Senior Data Engineer at Sigma Software | Lviv

Join Ajax Systems, a leading international technology company and Europe's foremost manufacturer of security systems. We are seeking a Senior Hardware Engineer to drive innovation in our diverse portfolio of over 280 devices, providing comprehensive solutions for residential and commercial protection. Our products are trusted by over 4.5 million end-users and 330,000 PRO users across more than 180 countries, showcasing our commitment to excellence and continuous growth. Be part of a dynamic team that is shaping the future of security technology with rapid expansion in both team size and global user base.

Join Renesas Electronics as a Hardware Engineer Intern and immerse yourself in the world of cutting-edge hardware design. You will collaborate with our talented engineering team to develop innovative solutions and gain hands-on experience in the field.

Join Our Mission-Driven Team! Location: Lviv (Relocation support available) | Full-time About the Product that MattersOur client operates at the forefront of military technology in Ukraine, and their innovative solutions are reshaping the landscape of real combat operations.They are developing technology that:Remains operational even when communication is lost or jamming occurs.Automatically guides drones to their targets.Enhances autonomy, accuracy, and efficiency. Key Facts:Utilized by over 20 drone manufacturers. Winners of the IT Arena Startup Competition 2024. Collaboration with Brave1.Areas of development: optical navigation, object detection. This is your chance to contribute to technologies that save lives.

Join Simulmedia as a Lead AI Engineer and play a pivotal role in shaping the future of our Agentic Products & Platform. You will lead a team of talented engineers to design, develop, and implement advanced AI solutions that enhance our product offerings and drive innovation. Your expertise will be critical in solving complex problems and delivering exceptional results.

Join our innovative team as a Senior Embedded Engineer at ajax, where you will play a pivotal role in designing and developing cutting-edge embedded systems. You will work closely with cross-functional teams to create reliable and efficient software solutions that meet the demands of our customers.In this dynamic position, you will leverage your expertise in embedded programming, hardware integration, and system architecture to contribute to a variety of exciting projects. You will have the opportunity to mentor junior engineers and help shape the future of our technology.

Role Overview Miratech is looking for a Senior Data Engineer in Lviv. This role focuses on designing, building, and maintaining data pipelines and architectures that support the company's analytics and machine learning goals. The Senior Data Engineer will collaborate with teams across the business to keep data accurate and accessible, supporting decision-making at every level. What You Will Do Design and implement data pipelines and architectures Maintain and optimize systems for data integrity and availability Work with cross-functional teams to support organizational data needs Contribute to Miratech's data strategy and analytics capabilities

Join our dynamic team at Renesas Electronics as a Senior System Engineer specializing in Product Definition. In this vital role, you will lead the charge in designing innovative systems that drive our products forward. Collaborate with cross-functional teams to define product specifications, develop system architecture, and ensure that our solutions meet the highest standards of quality and performance. Your expertise will be pivotal in shaping the future of our technology offerings.

Ajax Systems is a leading international technology company and the largest developer and manufacturer of Ajax security systems in Europe, featuring smart home capabilities. Our ecosystem consists of 180 devices, mobile and desktop applications, and a robust server infrastructure. Every year, we experience exponential growth in both team size and global user base, currently employing over 4,100 professionals. Ajax sensors protect 3.5 million users across more than 187 countries worldwide.The System Department is dedicated to making devices smarter by transforming them into fully functional IoT solutions. Our team has developed and continues to enhance OS Malevich, a modular RTOS designed for various hardware platforms, alongside the Ajax Cloud service utilizing Java 20 / Kotlin, AWS, Akka, NATS, Kafka, MongoDB, and MySQL. We craft applications for iOS (Objective-C, Swift), Android (Java, Kotlin), and Windows/macOS (Python/C++, QT, QML), facilitating management, maintenance, and monitoring for users, installers, and security company engineers.The Ajax product line includes control panels with proprietary RTOS (OS Malevich), video surveillance systems, motion sensors, intrusion detectors, flood and fire sensors, outdoor and indoor sirens, panic buttons with device control functionality, and automation devices. Ajax Systems boasts numerous proprietary technologies such as the Jeweller and Wings radio protocols, the Fibra wired communication protocol, LISA algorithms, SmartDetect, HazeFlow 2, JetSparrow technology, and holds 38 patents for inventions, designs, and more.

