Senior Backend Developer - Framework

About the Role Wix2 is looking for a Senior Backend Developer focused on frameworks to join the team in Vilnius. This position centers on designing and building backend solutions that support a range of applications. What You Will Do Design and implement backend frameworks for new and existing products Work with other engineers to solve complex technical cha…

The R&D team at Companial is seeking a talented Senior .NET Backend Developer to enhance our skilled team. We are committed to delivering top-notch quality by employing best practices and advanced tools. If you are passionate about personal growth, eager to innovate, and willing to help improve our existing systems for our clients, you are exactly who we want to add to our dynamic environment. This position is flexible, allowing you to work from our offices in Vilnius, Kaunas, or remotely.Join us if you thrive in a multicultural setting, enjoy tackling new challenges, and aspire to contribute to making IT a better industry!

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 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 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)

Become a vital part of the Incogni engineering team as we embark on a mission to develop a cutting-edge backend system that efficiently powers our innovative products, Incogni and Ironwall, at scale. We are in search of a seasoned backend engineer who excels in systems thinking, designs with scalability in mind, and thrives in a multi-technology environment.Our goal is to create a robust, secure, and dependable service platform that not only accommodates rapid business growth but also adapts to the evolving needs of our products. You will be engaged in designing and developing core application systems and service architectures that form the backbone of our platform.

Join our innovative team as a Backend Software Engineer at Wix.com, where you will play a crucial role in developing scalable and efficient backend systems. You will work collaboratively with cross-functional teams to design, implement, and maintain server-side applications that power our platform.Your expertise in backend development will help us enhance user experiences and drive our mission forward. If you are passionate about technology and keen to tackle exciting challenges, we want to hear from you!

ABOUT TIDEAt Tide, we empower small and medium-sized enterprises (SMEs) to optimize their operations, saving valuable time and resources. We not only provide business accounts and essential banking services but also a comprehensive suite of user-friendly administrative tools ranging from invoicing to accounting.Tide is revolutionizing the small business banking landscape with over 1.8 million members across the UK, India, Germany, and France.Leveraging cutting-edge technology, our solutions are meticulously crafted with SMEs in mind. With swift onboarding, competitive fees, and innovative features, we are committed to making data-driven decisions to fulfill our mission: to help SMEs reclaim their time and finances, allowing them to focus on what they do best.Tide facts:Tide serves SMEs in the UK, India, Germany, and France.We have over 1.8 million members: 800,000 in the UK and 1,000,000 in India, and our growth trajectory is steep.We have secured over $300 million in funding.Our team comprises over 2,500 diverse Tideans globally.We have offices in Central London, a member support and technology center in Sofia, Bulgaria, and additional technology hubs in Serbia, Romania, Lithuania, and Hyderabad, alongside offices in Gurugram, New Delhi, Berlin, Paris, and Luxembourg.ABOUT THE TEAM:Our engineering teams, comprising over 40 individuals, are dedicated to designing, developing, and managing a rich product portfolio across various business domains, including Payment Services and Business Solutions. With an ambitious roadmap ahead, our engineers are empowered to make impactful technical decisions that influence multiple teams and shape the future of Tide’s Global One Platform. This is a unique opportunity to make a significant impact by taking ownership of engineering practices within a rapidly growing organization! We operate in small, autonomous teams that are grouped by common domains and are responsible for the complete lifecycle of several microservices in Tide’s service catalog. Our engineers self-organize, collaborate on technical challenges, and establish their own standards within our various Communities of Practice, regardless of their current position within our Growth Framework.

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.

At Guru Pay, we pride ourselves on being a premier Electronic Money Institution (EMI) located in Lithuania, dedicated to providing tailored and high-quality financial services to B2B, B2C, and C2B customers. Our goal is to achieve exceptional speed, security, and excellence in all our operations.We are currently seeking a Mid-Senior Backend Engineer to become a vital part of our expanding engineering team. In this position, you will play a key role in establishing the backend architecture of our API-first payments platform, creating scalable and dependable systems that serve both our customers and internal teams. You will collaborate closely with engineers from various disciplines to design and implement robust, high-performance services that are fundamental to Guru Pay’s objectives.If you have a passion for solving intricate technical problems, value clean architecture and resilient systems, and excel in team-oriented environments, we would be delighted to meet you.

