Lead Backend Developer at Quantum Systems GmbH | Kyiv

Join our dynamic team based in Kyiv, where you will work full-time in our office, with a convenient shuttle service available from the nearest metro station.About the RoleWe are on an ambitious journey to expand our R&D team, and this position is pivotal in our newly formed R&D unit. We have allocated all necessary resources and authority to help you succeed in meeting our goals.This is a fantastic opportunity for a professional who:Is passionate about working with cutting-edge technologies.Is eager to take an active role in building R&D processes from the ground up.Wants their contributions to directly support Ukraine’s Victory.Your Daily MissionPropose innovative prototype designs for testing new or enhanced product components.Create schematic, functional, electrical, and other types of diagrams.Prepare technical specifications for ordering prototype components.Actively define technical requirements for cross-functional teams.Configure component software for testing purposes.Participate in prototype testing and document results for informed decision-making.Assist in creating product documentation.Support the transition process from prototype to mass production.Suggest creative solutions and employ innovative components to enhance product efficacy.

This position is located in the vibrant city of Kyiv, Ukraine, where you will be expected to work full-time in our office. A convenient shuttle service is available from the nearest metro station.We are on the lookout for a Senior Design Engineer to become a vital member of our R&D team, focusing on the development of cutting-edge unmanned aerial vehicles (UAVs). Your key responsibilities will include designing and prototyping UAV assemblies and components, establishing operating principles and structural frameworks, component selection, and system integration into cohesive solutions.This opportunity is ideal for individuals who thrive on transforming innovative concepts into high-tech products. If you possess a keen attention to detail, a passion for precision engineering, and enjoy collaboration, you will find fulfillment in contributing to advancements in aerospace and UAV technology.Your Daily Responsibilities:Design & DevelopmentDesign UAV assemblies and structural components.Select and integrate components and equipment into systems.Choose suitable materials and manufacturing technologies.Prepare production documentation, including drawings, specifications, and 3D models.2. Prototyping & TestingConstruct prototypes and perform functional tests on systems and equipment.Modify designs for manufacturability and collaborate with production teams.3. CollaborationEngage closely with manufacturing departments, subcontractors, and testing teams.

Quantum Systems is at the forefront of pioneering unmanned solutions that revolutionize operations across air, land, and sea. Our innovative systems, ranging from advanced aerial drones to robust underwater and ground platforms, integrate state-of-the-art hardware with AI-enhanced software, ensuring seamless control and real-time data insights. With a commitment to excellence, we serve a diverse array of clients in defense, security, and the public sector worldwide, consistently redefining mission versatility and operational performance.Since 2022, we have proudly supported Ukraine with our local office.As an IT Support Specialist, you will play a crucial role in maintaining the stability and security of our network environment, ensuring our technological infrastructure operates at peak performance.This is a full-time office position. Candidates must be based in Kyiv.Your Daily Responsibilities:Develop and manage wired and wireless networks while guaranteeing network security.Configure essential network IP services including DNS, DHCP, SMTP, SSH, and FTP.Set up and oversee network protocols and technologies such as TCP/IP, VPN (IPsec, SSL), BGP, OSPF, EIGRP, NAT, Port-security, QoS, VLAN, and STP.Support and configure network equipment from leading brands such as MikroTik, Ubiquiti, Cisco, and FortiNet.Implement and maintain video surveillance systems from manufacturers like Hanwha, Dahua, and Hikvision.Manage firewalls and IDS/IPS systems to enhance security.Provide user support through remote access tools like RDP, TeamViewer, and Anydesk.Monitor and analyze network traffic using specialized analytical tools.

Quantum-Systems is at the forefront of developing next-generation drone solutions for aerial, ground, and maritime applications. From advanced aerial drones to underwater and terrestrial platforms, our systems integrate cutting-edge hardware with AI-driven software, enabling seamless management and real-time data analytics. Trusted by clients across the defense, security, and public sectors worldwide, we are redefining versatility and mission efficiency.Since establishing a local office in Ukraine in 2022, Quantum-Systems has solidified its position as a reliable partner in the region.As a Prototyping Technician, you will be responsible for assembling prototypes and test samples.This is a full-time, in-office position. Candidates must be located in Kyiv.Your Daily Mission:Conduct manual assembly of UAV prototypes according to technical documentation and instructions from the prototyping engineer;Install, connect, and test electronic components (autopilots, communication modules, power supplies, navigation systems, sensors, etc.);Participate in testing assembled prototypes, document results, and assist in conducting analysis;Perform minor repairs, replacements, or adjustments of components during testing;Propose improvements in design or assembly methods where optimization opportunities exist;Assist in preparing products for transfer to subsequent testing phases or mass production.