Join Simulmedia as a Senior Full Stack Engineer and play a vital role in enhancing our engineering team as we expand our platform and introduce cutting-edge insights and analytics features within our innovative products. Our technical roadmap emphasizes platform unification, presenting the exciting opportunity to modernize our existing enterprise product into a cohesive, state-of-the-art technology stack. This role, featuring a focused 30/70 backend-to-frontend allocation, requires close collaboration with product managers, designers, and data engineers to ensure the seamless incorporation of analytics functionalities into our platform. Your ability to quickly iterate and deliver high-quality features that you own from start to finish will be essential. Location: Candidates must be based in Ukraine. Our offices are located in Kyiv and Lviv, and our teams primarily work remotely, with occasional in-person meetings.

Join our dynamic team at Tieto Tech Consulting as a Senior DevOps Engineer specializing in OpenShift and on-premises solutions. In this pivotal role, you will be responsible for designing, implementing, and maintaining robust infrastructure for our clients. You will collaborate with cross-functional teams to ensure the seamless deployment and operation of applications, leveraging your expertise in DevOps methodologies.

Join SKELAR, a pioneering Ukrainian venture builder that is shaping the future of tech businesses on a global scale. We collaborate with co-founders to assemble formidable teams that excel in international markets.Currently, SKELAR operates multiple businesses across various sectors, from EdTech to marketplaces. Our companies consistently rank among Ukraine's top startups and product firms, frequently appearing in prestigious publications like TechCrunch and Wired.With a robust team of over 1,000 professionals, we pride ourselves on our exceptional expertise and ambitious goals. Our talent is our most valuable asset, and we strive to build our businesses alongside the best in the industry.We are excited to invite applications for the role of Senior Product Engineer (AI-Native Full-Stack) within our R&D Department.At Brighterly, we are redefining online education for children by creating an ecosystem that serves as the ultimate destination for learning mathematics. Our mission is to develop the next EdTech unicorn in a market valued at $130 billion.Technology stack: https://skelar-tech.github.io/Brighterly/Key challenges include:Rapid Prototyping: Build functional MVPs (Web & Mobile) from scratch within short sprints.AI Integration: Implement LLM, agent architectures, and RAG systems into our products.Fullstack Delivery: Independently develop features from database schema to final animations on the frontend.Cross-platform Experimentation: Create mobile applications using AI tools on Flutter/React Native to validate market hypotheses.Architecture for Speed: Design flexible architecture that allows for rapid shifts in development direction without pain points.What we value:Senior Level Mindset: You understand how scalable systems are built, even those generated by AI.AI-Fluency: Familiarity with tools like Claude, Cursor, Windsurf, and v0.dev is essential.

We are seeking a dedicated and experienced QA Lead to oversee our Manual Testing Team in Lviv. In this role, you will lead a group of quality assurance professionals, ensuring that our software products meet the highest standards of quality before release. You will be responsible for developing and implementing testing strategies, mentoring team members, and collaborating with cross-functional teams to deliver exceptional results.

Join SKELAR, a pioneering venture builder committed to establishing international tech businesses. We partner with co-founders to assemble strong teams that excel in global markets.Currently, SKELAR manages a diverse portfolio of businesses across various sectors, from EdTech to marketplaces. Our ventures have been recognized as top startups and product companies in Ukraine, featuring prominently in AppStore rankings and creating platforms used by millions. Notable media outlets like TechCrunch and Wired have covered our businesses.We take pride in our robust team of over 1,000 specialists, each possessing exceptional expertise and ambitious goals. Our people are our greatest asset, and we strive to build businesses alongside the best talent available.We are currently seeking a Golang Backend Team Lead for PawChamp, a mobile application and online platform designed for dog owners. PawChamp enables pet parents to train their dogs and learn more about care and training through 24/7 chats with experts, the AI companion Pawchie, and educational materials developed in collaboration with dog trainers. Our aim is to provide personalized daily lessons covering all aspects of dog training, from basic commands to addressing behavioral issues. Our strategic goal is to become the leading player in the global online dog training market, fulfilling all needs of pet parents and their dogs beyond training.In October 2025, we earned the title of Product of the Day on Product Hunt.App Store rating: 4.8Intro video about the product: https://www.youtube.com/watch?v=D3vURwhmufgKey Challenges:Enhancing the backend for our mobile products and the PawChamp web platform.Leading, coordinating, and developing the backend development team.Collaborating with stakeholders.Ensuring high code quality and adherence to best development practices within the team.Interacting with adjacent teams to improve system component interaction and optimize processes.Enhancing code, architecture, services, and development approaches.What We Value:

