Вакансии React Developer

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.

We are looking for a motivated, self-driven, and positive individual with strong communication skills to join our team in the project in the Logistics domain.
If you are passionate about your work and strive to solve challenging tasks, we would be happy to have you join our team.

Customer

Headquartered in Germany, the company is one of Europe’s leading logistics providers. The company specializes in developing and implementing integrated supply chain systems, and focuses on using data to optimize logistics operations.

Requirements

• At least 3 years of commercial experience in development with a focus on the TypeScript and/or JavaScript technology stacks
• Proven experience with Node.js, ReactJS, REST API, Material UI, GraphQL, and MongoDB
• Quick understanding of existing digital products and architectures, even with limited documentation. Ability to analyze architecture, data flows, and user interactions
• Strong analytical thinking and technical judgment in assessing what to refactor, what to rebuild, and how to modernize solutions effectively
• Experience with Scrum methodology
• Experience with Azure
• Fluent in English

Would be a plus

• Experience with integrating and working with design systems (Tailwind and/or Storybook)
• Experience with Docker and/or Kubernetes

Personal Profile

• Strong communication skills
• Strong multitasking skills
• Strong problem-solving and decision-making abilities, with a focus on driving results and meeting deadlines

Responsibilities

• Design, develop, and maintain robust software applications using ReactJS, Tailwind CSS, Node.js, TypeScript
• Create new functionality from scratch (e.g., role-based access control permissions service, service for integrating APIs, endpoints) under the supervision of Senior developers
• Collaborate with stakeholders to define, design, and ship new features

We are looking for a skilled and proactive Middle .NET Developer to join our team and play a key role in the modernization of our application platform. The primary focus of this role will be to support the migration of the UI layer from Angular to React, while maintaining and extending backend functionality developed with .NET Core 8. The ideal candidate will have hands-on experience in both frontend and backend technologies, a solid understanding of modern web application architecture, and a mindset geared toward clean, maintainable code.
As part of a cross-functional team, you will collaborate with other developers, designers, and stakeholders to refactor legacy components, ensure platform consistency, and contribute to the technical evolution of the product.
Project duration: 6 months

Customer

ConnectWise is the world’s leading software company dedicated to the success of IT solution providers. Their vision is to power a thriving IT ecosystem that transforms what’s possible for small and medium sized businesses (SMBs) and do this by empowering IT solution providers with unmatched software, services, and community to achieve their most ambitious vision of success. The tools being developed are used by IT service providers to automate their activities for SMBs, such as backup and restore, providing security, and performing administrative tasks on Microsoft 365 tenants.

Project

The project relates to a SaaS platform currently undergoing a frontend transformation from Angular to React.
The goal is to modernize the user interface, improve performance, and enhance maintainability while preserving core functionality.

Requirements

• At least 2 years of commercial experience in .NET development
• Solid experience with .NET Core 8, including developing and maintaining backend APIs in a microservices architecture
• Proficient in modern frontend development, with strong knowledge of React, including hands-on experience migrating components between frameworks. Experience in Angular as well is a big plus
• Understanding of UI/UX principles and frontend architecture, enabling effective refactoring and redesign during the migration process
• Familiarity with TypeScript, state management, and component-based design, ensuring maintainable and scalable frontend code
• Ability to identify reusable logic and collaborate with backend developers to align on platform modernization goals
• At least Upper-Intermediate level of English

Personal Profile

• Excellent communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams and stakeholders
• Strong problem-solving and decision-making skills, with a focus on driving results and meeting deadlines
• Self-motivated, adaptable, and eager to learn new technologies and frameworks

Responsibilities

• Participate in the migration of the application’s frontend from Angular to React, ensuring consistency, performance, and usability
• Collaborate with frontend and backend developers to refactor and integrate existing components into the new React-based platform
• Develop and maintain .NET Core 8 backend APIs and services to support evolving UI functionality
• Analyze and work with existing code to identify reusable logic and areas for improvement
• Write clean, maintainable, and testable code following best practices and team standards
• Participate in code reviews, knowledge sharing, and ongoing improvements to development workflows
• Work closely with QA, UI/UX designers, and product stakeholders to ensure feature completeness and quality

