Jobs JavaScript / Front-End

About the Project
We are hiring for our client, who is currently scaling multiple Magento projects built from scratch using the Hyvä theme. This role is ideal for a developer experienced in launching Hyvä-based projects end-to-end. 
This is a short-term, urgent project with a possibility of extension.
 

Key Responsibilities

• Develop and maintain Magento 2 frontend solutions using the Hyvä theme
• Build projects from scratch on the latest version of Hyvä
• Collaborate within an Agile environment, working in sprints
• Provide accurate story point estimations and participate in sprint planning

• Ensure high-quality, performant, and scalable frontend solutions

   

Required Skills & Experience

• Commercial experience with Magento 2 Hyvä
• Proven experience launching Hyvä projects from scratch (must-have)
• Strong experience with:
  • Hyvä UI
  • Hyvä Checkout
  • Tailwind CSS (version 4)

• Experience working in Agile/Scrum environments (sprints, estimations, etc.)

   

Technical Requirements

• MacBook
• OrbStack

Who we are:
Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.
 

About the Product:
The product is a fast-growing online entertainment platform focused on delivering browser-based games along with real-time interactive features. It serves an expanding audience and operates under conditions of high traffic, strict latency requirements, and secure micro-transaction processing within a social gaming environment.

The platform relies on a hybrid technology stack that combines a legacy codebase built with a widely used DOM-manipulation library and modern solutions based on React and Next.js. Current challenges include transforming legacy parts into a scalable, component-based architecture, implementing real-time interactions using WebSockets, maintaining consistency across mobile devices and browsers, and integrating payment and promotion management systems.

Strong engineering ownership is key to ensuring system stability, improving performance, and enabling fast, scalable feature delivery.

About the Role:
In this role, you will take ownership of frontend feature delivery from idea to production. You will work closely with frontend leadership, backend engineers, designers, QA, and DevOps to build and evolve a complex product.

A key part of your work will be driving the transition from a jQuery-based architecture to a modern React/Next.js setup. You will be expected to make architectural decisions, improve development workflows, and ensure high standards of performance, security, and code quality.

This position requires strong independence, solid technical judgment, and the ability to work in a fast-paced, evolving environment.
 

Key Responsibilities:

• Improve and maintain existing jQuery-based interfaces
• Build scalable and responsive UI using React and Next.js
• Refactor and structure CSS/SCSS for long-term maintainability
• Ensure cross-browser compatibility and strong mobile experience
• Implement and support real-time features using WebSockets
• Apply frontend security best practices
• Contribute to the design of a reusable component architecture
• Integrate APIs and collaborate closely with backend teams
• Set up and improve build tools and performance monitoring
• Implement and manage state using Redux, MobX, or similar
• Work with designers to deliver high-quality UI
• Develop key features such as payments, authentication, and promotions
   

Required Competence and Skills:

• 6+ years of experience in frontend development on production systems
• Strong experience working with legacy codebases (jQuery)
• Solid knowledge of React (Hooks, functional components)
• Hands-on experience with Next.js (SSR, SSG, API routes)
• Strong CSS/SCSS skills and responsive design expertise
• Proficiency in JavaScript (ES6+) and TypeScript
• Experience with WebSockets and async patterns
• Understanding of performance optimization and Core Web Vitals
• Familiarity with build tools like Webpack, Vite, or Gulp
• Experience integrating REST APIs
• Strong debugging and cross-browser troubleshooting skills
• Experience with state management libraries
• Git proficiency and experience working in teams
• Strong communication skills and ability to work independently
   

Nice to Have:

• Experience introducing TypeScript into existing projects
• Basic knowledge of PHP
• Experience with testing tools (Jest, RTL, Cypress)
• Experience with animation libraries like GSAP
• Familiarity with design tools (Figma, Zeplin, etc.)
• Understanding of CI/CD processes
• Knowledge of SEO and analytics
• Experience with hybrid mobile solutions (e.g., Cordova)
   

Why Us:

• We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in). 
• We provide full accounting and legal support in all countries we operate. 
• We offer a highly competitive package with yearly performance and compensation reviews.

