Node.js Developer

United TechKyiv

On-site Full-time

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Experience Level

Entry Level

Qualifications

Key Qualifications:Proficient in Node.js and backend development. Familiarity with microservices architecture. Experience in building scalable applications. Strong problem-solving skills and a collaborative mindset. Knowledge of web technologies such as HTML, CSS, and JavaScript.

About the job

About the Role: We invite you to be a part of our dynamic team as we build a state-of-the-art global video chat platform. You will have the unique opportunity to contribute to the initial stages of product development, shaping its architecture and backend without the constraints of legacy systems. This role allows you to make impactful decisions, engage with cutting-edge technologies, and develop a scalable cross-platform solution for both web and mobile applications.

About United Tech

United Tech is a pioneering IT product firm that is revolutionizing how people connect in real-time through innovative technology solutions. Our commitment to excellence and user engagement drives us to create robust platforms that cater to millions worldwide.

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iOS Developer

Playtech

Full-time|On-site|Kyiv

Your impactful role: As an iOS Developer, you will...Design, develop, and maintain innovative applications for the iOS platform, collaborating with a talented team.Engage with cross-functional teams to define, design, and implement new features that enhance user experience.Conduct unit tests to ensure code robustness, handling edge cases, usability, and over…

Feb 26, 2026

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Senior iOS Developer

Ajax Systems

On-site|On-site|Kyiv, Kyiv City

Ajax Systems is a leading international technology firm recognized as the largest developer and manufacturer of Ajax security systems equipped with smart home functionalities in Europe. Our innovative ecosystem comprises over 280 devices, mobile and desktop applications, and robust server infrastructure. With a dynamic growth trajectory year after year, we proudly employ over 5,100 talented individuals dedicated to enhancing security for 4.5 million users across 187 countries.Our System Department is at the forefront of making devices smarter by transforming them into fully-fledged IoT solutions. The team is responsible for the development of OS Malevich, a modular RTOS tailored for various hardware platforms, and the Ajax Cloud, utilizing technologies such as Java 20 / Kotlin, AWS, Akka, NATS, Kafka, MongoDB, and MySQL. We develop applications for iOS (Objective-C, Swift), Android (Java, Kotlin), and Windows/macOS (Python / C++, QT, QML) to empower users, installers, and engineers to effectively manage, maintain, and monitor our systems.

Sep 29, 2025

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Junior iOS Engineer at Guru Apps | Kyiv, Ukraine

Universe Group

Full-time|On-site|Kyiv, Kyiv, Ukraine

We are looking to strengthen our team at Guru Apps with a talented Junior iOS Engineer who will actively participate in product experiments alongside our dedicated team.Guru Apps is a multi-product company within the Universe Group, focused on developing global iOS applications in the utility and AI niches.Our products optimize the digital routines of millions of users worldwide daily — from memory cleaning, document management on your phone, to AI tools for photo editing and content creation.Over the years, we have achieved remarkable milestones:— Surpassed 100 million downloads— Expanded into 185 countries— Consistently ranked #1 in the App Store, surpassing giants like Google, Netflix, and Instagram— Established leadership in our niches, setting quality standards in the utility and AI categories— Launched our own R&D laboratory, where we create at least 2 new products each year and develop proprietary AI technologies— ⭐ Maintained an average rating of over 4.6 in the App StoreAt Guru Apps, we embrace speed, experimentation, and ambition to build global products with a distinctly Ukrainian DNA. If you want to experience what it’s like to work within a community united by the ambition to create a unicorn from Ukraine, check out this video about Guru Apps.You are the perfect fit if you:Want to impact the product. Our developers influence both technical and product decisions. We discuss these as a team, where everyone can voice their opinion and propose ideas.Aspire for growth — we have an experienced team eager to share knowledge. Interested in vertical growth? Here, it all depends on your desire and work results.Are ready to develop category-leading products — we have already achieved impressive results, and there’s much more to come!