Our team is growing and we’re looking for talented Node.js developers. You will work in a dynamic environment, having the chance to impact the product aspects using multiple scalable, reliable platforms with several products. We are looking for developers with hands-on back-end and front-end experience that feel comfortable working in agile process and adhere self learning.
Our customer is a rapidly growing startup from Tel Aviv, that is building an ultimate Vacation Rental Platform to support services for Airbnb, Booking.com, Agoda, TripAdvisor, Expedia and other property providers at vacation rental market.
The platform is developed using the latest technologies and frameworks, Node.js, Mongo, RabbitMQ, and Redis on the server side, and React, Redux on the client side. We promote continuous learning and are open to learning and implementing new things all the time
If you are looking for an interesting product and enjoy being challenged, this is your place.
This position is 90% FE and 10% BE (although strong backend knowledge is needed!)

What you will do

• Implement cool new features, services, and APIs
• Write reusable code and libraries
• Optimize the application for maximum speed and scalability
• Implement security and data protection
• Write tests and metrics monitoring modules
• Ready to work with on-call duties

What you need for this

• Proficiency in JavaScript and TypeScript, at least 5 years of professional experience with web-enabled commercial application development (70% FE, 30% BE in the past experience)
• Solid experience working with NodeJS (ExpressJS)
• Experience with ReactJS / Redux
• Experience with unit/integration tests using: jest, mocha, nock, chai, sinon
• Experience with Microservices Architecture and message brokers
• Experience with REST.
• Experience with the development of microservices communication via queues (RabbitMQ, ActiveMQ, Kafka)
• Experience with NoSQL databases (e.g., MongoDB, Redis).
• Have a great product sense and software design sense; excellent technical judgment and architecture experience
• Passionate about technology, enjoys solving complex problems, and learning new technologies.
• A team player with strong communication skills
• Upper-intermediate, advanced written and spoken English

Місія нашого партнера – прискорити впровадження відновлюваної енергії по всій Європі шляхом поєднання технологій, інновацій та глибокої експертизи в енергетичному секторі. Мета – забезпечити більш ефективний, прозорий і масштабований енергетичний перехід.
Для досягнення цього необхідно створити інтелектуальні платформи, що об'єднують ключових учасників енергетичної екосистеми – сприяючи співпраці та забезпечуючи потужну технічну, комерційну й фінансову синергію на шляху до сталого розвитку.

Твоя команда

Ти станеш цінним членом нашої команди розробників, приєднавшись до групи інноваційних і захоплених своєю справою професіоналів, які займаються створенням важливих бізнес-інструментів. Проєкт наразі знаходиться на етапі Discovery, тож ти матимеш унікальну можливість долучитися до його розробки з самого початку, працюючи пліч-о-пліч із талановитими Project Manager, Front-end and Back-end Engineers, QA Engineer, DevOps Engineer.

Твої обов’язки

• Проєктування, розробка та підтримка застосунку, забезпечення високої продуктивності і швидкості відгуку.
• Участь в обговоренні та побудові архітектури проєкту.
• Впровадження масштабованих backend API та інтеграція їх із frontend компонентами для створення безперебійної роботи користувача.
• Оптимізація бази даних та забезпечення масштабованості, продуктивності для безпечної та ефективної обробки даних.
• Розробка та підтримка стратегії розгортання у хмарі, використання інструментів для автоматизації та моніторингу.
• Усунення технічних проблем та вирішення викликів для стабільності й безпеки застосунку.
• Участь в Agile спринтах, проведення код-рев'ю та надання технічної інформації для ітеративної розробки.
• Участь у регулярних бізнес-поїздках за кордон.

Це про тебе

• Маєш 4+ роки досвіду в розробці програмного забезпечення.
• Маєш досвід розробки застосунків використовуючи Node.js та React.js.
• Маєш досвід у побудові архітектури та роботи з високонавантаженими системами.
• Володієш системами контролю версій (Git) і методологіями Agile.
• Володієш знаннями реляційних баз даних, зокрема PostgreSQL.
• Маєш досвід роботи з хмарними сервісами, такими як AWS, включаючи розгортання та CI/CD конвеєри.
• Досвідчений у роботі з API, інтеграцією сторонніх сервісів і рольовим контролем доступу (RBAC).
• Маєш сильні навички розв'язання проблем і досвід роботи в міжфункціональних командах.
• Розумієш найкращі практики безпеки, включаючи протоколи автентифікації, такі як OAuth і JWT.
• Володієш англійською мовою на рівні Upper-Intermediate або вище.

