Senior Android Developer

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 rel…

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

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.

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.

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.

Join Precoro, a leading product company specializing in B2B SaaS solutions that empower businesses to seamlessly automate and manage their purchasing processes, enhancing operational efficiency across global teams.With over 1,000 companies in more than 80 countries relying on us, we help organizations minimize manual work, improve visibility into expenditures, and achieve significant cost savings.For the last decade, we have diligently developed a robust and expanding SaaS product, featuring:A talented team of over 125 professionalsA diverse client base spanning the US and EuropeSeamless integrations with prominent platforms such as Amazon, Slack, and Google

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.

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.

Join the Ajax Systems Team! We are a leading international technology company and the largest developer and manufacturer of security systems in Europe, specializing in smart home capabilities. Our ecosystem encompasses 135 devices, mobile and desktop applications, and robust server infrastructure. We have consistently demonstrated exponential growth in team size and global user base, with over 3,300 employees protecting 2.5 million users across more than 187 countries.About the Device Department Our dedicated Device Department focuses on developing innovative devices for security and automation. We embrace significant challenges in the following areas: - Low-Power: Devices must operate efficiently for extended periods on standard batteries; - Cost Efficiency: Our mass-market products should remain competitively priced; - Design for Manufacturing (DFM) and Design for Humans (DFH): Our schematics, enclosures, and components should be easily replicable in high volumes without compromising quality. Our development primarily utilizes STM32 microcontrollers, along with other MCUs and SoCs, employing Embedded C. We have cultivated a talented team of Hardware and Embedded C engineers, industrial designers, and mechanical engineers.

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.

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.

Ajax Systems is a pioneering international technology firm and the largest manufacturer of security systems in Europe. The company specializes in cutting-edge solutions for video surveillance, smart homes, fire detection, and flood prevention. Our extensive product portfolio features 280 innovative wireless and wired devices designed for security and automation. Currently, Ajax safeguards over 4.5 million users across 187 countries.We are seeking a highly skilled and experienced Senior Java Developer to join our dynamic accounting team at our Kyiv office. This role is perfect for a technically adept individual ready to contribute to impactful projects.

We are seeking a Senior/Lead Full-Stack Developer to enhance the technical team within Universe Group's FORMA division. You will play a crucial role in developing our web product within the document processing and conversion niche. Your primary responsibilities will include:Designing and implementing new functional modules and integrations to expand product capabilities.Ensuring high code quality and standardizing development approaches.Accelerating development processes and releasing new product versions.Defining and developing product architecture, including technology selection, project structuring, and building scalable infrastructure to support a large user base.FORMA is a business unit of Universe Group, which creates SaaS solutions for document management. Our flagship web product is PDFGuru. Our team has achieved remarkable results, including:Over 4 million users utilizing our products monthly.Access to more than 50 tools for effective document management.Users from over 30 countries choose our tools for their needs.Want to feel the atmosphere at FORMA? Check out our video showcasing our team—how we work, grow, and build a billion-dollar company from Ukraine.

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.

Your impactful mission awaits. As a Front End Developer, you will…Design and implement flexible, efficient architectural solutions.Write clean, maintainable code with a focus on performance optimization.Engage in regular code reviews, providing mentorship to junior developers.Enhance overall code quality through vigilant monitoring of pull requests.Continuously develop and upgrade our existing cross-platform products.

About Us:Swarmer is at the forefront of drone technology, developing cutting-edge software that empowers drones to operate autonomously in large formations without the need for pilots. Our technology has been rigorously tested in over 100,000 combat missions in Ukraine, making it a vital player in modern drone warfare. Recently, we secured a $15 million Series A funding round, the largest investment in Ukrainian defense technology since the onset of the war, and we are expanding our operations to support NATO-aligned nations.Our software is actively saving lives and defending democratic values, showcasing the real-world impact of our innovations.Your Role:As an Integration Engineer (Hardware/Embedded), you will play a crucial role in the hardware composition of our products and ensure their seamless connectivity with our software solutions.

We are seeking a highly skilled Senior TypeScript/Vue.js Developer to join our dynamic team at Sigma Software Group. As part of our innovative Swedish advertising platform, you will play a crucial role in developing and enhancing our front-end applications using cutting-edge technologies. This is an excellent opportunity for professionals looking to make an impact in the world of digital advertising.

Join SKELAR, a pioneering Ukrainian venture builder committed to crafting international tech businesses. Working alongside our co-founders, we assemble talented teams aimed at achieving victory in global markets.Currently, SKELAR boasts a diverse portfolio of businesses across various sectors such as EdTech and marketplaces. Our startups are consistently recognized among Ukraine's top startups and product companies, achieving high rankings in the PlayStore and developing platforms utilized by millions. Our businesses have been featured in renowned media outlets like TechCrunch and Wired.We take pride in a robust team of over 1,000 experts with exceptional expertise and ambitious goals. Our people are our most valuable asset, and we strive to build businesses with the finest talents available in the market.We are currently seeking a Strong Middle/Senior Android Developer.PawChamp is a mobile application and online platform designed for pet parents—dog owners—providing them with resources to train their pets and learn more about dog care through 24/7 expert chats, our AI companion Pawchie, and educational materials developed with canine professionals. We deliver personalized daily lessons covering all aspects of dog training from basic commands to behavioral problem-solving. Our strategic goal is to become a leader in the global online dog training market, catering to all needs of pet parents and their dogs beyond just training.Recognized as Product of the Day on Product Hunt in October 2025.PlayStore rating: 4.2Intro video about the product: Watch hereChallenges awaiting you:- Support and enhance existing functionality; - Implement new features while adhering to agreed architectural approaches; - Ensure product stability and high quality through Unit and Integration testing; - Collaborate closely with a cross-functional team: from discussing logic with the Product Owner to aligning contracts with Backend and refining UI/UX with designers; - Involve in task decomposition, estimation, and collaborative sprint planning; - Actively influence improvements in workflows, technology stack selection, and development approaches within the team;What we value:Must have:4+ years of experience in Android development...

Join Ajax Systems, a leading international technology firm, as a Hardware Engineer in our Fibra division. We are the largest developer and manufacturer of Ajax security systems in Europe, specializing in smart home solutions. Our ecosystem comprises 135 devices along with mobile and desktop applications supported by a robust server infrastructure. With over 3,000 professionals, we continue to experience exponential growth, safeguarding 2.5 million users across more than 169 countries.About the Team:The Fibra team is dedicated to creating cutting-edge security and automation devices for commercial properties. Our developers primarily work with STM 8/32 and Embedded C. We have established a strong expertise with a talented group of Hardware and Embedded C engineers, industrial designers, and mechanical engineers. The team has already launched several leading devices and will continue to innovate, developing and releasing numerous new products in the future.

We are seeking a talented and experienced Senior Java Developer to join our dynamic team at Miratech. In this role, you will be responsible for designing, implementing, and maintaining high-performance Java applications, ensuring optimal performance and scalability.