Senior Frontend Developer

Ajax Systems is a leading international technology company 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 products are trusted worldwide. Ajax provides comprehensive solutions for safeguarding residential and commercial properties of all sizes. Our product portfolio features 280 devices designed for intrusion detection, video surveillance, fire safety, and automation solutions. Each year, we experience exponential growth in both our team size and our global user base.Our System Department is dedicated to enhancing device intelligence, transforming them into fully-fledged IoT solutions. We have developed and continue to enhance the Malevich OS (a modular RTOS for various hardware platforms) and the Ajax Cloud service (Java 20 / Kotlin, AWS, Akka, NATS, Kafka, Mongo, MySQL). To facilitate system management, maintenance, and monitoring, we have created applications for iOS (Objective-C, Swift), Android (Java, Kotlin), and Windows/macOS (Python / C++, QT, QML).We are on the lookout for a Senior C++ Developer to join our AI team. In this pivotal role, you will empower our entire range of video devices to not only capture images but also to discern specific objects within the frame, track their movement and behavior, and recognize events and individuals.Your mission will involve integrating various types of computer vision analytics into our cameras, doorbells, and NVRs, taking into account the unique resource constraints of each device. You will also ensure seamless device integration with each other and with the cloud. Beyond implementing new functionalities, there will always be opportunities to enhance existing features by bringing your innovative ideas to pre- and post-processing stages.This role requires close collaboration with ML engineers, business analysts, cloud developers, and application developers, providing you with a fantastic opportunity to advance both your communication skills and technical expertise.

Join our Automation team as an Embedded C++ Developer, where you will contribute to the development of high-quality electronic devices through innovative embedded systems. Your role will involve tackling challenges at various system levels, from creating firmware for testing hardware to designing software for autonomous equipment that ensures production quality control.Collaboration is key to our success, and you will be part of a dynamic environment with a focus on thoughtful system architecture and project organization. This structure enables multiple engineers to work effectively on the same product and quickly understand the codebase.

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

Atto Trading is an innovative quantitative trading firm leading the charge in global high-frequency trading strategies. We are on the lookout for a skilled C++ Software Engineer to become a vital part of our expanding team.This role offers the flexibility of remote work from Ukraine, with occasional in-office attendance in Kyiv as circumstances permit.Our international team is diverse, comprising experts in trading, statistics, engineering, and technology. Our structured approach, combined with rapid feedback from the market, enables us to swiftly transform concepts into profitable solutions. Working in our collaborative environment allows us to tackle some of the most challenging issues in the industry together. As a small firm, we maintain agility and uphold the highest standards of integrity, creativity, and dedication.Your Responsibilities:Architect and implement performance-critical components for our large-scale trading infrastructure.Develop high-frequency trading (HFT) systems in C++ focusing on low latency and unwavering reliability.Produce modern, efficient code based on the latest C++ standards.Engage directly with cutting-edge networking hardware using kernel-bypassing drivers.Conduct performance research aimed at enhancing the speed and scalability of our platform.Qualifications:Minimum of 3 years of direct experience in C++ development.In-depth understanding of C++ standards (C++14, C++17; C++20 knowledge is highly desirable).Practical experience with Python and/or Bash scripting.Familiarity with Linux operating systems and system-level programming.Strong understanding of multithreading, IPC, and concurrent systems.Proven ability to optimize latency and throughput, including experience with profiling and PGO.Knowledge of object-oriented programming and software design patterns.Bachelor’s degree in Computer Science, Computer Engineering, or a related technical discipline.Meticulous attention to detail, coupled with a critical and quality-oriented mindset.Able to work independently or within small teams in a fast-paced environment.Excellent communication skills and upper-intermediate (or higher) proficiency in English.A genuine curiosity and passion for financial markets and trading.Preferred Qualifications:Experience in developing high-performance, low-latency systems on Linux.Familiarity with operating system internals and kernel-level networking.Understanding of financial instruments such as stocks, ETFs, futures, or options.Knowledge of protocol-level networking (TCP/UDP/IP stack insights are a plus).Benefits:Competitive compensation package.Performance-based bonus opportunities.Healthcare and sports/gym budget.Mental health support, including access to therapy.Paid time off (25 days).Relocation support (where applicable).

