Senior Backend Engineer | Go | Join Saily

At Saily, we are revolutionizing the way travelers stay connected by eliminating roaming fees and plastic SIM cards. Our service provides lightning-fast, secure mobile data across more than 200 destinations, ensuring millions of satisfied customers can browse effortlessly.To enhance our product for our users, we cultivate an AI-native Product Engineering cul…

About the Senior Backend Engineer Role The CTO Team at Wix in Vilnius is looking for a Senior Backend Engineer. This position focuses on designing and building scalable backend systems that support a wide range of web development tools. What You Will Do Develop and implement backend solutions to support Wix’s platform Work with cross-functional teams to improve and expand existing services Investigate and experiment with new technologies to advance the platform Contribute to backend architecture decisions Help shape product direction and technical strategy Location This role is based in Vilnius.

Role Overview Ignitis Group is looking for an IT Test Engineer in Vilnius. This role focuses on maintaining and improving the quality of software solutions. The position involves close work with software developers and other team members to support strong application performance. What You Will Do Design and execute test plans for software applications Identify, document, and track software defects Collaborate with developers to resolve issues and improve performance Location Vilnius

Join NordPass in Revolutionizing Password Security!At NordPass, we are committed to making password management easy and secure. Our mission is to ensure that logins are not just simpler but also safer. Be part of the team that powers NordPass—a trusted password manager utilized by over 7 million users and more than 10,000 companies worldwide, safeguarding their credentials, payment information, and sensitive data.Your Role: Contribute to enhancing the digital security of millions by developing innovative and secure login solutions.Key Responsibilities:Collaborate with cross-functional teams to ensure seamless integration and effective use of microservices across Nord Security’s product suite, enhancing user experience.Prioritize high-quality code delivery with a focus on scalability and security.Participate actively in technical and architectural discussions, refining processes and influencing the strategic direction of the product.Exhibit strong ownership and accountability for the development, maintenance, and quality of the product.Promote effective communication and collaboration among team members and cross-functional groups, including engineering, product, and design professionals.

Join the Omnisend Team!If you're looking for a workplace that values intelligence and collaboration over chaos and drama, Omnisend is the perfect fit for you. We pride ourselves on a culture where data drives our decisions, allowing us to focus on delivering impactful results without the distractions of micromanagement or excessive meetings. We believe in transparency, trust, and the power of feedback, fostering a professional environment where everyone contributes to our collective success. Our mission is customer-centric, and we are dedicated to solving real-world problems that help eCommerce brands flourish.The Expansion Product Team at Omnisend is pivotal in maintaining and enhancing the core systems that facilitate our business growth. This includes managing billing, pricing/monetization, and access scopes, ensuring our merchants have a seamless experience as they log in, upgrade plans, manage subscriptions, and obtain accurate invoices. In our Growth Value Stream, we focus on experimentation and efficiency, always looking for innovative ways to influence user behavior while maintaining a robust and scalable platform.We seek a Senior Full Stack Engineer with a strong preference for backend development, who is eager to take an active role in shaping and owning engineering solutions. The ideal candidate is self-motivated, brings thoughtful insights to discussions, challenges assumptions, and actively contributes to both technical and product decisions. You will work closely with product and engineering teams to build resilient systems and deliver impactful product changes in a timely manner.

Join Nord Security as a Low-Level Engineer specializing in server-side development. We are seeking a talented mid-senior level engineer to contribute to our innovative projects. In this role, you will be responsible for building and optimizing backend systems that support our world-class VPN services.The ideal candidate will have a strong understanding of low-level programming and a passion for creating efficient, robust server-side applications. You will work in a collaborative environment, utilizing cutting-edge technologies to enhance our existing infrastructure and develop new features.

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 NordProtect as a Backend Engineer and be part of a dynamic team dedicated to building robust, scalable backend systems using Go programming. As a key player in our development team, you will contribute to enhancing our security solutions and optimizing performance. Collaborate with cross-functional teams to deliver high-quality features that meet our customers' needs.