Panenco is a boutique software studio in Belgium and Ukraine. We build next-gen B2B SaaS products and enterprise AI solutions, always with an entrepreneurial spirit. We're a small team of the best and brightest, looking for 10x people who love to tackle challenging problems. We give you significant ownership and room to grow, expecting you to take charge and continuously evolve with the latest and greatest in our industry.
 

About the position

We’re always looking for passionate software engineers with strong computer science fundamentals to focus on front-end development with React and Typescript, creating outstanding user experiences across web & mobile. You'll become part of a dedicated product team working alongside some of the best and brightest people in our industry.
 

Technologies and required skills

You have an in-depth grasp of the the majority of the following technologies:

• Core Framework & Language
  • React: function components, hooks, composition patterns, controlled vs derived state, React Server Components (RSC)
  • Typescript: strong typing, generics, modern ES standards
  • Next.js: App Router, Server Components, Server Actions, routing concepts, SSR/SSG patterns
• API & Data Communication
  • REST: ability to interpret and interface with REST APIs
  • Type-safe APIs: understanding of end-to-end type safety concepts
• State Management
  • React Query (TanStack Query): hands-on experience with data fetching, caching, and synchronization
  • Zustand: understanding of lightweight state management patterns
  • React Context: shared state and avoiding prop drilling
• UI & Styling
  • Design systems and component libraries: shadcn/ui (primary), Radix UI, MUI, Ant, Atlassian UI
  • Styling: modern CSS with Tailwind CSS, CSS Modules, SCSS
  • Responsive layouts and cross-browser compatibility
• Forms & Validation
  • React Hook Form: form state management and validation
  • Zod: schema validation and type inference
• Testing & Quality
  • E2E testing: Playwright or Cypress
  • Understanding of test pyramid: unit, integration, and E2E testing strategies
  • CI integration: test automation in continuous integration pipelines
  • Code quality: focus on readability, maintainability, and reusability
• Build Tools & Module Bundlers:
  • Vite (widely used across our projects)
  • Webpack
  • Next.js build system: experience with Next.js build and development tooling
  • Module bundling concepts: understanding of modern bundling approaches
• Error Tracking & Observability
  • Sentry or similar tools for frontend error tracking and monitoring
  • Ability to interpret production errors and improve system reliability
• Security Fundamentals
  • Awareness of frontend security concepts: XSS, CSRF, secure handling of authentication tokens
  • Basic understanding of OWASP principles, permissions, secrets handling, and rate limiting (from a frontend perspective)
• Browser fundamentals
  • Event Loop, microtasks vs macrotasks, Web APIs (e.g. localStorage)
  • Performance: cross-browser behavior and client-side performance considerations
• Accessibility: WCAG awareness, keyboard navigation, screen readers, semantic HTML
• Language skills: solid reading and speaking skills in English
   

As a plus

• tRPC: experience with type-safe API communication and end-to-end type safety
• Turbopack: familiarity with Next.js Turbopack for faster development builds
• Virtualisation: hands-on experience with Docker and similar services
• Back-end knowledge: Node.js, Python, .NET, Next.js or other frameworks
• Cloud: practical experience with GCP, AWS or Azure
• Database: understanding of ORMs (Drizzle ORM) and database concepts
• Information security: an understanding of security standards
• React Native: experience with React Native for mobile development 
   

Locations

Remote work is our default.
We also have an office in Kyiv, and team members are expected to be available to work onsite there when needed.
 

We offer 
We offer a friendly, dynamic and inspirational working environment with a strong team that celebrates great engineering. During our bi-weekly software engineering labs sessions we share experiences from the various products that we're building. A fair compensation, office snacks and fun afterwork drinks are included of course!

