Senior C++ Developer ( AI Team)

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.

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...

Speechify’s mission is to make reading accessible for everyone. Over 50 million people use our text-to-speech technology to turn everything from PDFs to news articles into audio, helping them read faster and remember more. Our products span iOS, Android, Mac, Chrome Extension, and Web App. We’ve been recognized as Chrome Extension of the Year by Google and received a Design Award from Apple in 2025. Our fully distributed team of about 200 includes frontend and backend engineers, AI researchers, and veterans from companies like Amazon, Microsoft, and Google. We also work alongside alumni from Stanford and founders of startups such as Stripe and Vercel. Role overview Speechify’s Android app leads the Play Store in text-to-speech. We’re hiring a Tech Lead for Android Core Product to guide feature development and improve the app’s core experience. This role is ideal for someone who thinks strategically, enjoys quick-moving projects, and cares about delivering a polished user experience. What you will do Lead technical direction for Speechify’s Android app Drive new feature development and refine existing functionality Collaborate with a global team in a flat structure that values technical leadership and results Promote high standards for code quality, performance, and user experience What we look for Strong work ethic and a drive to achieve results Clear, effective communication skills Experience leading Android development projects Comfort working in a distributed, collaborative environment Competitive spirit and a focus on delivering for users Interview process The interview process includes several technical interviews, usually completed within one week. Location This role is based in Kyiv, Ukraine.

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 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.

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.

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.

Role overview The Android Framework Architect at Tieto Tech Consulting will play a central role in shaping frameworks that power advanced Android solutions. Based in Kyiv, this position involves close collaboration with engineers and designers to enhance both user experience and the overall functionality of mobile products. What you will do Design and develop Android frameworks that support both new and existing mobile applications Work with cross-functional teams to deliver solutions that meet high standards for usability and performance Apply technical expertise to help guide the direction of mobile technology projects Location This role is located in Kyiv.

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 our innovative Game Development studio as a Senior Backend Developer specializing in .NET. We are seeking a seasoned professional who possesses a profound understanding of server architectures, real-time load handling, and cloud infrastructures. This position is ideal for an individual eager to build the backend for a new mobile game targeting Android and iOS platforms from the ground up, shaping the technological foundation of the product and making pivotal technical decisions.

About the Role Playtech is hiring a Senior Full Stack Developer for its Kyiv office. This position sits within the software development team and focuses on building and improving applications for the gaming industry. The work involves both front-end and back-end development, with a strong emphasis on delivering reliable and user-friendly products. What You Will Do Design and implement software solutions that meet business and technical requirements Enhance and maintain existing applications to improve performance and user experience Ensure smooth integration of applications across various platforms Collaborate closely with team members to deliver high-quality releases Who We’re Looking For Experience developing both front-end and back-end systems Strong attention to detail and a proactive approach to problem-solving Comfort working on complex projects in a collaborative team setting Ability to adapt and contribute in a busy development environment Location This role is based in Kyiv.

Join our dynamic team as a Senior Java Developer at Miratech in Kyiv. In this pivotal role, you will leverage your expertise in Java to design, develop, and optimize high-quality software solutions that drive our technology forward. Collaborate with cross-functional teams to create innovative applications and contribute to all phases of the development lifecycle.We are looking for passionate individuals who thrive in a collaborative environment and are eager to tackle complex challenges.

We are seeking a Senior/Lead Full-Stack Developer to enhance the technical team at Universe Group— FORMA. You will work on our web product dedicated to document processing and conversion. Your primary responsibilities will include:Designing and implementing new functional modules and integrations to enhance product capabilities.Ensuring high code quality and standardizing development approaches.Accelerating development processes and the release of new product versions.Defining and developing the product architecture, including technology selection, project structuring, and building scalable infrastructure to support a large user base.FORMA is a business of Universe Group that creates SaaS solutions for document management. Our flagship web product is PDFGuru. The team has achieved remarkable results, including:Over 4 million users monthly interact with our products.Our products offer more than 50 tools for efficient document handling.Users from over 30 countries trust our tools for their needs.Want to experience the FORMA atmosphere? Check out our video about our team—how we work, grow, and build a billion-dollar company from Ukraine.

Become a pivotal member of our Chatbot team at Wix, where your expertise in AI technology will help revolutionize customer experiences. As a Senior AI Server Engineer, you'll be responsible for the creation of sophisticated, context-aware features that will transform our Customer Care Chatbot into an essential resource for users navigating their Wix journey. Your role will encompass the entire development cycle—from exploring cutting-edge AI methodologies to implementing scalable features that provide meaningful value to millions of users.You will:Architect, develop, and integrate advanced AI functionalities utilizing the latest LLM and NLP technologiesEngage in research and experimentation to discover innovative solutions and apply high-level models to real-world customer care challengesTake full ownership of feature development, collaborating with product teams to define requirements, estimate scope, implement solutions, and monitor performanceOptimize system performance, stability, and reliability to ensure an uninterrupted, high-quality serviceParticipate in architectural and technical discussions aimed at enhancing system design and developer experience

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.

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.