Mar 11, 2026

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Mid-Level iOS Mobile Engineer at Ruut | Kyiv or Warsaw

universe-group

Full-time|On-site|Kyiv or Warsaw

Ruut is a digital coaching platform focused on helping athletes and runners make smarter daily decisions about training and recovery. By using metrics like HRV, Ruut aims to improve performance stability and reduce injury risk through clear actions and personalized running plans. This Mid-Level iOS Mobile Engineer role centers on shaping both the product and the broader engineering culture. The team values engineers who want to influence features, architecture, and the pace of business development, not just write code. Ruut operates in Kyiv and Warsaw, with a team that welcomes responsibility and thrives on building meaningful solutions together. Role overview Take ownership of iOS development for Ruut’s core product, contributing to both features and foundational engineering practices. Influence technical decisions, optimize processes, and help the team deliver faster. Work closely with product managers, designers, and fellow engineers, with significant autonomy in your area. What you will do Develop, improve, and support new features in the iOS app. Contribute to the main product and explore new directions for the platform. Build and enhance mobile infrastructure, including CI/CD, testing, and release processes. Implement observability tools for logging, crash tracking, and metrics. Integrate AI tools and automation into development and delivery workflows (using tools such as Cursor, Codex, or Claude). Collaborate with product and design, while making independent technical decisions. Shorten time-to-market through faster releases, A/B testing, and rapid iteration. Requirements Experience in mobile development, especially on iOS. Background working with product teams or startups. Desire for impact, ownership, and the chance to work with modern approaches, including AI. Comfort with responsibility and building alongside a talented team.

Apr 29, 2026

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iOS Core Product Software Engineer

Speechify

Full-time|On-site|Kyiv, Ukraine

Speechify seeks an iOS Core Product Software Engineer based in Kyiv, Ukraine. The position centers on creating and refining iOS applications that support users in reading more easily and effectively. Teamwork is a key part of the day-to-day, with frequent collaboration across different specialties. Role overview This engineer will play a direct role in shaping the core iOS experience for Speechify’s users. The work involves both building new features and enhancing existing ones, always with a focus on reliability and usability. What you will do Design, develop, and test new features for Speechify’s iOS apps Work with cross-functional teams to deliver reliable software Contribute to the deployment of high-quality solutions for a global user base

Apr 25, 2026

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Game Developer

Sigma Software Group

Full-time|On-site|Kyiv

Join our dynamic team at Sigma Software Group as a Game Developer, where your creativity and technical skills will bring innovative gaming experiences to life. You will work collaboratively with designers and artists to develop engaging and high-quality games for various platforms.

Apr 30, 2026

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Middle Java/Kotlin Developer - Cloud Development

ajax

Full-time|On-site|Kyiv

We are seeking a talented and motivated Middle Java/Kotlin Developer to join our innovative Cloud Development Department at ajax. In this role, you will work on exciting projects that leverage cloud technologies and have a real impact on our products and services.As a Middle Developer, you will be responsible for designing, developing, and maintaining high-quality software solutions. You will collaborate with cross-functional teams to ensure the successful implementation of our cloud strategies.

Apr 1, 2026

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Node.js Developer

United Tech

Full-time|On-site|Kyiv

United Tech is an innovative global IT product company dedicated to transforming the landscape of real-time social connectivity. With a user base spanning North America, Europe, LATAM, and MENA, we specialize in developing next-generation mobile and web applications focused on live streaming and social networking. Our platforms facilitate large-scale, interactive, and engaging connections, positioning us at the forefront of a market projected to surpass $206 billion by 2030. Established in Ukraine, we are rapidly expanding our global footprint.About the Role: We invite you to be a part of our dynamic team as we build a state-of-the-art global video chat platform. You will have the unique opportunity to contribute to the initial stages of product development, shaping its architecture and backend without the constraints of legacy systems. This role allows you to make impactful decisions, engage with cutting-edge technologies, and develop a scalable cross-platform solution for both web and mobile applications.

Aug 9, 2023

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Senior Java Developer

Ajax Systems

Full-time|On-site|Kyiv, Kyiv City

Join Ajax Systems, the premier international technology firm and Europe's leading manufacturer of security systems, as a Senior Java Developer. We specialize in cutting-edge solutions for video surveillance, smart home technology, fire detection, and flood prevention. Our extensive product portfolio includes 180 advanced wireless and wired devices designed for security and automation, proudly protecting over 3.5 million users across 187 countries. With a skilled workforce of 4,100 professionals, we are committed to innovation and excellence in the security industry. We are seeking a talented, experienced, and technically adept Senior Java Developer to contribute to our dynamic team.

