Senior Platform Engineer at Surfshark | Vilnius

Join Surfshark as a Senior Platform Engineer, where your expertise will play a crucial role in enhancing our technical infrastructure. In this position, you will design, implement, and maintain the robust systems that support our services. If you have a passion for building dependable systems, automating processes, and driving continuous improvements in infr…

Role overview As a Senior Engineer focused on Transmission System Development at epsog, this position involves designing and enhancing transmission systems to maintain steady performance and reliability. The role is based in Vilnius and plays a key part in shaping the effectiveness of transmission operations. What you will do Collaborate with colleagues across different disciplines to move transmission system projects forward Study system operations and pinpoint areas that could work better Apply new solutions aimed at improving efficiency and reliability Requirements Background in transmission system design or development Ease working within cross-functional teams Strong analytical thinking and a proactive attitude toward solving problems Drive for engineering quality and ongoing improvement Location This position is located in Vilnius.

Join a thriving movement with over 500 million downloads and 80 million monthly users!Flo is the leading health and fitness app globally, dedicated to revolutionizing female health. With our recent $200 million investment led by General Atlantic, we proudly became the first app of our kind to achieve a $1 billion valuation in 2024, and our momentum continues to build.With 7 million paid subscribers and the highest-rated app in the health category on the App Store, we have spent a decade cultivating trust. As we embark on the next phase of digital health—powered by AI, prioritizing privacy, and clinically validated—we aim to empower our users to better understand their bodies.As a Senior / Lead iOS Engineer at Flo, you will play a pivotal role in shaping the future of our app and enhancing user experience through innovative technology.

Role Overview Wix is looking for a Senior Backend Engineer focused on Functions to help build and support scalable backend systems. This position is based in Vilnius. What You Will Do Design, develop, and maintain backend solutions that expand the platform’s capabilities Collaborate with cross-functional teams to deliver reliable software Contribute to high-quality code that meets user needs

Join the forefront of online security with NordVPN.Are you a proactive problem-solver eager to shape your own career path? Become part of the innovative team behind Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN—solutions designed to empower users with enhanced privacy, security, and control over their online presence.Your contribution: Enable millions to regain control over their online security, privacy, and data.At NordVPN, you will support millions of users globally through our extensive edge network. Your primary focus will be on ensuring content accessibility—making certain that traffic is delivered to users quickly, reliably, and securely, no matter where they are.You will work at the convergence of networking, load balancing, and traffic shaping. When there are issues with speed, accessibility, or protocol-level behavior, you will investigate and resolve these challenges.Your key responsibilities:Guarantee content accessibility across a globally distributed edge infrastructureDesign, manage, and enhance load balancing and traffic shaping systems at scaleDiagnose and resolve connection, latency, and accessibility issues comprehensivelyOversee HTTP traffic flow from the client to the edge and back to the originInvestigate and solve website and service accessibility challengesCollaborate across protocol layers to identify and resolve issuesEssential qualifications:Expertise in load balancing and traffic shaping, including architecture, algorithms, health checks, and failover strategiesProficiency with NGINX and/or HAProxy, including configuration, tuning, and debugging in high-traffic environmentsStrong understanding of networking fundamentals, including DNS, routing, firewalls, and packet analysisFluency in the OSI model, comfortable working across L3–L7, including TCP internals and SSL/TLS handshakeExperience with SaltStackLinux administration skillsProficient in Python for automation, tooling, and scriptingAdept at troubleshooting network and application-layer issues in production at scale

Join Saily, an innovative leader in mobile connectivity, dedicated to eliminating the hassle of staying connected while traveling. We offer lightning-fast, secure mobile data across 200+ destinations without any roaming fees or plastic SIM cards. With millions of paying customers and countless travelers exploring Saily at any given moment, we are on a mission to enhance user experiences.At Saily, we cultivate an AI-native Product Engineering culture that empowers our engineers to take ownership of the entire product lifecycle, from ideation to production. Our AI agents streamline coding processes and tackle repetitive tasks, allowing engineers to focus on impactful solutions. Collaboration, curiosity, and continuous improvement are at the heart of our operations, with a customer-centric approach guiding our decisions.We prioritize personal and professional growth, valuing contributions over rigid hierarchies, and ensuring that our team members have the autonomy to excel in their roles. Join us in creating seamless, connected journeys for our customers.

