Senior React Engineer

N-iX is looking for a Senior React Engineer to join its Ukraine-based team. The team builds a platform that connects savers to high-yield savings accounts and investment products from over 400 partner banks worldwide. This marketplace aims to make saving more transparent and convenient, offering competitive rates for users and cost-effective deposit funding for banks. Technology Stack Backend: Java (Spring Boot), MySQL, Kafka, AWS Web: TypeScript, ReactJS Mobile: TypeScript, React Native What you will do Develop and maintain customer-facing platforms and internal tools, with a focus on strong user experiences. Lead application and service development from initial design through deployment and ongoing improvement. Own feature delivery throughout its lifecycle, from discovery and implementation to testing, iteration, and launch. Write secure, maintainable, and well-tested code, including unit, integration, component, and contract tests as needed. Collaborate with Product, UX, Risk, and other teams to turn complex requirements into practical, secure solutions. Contribute to architectural discussions and help define technical standards and best practices. Work to improve engineering processes, CI/CD pipelines, automation, and operational readiness. Participate fully in an agile, cross-functional team, taking responsibility for end-to-end delivery. Use AI tools thoughtfully to accelerate delivery and improve code quality. Foster a collaborative team culture by sharing knowledge, offering feedback, mentoring, and pairing. Support open communication and continuous improvement, focusing on both personal and team growth.

Role overview Miratech seeks a Senior Frontend Engineer in Kyiv with deep experience in React and design systems. The position centers on building scalable, user-focused web applications and strengthening design systems to ensure consistency throughout Miratech’s products. What you will do Collaborate with cross-functional teams to launch new features and refine existing ones Develop and maintain applications using React Enhance design systems to create a unified user experience across products Support projects at every stage, from initial concept to final implementation Location This is an on-site role based in Kyiv.

Design, develop, deploy, and manage over 130 modules and multiple applications daily.Enhance your skills by taking a hands-on approach to tackle complex challenges.Elevate standards and spearhead technological advancements to ensure AUTO1 remains at the forefront of innovation.Collaborate closely with diverse product and development teams to bring new, cutting-edge features to fruition. You will have opportunities to explore various technologies and areas of software development.

ELEKS seeks a Middle Strong or Senior Full-Stack Developer skilled in .Net and React. This remote role is open to professionals based in Ukraine. Project Details Join a team building a large-scale Human Resources System funded by the US Government. The platform is designed to support several ministries in a Middle Eastern country, with the goal of streamlining human resource management across various departments. Key Focus Develop and maintain features using .Net and React Contribute to a project impacting government-level HR processes Collaborate with an international team on a long-term initiative Location This position is fully remote for candidates residing in Ukraine.

nix seeks a Senior Frontend Engineer to help build web applications that use AI and machine learning. The team develops platforms that streamline workflows such as content generation, validation, analysis, and transformation. Role overview This role centers on designing and maintaining frontend features for AI-powered platforms. The work involves creating interfaces that make it easier for users to interact with advanced AI tools. What you will do Develop and maintain frontend features for platforms that use AI and machine learning Design user interfaces that simplify interaction with complex AI tools Collaborate with engineers and product teams to deliver scalable, intuitive, and user-friendly web experiences Location This position is based in Ukraine.

At Restream, we are searching for a skilled Senior Frontend Engineer to join our dynamic team in tackling complex challenges and creating top-tier products. In this pivotal role, you will be instrumental in developing new features, enhancing the user interface of our platform, and ensuring the reliability of our systems as we expand. You will work closely with a talented group of Engineers, driving processes and improving user-facing features. Your understanding of simplicity and reliability will guide your decisions, as each choice you make carries significant impact. We value small teams where every member plays a crucial role.Your ResponsibilitiesCreate visually appealing interfaces and interactions within Restream’s web services.Design and implement the UI and business logic required to support both new and existing features.Collaborate with product designers to develop exceptional and user-friendly UI/UX.Engage in code reviews, providing and receiving constructive feedback with the team.Stay abreast of emerging technologies and uncover potential opportunities within our environment.Desired QualificationsA proactive, entrepreneurial mindset that drives high-quality project delivery.Solid design sensibility, meticulous attention to detail, and a commitment to delivering an outstanding user experience.Proficient in JavaScript, TypeScript, and the latest ECMAScript specifications (experience with additional programming languages is advantageous).Deep expertise in React and its primary state management systems.Experience with CSS preprocessors such as LESS or SASS.Basic backend competencies: Node.JS, REST API development, and familiarity with relational or NoSQL databases.Comfortable with TypeScript, MobX, AWS, Linux, Docker, Kubernetes, and continuous deployment workflows.Strong verbal and written communication skills.Self-motivated, analytical, and effective within a team setting.Founded in 2015, Restream emerged from Ukraine with a passion for empowering creators to be seen and heard. As the leading multistreaming solution, we inspire over 10 million creators worldwide.