Join our dynamic R&D team at devexperts as a Backend Engineer. We are seeking a skilled professional who is passionate about building scalable and efficient backend applications. You will collaborate with cross-functional teams to design and implement innovative solutions that drive our products forward.

Flo Health develops a top-ranked health and fitness app focused on female health, with over 500 million downloads and 80 million monthly users worldwide. Backed by $200M in investment from General Atlantic and valued at $1B as of 2024, Flo has built a reputation for privacy-focused, clinically validated digital health solutions. The company supports 7 million paid subscribers and has spent a decade building user trust. Role overview The Senior QA Engineer will join Flo's Engineering team in Vilnius. This cross-functional role is central to delivering reliable, high-quality products using both manual and automated testing. The focus is on maintaining system stability, improving performance, and supporting seamless user experiences for Flo's global audience. What you will do Collaborate with Product Managers and engineers early in the development cycle to identify risks, edge cases, and potential gaps before implementation. Define and lead test strategies, including methodologies, quality criteria, and risk-based coverage aligned with User Stories and business objectives. Manage end-to-end test planning: determine scope, execute tests, and validate new features for consistency and reliability. Lead automation initiatives, balancing business impact and cost-efficiency, and focus on repeatable patterns and appropriate coverage across the test pyramid. Identify, prioritize, and report defects with clear, reproducible documentation that meets team standards. Apply data analysis tools such as SQL to investigate issues, validate assumptions, and support quality decisions. Integrate production signals (including crash analytics, non-fatal errors, and user-impact metrics) into pre-release test design and contribute to post-incident reviews. Promote quality within Agile teams, encourage best practices, and support ongoing process improvements.

At Surfshark, we strive to provide our users with an unparalleled experience through our product. This commitment requires vigilance in identifying and resolving any bugs that may disrupt user satisfaction. We believe that collaborative efforts from analytical and creative thinkers lead to fewer bugs and a smoother experience for everyone. Our dedicated QA team employs a diverse range of tools and technologies to combat these issues. We utilize various devices and virtual environments for comprehensive app testing, alongside an array of browsers and extensions for front-end evaluations. For functional test automation, we leverage TypeScript, and tools like Postman and Charles Proxy enable us to dive deeper into our applications. Are you ready to join us in this ongoing battle against bugs?

Join Saily, where we simplify staying connected while traveling. With no roaming fees or plastic SIM cards, we provide fast and secure mobile data in over 200 destinations. Saily boasts millions of paying customers and hundreds of thousands of travelers exploring our services at any time.To create the best possible product for our users, we cultivate an AI-native Product Engineering culture where:The Engineer acts as the builder, responsible for solving customer problems from conception to production.AI Agents assist by automating repetitive tasks, enabling Engineers to focus on impactful work.Team members are encouraged to propose improvements and implement changes to enhance Saily's effectiveness.A culture of curiosity, learning, and knowledge sharing is embraced by all.We remain focused on ensuring a comfortable and hassle-free journey for our customers.We prioritize growth over comfort, contribution over hierarchy, and impact over process. At Saily, we empower talented individuals with context, autonomy, and AI as their multiplier, allowing them to produce their best work.

Join the forefront of digital privacy with us!As part of the innovative team behind Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN, you will empower millions of users to reclaim their online security, privacy, and control.Your role: You will be integral in developing robust components across multiple platforms, such as Windows, Linux, Android, and Apple.Main Responsibilities:Craft clean, maintainable, and efficient code using Rust.Tackle complex challenges in security, performance, privacy, and networking at scale.Adhere to clean code principles and the highest industry standards.Collaborate with Low-Level Team members to produce secure, high-performance software solutions.Engage and contribute to the open source community surrounding the libtelio library.Ensure code quality by leaving it in a better state than you found it.

