Mid-Level Windows Engineer | C#/.NET Applications

Join NordLayer as we innovate cybersecurity solutions that grow with our clients.Our platform is designed for seamless integration into any tech stack, enabling modern teams to excel without the burden of security concerns. With the trust of over 11,000 global companies, NordLayer provides robust protection for users across the globe.Your contribution? Ensur…

Join Saily, where we revolutionize mobile connectivity for travelers. Enjoy uninterrupted, secure mobile data across 200+ destinations without the hassle of roaming fees or plastic SIM cards. With millions of satisfied customers and countless travelers using our services, we are committed to delivering the best possible product.At Saily, we embrace an AI-native Product Engineering culture that empowers our engineers to:Take ownership of projects from conception to deployment.Deliver innovative features without the need for overly detailed specifications.Collaborate closely with product managers, designers, data analysts, and fellow engineers.Work within dynamic, self-sufficient teams.Leverage AI agents for enhanced specifications, coding, analysis, testing, and iteration.Achieve double the output of a traditional Senior Engineer through AI assistance.Enhance our internal agent network and development processes.Be adaptable across the technology stack as required.Prioritize user satisfaction and business success over mere productivity metrics.Our Values: We prioritize growth over comfort, contributions over hierarchy, and meaningful impact over rigid processes. At Saily, we empower talented individuals with the context, autonomy, and AI tools they need to excel at their work.

Ignitis Group seeks a Quality Control Engineer for the Inventory Control Team in Klaipeda. The role centers on upholding the accuracy and integrity of inventory management processes. Main responsibilities Monitor inventory management procedures to ensure both accuracy and compliance with company standards. Collaborate with other departments to identify process gaps and suggest practical improvements. Apply quality control measures aimed at strengthening inventory reliability. Collaboration This position involves working closely with cross-functional teams. The goal is to address operational challenges and refine processes that keep inventory control effective.

Role Overview Tide is hiring a Senior Staff Software Engineer to help shape the Agentic Platform. This position centers on building software that helps businesses run more smoothly and efficiently. The work involves leading technical efforts and setting direction for complex projects. Main Responsibilities Design, develop, and refine high-performance systems for the Agentic Platform Work closely with teams from different disciplines to deliver effective solutions Drive technical decisions and guide the development process from concept to deployment Location This role is based in Lithuania.

Flo Health creates health and fitness apps focused on women's health. The company’s flagship app has reached over 500 million downloads and supports more than 80 million monthly users worldwide. With $200 million in backing from General Atlantic and a $1 billion valuation achieved in 2024, Flo Health continues to grow its reach and reputation. The app holds top ratings in the App Store’s health category and counts 7 million paid subscribers. Role overview The Lead Android Engineer will help shape the mobile experience for millions of users. Flo Health’s app serves one in four women aged 18–44 in the U.S. and is available in more than 100 countries. Machine learning and AI power its cycle predictions and personalized health insights, making accuracy and credibility central to the product. What you will do Develop and refine large-scale Android applications with responsive, accessible, and privacy-focused interfaces. Collaborate in a cross-functional team throughout the full mobile development lifecycle, from concept to release and iteration. Own the delivery of value, not just features, and contribute to meaningful improvements in women's health technology. Lead product initiatives, experiment with new ideas, and implement solutions that have real impact beyond routine backlog work. Drive product evolution by adapting to user needs and championing improvements. Who Flo looks for Flo seeks engineers who are pragmatic problem solvers, comfortable with change, and deeply invested in the quality of their work. The team values those who want to make a tangible impact and thrive when given trust and freedom to innovate. Location This role is based in Vilnius.

Teltonika’s Networking Solutions Business Unit in Kaunas develops industrial and enterprise connectivity devices for sectors like Industry 4.0, Smart Cities, and Green Energy. The team builds routers, switches, gateways, and modems, focusing on reliable and scalable networking products. Role overview This mid-level QA Automation Engineer position centers on designing, developing, and maintaining automated test suites for WebUI, API, and hardware-integrated systems. The role supports both software and hardware quality by collaborating closely with engineering teams to identify, reproduce, and document defects. What you will do Create and update automated test suites for various system components Work with engineers to pinpoint and document software and hardware issues Monitor automated test runs, including smoke, regression, and nightly pipelines Troubleshoot test failures and maintain the reliability of test cases Document defects with clear reproduction steps and evidence Maintain thorough documentation for automation changes and test coverage Participate in discussions about test strategy and suggest automation improvements Requirements Minimum 2 years of experience testing both frontend and backend systems Practical experience with automation frameworks such as Selenium, Playwright, or Appium Familiarity with Python Comfortable using Linux environments Strong problem-solving and communication skills, with the ability to analyze test failures Proactive approach and attention to detail in improving test coverage and pipeline stability Basic knowledge and practical experience in computer networks Understanding of CI/CD pipelines and automated testing integrations Experience with Git and modern version control workflows English fluency at B2 level or above Benefits Growth opportunities within a rapidly expanding company Work on projects centered around industrial networking devices Support for learning and development, including training, conferences, and business trips Collaborative culture that values curiosity and knowledge sharing Flexible schedules and health insurance Company-sponsored sports activities, such as basketball