Join our dynamic team in Kyiv as a Linux Software Engineer and be at the forefront of drone technology! This full-time position requires you to work in our office, with a convenient shuttle service available from the nearest metro station.About the RoleAs a vital member of our System Architecture team, you will contribute to the development and maintenance of Linux-based systems that drive our innovative unmanned aerial vehicles at Quantum-Systems. Collaborating with a talented team of three, you will play a pivotal role in advancing drone technologies.You will engage closely with stakeholders from Avionics, Systems Engineering, and Flight Testing to ensure seamless integration of hardware, third-party software, and onboard applications into a robust Linux platform. Your work will ensure a reliable, scalable, and mission-critical software environment, making a significant impact on our operations.Your Daily Responsibilities:Maintain and develop new Linux applications for unmanned aircraft.Design and coordinate interfaces between teams while documenting architecture and design decisions.Integrate hardware and third-party software into the Linux system, collaborating with suppliers and internal teams.Conduct thorough testing of applications, including unit tests, integration tests, functional tests, and acceptance tests.Analyze flight logs from test flights and real-world customer issues.Debug and resolve software and hardware issues related to the Linux system.Enhance the build system, pipeline, and tooling, including creating releases with detailed release notes.Work within an agile environment and adhere to the defined development process.

Join our dynamic team as a Support Service Manager at Quantum-Systems, located in the heart of Kyiv. This role requires your presence in the office 3-4 days a week, as we believe in the power of collaboration. For your convenience, we offer a shuttle service from the nearest metro station.You will have the flexibility to choose between two shifts: either 9:00 AM to 6:00 PM or 2:00 PM to 11:00 PM (the late shift can be completed from home).As a Support Service Manager, you will be pivotal in providing exceptional support to our clients who utilize our cutting-edge Unmanned Aerial Vehicles (UAVs) in critical operations. Your dedication will contribute significantly to customer satisfaction and operational excellence.Your Daily Responsibilities Will Include:Delivering user support through inbound chats and calls.Identifying client issues and documenting cases in our CRM system.Analyzing user challenges and providing effective solutions.Coordinating with other departments to resolve user issues and prepare reports for pertinent teams.Preparing necessary documentation for the receipt and issuance of UAVs and components for repair.Drafting reports and liaising with the manufacturer regarding incidents.

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

Quantum Systems is at the forefront of developing next-generation unmanned solutions across air, land, and sea. Our innovative aerial drones and advanced underwater and ground platforms merge state-of-the-art hardware with AI-driven software to provide seamless control and real-time data insights. Serving clients in defense, security, and the public sector globally, we are reshaping mission versatility and performance.Since establishing our local office in Ukraine in 2022, Quantum-Systems has been a strong supporter of the country. We are currently seeking a Design Engineer to join our dynamic R&D team to help create the next generation of unmanned aerial vehicles (UAVs). In this role, you will participate in the entire design process—from concept development to product realization—working on cutting-edge technologies and collaborating with cross-functional teams.If you are passionate about transforming innovative ideas into high-tech products, detail-oriented, and thrive in a collaborative environment, we invite you to contribute to advancements in aerospace and UAV technology.This is a full-time, office-based position located in Kyiv.

About Quantum-SystemsQuantum Systems is a pioneering company focused on the development, design, and manufacturing of unmanned aerial systems (sUAS). Our advanced reconnaissance drones, the Quantum Systems Vector, have been operational in Ukraine since May 2022. To date, over 200 systems have been deployed through the German Enablement Initiative, with a total of 500 drones anticipated by year-end.Commitment to Supporting UkraineSince the onset of the conflict, Quantum Systems has been dedicated to supporting Ukraine. We are expanding our commitment by establishing a new local manufacturing facility, which will be our second site and is projected to employ around 100 individuals by the end of the year. Over the next two years, we plan to invest up to six million euros. Our support includes providing reconnaissance drones to the Ukrainian Armed Forces, alongside operating a local service, support, training, and logistics center staffed by 25 Ukrainian employees who are training drone pilots and integrating technological advancements into reconnaissance systems.

TENTENS Tech, a partner IT company of SKELAR, is at the forefront of building international tech businesses from Ukraine.We create innovative social discovery platforms that serve over 20 million users globally. Our impressive pace and scale are fueled by deep expertise in analytics, high-load systems, and performance marketing.Our team at TENTENS Tech consists of over 250 professionals, each acting as a CEO in their role and contributing to our collective success. We operate with a 10/10ths mentality: we keep our sights on our goals, ask the right questions along the way, and never settle for 'good enough' — we strive for excellence and beyond. If you resonate with this mindset and are ready to accelerate with us, we want to meet you!We are currently seeking a Backend Team Lead to help elevate our standards of excellence.