N-iX is seeking a Senior Mobile/Web Engineer to join our dynamic team. The Backoffice Support Team (BST) is responsible for the tools and systems utilized by our internal back-office teams, including Customer Service and Operations. This team is dedicated to the development, maintenance, and ongoing enhancement of internal support platforms and workflows. Key responsibilities include:● Managing Zendesk, our primary ticketing system● Overseeing Postbox, the internal customer communication platform● Developing custom integrations with core systems and other internal servicesOur BST is critical in driving operational efficiency, ensuring that internal users have access to reliable, scalable, and well-integrated tools for effective customer and partner interactions.

Join our innovative technology team at Kyivstar as a Frontend Developer specializing in React! We are seeking a creative and enthusiastic developer to help design and build user-friendly applications that enhance the experience of our customers. This is a unique opportunity to work with a talented team in a dynamic environment where your ideas and contributions will directly impact our projects.

Hello! We are Brainstack, a dynamic multi-product IT company based in Ukraine.If you are looking for a space where you can continuously scale your skills and enjoy tackling challenging tasks, then you’ve come to the right place. Here, you will find opportunities that will help you realize your ambitions, create profitable businesses without illusions, and transform ideas into successful IT products. Our team will always support you and never leave you alone with challenges.Our portfolio includes mobile and web applications and services with a million-strong audience, covering various niches: Health & Wellness, Mental Health, Astrology, AI, Utilities, Parental Control. We are also developing our own R&D center.We are seeking a Frontend Developer to join our experienced Mobile Studio team.About the Role:You will be responsible for creating fast, stable, and scalable web and mobile interfaces that implement the product's business logic and enhance user experience. Your work will help us quickly test and launch new solutions, including integrations with AI and analytical systems.What the Team Does:We maintain existing products and regularly create new applications from scratch, many of which are in the AI sector. Therefore, you will be involved in building architectures, interfaces, and overall user experiences for new products.Why You Might Be Interested:Work at the intersection of web, mobile, and AI technologiesOpportunity to expand your tech stack and work with new technologiesInfluence in creating new products, not just maintenanceStrong cross-functional collaborationAbout You:You have at least 2 years of commercial experience in frontend development.You are proficient in React, TypeScript, and SCSS, and have the ability to create fast, adaptive web interfaces, with experience in layout design and tools like Figma, Webflow.Code quality: You are familiar with testing tools (e.g., Jest), Git processes, and writing clean, maintainable code.You have experience working with REST API and WebSockets.Tools: You have experience with CI/CD, bug tracking systems (e.g., Sentry), and basic security practices.Your Responsibilities:Develop and maintain web and mobile applications using React.Create and integrate functionality and business logic into web applications: data visualization from the backend, working with analytics integrations and events.Collaborate with designers and product managers to ensure a smooth and user-friendly UX across all platforms.

Join our dynamic team as a Frontend Engineer at Wix Editor, where you will collaborate with over 1,000 skilled developers in our frontend community. You will play a vital role in managing the technical aspects of various projects, ensuring they are feasible during the discovery phase, and delivering features efficiently to production. Your contributions will help enhance our solutions throughout the development process. By partnering with product managers, designers, fellow developers, and QA specialists, you will help design innovative and scalable solutions that elevate the user experience.In your daily tasks, you will:Oversee the technical execution of projectsEngage in code reviews and pair programming to enhance code qualityBring features to life through implementation and developmentCollaborate and share knowledge across different teamsIdentify and address technical debt related to featuresParticipate in the technical design, rollout, and support of features post-production

Join Ajax Systems, a leading international technology firm and the largest manufacturer of security systems in Europe. With over 4.5 million end-users and 330,000 PRO-users across more than 180 countries, our innovative products provide comprehensive solutions for safeguarding residential and commercial properties of all sizes. Our portfolio includes 280 devices dedicated to intrusion protection, video surveillance, fire safety, comfort, and automation. We demonstrate significant growth annually, both in our team size and our global user base.Our Research and Development department, consisting of four key divisions: System, Device, Automation, and QA, is the driving force behind our product development. We are currently expanding our team and are in search of a talented Senior Front End Engineer with expertise in React.

Role Overview Miratech is looking for a Senior Data Engineer in Kyiv. This role focuses on designing, building, and maintaining scalable data architectures that support business growth. The position involves working closely with teams across the company to deliver reliable data solutions. What You Will Do Design and develop data architectures that can scale with business needs Build and maintain data processing pipelines Work with cross-functional teams to deliver data solutions that support business insights Optimize data workflows for performance and reliability Ensure data integrity throughout all processes

Join our innovative team as a Senior Embedded Engineer at ajax, where you will play a pivotal role in designing and developing cutting-edge embedded systems. You will work closely with cross-functional teams to create reliable and efficient software solutions that meet the demands of our customers.In this dynamic position, you will leverage your expertise in embedded programming, hardware integration, and system architecture to contribute to a variety of exciting projects. You will have the opportunity to mentor junior engineers and help shape the future of our technology.