The interview process

The interview process is short (but thorough) and will consist of 3 steps:

1. Technical interview: you present a personal project or one of your prior involvements from end to end, with our team asking targeted questions
2. Pair-Programming Session: you collaborate with one of our engineers on a practical task. We focus on problem-solving approach, communication, code structure, and how you reason about changes in real time.
3. Feedback: you will receive feedback about the technical conversation either in written form or through a call

As a Frontend Engineer at Wix, you’ll work on cutting-edge technologies that make a powerful impact on over 243 million users. You’ll build rich React applications with different state-management paradigms. In your day-to-day, you will:

- Tackle tough problems and find creative ways to solve them

- Write a lot of high-quality, functional Typescript and Javascript

- Work with Git, Node.js, React, Redux, MobX, and ES6+

- Manage and complete tasks using TDD, continuous integration, and modern development processes

- Invest time in personal growth and development

At Wix, we’re all about the flexibility of a hybrid setup — giving you the option to collaborate in the office when needed while also staying connected remotely.
We’re looking for Ukraine-based talents who can balance their time between in-office and remote engagement with the Wix team. This approach gives you the best of both worlds: flexibility of remote with the added benefit of in-person collaboration when it matters

Requirements

- Extensive experience in client-side development on large scales

- You’re an expert in the latest JavaScript technologies (React, Angular, Vue, etc.)

- You’re proficient in tools like Webpack, Rollup, Parcel, and Babel

- Fluent in languages like Typescript and ES6+

- You’re an independent worker, eager to learn more while sharing knowledge and best practices

- Experience in Test Driven Development (TDD) and Continuous Delivery - an advantage

Wix Kyiv’s Frontend Engineering group develops the best products in the world. Wix enables more than 200M users around the world to build an online presence and manage their business online. Our group of engineers in Kyiv is developing products at the core of the company’s focus, including our main Editor and ground-breaking Wix Studio, as well as Payments by Wix. We’re facing world-class engineering challenges that impact millions of users, and that’s why we’re obsessed with code quality, testing, performance and code reviews.

About the Guild

We are Wix’s Frontend Engineering Guild. We build unique, scalable, resilient products and technologies that empower anyone to succeed online. Our mission is to develop complex micro-frontends and maintain the highest development standards. We embrace cutting-edge technologies, TDD, and clean code. We work in small teams, follow agile work methods and use continuous integration and delivery methodologies to run quickly. We love sharing knowledge and contributing back to the open-source community.

Domaine is looking for a Senior Shopify Engineer (Hourly Contractor Position) who will be responsible for the overall technical implementation of custom Shopify theme and front end development. The ideal candidate should have several years of experience leading Shopify projects, understand Shopify best practices, and be comfortable working with the latest technologies.
 

This is a part-time contractor role with flexible availability from 10 to 40 hours/week, depending on your capacity. 

JOB RESPONSIBILITIES

• Write high quality code using Liquid, Javascript, React, Tailwind, GraphQL and other front end frameworks
• Expert knowledge and experience with the Shopify Ecommerce platform.
• Ability to work both independently and as part of a team to ensure a high level of quality.
• Strong verbal and written communication skills to accurately describe issues to clients, developers, and project managers.
• A high attention to detail to catch issues within acceptance criteria, edge cases, and other potential issues.
• High level decision making in weighing options between code quality, issues, and releasing code in a timely manner.
• Arbitration of the release process to ensure that all perspectives are heard when it comes to releasing code to production.
• Responsible for owning medium to high complexity frontend feature development and driving both completion and quality 
• Plans and delegates tasks to other engineering team members as required
• Anticipates risks and provides solutions
• Can distill complex asks to actionable solutions and tasks

CREDENTIALS & EXPERIENCE

• Strong understanding of Liquid, Javascript, React, Tailwind CSS, GraphQL, REST, Git
• Experience with Shopify development including: Themes, APIs, Apps, Functions, Extensions
• Experience working with JIRA/Confluence or other tickets management systems.
• 3-5 years of experience working in eCommerce
• Excellent organizational and problem solving skills
• Thorough knowledge and experience with front end, component driven software technology, and microservice design architecture
• Thorough understanding of user behaviors and marketing sciences in eCommerce
• Thorough understanding of the lifecycle and methodologies of software development
• Expertise in software documentation and technical writing
• Validates project estimates and approaches for entire assigned work 
• Acts as a model for junior staff
• Demonstrates high level of personal productivity

