and implement robust infrastructure to support rapid delivery and quality releases.
• Support automated testing systems, including NUnit, Mocha, Playwright, API, and performance tests
• Develop utilities for release rollout, hotfixes, versioning, and composable app lifecycle management.
• Act as an enabler and infrastructure partner for multiple R&D teams to streamline collaboration and reduce technical overhead.

Requirements:

• Solid background in backend development with C#/.NET 8+, ASP.NET Core, and WebAPI
• Experience with Angular, TypeScript, and modern JavaScript tooling
• Proven experience in CI/CD (Jenkins, TeamCity, MSBuild, Git etc), scripting (PowerShell/Python), and infrastructure automation (Terraform, Ansible)
• Experience with container technologies (Docker, Kubernetes, Istio)
• Understanding of DevOps culture and developer enablement practices
• Hands-on experience building and maintaining internal developer tools or platforms
• Experience with automated testing frameworks (NUnit, Mocha, Playwright, WebDriver.io)
• Familiarity with release automation and versioning systems
• Solid understanding of architectural principles (SOLID, microservices, 3-tier architecture, event bus, etc)
• Familiarity with cloud architectures

Our client is a leading provider of AI-driven dynamic pricing and revenue optimization solutions. We empower retailers and e-commerce businesses with intelligent pricing strategies that maximize profitability and competitiveness. Our platform is built on a scalable, high-performance backend architecture, enabling real-time pricing optimizations. Designed for seamless integration, it allows organizations to manage, automate, and personalize their product catalog in real-time driving efficiency, revenue growth, and data-driven decision-making.

Required skills:

• 5+ years of experience in FullStack development.
• Proficient in English.
• Hands-on experience with React and Next.js or Vue.js or Angular
• Good understanding of CSS as well as vanilla Javascript and front-end design.
• Experience with Go.
• Strong understanding of frontend and backend best practices and latest technologies.
• Good knowledge of databases, including relational, document, and NoSQL databases.
• Experience with containerization using Docker and container orchestration using K8S.
• Experience with cloud computing platforms, especially AWS.
• Experience working with large-scale systems
• Understanding of asynchronous programming, parallelism, concurrency and working with queues.
• Excellent problem-solving and analytical skills.
• Strong communication and collaboration skills.
• Ability to work independently and as part of a team.

Nice to have:

• Experience with Ruby & Python
• Experience in Agile development methodologies
• Experience with running spark jobs (Pyspark / Scala)

Scope of work:

We are seeking an experienced Senior Fullstack Developer to join our client's Core Team. In this role, you will be responsible for designing, developing, and maintaining scalable, maintainable, and high-performance applications. You will have a direct impact on managing and optimizing pricing logic as well as streamlining internal processes that empower our SaaS platform. This is an excellent opportunity for a skilled developer who thrives in a collaborative environment and wants to contribute to the foundational aspects of a state-of-the-art SaaS platform.

Responsibilities:

• Design and develop new features and applications for our platform.
• Build and maintain efficient, reusable, and reliable code.
• Collaborate with product and custom-facing teams to identify, prioritize, and execute tasks.
• Ensure the best possible performance, quality, and responsiveness of the applications.
• Continuously research and evaluate new technologies to improve our platform and keep up with the latest trends.
• Troubleshoot and debug issues reported by users
• Write clean, well-documented code and ensure proper testing and deployment.
• Participate in code reviews and contribute to the overall code quality.

Our client is the leading TV streaming platform in the US and Canada used by advertisers to manage their online campaigns across all media channels, device platforms, advertising exchange, manipulate data, and manage client’s services. The project aims to has us well-positioned to help shape the future of streaming. Continued success relies on investing in Advertising Engineering, particularly in exploring cutting-edge generative AI solutions for ad creatives. Ad Serving team are seeking a highly skilled and experienced Front-End developer to build intuitive and high-performing user interfaces for our Generative AI (GenAI) Proof of Concepts. This role will involve collaborating closely with backend engineers and product managers to create a seamless experience for advertisers leveraging cutting-edge AI capabilities.

Requirements

• 5+ years of relevant experience in web development and production application support of highly trafficked consumer-facing web applications;
• 3+ years of in-depth experience with Node.js and React and relevant toolset/framework ecosystem;
• Expert-level knowledge of JavaScript and TypeScript (including prototypical inheritance, scope, and closures);
• Well knowledge of HTML, CSS, and HTTP for the web platform;
• Strong proficiency in writing clean, robust code is a must;
• Experience of container-based orchestration, such as Docker and Kubernetes is a plus;
• Experience in infrastructure as code software tools, such as Terraform is a plus;
• Comfortable working with version-controlled code environments (e.g., Git);
• Understanding of XML, JSON, DOM, and W3C standards;
• Knowledge of the latest open standards and web technologies and how they can be used effectively;
• Being comfortable writing unit tests, component tests, e2e tests under the react umbrella. (e.g. experience in Jest, Cypress, Playwright or equivalent / related tools & frameworks is mandatory);
• Experience in Node.js/Express.js is a plus;
• Experience in state management libraries e.g. Redux, Zustand, MobX, etc. is a big plus;

Job responsibilities

• Developing the front-end apps for our products and collaborate with designers, other engineers, and product managers to build new features, iterate on current features, and build a world-class user experience;
• Building responsive and reusable UI components using modern front-end frameworks like React adhering to specifications and guidelines;
• Integration with backend RESTful APIs to consume and display data;
• Improving web performance by optimizing page load, rendering, and caching;
• Debugging and identifying page speed and performance bottlenecks using tools like Chrome Dev Tools, React Dev Tools, etc;
• Be familiar with responsive web design, common web UX patterns, and anti-patterns;
• Work comfortably with version-controlled code environments (e.g., Git);
• Decompose complex problems into manageable units of work;

Наразі у нашій компанія відкрита позиція на проект, який займається SEO просуванням сайтів)) Маємо відкриту позицію у зв'язку із розширенням команди! Будемо раді бачити фахівця, який хоче відкривати нове та розвиватися у цій ніші!

Необхідні компетенції:

• Гарні знання у CMS Wordpress, уміння розробляти шаблон з нуля, а також підтримувати існуючі.
• Досвід у розробці кастомних рішень для Wordpress, розробка плагінів.
• Впевненні знання WEB технологій.
• Розуміння життєвого циклу web додатку та його компонентів.
• Знання ООП.
• Впевненні знання PHP та JS.
• Вміння писати запити на MySQL та оптимізувати їх.
• Розробка валідної верстки HTML5, CSS3.

Буде плюсом:

• Буде плюсом знання Angular
• Розуміння патернів дизайну та архітектури (SOLID і т.д.)
• Довід роботи з web-сервером nginx, створення правил конфігурації.
• Досвід роботи з WP Multisite

У ваші обов’язки буде входити:

• Розробка нових та редагування старих шаблонів на WP
• Підтримка проектів
• Реалізація нового функціоналу, допрацювання/правки наявного функціоналу
• Пошук нових та адаптація готових рішень під необхідні вимоги
• Рефакторінг та оптимізація проектів