Join the NordLayer team as we revolutionize cybersecurity for businesses worldwide.NordLayer offers a flexible, toggle-ready platform that empowers modern teams to work seamlessly, free from security concerns. Trusted by over 11,000 companies globally, our solution integrates effortlessly into any tech stack, safeguarding users wherever they are.Your Role: Play a crucial part in helping businesses maintain robust, forward-looking network security.As part of our Desktop Applications department, you'll collaborate with a dynamic team of skilled engineers to develop innovative cybersecurity networking solutions tailored for businesses. We foster a collaborative environment to tackle complex challenges with a strong focus on security.

Are you ready to take your embedded Linux development skills to the next level? Join our dynamic team at Teltonika in Vilnius or Kaunas, Lithuania, where you'll have the opportunity to work with cutting-edge networking solutions that are transforming industries worldwide. This is your chance to enhance your expertise while contributing to impactful projects.At Teltonika, our Networking Solutions Business Unit is dedicated to creating and manufacturing high-quality industrial and enterprise connectivity equipment, including routers, switches, gateways, and modems. Our devices are utilized in the most challenging sectors such as Industry 4.0, Smart City initiatives, and Green Energy solutions.As a Mid/Senior Embedded Linux Software Engineer, your responsibilities will include:Developing innovative software for IoT devices.Tackling complex technical challenges.Analyzing and implementing new technologies.Collaborating with hardware components.Contributing as a key player in a collaborative team environment.Providing essential technical support to colleagues.To succeed in this role, we expect you to have:At least 2 years of experience in software development for embedded devices, preferably Linux-based.2+ years of proficiency in C programming.2+ years of experience with Linux OS (Buildroot/Yocto).A strong track record of solving complex software and hardware issues.A solid understanding of operating system principles.Knowledge of computer networking fundamentals.Ideally, you will also possess:Experience with various embedded processors (SoCs/microcontrollers).Familiarity with electronics and lab equipment (oscilloscope, logic analyzer, etc.).Experience in shell programming.Knowledge of communication protocols such as UART, SPI, I2C, USB.Experience with wireless technologies like WiFi and Bluetooth.Experience developing Linux drivers and bootloaders.Experience with the OpenWRT operating system.Awareness of cybersecurity principles.Good command of the English language.We offer you:A vibrant work environment with opportunities for professional growth in a rapidly expanding company.Engaging and challenging projects focused on industrial networking devices.A culture that promotes collaboration and a dynamic work atmosphere.Flexible work schedules and comprehensive health insurance to support your well-being.Company-sponsored sports activities (basketball, football, volleyball, yoga) and other events.Celebrations for achievements, team-building activities, summer festivals, and special occasions.An attractive bonus structure for participation in our employee recommendation program.Birthday and Christmas gifts, along with rewards for work anniversaries.Office snacks to keep you energized!

Join the forefront of cybersecurity innovation!Are you a proactive problem-solver ready to explore new horizons? Become a vital member of the team powering Threat Protection Pro, the groundbreaking NordLynx protocol, and the fastest VPN in the world—tools that empower individuals to reclaim their privacy, security, and control online.Your contribution? Enabling millions to restore their online security, privacy, and data ownership.Key ResponsibilitiesEnhance the NordVPN Windows desktop application, ensuring all features function seamlessly;Collaborate with a multidisciplinary team of developers, designers, QA specialists, and a Product Owner to innovate and maintain software for our globally recognized product;Utilize Microsoft’s tools and technologies to expand and refine our product’s capabilities—it's all about the code!Engage in a team-oriented approach to software development and problem resolution;Employ technologies and programming languages beyond .NET when necessary.Essential Qualifications4+ years of professional experience in software development as a .NET (C#) developer.Strong grasp of object-oriented programming principles.Familiarity with WPF, UWP, or similar XAML-based frameworks.Solid understanding of native Windows programming principles and APIs.Proficient in source code analysis and optimization techniques.Experience with unit testing and general software testing practices.Ability to swiftly adapt to changes and effectively tackle edge cases.Technologies You Will Utilize.NET/C#;XAML (WPF);MVVM;IPC;OpenSearch.

