Full-Stack Developer | Mid-Senior Level | AI Tools

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 the innovative team at nordsec as a Senior Full Stack Product Engineer. In this pivotal role, you will be at the forefront of developing cutting-edge solutions, leveraging your expertise in both front-end and back-end technologies to create seamless user experiences. You will collaborate with cross-functional teams to define, design, and ship new features while maintaining high standards for code quality and performance.

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.

Join Omnisend and experience a uniquely calm work environment.At Omnisend, we pride ourselves on having a culture that emphasizes productivity and collaboration without the distractions of office drama or unwarranted bureaucracy. Our team is composed of intelligent, driven individuals who focus on delivering impactful solutions for eCommerce brands. With a data-driven approach, we rely on insights rather than assumptions, fostering an atmosphere of trust and transparency among our team members. We prioritize real feedback and adapt swiftly to changes, ensuring we meet our clients' needs effectively. Omnisend is customer-funded and driven, dedicated to solving genuine challenges in the eCommerce space and delivering results that matter. We also believe in having fun—workations, team gatherings, and occasional celebrations are part of our culture, without any forced activities or awkward icebreakers.We are currently on the lookout for a Senior Full-Stack Engineer. This role is perfect for individuals who possess a proactive mindset and a passion for developing impactful software products. As a member of our App Platform team, you will collaborate with highly skilled professionals to oversee the development, maintenance, and enhancement of our AI platform, front-end platform, and other developer experience solutions. You will also support various experience teams by developing innovative solutions.

Join Saily as we revolutionize mobile connectivity for travelers! With Saily, you can enjoy seamless mobile data across 200+ destinations without the hassle of roaming fees or plastic SIM cards. Our customer base includes millions of satisfied users and countless travelers browsing our services every day.At Saily, we nurture an AI-driven Product Engineering culture where:The Engineer is empowered to take ownership of projects from ideation to production.AI Agents assist by handling routine tasks, allowing Engineers to focus on impactful work.Everyone is encouraged to proactively suggest improvements and implement them.Curiosity and knowledge sharing are integral to our team dynamics.Our primary goal is to ensure a comfortable and hassle-free journey for our customers.We prioritize growth, contribution, and impact in our workplace. At Saily, we provide our talented team members with the context, autonomy, and AI tools necessary to excel in their roles.If you’re ready to kickstart your engineering career with meaningful work—rather than just exercises—apply to join Saily.We seek Interns who are clear thinkers, quick learners, and take initiative. Curiosity and discipline are essential traits we value.From day one, you will collaborate with a skilled team on real-world challenges, receive support when needed, and gain ownership as you prove your capabilities.Our pace is fast, we leverage AI regularly, and we focus on helping you establish solid engineering practices early in your career.This is a 3-month full-time paid internship. Demonstrate your value, perform well, and you may be offered a full-time position.If this sounds like the right opportunity for you, apply now!Main ResponsibilitiesDevelop small tools/features with guidance from the team.Collaborate with product managers, designers, and fellow engineers.Work within small, highly autonomous teams.Learn to utilize AI agents for specifications, coding, testing, and iterative development.Contribute to enhancing our internal agent network and development workflows.

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!

At OBDeleven, we are dedicated to simplifying automotive technology for enthusiasts around the world. With over a decade of experience, we specialize in creating powerful yet user-friendly diagnostic and customization tools. Join us in our mission to innovate and enhance the driving experience.Your Role:Develop and enhance our website and e-commerce platform using the latest technologies such as Vue.js, React, Next.js, and Symfony/Sylius.Collaborate with marketing, design, and product teams to transform concepts and requirements into effective features.Take ownership of the development process from initial planning to deployment and subsequent improvements.Focus on optimizing the performance, reliability, and overall developer experience across our web stack.Write high-quality, maintainable, and well-tested code adhering to industry best practices.Utilize AI-driven tools to enhance productivity and maintain code quality.Contribute to setting and improving engineering standards while helping to elevate the technical capabilities of the team.What We Seek:Proven experience in PHP and JavaScript/TypeScript (Vue.js, React, Next.js).Proficient in working with production systems, including SQL, Redis, message queues, and caching.Familiarity with Azure or similar cloud platforms, along with knowledge of Docker and Kubernetes.Strong understanding of testing methodologies (unit, integration, and performance testing).Able to design straightforward, scalable solutions and enhance existing systems without unnecessary complexity.Possess a keen sense of business impact and ownership; proactive communication and teamwork are essential.Stay updated with modern tools and approaches, with a willingness to learn new technologies.Fluency in Lithuanian and professional proficiency in English.Preferred Qualifications:Experience with Sylius/Symfony or other e-commerce frameworks.Background in high-traffic web platforms or marketing-focused environments.Knowledge of observability tools (logs, metrics, tracing, alerting).Experience in cloud migrations, refactoring legacy systems, or enhancing CI/CD pipelines.What We Offer:Competitive Compensation: We provide a salary that reflects your expertise and growth, along with an annual performance-based bonus.Flexible Work Environment: Enjoy a hybrid work setup with three days in the office and two days remote.Health and Well-being: Select from comprehensive health plans, take paid leave for personal care, and enjoy flexible working hours, including a day off for your birthday.Additional Time Off: Benefit from a 4-day workweek for one month each year, depending on company performance.

