Mid-Senior Backend Engineer (Go) at Nordsec | Krakow

Join our innovative team at Nordsec as a Mid-Senior Backend Engineer specializing in Go. In this role, you will be responsible for designing and implementing robust backend solutions that drive our platform's performance and scalability. Collaborate with cross-functional teams to enhance our technology stack and deliver high-quality software solutions. Your expertise will contribute to our mission of providing secure and efficient digital services.

Join nordsec as a Senior Full-Stack Software Engineer and play a pivotal role in developing innovative software solutions. In this position, you will collaborate closely with cross-functional teams to design, build, and maintain robust applications that meet our clients' needs. If you're passionate about technology and eager to contribute to exciting projects, we want to hear from you!

About Saily Saily helps travelers stay connected in over 200 destinations, offering mobile data without roaming fees or the hassle of physical SIM cards. Millions of people rely on our service to make travel smoother and more convenient. Our Engineering Culture Saily builds on an AI-native Product Engineering approach. Here, engineers own their work from idea to deployment, always focused on solving real customer problems. AI agents handle repetitive tasks, so engineers can spend more time on meaningful solutions. Engineers take responsibility for projects from start to finish. AI tools support daily work by automating routine steps. Team members suggest and implement improvements to the Saily platform. Curiosity, ongoing learning, and sharing knowledge are core values. Our main goal: make travel easy and stress-free for customers. How We Work Saily values personal growth, active contribution, and real impact. Hierarchy and rigid processes take a back seat to autonomy, context, and the right tools. Team members are trusted to do their best work with the support they need.

Join Saily, where we are revolutionizing mobile connectivity for travelers. Say goodbye to roaming fees and plastic SIM cards, and enjoy ultra-fast, secure mobile data across over 200 destinations. With millions of paying customers and hundreds of thousands of travelers engaging with Saily at any moment, we are dedicated to enhancing the travel experience.At Saily, we cultivate an AI-native Product Engineering culture. Here, every engineer is a builder, tasked with solving customer challenges from conception to deployment. Our AI agents handle repetitive coding tasks, empowering engineers to focus on impactful solutions. Every team member is encouraged to contribute ideas for improvement, ensuring that our focus remains on providing our customers with a seamless, connected journey.We prioritize growth over comfort, contributions over hierarchy, and impact over process. At Saily, we equip talented individuals with context, autonomy, and advanced AI tools to excel in their roles.

Saily is changing how travelers access mobile data, removing the need for roaming fees and physical SIM cards. The platform delivers fast, secure connectivity in more than 200 destinations, serving millions of customers and supporting hundreds of thousands of travelers worldwide. The Senior iOS Engineer role at Saily in Krakow centers on building solutions that directly address customer needs, from initial concept through to production. The team works within an AI-native Product Engineering environment, where engineers have access to AI agents that automate routine tasks. This approach frees up time for deeper, more meaningful work and encourages everyone to suggest and implement improvements. How the team works Engineers handle the full cycle of product development, solving real customer problems. AI tools automate repetitive work, letting engineers focus on high-impact tasks. Continuous improvement is expected and supported, team members regularly propose and drive changes. Curiosity and sharing knowledge are valued parts of the culture. The main goal is to create a smooth, reliable experience for travelers using Saily. Culture and values Saily puts growth, contribution, and impact first. The company values autonomy and provides context and AI-powered tools so engineers can do their best work, rather than focusing on hierarchy or rigid processes.

Join Our Team as a Backend EngineerAt dolarapp, we are seeking a skilled Backend Engineer to design, develop, and maintain robust backend systems that support our cutting-edge financial solutions. You'll work with a dynamic team dedicated to driving financial inclusion and revolutionizing how people manage their finances.Your Role & ResponsibilitiesEngage in greenfield development and the enhancement of existing systems.Develop REST APIs, engineer microservices, and improve critical business systems such as card payments, treasury management, transaction booking, and crypto liquidity.Utilize a technology stack centered around Java 25 with a Postgres database.Leverage Spring Boot for rapid and efficient delivery.Adopt a pragmatic approach to developing business logic with a focus on clean, maintainable code, using methodologies like TDD, DDD, and CI/CD.QualificationsA minimum of 5 years of experience in backend development, particularly with Java.Bachelor's Degree or higher in Computer Science, Mathematics, Physics, or related Engineering/Science fields.A quick learner with a driven attitude and excellent communication skills in English, both verbal and written.Proven experience in creating complex products used by millions in fast-paced startups.Why Work With Us?Attractive salary package.Sign-on stock options to share in the company’s success.Discretionary performance-related bonuses in the form of stock options.Paid annual leave.Ownership of the development process with a focus on customer impact.Access to the latest technologies.Collaborative team environment to foster skill development.