Join our team at Progressoft as a Senior AI Engineer, where your passion for transforming data into intelligent, production-ready solutions will thrive. In this remote role, you will engage with the entire AI stack, from classical machine-learning models to cutting-edge large language models (LLMs), computer vision pipelines, and analytics/forecasting workflows. If you are enthusiastic about data exploration, model development, and delivering reliable AI services, we are eager to connect with you.Key ResponsibilitiesModel Development: Design, train, fine-tune, and assess models across various methodologies including classical ML, deep learning (CNNs, transformers), and generative AI (LLMs, diffusion).Data Exploration & Analytics: Perform exploratory data analysis, statistical testing, and forecasting to guide feature development and business KPIs.End-to-End Pipelines: Create reproducible workflows for data ingestion, feature engineering, training, CI/CD, and automated monitoring.LLM & Agentic AI Engineering: Develop prompts and retrieval-augmented generation (RAG) pipelines; fine-tune LLMs on specialized datasets to enhance accuracy and meet product specifications.AI Automation & Integration: Deploy AI components as micro-services; integrate with orchestration tools (Airflow, Prefect) and business APIs to streamline decision-making processes.Continuous Learning: Stay updated on advancements in LLMs, vision, and analytics; share knowledge and best practices with the engineering team.Mentorship: Provide guidance to junior engineers and contribute to shaping technical direction and engineering excellence.

About the Role Miratech is hiring a Senior Data Engineer in Odesa. This position focuses on designing, building, and maintaining scalable data architectures that support business insights and operational efficiency. What You Will Do Design and develop data solutions to address business needs Build and maintain scalable data architectures Support data-driven decision-making across the organization Who We’re Looking For Someone who enjoys solving complex data challenges and working with modern data technologies. Experience in environments where priorities shift quickly is helpful.

Role overview Miratech is seeking a Senior DevOps Engineer based in Kyiv. This position centers on designing, building, and refining cloud infrastructure. The role involves integrating and deploying applications to support smooth, reliable delivery. What you will do Create and enhance cloud infrastructure to meet business requirements Implement and maintain continuous integration and continuous deployment (CI/CD) pipelines Collaborate with engineering, QA, and product teams to streamline deployment processes Optimize systems for stability, scalability, and efficiency Requirements Proven experience building and managing cloud infrastructure Familiarity with CI/CD tools and workflows Strong collaboration skills and an interest in solving technical challenges with others Proactive mindset and ability to adapt to shifting priorities

Join our dynamic team at nix as a Senior Integration Engineer, where you will leverage your extensive experience with MuleSoft to design and implement robust integration solutions. You will play a pivotal role in enhancing our digital infrastructure, ensuring seamless connectivity between various systems and applications.Your expertise will contribute significantly to delivering high-quality integration solutions that meet our clients' evolving needs.

Join our innovative AI Creation Team at Wix Harmony, the forefront of Wix's AI-driven website development. We are dedicated to crafting the essential elements that empower AI to construct real, functional websites.Your Role:Develop high-quality and scalable code using React and TypeScript.Design and implement new features from conceptualization to production.Review code changes and uphold rigorous engineering standards.Collaborate effectively with product managers, designers, and other engineers to deliver AI-enhanced products.Tackle complex challenges in both frontend and backend (Node.js) development.Engage in technical discussions, make architectural decisions, and contribute to continuous improvement initiatives.

N-iX is seeking a talented Senior Release Engineer to become a vital part of our Release Management team on one of our exciting projects. In this role, you will be instrumental in the software development lifecycle, overseeing the validation, promotion, deployment, and ongoing monitoring of releases across various environments. The ideal candidate will have hands-on experience with DevOps tools, cloud infrastructure, and the expertise to manage safe and scalable rollouts effectively.Key Responsibilities:Validate and promote releases, ensuring they meet quality standards.Build and deploy artifacts to both staging and production environments.Execute comprehensive test suites to confirm readiness for promotion.Manage promotions through deployment rings and configure pipelines efficiently.Monitor application health, including rollbar alerts and canary error dashboards.Review and adhere to monitoring plans for each deployment.Operate and enhance end-to-end CI/CD pipelines utilizing tools like Jenkins, GitHub, and BuildKite.Oversee infrastructure and service deployments using Kubernetes and Argo.Coordinate urgent fix rollouts and rollback processes as necessary.Utilize AWS services (EKS, RDS, S3, VPC, etc.) for deploying and managing infrastructure.Automate configuration and ensure scalability of environments.

Role overview Miratech is hiring a Senior Network Engineer/Analyst in Kyiv. This role focuses on designing, implementing, and maintaining network infrastructures. The position sits within the engineering department and collaborates with teams across the company to support reliable network operations and strong performance.