Join Saily, where we are revolutionizing the way travelers stay connected around the globe! With no roaming fees and no plastic SIM cards, we provide seamless, high-speed, and secure mobile data in over 200 locations worldwide. Our platform caters to millions of paying customers, with countless travelers accessing Saily at any given moment.We embrace an AI-native Product Engineering culture committed to delivering unparalleled products for our users. Here, you will find:Engineers act as builders, tackling customer challenges from inception to production.AI Agents that automate routine tasks, enabling engineers to focus on impactful solutions.A collaborative environment where everyone suggests improvements and implements effective changes.A culture of curiosity, continuous learning, and knowledge sharing.An unwavering commitment to ensuring a seamless and enjoyable experience for our customers.At Saily, we prioritize growth over comfort, contribution over hierarchy, and impact over process. We empower talented individuals with context, autonomy, and AI tools to help them excel in their work.If you’re eager to kickstart your engineering career with hands-on experience rather than theoretical exercises, we invite you to apply.We are seeking Trainee Engineers who possess clear thinking, rapid learning abilities, and a sense of ownership. Curiosity and discipline are key traits we value.From day one, you'll collaborate with a dynamic team on real-world challenges. While support is available when needed, you'll also be granted ownership as you prove your readiness.Our pace is swift, AI is our standard tool, and we emphasize cultivating strong engineering habits right from the start.This role is a 3-month full-time paid internship. Demonstrate your capabilities and performance, and you may have the opportunity to transition into a full-time position.If this exciting opportunity resonates with you, apply now!

Join Saily, where we simplify connectivity while traveling with no roaming fees and no plastic SIM cards. Experience secure, high-speed mobile data in over 200 global destinations, enjoyed by millions of paying customers and countless travelers daily.At Saily, we cultivate a unique AI-native Product Engineering culture that empowers our Engineers to:- Take ownership of customer challenges from concept to production- Leverage AI Agents to automate repetitive tasks, allowing Engineers to focus on impactful solutions- Actively contribute ideas for enhancing our processes and agent capabilities- Foster a culture of curiosity, learning, and sharing knowledge- Prioritize delivering a seamless, hassle-free experience for our customersWe prioritize growth, collaborative contributions, and impactful results over rigid hierarchies. At Saily, you’ll find an environment that offers autonomy, context, and cutting-edge AI tools to maximize your potential.We are excited to welcome passionate junior engineers to our team, as we believe that true impact comes from your eagerness to learn and innovate, rather than years of experience. Saily provides the space to build and shape the future of connectivity.What can you look forward to? Hands-on experience in AI-assisted software development, access to a wealth of learning resources, and the chance to work on a product that is not just technically challenging but also meaningful.Bring your skills and vision to Saily and embark on this exciting journey!Key ResponsibilitiesDevelop small tools/features with team support.Collaborate closely with product managers, designers, and fellow engineers.Engage in highly autonomous, small team dynamics.Gain proficiency in utilizing AI agents for specifications, coding, testing, and iterative development.Contribute to enhancing our internal agent network and development processes.Focus on achieving user and business outcomes rather than merely output.

Join our dynamic team of over 500 professionals at Oxylabs, where we specialize in creating innovative proxy and web data scraping solutions for some of the most recognized brands globally, including Fortune 500 companies.What Awaits You:As a Senior Full Stack Developer, you'll tackle intricate challenges while managing our robust infrastructure, which handles over 60PB of monthly data traffic. Our scale and maturity are reflected in the following metrics:- Over 6PB of Ceph storage- More than 60PB of data traffic processed monthly- 300k+ service requests per second- 500k+ Kafka messages streamed per second