Dec 2, 2025

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Senior Android Developer

Ajax Systems

On-site|On-site|Kyiv, Kyiv City

Ajax Systems is an innovative full-cycle organization that transforms ideas into reality, encompassing everything from research and development to mass production and sales. Our expertise spans the manufacturing of advanced physical devices—integrating a variety of sensors and hubs—developing the associated firmware, creating robust server solutions, and releasing user-friendly mobile applications. Our dedicated team collaborates in our Kyiv office, enabling us to make all technical and product decisions locally, ensuring agility and cohesiveness.We are on the lookout for an experienced Android Developer to join our dynamic team and contribute to the evolution of products we are passionate about. We seek a candidate who takes pride in their work, ensuring exceptional user experiences and high-quality development standards. This is a unique opportunity to develop applications for one of Ukraine's leading hardware companies, impacting approximately 400 million active users worldwide. Soon, you will also have the chance to spearhead the development of several new products from the ground up.

Sep 26, 2025

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Mid-Level Java Developer

Miratech

Full-time|On-site|Kyiv

Miratech is looking for a Mid-Level Java Developer to join the team in Kyiv. This position involves working closely with colleagues from different departments to build and support software applications. Role overview This role centers on designing, developing, and maintaining software using Java. The focus is on producing reliable, high-quality code that meets project requirements. Collaboration Expect regular interaction with cross-functional teams. Sharing ideas and problem-solving together are key parts of the workday. What you will do Design and implement Java-based applications Work with others to deliver software solutions Maintain and improve existing codebases

Apr 29, 2026

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Senior Frontend Developer

Vacancies

Full-time|On-site|Kyiv

Role overview Vacancies seeks a Senior Frontend Developer in Kyiv to help grow our product team. This position focuses on expanding development capacity and improving the quality and scalability of our frontend architecture. The team values developers who bring strong Vue experience, care about clean code, and approach design thoughtfully. What you will do Work closely with the team to deliver new product features Refactor and improve existing frontend codebases Boost product performance and scalability Share ideas to enhance both code and workflow Own tasks and ensure they are completed Who thrives here Developers with deep Vue expertise People who show initiative and ownership Those who care about clean, maintainable architecture Individuals able to work independently and move projects forward without sacrificing quality The product Since 2020, the team has built a global platform connecting people across backgrounds, religions, and cultures. Over 1 million visitors use the site each month, with users from the USA, Australia, and other countries. The platform ranks among the top 5 in its category, recognized for high-quality video and a seamless experience even during peak traffic, maintaining 99.99% uptime. The product is ad-free, focusing on genuine connections supported by advanced UX/UI. Features include AI-powered content moderation, strong data protection, and tools for building authentic global relationships. The next milestone: reaching the top 3 among international web-based social networking services.

Apr 23, 2026

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Senior Python Developer

joinus

Full-time|On-site|Kyiv

Join us as a Senior Python Developer where you will play a pivotal role in enhancing our software solutions. You will collaborate with cross-functional teams to design, develop, and maintain high-quality applications. Your expertise in Python and deep understanding of software development principles will be essential in driving innovation within our projects.

Sep 19, 2025

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Senior PHP Developer

nix

Full-time|On-site|Ukraine

nix provides corporate brand protection and domain management services to large enterprises, including Fortune 500 companies. The company specializes in domain registration, online brand monitoring, and anti-counterfeiting solutions. Role overview This Senior PHP Developer position centers on a major modernization project. The team is combining two legacy client portals into a single, unified platform. The goal is to deliver all current features in the new system before moving clients over. Technology stack PHP with Laravel RabbitMQ MySQL Nuxt.js (Vue.js) AWS Location This role is based in Ukraine.