We are seeking a dedicated IT Service Management (ITSM) Process Manager to join our dynamic team at Ignitis Group. In this role, you will be responsible for overseeing IT service management processes, ensuring optimal performance, and aligning IT services with business needs.You will collaborate with various teams to implement best practices in ITSM, driving continuous improvement and operational efficiency. Your expertise will be essential in maintaining high service quality and customer satisfaction.

Proxy Network EngineerWe are seeking a talented Proxy Network Engineer who is passionate about creating innovative proxy infrastructure from the ground up. This position is not about configuring existing solutions; it’s about building robust systems that include residential networks, ISP proxies, rotation systems, and session management. If you're skilled in distinguishing between high-level integrations and developing a reverse proxy from scratch, this opportunity is tailored for you.About SearchApiSearchApi provides a real-time SERP API that delivers structured data from over 100 search engines and data sources, including Google Search, Google Shopping, Google Jobs, Bing, Baidu, YouTube, and Amazon. Our services support production workloads for Fortune 500 companies and dynamic startups that require dependable search data at scale.As a lean and profitable bootstrapped team, we operate without the pressures of venture capital, enabling our engineers to focus on delivering real products to our customers. Why Join Us?Build from scratch. Design and implement unique proxy infrastructure instead of merely integrating existing tools.Greenfield project. You will have the opportunity to create the architecture from the beginning without dealing with legacy systems.Deep technical work. Engage with networking, protocols, and performance optimization—this is where the real challenges lie.Real scale. Your solutions will need to manage billions of requests effectively.Bootstrapped and Profitable. We prioritize our customers' needs over investor expectations.We are looking for an individual who can develop high-quality proxy infrastructure. While we currently utilize existing solutions, we want someone who understands their constraints and can innovate beyond them. Tech StackLow-level networking (TCP/UDP, sockets, connection handling)HTTP/HTTPS/SOCKS5 protocolsHTTP/2, HTTP/3Reverse proxy implementation (not just configuration of nginx/squid)Linux networking stackCloud infrastructure (provider TBD based on IP policies and networking speed)Familiarity with Terraform is a plus (for autoprovisioning)Our daily tools include Cursor, Claude, ChatGPT, GitHub, and Slack. You Control AI, AI Doesn't Control YouBy leveraging AI tools, we accelerate our shipping processes. Join us to work at the forefront of technology!

Join Flo Health as a Cloud Security Engineer and play a pivotal role in safeguarding our cloud infrastructure. Collaborate with cross-functional teams to design, implement, and maintain security protocols that protect sensitive data. This is an exciting opportunity to work in a fast-paced environment where your expertise will directly contribute to the security and integrity of our cloud solutions.

Join NordLayer as we revolutionize cybersecurity for businesses of all sizes.Our innovative platform enables teams to operate efficiently without compromising security. With the trust of over 11,000 companies worldwide, NordLayer integrates seamlessly with various tech stacks to protect users globally.Your Role: As a Senior Site Reliability Engineer focusing on observability, you will be pivotal in ensuring our infrastructure's health and performance. You'll be tasked with designing robust monitoring systems, enhancing signal quality, minimizing alert fatigue, and collaborating with data teams on anomaly detection strategies. Your insights will shape how we perceive and optimize our distributed systems.