Join Nord Security in Shaping a Safer Cyber Future!At Nord Security, we empower individuals and organizations to reclaim their online security, privacy, and data integrity. Our innovative solutions, ranging from VPN services to password management, threat intelligence, and eSIM solutions for travelers, are trusted by millions across the globe.In this pivotal role, you will contribute to helping people take ownership of their online experiences.You will be responsible for designing, building, and maintaining internal AI-driven tools that enhance our teams' productivity. Your work will encompass the entire development lifecycle—from conceptualization to deployment of applications that facilitate our transition toward an AI-first organization.Key ResponsibilitiesDevelop and deploy AI applications: Create comprehensive internal applications (both front-end and back-end) utilizing AI technology, transforming concepts into production-ready solutions.Integrate with Existing Systems: Seamlessly connect AI tools with internal platforms and data sources (e.g., Jira, Confluence, Slack, BigQuery) using well structured APIs.Infrastructure Ownership: Deploy and manage applications utilizing Docker, Kubernetes, and various cloud services (AWS/Azure/GCP) to ensure reliability and scalability.Collaborative Engagement: Partner with stakeholders across multiple departments to grasp their requirements and translate them into practical, user-friendly tools.Quality and Security Maintenance: Uphold high standards of application security, especially when dealing with sensitive data and AI workflows.Core QualificationsComprehensive Full-Stack Development: Proven experience in building end-to-end web applications (e.g., Python/Node.js coupled with React/Vue).Cloud & DevOps Proficiency: Familiarity with Docker, Kubernetes, and managing cloud resources (AWS, Azure, or GCP).API Development Expertise: Background in designing and integrating RESTful APIs to connect various systems and services.Security Awareness: Knowledge of secure coding practices, especially concerning data management.Proactive Mindset: High degree of independence, ownership, and a positive, solution-oriented approach.

Join the forefront of payment processing innovation with Nuvei, a dynamic Canadian fintech company dedicated to empowering businesses globally.At Nuvei, we provide cutting-edge, modular, and scalable technology that allows our clients to seamlessly accept next-generation payments, access a variety of payout options, and utilize comprehensive banking services including card issuing and risk management. With a presence in over 200 markets, local acquiring in 50 markets, and support for 150 currencies and 700 alternative payment methods, we equip businesses with the tools and insights they need to thrive locally and internationally.Your Mission:As a Full Stack Developer in our R&D department, you will play a key role in developing high-quality user interfaces and enhancing client-side experiences, while also maintaining a deep understanding of our back-end systems.The Product:Nuvei Digital Accounts serves as a high-performance platform for global enterprise banking, functioning as an Electronic Money Institution (EMI) and Crypto-Asset Service Provider (CASP). This centralized hub facilitates multi-currency treasury management, real-time foreign exchange, and crypto transfers, bridging traditional financial systems with blockchain-based solutions to manage over 20 currencies and digital assets within a regulated framework.Key Responsibilities:Design and implement application features with a focus of 80% on front-end and 20% on back-end, ensuring seamless integration between both.Develop secure, AI-driven features utilizing both external services and internal microservices.Stay abreast of emerging technologies and methodologies.Lead the creation of modern, responsive user interfaces using Vue.js, ensuring exceptional UI/UX standards.Engage in rapid development cycles using dynamic languages and agile methodologies.

Role overview Psicro is looking for a Full Stack Developer with a focus on AI Solutions to join the team in Vilnius. This position centers on building technology to support new artificial intelligence products. What you will do Design, develop, and implement software for projects driven by AI Work on both front-end and back-end systems Collaborate with team members to deliver solutions that fit client needs Why join Develop technical skills in a company that prioritizes AI innovation Take part in projects that make a difference for clients Join a supportive team based in Vilnius, a growing tech hub

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.