Apr 22, 2026

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Senior Full Stack Developer (Java, Angular)

Miratech

Full-time|On-site|Kyiv

Join our dynamic team at Miratech as a Senior Full Stack Developer, where you will play a vital role in driving innovative projects utilizing both Java and Angular technologies. Your expertise will contribute to creating robust and scalable applications that enhance user experience and operational efficiency.We seek a passionate individual who is ready to take ownership of their work and excel in a collaborative environment. This is an exciting opportunity to be part of a growing company known for its commitment to professional development and technical excellence.

Apr 2, 2026

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Python Developer

Ajax Systems

On-site|On-site|Kyiv, Kyiv City

Ajax Systems is a leading international technology company recognized as the largest manufacturer of security systems in Europe. Our innovative Ajax products are trusted by over 4.5 million users across more than 180 countries, featuring a portfolio of 280 devices designed for intrusion detection, video surveillance, fire safety, and automation.Join Our Automation Department, where we develop cutting-edge software and hardware solutions for testing each device during the manufacturing process. We design automated robotic lines for assembly and packaging, and we create software for device firmware and production management aimed at optimizing manufacturing time for sensors using Python 3 and Embedded C.Our Mission is to ensure the production of the highest quality devices in the shortest possible time. We develop proprietary software and hardware that are utilized at nearly every stage of production, from testing assembled boards and microcontroller firmware to verifying finished devices and packaging. Our primary challenge is achieving full automation of all production stages utilizing conveyors and robotics.Key Responsibilities:— Develop desktop applications (PC, single-board) to automate mass production processes, testing, and calibration of devices.— Integrate hardware with production software necessary for verifying/calibrating individual functions of security, video, and smart home devices.— Collaborate with CI/CD systems for automatic management of software versioning in production.— Create auxiliary programs, scripts, analysis algorithms, and APIs for interaction with databases, third-party software, and hardware from other teams.Required Skills and Qualifications:— Proficiency with PyQT/Pyside is essential.— Minimum of 2 years of commercial experience with Python 3.— Strong understanding of Multiprocessing, Threading, Sockets, and the Python Standard Libraries.— Knowledge of HTTP/TCP and OSI model.— Experience with Object-Oriented Programming (OOP).— Familiarity with embedded systems and automation technologies is a plus.

Feb 10, 2026

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Senior TypeScript/Node.js Developer for Swedish Ad Platform

Sigma Software Group

Full-time|On-site|Kyiv

Join our dynamic team at Sigma Software Group as a Senior TypeScript/Node.js Developer, where you'll play a pivotal role in the development of an innovative advertising platform tailored for the Swedish market. You'll work with cutting-edge technologies to build scalable, high-performance applications while collaborating with a talented team of professionals. Your expertise will help shape the future of digital advertising.

Mar 26, 2026

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Front End Game Developer

Playtech

Full-time|On-site|Kyiv

Join Playtech, a leader in gaming technology, as a Front End Game Developer in Kyiv. In this exciting role, you will collaborate with a dynamic team to create engaging gaming experiences. You will be responsible for developing innovative front-end solutions that enhance user interaction and drive the future of gaming. Your creativity and technical skills will play a vital role in shaping our gaming platforms.

Apr 3, 2026

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Embedded/Hardware developer

Ajax Systems

On-site|On-site|Kyiv, Kyiv City

Join Ajax Systems, a leading technology company and the largest producer of security systems in Europe. We are seeking a talented Embedded Hardware Developer to enhance our innovative product portfolio, which includes over 280 devices designed for intrusion protection, video surveillance, fire safety, and automation solutions. As part of our dynamic R&D team, you will collaborate with the Automation Department to develop sophisticated software-hardware complexes for testing devices during production, create robotic lines for assembly and packaging automation, and optimize manufacturing processes through advanced programming in Python 3 and Embedded C.

Feb 13, 2023

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Scala Developer at Playtech | Kyiv

Playtech

Full-time|On-site|Kyiv

Your impactful role.Engage in the software design, development, refactoring, support, and code reviews to uphold exceptional development standards.Collaborate effectively with platform teams to achieve outstanding results.Take ownership of your tasks, working independently with minimal supervision.Enhance the platform to maximize throughput and scalability.Exhibit a proactive attitude, exceeding expectations.

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