Join Jacobs Douwe Egberts as a Plant Initiative Lead in Lviv, where you will spearhead initiatives aimed at enhancing operational efficiency and product quality within our esteemed quality management department. This pivotal role requires a strategic thinker with a passion for continuous improvement and a strong background in quality management.

TENTENS Tech is a partner IT company of SKELAR — a Ukrainian venture builder dedicated to constructing international tech businesses.We create social discovery platforms serving over 20 million users globally. Our momentum and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Today, the TENTENS Tech team comprises over 250 individuals, each acting as a CEO in their role, impacting collective outcomes. We operate in a 10/10ths style: staying focused on our goals, asking the right questions along the way, and never settling for 'good' — only maximum performance and a bit more. If you identify with this description and are ready to accelerate with us — let’s connect!We are currently seeking a Growth Operations Lead to elevate our performance standards together.Key responsibilities in this role include:Ownership of the Online Reputation Management business directionManagement of a team of 10+ top specialistsOperational excellence: building and optimizing processes in an operations-heavy environmentEstablishing a framework for hypothesis testing and scaling successful outcomesYour influence will extend to:Process architecture, functions, and organizational structureBusiness outcomes of the unitTarget metrics, planning, and decision-makingWhat we value:Experience in building processes and teams in an operations-heavy environmentExperience managing a business unitData-driven mindsetLeadership skills and people management: driving the team while formulating ambitious plans and providing space for them to choose their tools for executionPreferred qualifications:Experience in SERM/ORM/SEO domainsWhat you will gain with us:Access to internal clubs in professional domains: reputation, marketing, development, finance, recruitment...

Join the dynamic team at ELEKS within our Quality Assurance Office, as we seek a talented and driven Strong Middle / Senior Automation Test Engineer (Python) to work on exciting projects in Ukraine, Poland, Croatia, and Argentina. ABOUT THE PROJECT This role involves working on a cutting-edge web-based platform designed for financial advisors. The client portal empowers advisors to tailor the user experience by enabling or disabling various features and functionalities for each client.

Sigma Software is looking for a Middle/Senior Test Engineer in Lviv. This position centers on software quality assurance, working alongside skilled colleagues to deliver reliable solutions. Role overview The Test Engineer will help verify software products meet high standards before release. Expect to collaborate with other professionals, share insights, and contribute to projects that make a difference. What you will do Test software solutions to ensure quality and reliability Work closely with developers and other team members Apply current testing methodologies and tools Requirements Experience in software testing (middle or senior level) Strong teamwork and communication skills Interest in learning and applying new technologies

Sigma Software is hiring a Middle/Senior Test Engineer in Lviv. This role centers on maintaining high standards for software quality and performance across a range of projects. What you will do Test software solutions to verify functionality and reliability Work closely with development teams to identify and resolve issues Contribute to quality assurance processes for ongoing and new projects Who we are looking for Experience in software testing or quality assurance Interest in improving software quality and performance Motivation to work on innovative projects with a collaborative team This position is based in Lviv and offers the chance to influence the quality of Sigma Software's products.

Join our dynamic team as a Staff Application Engineer where you will have the opportunity to leverage your technical expertise in a collaborative environment. Contribute to the development and enhancement of innovative applications that drive the success of our advanced semiconductor solutions. Your role will be pivotal in providing technical support and guidance to clients, ensuring a seamless integration of our products into their systems.