Are you prepared to spearhead the transformation of an ERP system from Classic to Cutting-Edge?Our client is committed to developing and scaling their proprietary ERP system, which assists businesses in streamlining complex operations. They are currently navigating a significant technological pivot: migrating their core from reliable legacy systems to the latest tech stack (.NET 9 and React 19). They are seeking a dedicated Mid-Level Developer to join their core team of innovative professionals!Tech Stack:Backend: Proficiency in .NET Framework 4.7 (maintenance) with skills to develop new features on .NET 9.Frontend: Strong expertise in React, particularly with the transition to React 19. Familiarity with Angular.js (1.7) is a considerable advantage as you will play a key role in migrating our legacy frontend to React.Database: Skilled in MsSQL.Integrations: Experience with RESTful APIs and connecting systems with major ERP/Accounting platforms such as Rivile, MsDynamics, SAP, BSS, etc.Cloud: All operations are hosted on Azure.Who We Are Looking For:A Mid-Level Developer or a highly capable Junior with substantial hands-on experience.Someone who is not just a coder but is passionate about understanding business logic and product development.A collaborative team player who thrives in a small, close-knit group (currently 3 full-time developers + 1 part-time).Location: Candidates must be able to work from our office in Pilaitė, Vilnius.What’s In It For You?Salary: €2,000 – €2,500 Net (after tax), based on experience. For a Senior profile with exceptional expertise, we are open to discussing up to €3,000 Net.Product-Focused: Move away from the agency grind and work on a single, long-term product where you can see the direct impact of your contributions.Hybrid Flexibility: We will begin with a period of close office-based collaboration to bring you up to speed, transitioning to a flexible model (e.g., once a week in the office) thereafter.Perks & Culture: * Annual team retreat/vacation abroad.Opportunities for business trips and international exhibitions.Convenient parking at our office on Pilaitės pr. (ample spots available!).Why This Role is Unique:Join a tech migration task force rather than simply maintaining a system. This is a rare opportunity to bridge the gap between enterprise-grade legacy stability and the latest .NET and React technologies.

Join NFQ, a key technology partner for HomeToGo, where a talented team of software engineers and data science experts is dedicated to innovating the world's largest vacation rental marketplace. As we expand our technology team in Lithuania, we are eager to find exceptional individuals to become part of our dynamic organization.HomeToGo is renowned for offering the largest selection of vacation rentals globally, featuring millions of listings from thousands of trusted partners, such as Booking.com, Vrbo, and TripAdvisor. Our platform showcases a diverse range of accommodations, from vacation homes and cabins to apartments and unique properties like castles and houseboats. We streamline the search process by combining price, destination, dates, and amenities to help travelers find their ideal lodging anywhere in the world.Since our establishment in 2014, HomeToGo has successfully operated localized apps and websites in 25 countries across Europe, North America, South America, Australia, and Asia-Pacific. We also manage various brands, including Agriturismo.it, AMIVAC, Casamundo, and more.As a Senior Software Engineer & Team Lead, you will play a crucial role in the success of HomeToGo, overseeing one of our Consumer Product teams. Our innovative tech stack includes Symfony, MariaDB, ElasticSearch, Snowflake, Redis, Aerospike, Apache Kafka, RabbitMQ, Docker, Kubernetes, and more. With millions of properties listed on our platform, this role presents an exciting opportunity to make a significant impact. Apply now and lead our team to new heights!

Join Nordsec as a Senior iOS Engineer where you will lead a dynamic team in crafting innovative mobile applications. Your expertise will guide the development process, ensuring high-quality deliverables while fostering collaboration and creativity within the team.

Join Nord Security in our mission to create a safer cyber future.We empower individuals and businesses to reclaim their online security, privacy, and data. Our innovative solutions, ranging from VPNs and password managers to threat intelligence and travel eSIMs, are trusted by millions around the globe.In this pivotal role, you will play a crucial part in helping users take control of their digital lives.Main Responsibilities:Design and enhance a robust User Control Panel that fosters user trust, engagement, and sustainable growth.Integrate new features and user flows within the account management portal (subscriptions, billing, security).Develop and uphold a high-quality, scalable front-end codebase.Continuously refine code quality, performance, and user experience.Create and manage unit and integration tests in tandem with feature development.Adhere to and contribute to component library and design system standards.Engage in code reviews to maintain high engineering standards.Collaborate with backend engineers on API contracts and error handling.Work alongside QA engineers to ensure consistent feature behavior, including edge cases.Debug issues across the frontend stack, from UI rendering to state management.Advocate for improvements in engineering standards, tooling, and development processes.Conduct research and development to support new initiatives or technical decisions.Provide technical mentorship to team members regarding best practices.Contribute to shaping the team's technical vision and long-term objectives.

Join the forefront of digital privacy and security.Become a part of the innovative team responsible for Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN—solutions that empower users to regain control over their privacy, security, and data.Your role? Assist millions of users in reclaiming their online security, privacy, and data management.Our Payments Team is the backbone of Nord Security's global operations. We design, build, and maintain systems that ensure secure and smooth payment experiences for users across the globe. Collaborating with a diverse array of international payment providers, we tackle challenges related to high-load environments, complex payment processes, and recurring subscription management.This is an environment for engineers who excel at solving intricate problems, creating robust systems, and continually enhancing their skills. You will develop essential components that directly influence how customers handle payments and manage subscriptions for our highly regarded products.If you seek a team that champions ownership, creativity, and technical excellence, you will thrive here.