About Point Wild Point Wild helps people protect their identities and personal data as digital risks grow. Backed by WndrCo, Warburg Pincus, and General Catalyst, the team builds cybersecurity tools aimed at becoming a trusted source for cyber protection now and in the future. Role Overview Point Wild is hiring a Senior Backend Engineer to join a remote team based in Lithuania. This role focuses on building security solutions with a strong emphasis on cryptography, automation, and AI-powered analysis. The work is hands-on, and engineers contribute directly to the codebase across the stack. The team values close collaboration across engineering, product, and design. What You Will Do Design, build, and release features for the cybersecurity product suite. Write clean, maintainable backend code for systems running on AWS or GCP. Work alongside AI and cryptography specialists. Partner with the product manager to clarify requirements and help plan architecture, data flows, API specs, and testing approaches. Follow established engineering practices and join discussions about improving processes and code quality. Participate in customer-driven development and iterate based on user feedback. Create automated tests covering load, performance, and error handling. Location Remote within Lithuania.

Become an integral part of the Incogni engineering team and collaborate in crafting a cutting-edge backend platform that powers both Incogni and Ironwall at scale.We are seeking a seasoned backend engineer who excels in system thinking, is adept at designing for scalability, and takes pleasure in developing robust, reliable services.Our vision is to establish a secure, scalable, and high-performance service platform that accelerates business growth and adapts to changing product demands. You will engage with core systems and service architectures that are central to our platform, utilizing Go as a primary technology.

Join the forefront of online privacy and security!If you're an innovative problem-solver who thrives on challenges, become a part of the dynamic Nord Account Team. Contribute to the development of Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN—empowering users with enhanced privacy, security, and control over their online presence.Your contribution: Play a crucial role in helping millions regain control of their online security, privacy, and data.

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.

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 culture, where:The Engineer is a builder who takes ownership of customer problems from inception to production.AI Agents assist by automating repetitive tasks, allowing Engineers to focus on impactful work.All team members are encouraged to propose improvements that can be delegated to AI Agents and implemented effectively.Curiosity and knowledge sharing are paramount responsibilities for everyone.The customer’s journey of comfort and connectivity remains our top priority.We prioritize growth over comfort, contribution over hierarchy, and impact over process. At Saily, we empower talented individuals with context, autonomy, and AI tools to excel in their work.Main Responsibilities:Enhance the Saily product by developing and maintaining new features.Create features that support multi-dimensional personalization, A/B testing, and analytics.Develop and sustain a high-quality codebase.Continuously seek to improve code quality and performance.Mentor colleagues in development best practices and provide technical leadership.Influence the overall vision and long-term objectives of your team.Engage in R&D activities as needed.Collaborate in a cross-functional team environment to ensure seamless communication.Work closely with engineering, product, and design professionals from other teams.Please note: This position requires office attendance 3 times a week.