Join our dynamic team at nordsec as a Senior Backend Engineer specializing in Golang. In this role, you will be pivotal in designing and implementing robust backend systems that power our innovative security solutions. You will collaborate with cross-functional teams to create scalable architectures and optimize performance.

Join Flo Health as a Senior Developer Experience Engineer, where you will play a crucial role in enhancing our developers' productivity and satisfaction. In this position, you will collaborate closely with our engineering teams to identify pain points in the development process and implement innovative solutions. Your expertise will help create a seamless and efficient environment that empowers developers to deliver exceptional products.

Join our dynamic team at nordsec as a Senior Frontend Engineer! We are looking for a talented individual with a passion for building exceptional user interfaces using React. In this role, you will collaborate with cross-functional teams to deliver innovative solutions, enhance user experiences, and contribute to the overall success of our projects.

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 NordLayer, where we are revolutionizing cybersecurity solutions that grow with your business.Our adaptable platform empowers modern teams to excel without the burden of security concerns. Trusted by over 11,000 companies worldwide, NordLayer seamlessly integrates into any technology stack, ensuring user protection across borders.Your Role: Play a pivotal part in helping businesses maintain robust security while advancing with innovative network protection.At NordVPN, we manage a global edge infrastructure that serves millions of users. This position is designed to address the challenge of gaining real-time insights into our infrastructure's performance at scale, while minimizing operational noise.We are seeking a Senior Site Reliability Engineer (SRE) with a focus on observability: your responsibilities will include designing monitoring systems, enhancing signal quality, alleviating alert fatigue, and collaborating with data teams for anomaly detection. You will take ownership of our understanding of the health and performance of our distributed systems.Key ResponsibilitiesDevelop, construct, and refine monitoring pipelines and observability tools across a globally distributed infrastructure.Establish and execute service-level monitoring strategies based on key performance indicators (latency, traffic, errors, saturation).Mitigate alert fatigue by creating actionable alerts that engineers can rely on.Create and manage custom exporters, scripts, and integrations for metrics and log collection.Work alongside the data team on anomaly detection and data-driven operational insights.Comprehend service signals—understand what metrics to track, their significance, and their interpretations.Core RequirementsExperience in distributed systems observability, including monitoring architecture, signal design, and dashboarding.Proficiency in golden signal methodology—designing monitoring processes that focus on what truly matters rather than what is easy to measure.Expertise in alert design—reducing noise, creating actionable alerts, and managing on-call responsibilities.Strong Python skills for scripting, custom exporter development, automation, and data processing.Linux administration and troubleshooting capabilities.

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.

Join the forefront of internet privacy and security with NordVPN.Are you a proactive problem-solver looking to make a significant impact? Become a vital part of the team behind Threat Protection Pro, the NordLynx protocol, and the fastest VPN globally—innovative tools designed to restore privacy, security, and user control.Your contribution? Empowering millions to regain control over their online security, privacy, and personal data.At NordVPN, we operate a globally distributed VPN and DNS infrastructure that serves millions of users. Your role will encompass deploying, managing, and enhancing VPN nodes worldwide, ensuring every client connection is optimized for speed, stability, and security.You will collaborate closely with application teams to ensure seamless client connectivity from end to end. Quality and reliability are paramount in this role.Key ResponsibilitiesDeploy and manage a globally distributed VPN and DNS infrastructureEnsure optimal connection quality, stability, and performance across all nodesCollaborate with application teams to enhance client connectivity and protocol performanceOptimize VPN service performance through kernel tuning, flamechart analysis, and profilingManage security measures including firewalls, PKI, certificate lifecycle, and hardeningOversee authentication and authorization frameworksTake ownership of configuration management and automated infrastructure provisioningCommunicate incidents clearly and lead postmortem analysesCore QualificationsManage critical VPN services from architecture to monitoring, ensuring scalability and securityDeliver on OKRs and key commitments within set timelinesDraft RFCs/ADRs for new features and refactoring effortsEnhance engineering quality through design reviews, knowledge sharing, and mentorshipBalance reliability, security, and delivery speed with sound operational judgment