TENTENS Tech is looking for a Backend Team Lead to support its MarTech initiatives in Kyiv. This leadership position centers on guiding backend development and helping the team achieve higher performance. What you will do Lead and mentor backend engineers working on MarTech projects Guide technical decisions and support the team’s growth Promote high standards and help the team reach new levels of performance About TENTENS Tech TENTENS Tech partners with SKELAR, a Ukrainian venture builder focused on building international tech businesses. The company’s main products are social discovery platforms used by more than 20 million people worldwide. The team includes over 250 members who are encouraged to take ownership and show initiative. TENTENS Tech values focus, thoughtful questions, and a drive to exceed expectations. Ambition and a commitment to excellence are at the core of the company culture.

Join Skelar, a leading venture builder dedicated to crafting innovative IT products that resonate on a global scale.We are currently seeking a Senior/Lead Backend Engineer to spearhead our martech initiatives within our partner company, Duomo. This platform is designed for personal and spiritual development, rooted in Christian values, providing users with customized plans to address pivotal life questions.At Duomo, we strive to create a global community where millions of Christians, organizations, mentors, and pastors can connect and grow together.Our achievements speak volumes:Users love us: Our average ratings across App Store, Google Play, and Trustpilot stand at an impressive 4.7/5.Rapid growth: Over the past year, our team has expanded fourfold.Trusted by Meta: Our partnership with Meta underscores the quality and trustworthiness of our product.We are evolving rapidly, offering every team member the opportunity to grow both professionally and personally. Our commitment to learning includes mentorship, internal education initiatives, and access to external courses.Additionally, we are integrating AI tools throughout our processes, using MCP server integrations, AI Code Review, and automation to enhance creativity and innovation.

Quantum Systems specializes in innovative unmanned solutions that span air, land, and sea. Our advanced platforms, including aerial drones and underwater systems, integrate state-of-the-art hardware with AI-driven software, resulting in seamless control and real-time data insights. With a commitment to our clients in defense, security, and the public sector around the globe, we are setting new standards for mission versatility and performance.Since establishing our local office in Ukraine in 2022, Quantum Systems has demonstrated unwavering support for the country and its people.This position is ideal for individuals who possess a strong passion for technical writing, exceptional attention to detail, and the ability to convert complex engineering concepts into understandable documentation. If you thrive in a collaborative setting and are eager to contribute to advancements in aerospace technology, we would love to hear from you.This is a full-time office-based role, and candidates must be located in Kyiv.Your Daily Responsibilities:Documentation DevelopmentCreate and maintain User Manuals for UAV pilots, covering system descriptions, ground control station operations, antennas and communication equipment, flight preparation, piloting rules, and emergency procedures.Develop Maintenance Documentation including inspection schedules, service procedures, and component replacement guidelines (e.g., propellers, motors, batteries).Prepare numbered documentation such as forms, passports, and labels.2. Collaboration & UpdatesCollaborate closely with design engineers, pilots, customers, and research institutions.Ensure timely updates and revisions of documentation.Create diagrams and illustrations to enhance manuals.

TENTENS Tech is a strategic partner of SKELAR, a Ukrainian venture builder dedicated to developing international tech businesses.We create social discovery platforms for over 20 million users globally. Our pace and scale are supported by deep expertise in analytics, high-load systems, and performance marketing.Today, the TENTENS Tech team consists of more than 250 professionals, each acting like a CEO in their role and contributing to our collective success. We operate with a 10/10ths mindset: aiming for excellence, asking the right questions along the way, and never settling for 'good enough'—we strive for maximum impact and beyond. If this resonates with you and you’re ready to accelerate with us—let’s connect!We are currently seeking a Backend Team Lead to help elevate our results.

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.

TENTENS Tech is a dynamic IT partner of SKELAR, a Ukrainian venture builder focused on creating international tech businesses.We design social discovery platforms catering to over 20 million users globally. Our rapid pace and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Our team at TENTENS Tech comprises over 250 professionals, where each member acts like a CEO in their role, contributing to our collective success. We operate with a 10/10ths mindset: we stay focused on our goals, ask the right questions along the way, and never settle for 'good enough'—only maximum performance and continuous improvement. If you resonate with this description and are ready to accelerate with us, let's connect!We are currently seeking a Backend Engineer (PHP) to elevate our performance standards together.