Місія нашого партнера – прискорити впровадження відновлюваної енергії по всій Європі шляхом поєднання технологій, інновацій та глибокої експертизи в енергетичному секторі. Мета – забезпечити більш ефективний, прозорий і масштабований енергетичний перехід.
Для досягнення цього необхідно створити інтелектуальні платформи, що об'єднують ключових учасників енергетичної екосистеми – сприяючи співпраці та забезпечуючи потужну технічну, комерційну й фінансову синергію на шляху до сталого розвитку.

Твоя команда

Ти станеш цінним членом нашої команди розробників, приєднавшись до групи інноваційних і захоплених своєю справою професіоналів, які займаються створенням важливих бізнес-інструментів. Проєкт наразі знаходиться на етапі Discovery, тож ти матимеш унікальну можливість долучитися до його розробки з самого початку, працюючи пліч-о-пліч із талановитими Project Manager, Front-end and Back-end Engineers, QA Engineer, DevOps Engineer.

Твої обов’язки

• Менеджмент команди з інженерії та встановлення найкращих практик для розробки програмного забезпечення.
• Проєктування, розробка та підтримка застосунку, забезпечуючи високу продуктивність і швидкість відгуку.
• Впровадження масштабованих backend API та інтеграція їх із frontend компонентами для створення безперебійної роботи користувача.
• Оптимізація бази даних та забезпечення масштабованості, продуктивності для безпечної та ефективної обробки даних.
• Розробка та підтримка стратегії розгортання у хмарі, використання інструментів для автоматизації та моніторингу.
• Усунення технічних проблем та вирішення викликів для стабільності й безпеки застосунку.
• Участь в Agile спринтах, проведення код-рев'ю та надання технічної інформації для ітеративної розробки.

Це про тебе

• Маєш 6+ років досвіду в розробці програмного забезпечення.
• Маєш 2+ років досвіду в управлінні командою.
• Маєш досвід розробки застосунків використовуючи React.js та Node.js.
• Володієш системами контролю версій (Git) і методологіями Agile.
• Володієш знаннями реляційних баз даних, зокрема PostgreSQL.
• Маєш досвід роботи з хмарними сервісами, такими як AWS, включаючи розгортання та CI/CD конвеєри.
• Знайомий з API, інтеграцією сторонніх сервісів і рольовим контролем доступу (RBAC).
• Маєш сильні навички розв'язання проблем і досвід роботи в міжфункціональних командах.
• Розумієш найкращі практики безпеки, включаючи протоколи автентифікації, такі як OAuth і JWT.
• Вільно володієш англійською мовою на рівні Upper-Intermediate або вище.

Binariks is looking for a highly motivated and skilled Senior Fullstack Engineer to join Support team (shifted working hours till 1 AM Kyiv time).
Our project – a EHR platform is in the healthcare domain which gives the opportunity to manage appointments, communication between doctors and patients, billing, insurance, etc. The client is a leader in the behavioural health industry.

What We’re Looking For:

• A full stack engineer (.Net+React) with 5+ years of experience.
• Hands-on experience with Azure Cloud.
• Excellent communication and teamwork skills.
• Ability to work autonomously, take responsibility for full-stack development.
• Shifted working hours till 1 AM Kyiv time
• At least an Upper-Intermediate level of English

Your Responsibilities:

• Provide technical support
• Troubleshoot issues, and deliver timely resolutions.
• Perform regular maintenance tasks, including updates, patches, and bug fixes.
• Collaborate with developers and other teams to understand the root causes of issues and implement effective solutions.
• Monitor application performance, identify bottlenecks, and optimize system resources.
• Document and maintain knowledge base articles and support documentation.
• Ensure compliance with security standards and best practices in application support.
• Participate in on-call rotation for after-hours support as needed.
• Assist in the testing of new features and updates to ensure they meet quality standards.
• Communicate effectively with end-users and stakeholders to provide status updates and gather feedback.