At payabl, we empower businesses to thrive through innovative payment solutions and comprehensive banking services. Our mission is to broaden our extensive portfolio of global financial services, all conveniently available on our platform, payabl.one. As a licensed financial entity with principal membership in card schemes, we excel in global payments and offer businesses the advantage of multi-currency accounts.About the Role:We are seeking a dedicated Underwriting Manager to join our team. This pivotal role involves steering our risk management processes by overseeing the complete underwriting workflow, which includes merchant assessments, onboarding evaluations, and consistent portfolio monitoring. The ideal candidate will blend strategic insight with practical analytical skills, proficiently analyzing transaction data to pinpoint suspicious activities and ensuring compliance with card scheme regulations and internal risk policies.This role requires ownership of underwriting processes and collaboration across various departments including Risk, Compliance, Operations, and Sales, to continuously enhance underwriting frameworks, improve documentation, and uphold our data-driven approach to risk management. The successful candidate will confidently manage underwriting practices while fostering open communication and alignment with other teams to mitigate financial risks and protect the business.Location: Limassol, Cyprus or LithuaniaReporting Line: Head of Underwriting & Monitoring

Join our innovative team at epsog as an Information Systems Engineer, where you will play a vital role in designing and implementing cutting-edge information systems. Your expertise will help enhance our operational efficiency and drive our technological evolution.

Join our rapidly expanding R&D team as a Quality Assurance Engineer within the Quality Assurance Department in either Vilnius or Kaunas. In this pivotal role, you will work alongside talented teams to validate embedded firmware, confirm hardware functionality, and uphold our commitment to delivering devices that exemplify the highest standards of reliability, performance, and compliance. The specific products you will engage with may vary, and you will utilize lab equipment and proprietary tools depending on the team you join. We look forward to discussing the intricate details with you during the recruitment process!At Teltonika, our telematics business unit specializes in the development and production of user-friendly GPS tracking devices designed to enhance fleet management across diverse sectors, including logistics, agriculture, car sharing, and construction. We leverage cutting-edge technologies to establish new benchmarks within the telematics industry.Why choose Teltonika Telematics?Play a vital role in shaping the development of physical hardware products from their prototype phase through to mass production.Engage in challenging and impactful projects focused on a diverse array of telematics products.Work with innovative technologies that are yet to be widely adopted in the industry.Become part of a supportive, knowledge-sharing culture that encourages curiosity and growth.Flourish in a dynamic work environment that offers opportunities for professional development and adaptation.Your responsibilities include:Crafting detailed and comprehensive test scenarios and cases based on functional requirements, with a strong emphasis on embedded systems, firmware, and hardware validation, alongside periodic support for related software application testing.Executing extensive test plans for embedded devices, conducting regression, functional, integration, system, exploratory, and various other testing types.Developing and implementing automated testing for device firmware and hardware using internal tools, concentrating on areas where automation yields the most significant benefits.Analyzing test results and performing root cause analysis on identified defects, providing developers with actionable insights.Utilizing lab equipment and internally developed tools to simulate real-world operating scenarios in a controlled environment for testing and debugging purposes.Regularly using Jira and Zephyr Scale tools for test planning and bug tracking.Collaborating closely with cross-functional teams to identify, reproduce, analyze, document, and verify issues.Partnering with Product Managers and Developers during the design phase to pinpoint potential logic gaps early on.Creating clear reports and documentation, presenting identified defects to the relevant teams.Sharing your fresh perspective to enhance testing processes and methodologies.

About Fellow At Fellow, we are dedicated to transforming the home coffee brewing experience with our exquisitely designed kettles and grinders. More than just products, we are a brand that embodies innovation, community, and a rich culture surrounding coffee. We believe that brewing great coffee is not only about the end result but also about the journey, the rituals, and the connections that enhance that experience. We are currently seeking a Senior Embedded Software Engineer - Hardware Control Systems to join our team in developing and optimizing firmware for our cutting-edge hardware products. Please note that this position requires an in-office presence at our Vilnius, Lithuania location.

Join NordLayer, where we are redefining cybersecurity to scale with your business.Our toggle-ready platform empowers modern teams to excel while eliminating security challenges. With over 11,000 global clients, NordLayer seamlessly integrates into any tech stack to safeguard users across borders.Your role: Play a pivotal part in ensuring businesses remain secure and forward-thinking through advanced network security solutions.As part of our Infrastructure department, you will influence and monitor changes, provide essential support, and deliver innovative software-defined solutions.As a DevOps Engineer, you will be key in enhancing, maintaining, and automating our organization's infrastructure and CI/CD processes. You will collaborate with Senior Engineers and cross-functional teams to implement DevOps best practices, support reliable and scalable cloud solutions, and ensure efficient software delivery. This is an exciting opportunity to develop in a dynamic environment while contributing to infrastructure automation and improvement initiatives.