Saily, part of Nordsec, builds technology that helps travelers stay connected without roaming fees or physical SIM cards. The platform delivers secure, high-speed mobile data in over 200 destinations, serving millions of paying customers and hundreds of thousands of active travelers at any moment. This Senior Android Engineer role centers on Kotlin development for Saily’s mobile platform. The team values engineers who shape solutions from idea to launch, always with the traveler’s experience in mind. How Saily Works Engineers design and build solutions to real customer problems, not just code to a spec. AI agents automate repetitive work, freeing engineers to focus on high-impact tasks. Every team member suggests and implements improvements to the product and process. Continuous learning and sharing knowledge are core expectations. Customer experience drives every decision. Culture and Approach Saily emphasizes growth, contribution, and real impact over hierarchy or rigid process. Team members receive context, autonomy, and AI-powered tools to do their best work.

Tripadvisor helps travelers find experiences, advice, and options for any journey. Through brands like Tripadvisor, Viator, and TheFork, the company supports millions in discovering places to stay, activities to try, and restaurants to visit. Its platforms connect a global audience with travel content, recommendations, and marketplaces for experiences, lodging, and dining. Role overview The Senior Engineering Manager will join the Tripadvisor Experiences team, known as Viator. Viator provides access to over 400,000 experiences worldwide, from guided city tours to outdoor excursions. The team focuses on making it easy and reliable for travelers to plan and book memorable activities. Location and contract This is a hybrid role based in Krakow. The position is offered as a permanent employment contract. B2B contracts are not available for this role.

Are you passionate about creating powerful systems that enhance financial independence? Join DolarApp, a visionary startup dedicated to transforming access to dollar-based financial services throughout Latin America. As a Senior Python Engineer, you will architect, develop, and sustain scalable, secure, and high-performing backend systems that fuel our groundbreaking products. Collaborate with a skilled team to devise solutions that promote financial inclusion and revolutionize how individuals manage their finances. If you're eager to tackle intricate challenges and contribute significantly to a rapidly expanding company, we want to hear from you!What You'll Be DoingYou will be instrumental in developing the foundational infrastructure that supports our operations, including customer support bots and fincrime AI agents that will transform fintech operations.You will adopt a pragmatic approach to crafting our business logic, prioritizing clean code and maintainability, with a focus on rapid development through Test-Driven Development (TDD), Domain-Driven Design (DDD), and continuous integration and delivery.

What We’re SeekingWe are in search of a Senior Android Engineer who is enthusiastic about crafting stunning, dependable, and high-performance applications that provide exceptional user experiences. As a hands-on engineer, you will contribute top-notch code and elevate the engineering standards within our team.Join our Core Product Team, where you will help enhance and expand the ARQ experience—from our premier Android application to new product launches such as Premium, Credit, and various other financial solutions on our roadmap.Key ResponsibilitiesDesign and develop outstanding Android applications that users adore and trust.Write clean, maintainable, and high-performance Kotlin code utilizing contemporary Android tools and frameworks.Work closely with Product, Design, and Backend teams to implement features from inception to completion.Influence the architecture and development of the Android app as it continues to grow.Take ownership of features from conception through to launch, ensuring quality, refinement, and performance.Assist in enhancing code quality, testing, and development best practices within the team.Required QualificationsOver 5 years of experience developing Android applications for large user bases.Deep understanding of Kotlin and the Android ecosystem (Jetpack, Coroutines, Compose, etc.).Proficient in architecture patterns (MVVM, MVI, Clean Architecture) and testing frameworks.A strong sense of ownership and meticulous attention to detail in creating user-facing products.A passion for superior UX and product quality.Experience in fast-paced environments, preferably in fintech or consumer tech startups.Why You’ll Love Working HereAttractive salary package.Equity options, allowing you to own a piece of what you create.Performance bonuses (equity options).Generous paid vacation.Access to cutting-edge tools and technologies.Collaborate with a world-class team that will challenge and enhance your skills.The chance to influence the future of the financial system.