We are seeking a talented and passionate Embedded Developer to join our dynamic Fibra Team. In this role, you will work on cutting-edge embedded systems, contributing to the development and optimization of innovative solutions that enhance user experience and performance.You will collaborate with a team of skilled engineers to design, develop, and implement software for embedded systems. Your expertise will play a crucial role in driving our projects forward and ensuring high-quality standards are maintained.

Playtech is looking for a DevOps Team Leader to join the Kyiv office. This role leads a group of DevOps engineers with a focus on refining software development workflows and improving application reliability. The position centers on optimizing deployment pipelines and supporting teams as they deliver new features and updates. Responsibilities Lead and mentor a team of DevOps engineers Guide the team in adopting modern DevOps practices Work to streamline software development and deployment processes Maintain high availability and performance for Playtech applications Collaborate with teams across departments to enhance product quality What We’re Looking For The ideal candidate enjoys working with technology and knows how to motivate a team toward operational goals. Strong technical skills and leadership experience are important, along with the ability to work on projects that involve several departments.

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 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.

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 innovative team in Kyiv as a Core Developer specializing in Rust and C++. In this full-time role, you will work in our office, with convenient shuttle services from the nearest metro station.About the PositionWe are looking for a talented developer with over 5 years of experience to enhance the core architecture of our real-time control systems for swarm robotics and sensor management. As part of a forward-thinking development team, you will leverage cutting-edge technology to solve complex challenges in mission-critical environments.Your Daily Responsibilities:Design, develop, and sustain robust systems for effective swarm control and sensor management.Implement high-performance communication protocols and real-time processing solutions tailored for robotics.Work collaboratively with diverse teams to seamlessly integrate backend components with robotics software and sensor networks.Enhance system performance, scalability, and reliability in a distributed robotics ecosystem.Tackle intricate problems using advanced programming languages such as C++ and Rust.Engage in code reviews, architectural discussions, and key software design decisions.

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 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.

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 Team at IdealsIdeals is a renowned global B2B SaaS provider celebrated for being the most customer-focused brand in the secure business collaboration space. With over 2 million users across 300,000 companies worldwide, we empower organizations to manage high-stakes processes and make significant decisions with greater ease and efficiency.Ideals Virtual Data Room (VDR): Facilitating secure document sharing and collaboration for due diligence, fundraising, corporate reporting, licensing, clinical trials, and other intricate transactions.Ideals Board: A platform designed for board and leadership collaboration, ensuring faster, safer, and compliant decision-making.Your MissionWe are in search of a Backend Software Engineer (.NET) with AI skills who will be pivotal in developing and scaling our secure, high-load VDR services while also exploring the integration of AI patterns into our product features.Your success will be gauged by your strong backend fundamentals—reliability, performance, scalability, and maintainability—and your capability to implement AI features safely and efficiently using reusable, well-architected components.This role is hands-on within a mature product environment where engineering excellence, observability, and sustainable architecture are paramount.Key ResponsibilitiesBackend Engineering:Design, develop, and maintain high-quality production-grade .NET services.Utilize .NET Framework 4.7, .NET 8, ASP.NET, Web API, and Entity Framework.Create and refine data models with MS SQL Server and PostgreSQL.Deploy and manage services on AWS, leveraging Docker, Kubernetes, and ArgoCD.Ensure service reliability and performance through:Defining clear SLIs, SLOs, and capacity planning.Implementing caching, retries, backoff strategies, and circuit breakers.Establishing secure multi-tenant access control.Take ownership of services from design through implementation, deployment, monitoring, and support.