Quantum Systems is at the forefront of next-generation unmanned solutions that span air, land, and sea. Our innovative systems, which range from advanced aerial drones to underwater and ground platforms, integrate state-of-the-art hardware with AI-driven software to deliver seamless control and real-time data insights. With a reputation for excellence in defense, security, and public sector industries worldwide, we are committed to redefining mission versatility and performance.Since establishing our local office in Ukraine in 2022, Quantum-Systems has been a steadfast supporter of the nation.This position is ideal for individuals who have a passion for transforming engineering concepts into optimized manufacturing processes. If you are detail-oriented, thrive in a collaborative environment, and aspire to contribute to aerospace technology innovations, we encourage you to apply.This is a full-time, office-based role, and candidates must be located in Kyiv.Your Daily Responsibilities:Develop technological processes for the manufacturing of composite parts.Create detailed process documentation, including technological cards, instructions, and routing sheets.Optimize workflows to minimize defects and production time.Monitor and provide support throughout all production stages.Ensure compliance between actual production and approved technologies.Identify and rectify technological defects.Analyze errors and suggest improvements.Prepare acceptance reports and testing protocols.Develop control charts for finished products.Select appropriate PPE and auxiliary materials.Conduct technical briefings for production staff.Collaborate with design engineers, production supervisors, and quality engineers.

SKELAR is a prominent Ukrainian venture builder dedicated to developing international tech businesses. Together with our co-founders, we assemble strong teams poised to achieve success in global markets.Currently, SKELAR manages numerous businesses across various niches, from EdTech to marketplaces. Our companies consistently rank among Ukraine's top startups and product companies, achieving high positions in the App Store and developing platforms used by millions worldwide. Major media outlets, including TechCrunch and Wired, feature SKELAR's businesses.We take pride in our robust team of over 1,000 specialists, each bringing exceptional expertise and ambitious goals. Our people are our most valuable asset, and we aim to build businesses with the best talent available.Storyby is an entertainment tech company that transforms original ideas into captivating stories told through novels, vertical films, and immersive audiobooks. Over 10 million people globally engage with our content.In the Storyby ecosystem, we offer three key products:AlphaNovel – a platform for novels and immersive audiobooks featuring over 20,000 works.StorybyWriter – a publishing platform for more than 25,000 authors, bringing the strongest stories to life for DramaShorts.DramaShorts – a streaming service for vertical cinema with 1 million fans monthly, featuring in-house productions across Europe and the USA.We are currently expanding our team and looking for a Backend Engineer who will be a vital part of our team, helping the business grow and reach new heights.Your responsibilities will include:— Implementing and maintaining API endpoints for web and mobile: HTTP Cloud Functions, validation, OpenAPI/Swagger.— Optimizing performance: profiling, caching, and ensuring correct indexing for swift operation.— Ensuring quality and reliability: unit and integration testing (Jest), logging, tracing, alerts.— Conducting code reviews and upholding engineering standards in a monorepo (Nx, esbuild, CI).— Engaging in foundational infrastructure work using Terraform and participating in incident analysis.What we value:— You possess 3+ years of backend development experience with Node.js and TypeScript/JavaScript.— You have a strong understanding of SQL beyond basic SELECT queries, including indexing, profiling, and optimization.

Quantum Systems GmbH develops unmanned solutions for air, land, and sea operations, combining advanced hardware with AI-driven software. The company delivers real-time data and precise control to defense, security, and public sector clients worldwide. Since establishing the Kyiv office in 2022, Quantum Systems has remained committed to supporting Ukraine. Role overview The Service Team Lead manages the Kyiv-based service team, focusing on high-quality repairs, process improvements, and the professional growth of engineers. This is a full-time, on-site position based in Kyiv. Main responsibilities Team leadership Direct and coordinate a team of service engineers and testers. Plan workloads, assign tasks, and set priorities to improve productivity. Mentor, onboard, and guide engineers in their development. Lead technical discussions and review complex cases to find solutions. Quality assurance Ensure all repairs and testing meet company standards. Monitor deadlines, SLAs, and overall service quality. Analyze recurring technical issues and drive improvements to reduce defects. Review and validate complex repairs involving electronics, UAVs, and modules. Process improvement Streamline workflows and introduce industry best practices. Maintain and update checklists, procedures, and technical documentation. Collaborate with Testing, Logistics, Procurement, and R&D teams. Track performance metrics and prepare reports on key KPIs. Technical involvement Help resolve complex engineering challenges as they arise. Make technical decisions in non-routine situations. Oversee repairs of UAVs, electronic modules, and power systems. Location: This position requires full-time, on-site presence at the Kyiv office.