• To be able manage commitments to multiple projects
  
  PERKS & BENEFITS

   

• Flexible working schedule
• Remote-first culture

• Continued education and personal development opportunities

  
  
   

Shopify Developer (2+ years experience)

We are looking for a Shopify Developer with 2+ years of hands-on experience to join our team and help build, optimize, and scale high-performing eCommerce stores.

Responsibilities:

 • Develop and customize Shopify themes using Liquid, HTML, CSS, and JavaScript

 • Build and maintain Shopify stores, ensuring performance and responsiveness

 • Integrate third-party apps and APIs

 • Optimize store speed, UX, and conversion rates

 • Collaborate with designers and marketing team to implement new features

 • Troubleshoot and fix bugs, ensure smooth store operation

Requirements:

 • 2+ years of experience working with Shopify (custom themes, apps, storefronts)

 • Strong knowledge of Liquid, JavaScript, HTML, CSS

 • Experience with Shopify APIs and app integrations

 • Understanding of UX/UI best practices for eCommerce

 • Basic knowledge of SEO and performance optimization

 • English level: Intermediate or higher

Nice to have:

 • Experience with Shopify Plus

 • Familiarity with CRO (conversion rate optimization)

 • Experience working with headless Shopify setups

We offer:

 • Competitive salary

 • Flexible working hours

 • Remote-friendly environment

 • Opportunity to work on international eCommerce projects

Requirements

We are looking for a Front-End Developer to work on customization and extension of our EspoCRM-based system.

This is not a typical React/Vue/Angular project. You will work within an existing platform with its own frontend architecture (views, models, templates, metadata), so the ability to understand and extend existing code is critical.

Must-have

• Strong knowledge of JavaScript (ES6+)
• Solid experience with HTML5, CSS3, responsive layout
• Experience working with large existing codebases, including the ability to read, understand, and safely extend custom code
• Understanding of MVC-style or component-based frontend architecture
• Experience with dynamic UI rendering (templates, state-driven UI)
• Experience integrating frontend with REST API / AJAX / JSON
• Good debugging skills (browser dev tools, network, DOM inspection)
• Experience with Git

Nice to have

• Experience with EspoCRM
• Familiarity with Handlebars or similar templating engines
• Experience with jQuery
• Understanding of Backbone-like or custom frontend architectures
• Experience with AMD modules
• Knowledge of LESS
• Familiarity with build tools (Babel, Rollup, Grunt)
• Understanding of metadata-driven UI and dynamic form logic

Candidate profile

We are looking for a developer who is comfortable:

• working inside a custom framework instead of modern SPA frameworks
• carefully extending existing functionality without breaking it
• maintaining code quality in a large and evolving system
• balancing between speed and clean architecture

This role is best suited for someone who enjoys engineering problems, not just building UI from scratch.

Full-time schedule: Monday–Friday, 09:30–18:00 (remote work available)

Comfortable office in Kyiv (Okhtyrska St., 6a)

24PLAY is a product company from Ukraine that has been developing and publishing mobile games since 2019. We are a team of professionals who have launched dozens of popular games and gained over 100 million satisfied players worldwide. Our games include Zombiepunk, Bliezkrieg Assault, Street Dude, and more.

As a Diia City resident, we offer employee reservation starting from the first day of employment.
 

We are currently looking for a Playable Ads Developer to share our core company values:

• Creativity: We actively encourage and embrace each other’s ideas, transforming them into reality through collaboration and innovative thinking.
• Integrity: We commit to providing honest feedback and realistically assessing situations, fostering a culture of trust and transparency.
• Productivity: We strive to optimize our workflows to achieve the best possible results in the shortest timeframe, ensuring efficiency and effectiveness in our operations.
• Uncompromising Quality: Our commitment to excellence drives us to prioritize the quality of our work above all else, ensuring that we consistently deliver outstanding results.
• Healthy Lifestyle: We advocate for a healthy lifestyle and stand against harmful habits, promoting well-being and balance within our team.
   