We’re opening the position of a Senior Software Developer to work with our Client – a leading energy SaaS company delivering highly technical insights and predictive/prescriptive analytics that empower customers to make decisions that increase profit.
​You would be joining the Front-End Chapter of the team developing our premier energy analytics platform.

Responsibilities:

• Rapidly prototype new features in a React-based web application
• Influence design and user experience of single-page applications
• Perform full-stack development and maintenance of our platform services built with Node.js, React, and Kubernetes
• Create and maintain microservices backed by document-based databases and GPU accelerated databases
• Contribute to scoping, estimating, and planning projects
• Debug, investigate, and resolve bugs and customer issues
• Write unit, integration, and end-to-end tests
• Lead code reviews, API design reviews, or technical reviews of the products
• Stay up to date on industry trends through self-study, research, and online courses
• Mentor junior team members

Requirements:

• 5+ years of software development experience building web applications with React and Node.js
• Extensive experience with modern web application development tools and libraries
• Multiple years of experience writing modern applications in JavaScript (ES2015 and later)
• Knowledge and experience with one JavaScript-based bundler (we use webpack)
• Solid understanding of proper use and design of a microservices architecture
• Understanding of the fundamental design principles behind building secure and scalable applications
• Experience working within a continuous integration and deployment (CI/CD) environment
• Familiarity with OOP and Agile methodologies
• Ability to manage source code effectively using Git (we use GitHub)
• Excellent understanding of data structure and algorithms
• Excellent communication and cross-functional collaboration skills
• English level – Upper-Intermediate or higher

Will be a plus:

• Hands-on experience with Jest and/or React Testing Library
• Experience in data visualization, using Mapbox, D3, or other JavaScript-based libraries
• Familiarity with Docker and Kubernetes
• Familiarity with MongoDB and PostgreSQL
• Familiarity with Git (or an equivalent)
• Familiarity with Azure Cloud services (or an equivalent)
• Understanding of CI/CD
• Experience working in a Nix-like environment (Linux, OSX, Windows WSL2)

Our team is growing and we’re looking for talented Node.js developers. You will work in a dynamic environment, having the chance to impact the product aspects using multiple scalable, reliable platforms with several products. We are looking for developers with hands-on back-end and front-end experience that feel comfortable working in agile process and adhere self learning.
Our customer is a rapidly growing startup from Tel Aviv, that is building an ultimate Vacation Rental Platform to support services for Airbnb, Booking.com, Agoda, TripAdvisor, Expedia and other property providers at vacation rental market.
The platform is developed using the latest technologies and frameworks, Node.js, Mongo, RabbitMQ, and Redis on the server side, and React, Redux on the client side. We promote continuous learning and are open to learning and implementing new things all the time.
If you are looking for an interesting product and enjoy being challenged, this is your place.
This position is 90% FE and 10% BE (although strong backend knowledge is needed!)

What you will do

• Implement cool new features, services, and APIs.
• Write reusable code and libraries.
• Optimize the application for maximum speed and scalability.
• Implement security and data protection.
• Write tests and metrics monitoring modules.
• Ready to work with on-call duties.

What you need for this

• Proficiency in JavaScript and TypeScript, at least 5 years of professional experience with web-enabled commercial application development (50% FE, 50% BE in the past experience).
• Solid experience working with NodeJS (ExpressJS).
• Experience with ReactJS. / Redux.
• Experience with unit/integration tests using: jest, mocha, nock, chai, sinon.
• Experience with Microservices Architecture and message brokers.
• Experience with REST.
• Experience with the development of microservices communication via queues (RabbitMQ, ActiveMQ, Kafka).
• Experience with NoSQL databases (e.g., MongoDB, Redis).
• Have a great product sense and software design sense; excellent technical judgment and architecture experience.
• Passionate about technology, enjoys solving complex problems, and learning new technologies.
• A team player with strong communication skills.
• Upper-intermediate, advanced written and spoken English.