Join Nord Security in Shaping a Safer Cyber Future.At Nord Security, we empower individuals and organizations to reclaim control over their online security, privacy, and data. Our diverse range of products—from VPNs and password managers to threat intelligence solutions and eSIMs for travelers—are designed to transform intricate challenges into trusted solutions utilized by millions globally.In this pivotal role, you will play a crucial part in helping users navigate and secure their online lives.

Join a leader in online security.Are you a problem solver with a passion for technology? Become part of the innovative team at Nord Security, the creators of the world’s fastest VPN, Threat Protection Pro, and the NordLynx protocol. We empower individuals with tools that prioritize privacy, security, and control over their online presence.Your Role: Contribute to a mission that helps millions regain control over their online security, privacy, and data.As a member of the Nord Checkout team, you will play a crucial role in developing and maintaining essential services that facilitate the final step of the user purchase journey. Your responsibilities will include scaling services and implementing new features to ensure a secure, efficient, and enjoyable user experience. Additionally, you will support other teams by providing access to vital user purchase data.

Join Saily, where we simplify staying connected while traveling. Forget about roaming fees and plastic SIM cards—experience fast and secure mobile data in over 200 destinations. With millions of paying customers and hundreds of thousands of travelers exploring Saily at any moment, we are redefining mobile connectivity. Our product development thrives on an AI-native Product Engineering culture. Here’s how we operate: The Engineer is the creator, tasked with addressing customer challenges from concept to deployment. AI Agents support Engineers by automating routine tasks and writing code, allowing Engineers to focus on impactful work. Every team member is encouraged to suggest improvements to optimize the use of AI Agents and implement changes. Curiosity, continuous learning, and knowledge sharing are our collective responsibilities. Our primary focus remains on ensuring a seamless and enjoyable journey for our customers. At Saily, we prioritize growth over comfort, contribution over hierarchy, and impact over process. We empower talented individuals by providing context, autonomy, and innovative AI tools to help them excel. We are excited to welcome motivated junior engineers to our team. Impact is not solely defined by years of experience; it is driven by your eagerness to learn, discipline, and innovative mindset. At Saily, you will have the opportunity to build and influence your surroundings. What can you expect? Hands-on experience with AI-assisted software development, access to a wealth of learning resources, and the chance to work on a product that is not only successful but also technically rewarding. Bring your skills and vision to Saily and make your mark!

Join the Vanguard of Online Security!Are you a passionate problem-solver eager to innovate? Be part of the team behind Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN. We empower users with enhanced privacy, security, and control over their online presence.Your Role: Make a significant impact in helping millions reclaim their online security, privacy, and data.Join our Notification Center Team - Pioneering the Future of In-App Communications!As a Senior Backend Developer on our Notification Center Team, you will be integral in designing and maintaining the microservices that facilitate in-app notification delivery. Our team is essential to numerous features across various teams that depend on effective notification systems. Collaborating closely with other Nord teams, you will help chart our scalable future.Are you prepared to tackle challenges related to scalability, code quality, and maintenance? Your expertise will ensure that our services remain stable and functional, acting as the hidden backbone of many NordVPN, NordPass, and NordLayer features. Join our talented team of engineers dedicated to technical excellence!Key Responsibilities:Develop and enhance microservices to meet the needs of millions of users across NordVPN and related products, ensuring optimal scalability, stability, and security.Collaborate with cross-functional teams to promote seamless integration and functionality of microservices throughout NordVPN's product suite, enhancing the user experience.Mentor team members and foster technical best practices within the organization.Contribute towards shaping the team's vision and long-term objectives.Engage in research and development activities to explore and implement cutting-edge technologies as needed.

Join Saily, where we're revolutionizing connectivity for travelers. Say goodbye to roaming fees and cumbersome SIM cards; enjoy fast and secure mobile data in over 200 destinations. With millions of satisfied customers and countless travelers using Saily simultaneously, we are committed to enhancing the travel experience.At Saily, we cultivate an AI-native Product Engineering culture that empowers our engineers to take ownership from concept to deployment:Engineers are builders, addressing customer challenges comprehensively.AI Agents facilitate code generation and automate repetitive tasks, allowing engineers to focus on impactful work.Everyone is encouraged to contribute ideas that enhance Saily’s effectiveness by leveraging AI.We emphasize curiosity, continuous learning, and knowledge sharing.Our primary focus remains on providing customers with a seamless, connected travel experience.We value growth over comfort, contribution over hierarchy, and impact over process. At Saily, we empower intelligent individuals with the context, autonomy, and AI tools to excel in their roles.