We are looking for a professional for the role that requires:

• Full-time job;
• Office-based in Kyiv.

Main responsibilities:

• Create 2D and 3D playable ads and creatives to promote mobile games
• Develop gameplay mechanics, game logic, animations, and visual effects
  
  Nice to have:
• Experience working with MRAID and understanding of ad network technical requirements for playables
• Experience creating games on any technology/platform (Unity, Flash, etc.)
  
  Our ideal candidate:
• 0,5+ years of experience working with JavaScript
• Experience building web applications or games using 3D graphics libraries (Three.js, Babylon.js, etc.) or experience with 2D JavaScript libraries such as PixiJS or similar
• Experience with JavaScript physics libraries (Ammo.js, Cannon.js, or similar)
• Solid understanding of 2D/3D math (vectors, matrices, dot/cross product)

Why join our team?

• Fully Legal: Official employment in full compliance with Ukrainian labor legislation, including paid vacation (24 days) and sick leave (unlimited).
• Professional Team: A high-performing group of skilled individuals committed to excellence.
• No Overtime: We prioritize a healthy work-life balance, with no overtime required.
• Stable Payments: No payment delays since the foundation of the company.
• Bonus System: A unique reward system designed to motivate employees by aligning their performance with the company’s financial goals.
• Professional Development: Access to mentorship programs and our internal library for continuous growth.
• Events: Enjoy board games, masterclasses, corporate events, sports activities, and free English classes.
• Comfortable Workspace: A modern office in Kyiv featuring a spacious lounge, fully-equipped kitchen, sports zone, cinema, and complimentary spa facilities for employees.
• 35-Hour Work Week: Reduced working hours as a benefit for experienced employees.

About the role

We are looking for an AI Agent Engineer to join us on a long-term basis and help build, configure, and support AI-driven automation systems.

You will work with an enterprise AI orchestration platform (Airia, onboarding provided), configuring AI agents, integrating them with HubSpot and other tools, and extending the platform with custom scripts when needed.

This is not a classic full-stack development role. Most of your work will focus on:

• building and configuring AI agents
• connecting different systems together
• creating integrations and automations
• writing small custom scripts for edge cases

You’ll work closely with our team and receive architecture guidance and code reviews when needed.

Responsibilities

• Build AI agents for lead qualification, research, lead scoring, and reporting
• Integrate the orchestration platform with HubSpot via MCP
• Configure HubSpot pipelines, lifecycle stages, workflows, and automations
• Integrate outbound tools such as Apollo, A-Leads, Instantly, Smartlead, Outreach, Mailchimp, or Intercom
• Set up field mapping, contact sync, workflow triggers, and bidirectional data sync
• Build integrations with external systems (CRM, ERP, communication tools)
• Write custom scripts and data transformations in Python or JavaScript/TypeScript
• Handle APIs, webhooks, OAuth, rate limits, retries, and error handling

• Prepare SOPs, documentation, and support go-live/testing
   

  Requirements

• 2+ years of experience building AI agents, LLM workflows, or automation pipelines
• Experience with one or more platforms: LangChain, LangGraph, n8n, CrewAI, AutoGen, Make, Zapier AI, Relevance AI, Vellum, or similar
• Experience with MCP, tool calling, or similar integrations between AI agents and external systems
• Hands-on experience with HubSpot CRM (pipelines, workflows, API integrations, webhooks, field mapping)
• Experience integrating CRM systems with outbound or lead generation tools
• Good understanding of REST APIs, OAuth, webhooks, rate limits, and error handling
• Ability to write custom integration logic in Python or JavaScript/TypeScript

• Strong written English and ability to work independently

   