Join the forefront of privacy and security technology.Are you a passionate problem-solver looking to make an impact? Become a vital part of our team at Nord Security, where we develop cutting-edge tools such as Threat Protection Pro and the NordLynx protocol, leading the way in VPN technology.Your role? Empower millions around the globe to reclaim their online security, privacy, and data integrity.Key ResponsibilitiesCrafting well-structured test cases and automating tests to uncover product issues related to feature implementation, behavior, and performance;Taking charge of the test automation process throughout release cycles;Conducting smoke and regression testing;Enhancing testing strategies for better outcomes;Collaborating with the development team during feature planning and estimation;Ensuring the product maintains high quality and is ready for deployment.Essential QualificationsA minimum of 3 years’ experience in software testing automation, with a solid understanding of OOP principles (C# is a plus);Proficiency in designing and automating test cases, along with familiarity with various testing techniques;Experience in smoke and regression testing, taking responsibility for automation during releases, including test maintenance;Ability to foresee potential bugs during feature planning;Detail-oriented, effective communicator who collaborates well within a team;Experience in automated testing of desktop applications would be a significant advantage.Tools You'll UtilizeFamiliarity with source control systems like Git;Experience with testing frameworks (Bonus: WinAppDriver, FlaUI, NUnit);CI/CD integration with GitLab, GitHub, or Jenkins;Proficiency in Visual Studio and related tools.

Join Saily as a Senior Automation QA Engineer and take your career to the next level! We are looking for a passionate and skilled individual to enhance our quality assurance processes through automation. You will play a crucial role in ensuring the reliability and performance of our applications, collaborating with cross-functional teams to deliver high-quality software.

Join NordLayer and be part of our mission to revolutionize cybersecurity.Our innovative platform is designed to empower modern teams by providing seamless security solutions that eliminate the usual headaches associated with network protection.With over 11,000 businesses relying on us globally, NordLayer seamlessly integrates into any technology stack, ensuring users are safeguarded across different jurisdictions.Your Contribution: Play a crucial role in helping organizations maintain their security posture and adapt to evolving network challenges.Key Responsibilities:Craft, implement, and sustain automated end-to-end testing suites for both API and UI components.Collaborate with the Test Automation team to enhance a shared test library.Detect, document, and partner with the engineering team to address software issues.Engage closely with product, engineering, and QA teams to guarantee the delivery of high-quality products.

Join the forefront of online privacy and security.Are you an inquisitive problem-solver who enjoys charting their own course? Become a vital member of the team responsible for Threat Protection Pro, the NordLynx protocol, and the fastest VPN globally. These innovative tools empower individuals with enhanced privacy, security, and control over their online experience.Your Contribution: Play a crucial role in enabling millions to regain control over their online safety, privacy, and personal data.Key ResponsibilitiesConduct thorough manual testing and assist in the development of test plans and cases within the Apple ecosystem.Identify and report software defects while collaborating with development teams for swift issue resolution.Work closely with the Product & Engineering Manager, developers, and fellow QA team members to ensure the delivery of high-quality products.Assist in defining testing strategies and lead their implementation.Essential QualificationsMinimum of 3 years of experience in manual testing (experience with applications is preferred but not mandatory).A genuine interest in both manual and automation testing methodologies.Proficient in collaboration tools such as Jira and Confluence.Experience working in cross-functional teams.Familiarity with software QA methodologies, tools, and best practices.Knowledge of Agile practices.Meticulous attention to detail.Strong verbal and written English communication skills.Preferred QualificationsISTQB foundation certification is a significant plus but not a requirement.Tools You Will UtilizeJira X-rayConfluenceApple XCTestCharlesWireshark