Saily, a division of Nord Security, seeks a Senior Automation QA Engineer based in Krakow. This role centers on raising application quality through automated testing methods. Collaboration is key. The Senior Automation QA Engineer will work with colleagues from various teams to uphold high quality standards and help ensure a dependable experience for users. Role overview Develop and maintain automation tests to improve software quality Work with cross-functional teams to identify and address quality issues Support a consistent and reliable user experience through rigorous testing Location This position is based in Krakow.

Who We AreAt Pave, we are revolutionizing compensation management by creating the industry’s most advanced platform. Our solution integrates the largest real-time compensation dataset with cutting-edge AI and machine learning capabilities. Trusted by over 8,500 companies, we empower organizations to make informed compensation decisions with confidence.Renowned companies such as OpenAI, McDonald’s, Instacart, Atlassian, Synopsys, Stripe, Databricks, and Waymo leverage Pave to turn compensation strategies into competitive advantages. Our platform manages over $190 billion in total compensation expenditures, and 70% of the Forbes AI 50 utilize Pave for compensation benchmarking.We are at the forefront of transforming compensation into a real-time and predictive process. With $160 million in funding from leading investors like Andreessen Horowitz, Index Ventures, Y Combinator, Bessemer Venture Partners, and Craft Ventures, we are poised for significant growth.The Communicate Team @ PaveOur Communicate team develops products that enable clear, transparent, and trustworthy communication of compensation to employees and candidates. As a member of this team, you will take ownership of essential experiences used daily by thousands to understand pay and rewards. This is a unique opportunity to join as a founding engineer on a high-impact product team, influencing not only what is built but also how our team operates, shaping our roadmap, and establishing the engineering culture from the ground up. In your role as a Senior Software Engineer, you will contribute to creating elegant, enterprise-grade product experiences for some of the world’s leading companies. The immediate focus is on enhancing enterprise capabilities and developing AI-driven compensation intelligence features that aid organizations in making informed pay decisions and provide employees with a clearer understanding of their compensation.

Enjoy Gaming develops live dealer shows and slot games for a global audience. The company values ownership, open communication, and honesty in every project and daily interaction. Role overview The Shift Engineer role is located in Krakow, Dolnośląskie, Poland. This position centers on ensuring that systems and equipment remain reliable and efficient during gaming operations. Collaboration with colleagues from different departments is key to maintaining safety and quality standards while supporting operational objectives. Main responsibilities Monitor and maintain equipment to ensure gaming sessions run without interruption. Respond promptly to technical issues that arise during assigned shifts. Work with other team members to troubleshoot and resolve equipment problems. Perform regular inspections and preventive maintenance tasks. Accurately document all maintenance and repair activities. Requirements Strong technical skills and a proactive approach to solving problems. Experience in a similar environment is helpful. An interest in gaming technology supports success in this position.