  Nice to have

• Experience with Airia or multi-agent systems
• Knowledge of GDPR, HIPAA, ISO 42001, EU AI Act, or NIST AI RMF

• Background in an AI agency, MSP, or integration company

   

  Tech Stack

• AI orchestration: Airia, LangChain, LangGraph, n8n, CrewAI
• CRM: HubSpot or similar CRM platforms such as Salesforce, Pipedrive, Zoho CRM, Microsoft Dynamics 365, HighLevel
• Integrations: Apollo.io, Instantly, Smartlead, Outreach, Mailchimp, Intercom
• Languages: Python, JavaScript, TypeScript

• APIs & Infrastructure: REST API, MCP, OAuth, Webhooks

   

  We offer

• Long-term cooperation
• Flexible workload
• Direct impact on technical decisions
• Work on real AI products and client integrations
• Support and mentorship from senior engineers

Requirements:

• 1+ years of experience in development
• Strong knowledge of Javascript and TypeScript
• Strong knowledge of Angular
• Strong analytical and problem-solving skills
• Experience working with RxJS ,NgRx ,signals, and new angular syntax template
• Confident AI prompting, understanding of LLM principles (Context window, RAG, System prompts)
• Experience working with AI coding assistants (Cursor, Claude Code, GitHub Copilot)
• Good understanding of asynchronous and reactive programming
• Confident working with the Git version control system
• Understanding of GraphQL
• Intermediate level of English

Would be a plus:

• Experience working with React
• Experience working with Websockets
• Experience building large-scale SaaS platforms supporting millions of users.

Responsibilities:

• Build features and systems with attention to detail and performance.
• Own end-to-end development, from conception to production.
• Engineer not only solutions but also tools to understand the problem.
• Work closely with cross-functional stakeholders to deliver a world-class product.
• Identify and implement improvements to our existing systems.

About the project:

Project management platform. With the help of own API, it’s possible to do multiple integrations with communication, sales, analytics and other applications that are used by co-workers on a daily basis.

We are looking for a frontend engineer to improve the beautifully crafted product that helps millions of people to enjoy their remote work! You will be responsible to deliver production-ready functionality in a cross-functional team and will be able to reach millions of people with your best effort and working time as part of a multinational team of highly skilled developers.

Хелоу, люба спільнота 👋 

Ми продовжуємо комплектувати US Healthcare українцями в найкращих традиціях аутстафінгу.

Це наш постіний клієнт – велика MarTech агенція, що спеціалізується на data-driven marketing. 
В цій тімі вже працюють декілька наших співробітників, та репортять, що працювати приємно, бо люди найс та немає агентської срачки – work/life balance – сюди.

Особливості пропозиції:
- Second Shift – робочі часи: 9 - 17 (EST), тобто це 16 – 00 по Київу. Ви повинні бути впевнені, що вам це підійде.

- Good Verbal English (Strong С1) – майже вся тіма американська, тому ви повинні спілкуватись вільно.
 

ІМХО, роль цікава якщо:

• Хочеш стабільний remote із реальним американським клієнтом
• Тобі близький agency-ритм — швидко, чітко, без нудьги
• Ти вже бачив як рендерить Outlook 2016 і вижив

Не зайде, якщо потрібна рука, яка тебе веде — тут очікують самостійність і проактивність. На цьому передаю слово англійській, бо далі конкретика.

What you'll do

• Build and maintain HTML emails, display banners, and landing pages across concurrent client campaigns
• Own responsive landing page builds from markup through cross-browser QA
• Translate creative briefs into clean front end builds in direct collaboration with PMs
• Manage your own workload, flag blockers early, and hit deadlines consistently
• QA your own work across devices, browsers, and email clients before handoff
• Contribute to reusable component libraries and email templates
   

Requirements

• 3–5 years of front end experience, ideally in an agency or client services environment
• Strong HTML email skills — cross-client rendering quirks, fallbacks, accessibility
• Proficiency in HTML/CSS; experience building responsive static and animated display banners
• Git proficiency; working knowledge of Docker for local dev
• macOS as primary environment
• Clear, proactive communication — you keep PMs in the loop without being chased

Nice to have

• Veeva Vault PromoMats / Veeva CRM experience (MLR-compliant workflows)
• JavaScript for banner animation or lightweight interactivity
• Background in healthcare, pharma, or regulated industries

AI

The team uses AI tools — and uses them well. But we still hire for solid fundamentals. If you need AI to explain what a table-based email layout is, this probably isn't the right fit. If you use it to move faster on things you already understand — we'll get along just fine.

