Senior PHP Developer

Join Ajax Systems, a leading international technology company and Europe's foremost manufacturer of security systems. With over 4.5 million end-users and 330,000 PRO users across more than 180 countries, our products are trusted for their reliability and innovation. We offer comprehensive solutions for protecting residential and commercial properties of all sizes. Our portfolio features 280 devices designed for intrusion protection, video surveillance, fire safety, comfort, and automation. Our team is expanding rapidly, showcasing significant growth in both personnel and global user base each year. Our QA Department plays a crucial role in ensuring the reliability and stability of our security systems, supporting products throughout their development, manufacturing, and ongoing evolution. Our engineers are not just testers; they are creative problem-solvers who rigorously assess new devices under extreme conditions — simulating human and animal movements, replicating challenging weather scenarios, and conducting controlled fire and flood tests.

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.

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.

Join our dynamic team at ajax as a Python Tech Lead where you will play a pivotal role in guiding our development efforts. We are looking for an enthusiastic leader who is passionate about technology and can inspire a team of developers to produce high-quality software solutions.Your responsibilities will include overseeing project development, mentoring team members, and ensuring that our coding standards and best practices are adhered to. You will also work closely with stakeholders to gather requirements and translate them into technical specifications.

Ajax Systems — a leading international technology firm and the largest manufacturer of security systems in Europe. Our products are trusted by over 4.5 million end users and 330 thousand PRO users across more than 180 countries. Ajax provides comprehensive solutions to safeguard residential and commercial properties of various sizes. Currently, our portfolio includes 280 devices for intrusion protection, video surveillance, fire safety, comfort, and automation. Each year, we demonstrate exponential growth in both team size and user base worldwide.The security systems we develop demand heightened standards of reliability and stability. This is why our QA Department at Ajax Systems supports product development through all stages, from inception to manufacturing and ongoing enhancement. Our team identifies bugs in hardware, software, or system interactions. We are not just a group of 'clickers'; we are creative engineers who test new devices under various extreme conditions: simulating human and animal movements, recreating complex weather scenarios, managing temperature fluctuations, and conducting controlled fires and flooding.

Quantum-Systems is at the forefront of developing next-generation unmanned systems for aerial, land, and maritime applications. From advanced aerial drones to underwater and ground platforms, our systems integrate cutting-edge hardware with AI-driven software, delivering seamless control and real-time data analytics. Trusted by clients in defense, security, and the public sector globally, we are redefining versatility and mission execution efficiency.Quantum-Systems is a committed partner to Ukraine, with a local office established in 2022.We are currently seeking a Test Engineer to ensure the operational effectiveness of our equipment, identifying defects and maintaining quality control prior to release or further repair. This is a vital role that guarantees the reliability of our technology.This position is full-time and office-based. Candidates must be located in Kyiv.Your Daily Mission:Conduct functional testing of equipment within defined parameters.Maintain comprehensive logs throughout the testing process.Identify, describe, and classify discrepancies.Verify devices post-repair or component replacement.Test modules: power supplies, network interfaces, sensors, buttons, and ports.Work with diagnostic software and measuring tools.Conduct load and stress tests as required.Collaborate with service engineers to clarify defects and facilitate equipment repairs.Adhere to internal testing and quality standards.

About the Role Vacancies is looking for a Manual QA Engineer based in Kyiv. This position centers on backend testing and verifying email functionality to help maintain product quality and reliability.

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.

Join our dynamic team at Ubisoft as a Junior QC Specialist focusing on Networking Testing. In this role, you will play a vital part in ensuring the quality and performance of our online gaming experiences. You will work closely with developers and other quality assurance experts to identify issues and implement solutions, enhancing the overall player experience.

Quantum Systems is at the forefront of developing next-generation unmanned solutions across air, land, and sea. Our innovative systems, which include advanced aerial drones as well as underwater and ground platforms, are designed to integrate state-of-the-art hardware with AI-powered software to deliver seamless control and real-time data insights. Trusted by defense, security, and public sector clients globally, we are committed to enhancing mission versatility and performance.Since establishing our local office in Ukraine in 2022, we have been a dedicated supporter of the nation.This position is based in the Kyiv region and requires on-site presence for 4 to 5 days a week. Remote work options are not available.We seek a meticulous engineer passionate about data analysis, system quality assurance, and performance validation under real-world conditions.As a Test Validation Engineer, you will be responsible for assessing test results, analyzing logs from ground and flight tests, and ensuring that our systems operate as intended. Your contributions will be vital in validating system performance and detecting discrepancies before they escalate into significant issues.No prior UAV experience is necessary—we will provide the required training. Your attention to detail, consistency, and capability to handle technical data are what truly matter.Daily Responsibilities:Review and analyze logs from ground and flight testsValidate system behavior against expected outcomesIdentify anomalies, inconsistencies, and potential issuesWork with large datasets of telemetry and test resultsClearly document findings and report issuesCollaborate with engineering and support teams to share insights

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.

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 overall application reliability.Identify and resolve bugs while continuously improving application performance.

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.

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.

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.

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 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.