At Qualtrics, we empower the world's leading brands to deliver outstanding frontline experiences, cultivate high-performing teams, and design products that resonate with users. More than just a platform, we are the pioneers and custodians of the Experience Management category, proudly serving over 18,000 clients globally. Building a category requires tenacity, creativity, and a willingness to challenge the status quo—but above all, it demands cohesive, high-functioning teams dedicated to our customers' success.Joining one of our teams means becoming part of a dynamic group that is encouraged to set ambitious goals and move swiftly to realize them. We embrace strategic risks and tackle complex challenges collaboratively, ensuring the best solutions emerge through discussion and iteration. Growth opportunities abound—whether you're ready or not, they'll find you. From retail to government to healthcare, we are on a mission to reintroduce humanity, connection, and empathy to the business world. Join over 6,000 individuals worldwide who believe this is work worth pursuing.Senior Software EngineerWhy We Have This RoleOur team consists of passionate engineers at the forefront of cloud computing and web scalability. We manage and analyze vast amounts of data while developing solutions utilized by millions daily. Our innovation simplifies complex research processes. Our teams have the autonomy to select the best technologies for each challenge, allowing for significant impact across our entire product stack—from web and mobile UI to data visualization, analysis, microservices APIs, and data storage and processing. How You’ll Find SuccessAs a Software Engineer at Qualtrics, you will thrive on constructing straightforward solutions to intricate scalability challenges. Designing systems within an agile framework to endure rapid growth and taking ownership of quality throughout the process is both a rewarding challenge and a key reason why Qualtrics is such an exciting place to work. How You’ll Grow Qualtrics offers a fast-paced, dynamic environment where you can expand your experience through impactful projects, cutting-edge tools and technologies, and collaborating with like-minded technical professionals.

Kaseya® stands as the premier provider of comprehensive IT infrastructure and security management solutions tailored for Managed Service Providers (MSPs) and internal IT teams globally, driven by cutting-edge AI technology. Our exceptional suite of tools empowers organizations to effectively manage and secure their IT environments, fostering long-term business success. Over the past several years, Kaseya has consistently demonstrated strong double-digit growth and is supported by Insight Venture Partners www.insightpartners.com, a leading global private equity firm focused on high-growth technology and software businesses that catalyze transformative change across various industries.Since our inception in 2000, Kaseya has expanded its reach to serve customers in over 20 countries across diverse sectors, managing upwards of 15 million endpoints worldwide. To discover more about our innovative solutions and company culture, visit www.Kaseya.com.Kaseya is not your average workplace. We pride ourselves on our transparency and clear expectations. The countless individuals who thrive here are those who are committed to going the extra mile for our clients.Job Type: Full-Time Experience Level: Senior (7+ years)We are on the lookout for an accomplished Senior Python Developer who specializes in designing and architecting expansive systems. In this pivotal role, you will spearhead the development of robust, high-performance software platforms from the ground up. You will define the system architecture, guide critical technical decisions, and ensure our solutions are reliable, maintainable, and scalable for future growth. While experience with AI and automation is advantageous, your primary expertise will lie in scalable architecture, distributed systems, and engineering leadership. You will collaborate across various teams to deliver systems that underpin vital business functions and drive innovation.

Join the ARQ Team!At ARQ, we are revolutionizing the fintech landscape. Our aim is to transform global financial interactions, creating a seamless infrastructure for value transfer across borders. As we embark on this exciting journey, every new team member plays a crucial role in shaping our innovative products, company culture, and future growth. If you are passionate about tackling significant challenges and making a global impact while being part of a talented team, ARQ is the perfect place for you!Your RoleAs a Backend Engineer, you will be responsible for designing, developing, and maintaining robust backend systems that support our cutting-edge financial products. You'll work closely with a skilled team to craft solutions that promote financial inclusion and help users manage their finances more effectively.Key ResponsibilitiesFocus on developing new systems as well as enhancing existing ones.Engage in projects including building REST APIs, creating microservices, and evolving essential systems like card payments, treasury management, and cryptocurrency liquidity.Utilize Java 25 for backend development alongside a PostgreSQL database.Leverage Spring Boot to ensure quick and efficient delivery of solutions.Adopt a pragmatic approach to developing business logic, focusing on writing clean, maintainable code, and employing methodologies like TDD, DDD, and continuous integration and delivery.QualificationsA minimum of 5 years of experience in backend development with a strong command of Java.A Bachelor's degree or higher in Computer Science, Mathematics, Physics, or related engineering/science fields.A quick learner with a driven, results-oriented mindset and exceptional communication skills (fluent in English, both verbal and written).Proven experience in developing complex products utilized by millions in high-growth startup environments.