Other

• 20 paid day-offs per year.
• US holidays.
• Opportunity to grow and claim new responsibilities in competitive modern environment.
   

______
Отака роль.

Буду радий вас почитати та побачити – пишіть.
\0/

Job Description

- 6+ years of relevant commercial experience as a frontend engineer.

- Deep expertise in the Chrome Extension API (permissions, declarativeNetRequest, messaging, storage). 

- Experience bypassing anti-scraping measures or handling highly obfuscated DOM structures. Familiarity with Shadow DOM and its impact on style isolation and scraping.

- Proven experience migrating or building under Manifest V3 architecture.

- Mastery of React for building extension-specific UIs (Sidepanels, Action Popups).

- Strong knowledge of Content Security Policy (CSP) and cross-origin resource sharing (CORS) in an extension context.

- Experience with TypeScript to ensure type safety across different extension environments.

- Expert-level understanding of DOM manipulation and scraping of asynchronous, "heavy" web apps. Knowledge of browser performance profiling to ensure the extension doesn't slow down the user's browser. Understanding of how to secure sensitive data within local extension storage.

- Proven experience contributing to mature Chrome extension projects maintained by multiple R&D teams, with complex shared codebases.

- Experience developing or maintaining automation and performance testing tools to monitor extension impact at scale, detect regressions, and ensure minimal disruption to end users.

Job Responsibilities

Our Chrome/Edge extension is a core part of the clinician's daily workflow. It lives alongside Electronic Health Record (EHR) systems, capturing data and providing real-time AI suggestions. We need a high-level specialist to lead the development of this extension, ensuring it remains robust against external site changes and maintains strict medical-grade security. Part of your responsibilities will include, but not limited to:

- Lead the architecture and development of our browser extensions using Manifest V3.

- Build sophisticated content scripts that reliably scrape and interact with dynamic EHR platforms.

- Manage complex background logic using Service Workers for session lifecycle management.

- Ensure the extension’s React-based UI (popups and overlays) is high-performance and non-intrusive.

- Implement secure, cross-context messaging between content scripts, service workers, and the main web app.

- Develop robust "DOM observers" to handle updates on third-party sites without breaking functionality.

- Collaborate effectively with multiple R&D teams on large, mature extension projects, contributing to a shared, scalable codebase.

- Design, implement, and maintain automation frameworks to continuously monitor extension performance, detect regressions, and measure the impact on browsers and external systems.

- Establish best practices for performance, security, and maintainability in large-scale, multi-team extension projects.

Department/Project Description

We are redefining the standard of care in mental health. Our platform empowers clinicians by automating administrative burdens—such as note-taking and compliance auditing—using cutting-edge AI and real-time audio analysis. By bridging the gap between clinical sessions and actionable data, we allow providers to focus on what matters most: the patient.

Requirements: 


-5+ years of experience in JavaScript game development
- Strong knowledge of HTML5, Canvas API, and DOM manipulation
-Proven track record in creating HTML5 games
-Advanced proficiency in JavaScript (ES6+), including async/await, modules, closures, and classes
-Experience with popular libraries/frameworks such as Phaser, Pixi and Three.js
-Solid understanding of object-oriented programming and expertise in performance optimization algorithms, memory management, and threading
-Experience integrating and optimizing Spine animations in game engines
-Experience with slots
-experience in leading and mentoring front-end development teams.
-strategic, structured and analytical thinking.
-strong collaboration and communication skills.