Join Architus as we partner with Tide, a pioneering name in banking technology, to enhance innovative projects. We are searching for a seasoned Senior Java Engineer to become a vital part of Tide’s dynamic team.About TideTide has recently launched its operations in Lithuania, expanding its workforce to over 34 skilled engineers through a successful collaboration with Architus. The company is dedicated to developing a cutting-edge financial platform aimed at empowering small businesses to optimize their time and expenses. Tide not only offers business accounts and banking services but also a wide array of integrated administrative tools, including invoicing and accounting solutions.Since its inception in 2017, Tide has gained the trust of over 1 million small businesses globally, serving SMEs in the UK, India, Germany, and France. With its headquarters in central London and additional offices in Sofia, Hyderabad, Delhi, Berlin, and Belgrade, Tide employs more than 2000 professionals.As Tide expands rapidly and ventures into new markets, it continuously seeks enthusiastic and motivated individuals to join its mission of empowering small businesses.The OpportunityAt Tide, engineering teams are engaged in designing and managing a diverse product catalog across multiple domains. With an exciting roadmap ahead, engineers are empowered to make significant technical decisions that influence the Global One Platform. Working in small, autonomous teams, engineers take charge of microservices, self-organizing to tackle technical challenges and establish guidelines within Communities of Practice.As a pivotal member of an agile engineering team, you will work closely with Backend, iOS, Android, Web, QA, DevOps, Data, and Product teams to deliver meticulously engineered solutions. This represents a unique opportunity to influence engineering practices and make a tangible impact within a rapidly growing international organization.Technical StackProgramming Languages: Java 17Frameworks: Spring Boot, JOOQAPI: RESTful APIs, API design (treated as products, often public in Open Banking)Event-Driven Architecture: SNS+SQS, KafkaDatabases: PostgreSQL (via Aurora)Cloud Infrastructure: AWS (heavy AWS usage)CI/CD: GitHub, GitHub Actions, JUnit, Pact testingDeployment: ArgoCD, Docker, Terraform, EKS/KubernetesMonitoring & Debugging: DataDogCollaboration Tools: Close collaboration with Product Owners on user needs, business opportunities, and regulatory requirements.

Join the forefront of online security technology! Are you a passionate and innovative problem-solver? Become a pivotal member of the team behind Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN. Our mission is to empower users by enhancing their privacy, security, and control online.Your impact? You will be instrumental in helping millions regain control over their online security, privacy, and data.Threat Protection In an era where viruses, Trojans, worms, spyware, and other malware pose significant threats, our Threat Protection team is committed to creating a safer online experience. We are developing robust software solutions that protect our customers from these threats. You will work on scalable code designed for high-volume, secure, distributed systems, crafted from the ground up. If this sounds like the challenge you've been searching for, we invite you to read on!

Join the forefront of online security with the world's leading VPN and more. Are you a passionate problem-solver eager to make a difference? Become part of the innovative team behind Threat Protection Pro, the cutting-edge NordLynx protocol, and the fastest VPN available—solutions that empower users with privacy, security, and control over their digital lives.Your contribution? Support millions in reclaiming their online security, privacy, and data.Join the Notification Center Team - Shape the Future of In-App Notifications!As a Senior Backend Engineer on our Notification Center Team, you will be integral in designing and maintaining crucial microservices that facilitate in-app notification delivery. Our team is essential in providing a backbone for a multitude of features across various teams that depend on seamless notification delivery. Our mission is to closely collaborate with other Nord teams to pave the way toward a scalable future.Are you prepared to tackle the challenges of scalability, cost-efficiency, clean code, maintenance, and ensuring a stable, functional service that serves as a key component behind many features of NordVPN, NordPass, and NordLayer? Make an impact and help shape the future of NordVPN and its sister products. Join our team of skilled engineers committed to technical excellence today!

Join the forefront of online security innovation.Are you a passionate problem-solver looking to contribute to cutting-edge technology? Join our team at Nord Security, where we develop advanced tools like Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN. Our mission is to empower individuals by enhancing their privacy, security, and control over their online presence.Your contributions will directly impact: enabling millions to reclaim their online security, privacy, and data integrity.As a vital member of the Nord Checkout team, you will help develop and maintain critical services that streamline the final stages of the user purchase journey. Our daily tasks involve scaling our services and rolling out new features to ensure a secure, fast, and user-friendly experience. Additionally, we support other teams by providing access to user purchase data.Key Responsibilities:Design and develop robust, scalable, and secure microservicesWrite high-quality, maintainable code that performs well under loadCollaborate with team members, QA, DevOps, and security teams on daily tasksSuccessfully deliver new features and fixes on scheduleCreate technical designs and maintain thorough documentationEngage in R&D activities to tackle new and complex challengesExhibit ownership of tasks from inception to completionContinuously pursue professional development and learning.

Join our innovative team at Nordsec as a Mid-Level Backend Engineer! In this role, you will contribute to developing and enhancing security tools that safeguard our users' data. We are looking for a passionate individual with a strong background in PHP who is eager to tackle challenging problems and collaborate within a dynamic team.