Who We AreAt Pave, we are revolutionizing compensation management with the industry's foremost platform. By merging the largest real-time compensation dataset with advanced AI and machine learning capabilities, we empower over 8,500 organizations to make informed compensation decisions with unparalleled confidence.Prestigious companies such as OpenAI, McDonald’s, Instacart, Atlassian, Synopsys, Stripe, Databricks, and Waymo rely on Pave to transform their pay strategies into competitive advantages. Our workflows manage a staggering $190 billion in total compensation spend, with 70% of the Forbes AI 50 utilizing Pave for compensation benchmarking.The future of compensation is real-time and predictive, and we are leading the charge. With $160 million in funding from prominent investors like Andreessen Horowitz, Index Ventures, Y Combinator, Bessemer Venture Partners, and Craft Ventures, we are committed to making compensation more accessible and effective.The Data Platform Team @ PaveThe Data Platform team is the backbone of Pave's operations, managing the data infrastructure that connects our platform to HRIS, EMS, ATS, and partner systems. This high-impact role is essential for ensuring that Pave delivers maximum value to our clients. As a founding engineer on this team, you will not only execute on a defined roadmap but also influence the platform's evolution, priorities, and engineering culture from the ground up. In your role as a Senior Software Engineer, you will design and develop the connectors, pipelines, and platform capabilities that enable Pave to efficiently serve enterprise customers at scale, significantly impacting the architecture and reliability of our systems.

Nord Security is seeking a Senior iOS Engineer to help build applications that strengthen user security and privacy. This position is based in Krakow and centers on designing and developing iOS apps that meet high standards for performance and responsiveness. Role overview This role focuses on creating secure and reliable iOS applications. Collaboration with other engineers and team members is an important part of the work, with a shared goal of delivering features that protect users and provide a smooth experience. What you will do Design and implement iOS applications with a focus on security and privacy Work closely with teammates to deliver high-quality, responsive features Contribute to the ongoing improvement of app performance Requirements Experience developing iOS applications Strong interest in user security and privacy Ability to work effectively within a collaborative team

Nord Security is looking for a Senior Android Engineer with strong Kotlin skills to help design and build mobile applications that support our security products. This position is based in Krakow. Role overview This role centers on developing Android applications that improve our security offerings. The Senior Android Engineer will work closely with colleagues from different teams to bring new features and improvements to our mobile products. What you will do Design and implement Android applications using Kotlin Work with cross-functional teams to deliver new features Contribute to the overall quality and user experience of our mobile apps Requirements Extensive experience developing Android applications with Kotlin Ability to collaborate with engineers, designers, and product teams Strong focus on building reliable and user-friendly software

About TripadvisorAt Tripadvisor, we believe in connecting travelers with experiences that are truly worth sharing. As a leading global platform, we are committed to becoming the most trusted source for travel guidance, enabling people to find the best accommodations, restaurants, and activities through our comprehensive range of brands including Tripadvisor, Viator, and TheFork.Our Experiences Engineering team, distributed across Europe, is pivotal in managing our platform and mobile applications, along with their supporting infrastructure. We create the systems that empower operators to enhance their businesses and facilitate third-party access to our diverse inventory. Our tools are designed to support our customer service teams in delivering exceptional service to travelers and operators around the globe.We are currently seeking a Software Engineer I to join our dynamic and expanding team. This position is available to candidates situated within a reasonable commuting distance (generally within 1.5 hours) of our Kraków office. We embrace a flexible work model that prioritizes remote work while also valuing essential in-person collaboration moments, including periodic gatherings at your nearest office for team engagement and planning.At Tripadvisor Experiences, we foster a friendly and enjoyable work environment focused on achieving results. Our engineers collaborate closely with product managers and designers throughout the entire software development lifecycle—from conceptual design to coding, testing, deployment, and beyond. Most of our engineers push code to production every few days, participating in a daily release cycle.Our engineers thrive on versatility, tackling a variety of technical challenges. This role has a backend focus, with opportunities to engage in frontend projects occasionally. While a willingness to learn is crucial, prior expertise in frontend development is not required; we provide training on that aspect during your onboarding process.The technologies we utilize include Java, React, TypeScript, GraphQL, Kubernetes, SQL, and NoSQL databases, all running on AWS infrastructure.