Responsibilities:

-Manage front-end developers team, and perform code reviews;
-Write clean, efficient, testable, and scalable code;
-Collaborate closely with the team to identify and prioritize areas for enhancement;
-Take part in the full development cycle and ensure smooth development and cooperation between the dev team and product owners
- Hands-on experience with AI tools as part of everyday work is a must


Nice to Have:

+ Experience optimizing HTML5 games for mobile browser performance
+ Understanding of CI/CD


Work conditions:

— Flexible working hours and the freedom to work remotely;
— Paid vacation of 20 workdays/year and 5 workdays/year for sick leaves;
— Unlimited unpaid day-offs to take care of personal matters;
— A range of paid benefits to choose from;
— Personal development plan to support your growth
— Skills training to sharpen your expertise;
— Education office featuring internal and external experts and mentorship programs;
— Structured processes through our corporate confluence;
— Open-minded management style with transparent communication of company strategy and plans;
— Performance-based reviews to recognize and reward your contributions;
— Stress management initiatives, including 1-1 meetings and a feedback culture;
— Engaging in corporate team-building events, marathons, and online challenges;
— Family-friendly policies, including special congratulatory gifts for personal milestones like the birth of a child or a wedding.

If you are an ambitious and enthusiastic professional, always eager to learn and achieve the best results, Twin Win Games is the place for you! We offer ample opportunities for personal development and professional growth. Join us as we continue to create innovative and exciting gaming experiences.
 

Responsibilities and Duties:

● Designing and developing responsive user interfaces using React.
● Implementing and maintaining TDD in applications and continuous integration.
● Collaborating with a cross-functional team of project managers, project analysts, and sales staff to
deliver high-quality, interactive products on time.
● Driving best practices in testing, accessibility, and performance optimization.
● Collaborating cross-functionally with design, backend, QA, and product teams to deliver robust and
user-centric solutions.

Requirements:

● 6+ years of experience in JavaScript and TypeScript development.
● Should understand design patterns and their application to JavaScript development.
● Must know a modern front-end JS framework, such as React.js + Redux. Next.js is a bonus.
● Knows functional programming paradigms.
● Understands asynchronous programming paradigms and best practices.
● Git and branch management knowledge.
● Experience in debugging front-end problems and a knowledge of front-end debugging tools.
● Familiarity with custom package creation and integration.
● Should understand OO concepts and their application to JavaScript.
● Ability to work under pressure and deliver against tight deadlines.
● Hands-on experience with HTML5 and CSS3.
● Experience with Agile methodologies and development practices.
● Good communication skills and good organization skills.
● Proficiency in writing cross-browser compatible code.
● Bachelor’s degree in Computer Science or equivalent - preferred.

Vacancy: Frontend Developer (Freelance, Full-time)
Location: Remote (aligned with CET business hours)
Employment Type: Full-time, Freelance, Remote 

Are you a proactive Frontend Developer with a sharp eye for detail and a passion for building smooth, scalable interfaces? We’re looking for someone with at least 3 years of experience, strong communication skills, and the ability to take ownership of projects that drive real impact.

What You’ll Do:

• Write clean, scalable, and maintainable frontend code
• Collaborate with designers and backend developers to deliver high-quality features
• Build and optimize modern, responsive interfaces with performance in mind
• Communicate effectively across teams and contribute to clear development workflows
• Translate product and business needs into smart, usable frontend solutions
   

Your Skillset: 
Core: 

• JavaScript / TypeScript
• React (Redux, Hooks, React Query, React Router)
• Vite
• Axios
• Yarn
   

Design & UX:

• Strong understanding of UI/UX principles
• Experience working closely with designers to implement pixel-perfect designs
• MUI (Material UI) – nice to have
   

NIce to have: 

• Experience with Node.js (v18–20)
• Familiarity with Agile development methodologies
• Experience working in a fast-paced, remote environment
• Good communication skills and fluent in English

What We Value:

• Proactive mindset and ownership over your work
• Strong collaboration and communication skills
• Eye for detail, performance, and usability