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 Saily, where we revolutionize mobile connectivity while traveling — no more roaming fees or plastic SIM cards. Experience lightning-fast, secure mobile data in over 200 destinations. With millions of paying customers and countless travelers engaging with Saily at any moment, we are dedicated to building the optimal product for our users.At Saily, we cultivate an AI-native Product Engineering culture, where:The Engineer is a builder, responsible for solving customer problems from ideation to production.AI Agents assist by automating repetitive tasks, empowering Engineers to maximize their impact.Every team member is encouraged to propose improvements and implement changes collaboratively.Curiosity, learning, and sharing knowledge are fundamental to our ethos.Customer satisfaction and a seamless travel experience are always our top priorities.We prioritize growth over comfort, contribution over hierarchy, and impact over processes. At Saily, we offer talented individuals the context, autonomy, and AI tools they need to excel in their work.

Join the dynamic team at SumUp, where the Global Bank tribe is dedicated to building robust infrastructure and essential services that empower merchants with digital business accounts, simplifying banking for millions of small enterprises. The Transfers Gateway squad plays a crucial role by connecting SumUp’s internal systems to external financial networks across the EU and the UK. We are responsible for the services that facilitate daily money movement through various payment schemes. Our team oversees the complete integration process and manages production services that handle real transactions at scale. You will be instrumental in modernizing legacy systems while ensuring reliability, accuracy, and adaptability, making architectural choices that directly impact uptime and enhance the merchant experience across diverse markets. Our tech stack comprises Go, AWS, Kafka, PostgreSQL, and Kubernetes, reinforced by a comprehensive observability toolchain including Prometheus, Grafana, and Honeycomb. We leverage AI-assisted development tools such as Cursor and GitHub Copilot to enhance our workflows. At SumUp, we foster an engineering culture rooted in ownership. We operate on a “build it, run it, improve it” philosophy, emphasizing strong observability and continuous learning. Engineers enjoy clear responsibilities and autonomy, with decisions documented and made collaboratively. The Vilnius team is integral to the Global Bank domain, managing production systems, influencing technical direction, and collaborating with colleagues across SumUp’s global offices to enhance critical merchant banking capabilities. Be a part of our Vilnius Team today! (Vilnius office)

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 our dynamic team at Nordsec as a Mid-Senior DevOps Engineer. In this role, you will play a pivotal part in enhancing our deployment processes, working collaboratively to optimize our infrastructure and automate workflows. You will have the opportunity to engage with cutting-edge technologies while driving efficiency and stability across our systems.

Join SumUp's Global Bank tribe, where we are dedicated to creating the essential infrastructure and core services that will empower our merchants with a digital banking experience tailored for their success. Our mission is to be the preferred banking partner for small merchants worldwide by delivering a banking experience that is effortless, straightforward, and cost-effective. As a member of the Global Bank tribe, you will play a significant role in developing SumUp's digital bank. Collaborate with a diverse, autonomous team from 32 different nationalities across cities like Cologne, Berlin, São Paulo, Sofia, London, and Vilnius, all committed to taking ownership, working with purpose, and supporting the growth of small businesses. In your capacity as a Senior Backend Engineer, you will be instrumental in transitioning from localized setups with regional banks to a unified Global Bank. This will involve tackling the challenges associated with migrating to a fully distributed, event-driven architecture. Our technology stack comprises Go, AWS, Kafka, PostgreSQL, and Kubernetes, complemented by a robust observability toolchain featuring Prometheus, Grafana, and Honeycomb. We also leverage AI-assisted development tools such as Cursor and GitHub Copilot. At SumUp, our engineering culture emphasizes ownership. We adhere to a “build it, run it, improve it” philosophy, ensuring strong observability and a commitment to continuous learning. Engineers enjoy a clear scope of work and autonomy, with decisions made collaboratively and documented thoroughly. The Vilnius team is integral to the Global Bank domain, overseeing production systems, shaping technical direction, and collaborating closely with colleagues across SumUp’s global offices on critical merchant banking capabilities. Join our Vilnius Team today! (Vilnius office)