Senior Fullstack/Backend Software Engineer (Remote in Poland)

Please note that this opportunity requires relocation to our Milan office.About SatispayAt Satispay, we are on a mission to revolutionize everyday payments, making them simple, equitable, and accessible to everyone. Our vision is to shape the future of money, and we are just getting started. Join our movement that empowers millions, driven by a shared purpose to tackle significant challenges. We thrive on speed, bold thinking, and mutual trust, encouraging each other to challenge the status quo while learning and growing together.If you seek more than just another job and wish to create something impactful alongside a talented team, you’ve come to the right place.Your ResponsibilitiesAs a Senior Backend Software Engineer in the Business Team, you will play a pivotal role in shaping the future of digital welfare payments, managing everything from employer benefits to complex products. You will oversee the end-to-end experience for both employers and employees, ensuring long-term satisfaction. Your responsibilities will include:Drive Multi-Service Solutions: Conduct technical analysis for medium-to-large projects impacting multiple employer domain services. Design highly-available, scalable, secure, and maintainable solutions at the core of welfare offerings.Ensure Technical Quality: Implement robust testing strategies, balancing automation and manual coverage, while monitoring gradual rollouts to ensure precise and reliable welfare distributions.Resolve and Anticipate Blockers: Proactively identify and resolve technical obstacles, fostering knowledge sharing across your organization. Address unique challenges in B2B registration flows and high-volume benefit allocations while ensuring code quality through active reviews.Execution and Ownership: Take full ownership of your projects from inception to completion, delivering features that genuinely meet user needs—from employer signup to the first employee spending their welfare benefits—through seamless and efficient backend integration.

Please be aware that this position requires relocation to our Milan office.About SatispaySatispay aims to transform everyday payments, making them straightforward, equitable, and accessible to all. Our mission has evolved to shape the future of finance.We are a movement empowering millions, united by a common goal to address significant challenges. We act swiftly, think innovatively, and trust one another to question the status quo, continuously learning and evolving.Joining the Core Team, you will be engaged with critical systems that manage interactions with external banks, orchestrate payments, and establish essential infrastructures for Identity and Access Management (IAM). The team also handles risk services, specifically credit risk management and fraud detection.If you're eager to contribute to something impactful that underpins our product teams, you've found the right place.Your ResponsibilitiesAs a Senior Backend Software Engineer on the Core Team, you will play a vital role in architecting the backbone of our payment platform. You will ensure the technical quality and timely delivery of complex systems that have a significant impact across various services and product teams.Your daily tasks will include:Engineering core platform domains: Contributing to the design and development of our most critical systems, including the Transaction Ledger, Identity & Access Management (IAM), and Payment Orchestration. You will ensure these systems remain high-performing, scalable, and functional for seamless integration by our product teams.Scaling risk & financial engines: Optimizing and implementing services dedicated to bank integrations, credit risk, and real-time fraud detection, building robust logic that safeguards our financial ecosystem.Cross-team technical leadership: Leading technical analysis for projects across multiple services, facilitating discussions, and producing high-quality documentation (Smart Papers) that ensure clarity and robustness in your designs for stakeholders and other engineering teams.

Important: This role requires relocation to our Milan office.About SatispaySatispay is on a mission to transform everyday payments, making them simple, equitable, and accessible for all. Our vision extends beyond payments; we aspire to redefine the future of finance. Join our movement that empowers millions, driven by a collective purpose to tackle significant challenges. We're just getting started, and we invite you to be part of this journey.We thrive on innovation, embrace bold thinking, and foster a culture of trust that encourages challenging the norm while continuously learning and evolving. If you seek more than just a job and wish to create a meaningful impact alongside a talented team, you are in the right place.Your RoleAs a Staff Software Engineer within the Consumer Wealth team, you will take on a pivotal role in shaping the financial futures of our users as they grow and manage their savings and investments. You will serve as the technical authority in the Consumer domain, spearheading initiatives that empower millions to achieve their financial well-being through our innovative savings products, invested money boxes, and investment solutions.Here’s a glimpse into your daily responsibilities:Strategic Technical Direction: Formulate the technical strategy for the Consumer Wealth domain. You will architect complex subsystems that facilitate savings and investment features, ensuring cross-product synergy while leading initiatives that impact multiple teams.Architectural Advancement: Design and construct scalable, high-quality systems that address intricate financial engineering challenges, including the management and simplification of our most complex back-end systems for savings and wealth management.Technical Leadership: Cultivate relationships across the organization to foster technical alignment, represent our technical vision both internally and externally, and remain at the forefront of emerging trends in FinTech and wealth management.Talent Development: Mentor the next generation of technical leaders and promote a culture of excellence in engineering and continuous improvement.Driving Impact: Contribute significantly to user wealth growth and help them achieve their financial aspirations through your work on the Consumer Wealth back-end infrastructure, directly advancing Satispay's mission.Expect a dynamic environment filled with challenges, collaboration, and the freedom to bring your innovative ideas to fruition. Our technology stack includes a variety of cutting-edge tools and platforms.

About the TeamJoin the Sell Online Tribe, a dynamic group that empowers merchants to establish their presence online. We create innovative tools that enable millions of entrepreneurs, from barbers to bakers, to market their products and services effortlessly. Our core focus lies in the Online Store and Bookings products, which form the backbone of SumUp’s ecosystem, allowing merchants to manage appointments, highlight their offerings, and process payments—all from their mobile devices.We are a collaborative, cross-functional team of Product Managers, Designers, and Engineers dedicated to delivering exceptional mobile experiences. As a part of this team, you will play a crucial role in expanding into new sectors, bridging the gap between web and mobile, and making digital selling seamless for small businesses worldwide.About the RoleAs a Senior Backend Engineer, you will be instrumental in enhancing SumUp's major merchant-facing online products within the Bifrost team. You will contribute to the development and scaling of key products such as Payment Links, Virtual Terminal, and Unified Gift Cards, while also working on integration solutions that are vital for numerous other SumUp offerings.We are looking for a developer who prioritizes reliability, teamwork, and continuous growth. Your backend expertise will thrive in a high-impact environment where your contributions directly influence merchant success and team scalability.What You’ll DoEnsure scalability and continuous growth of high-priority online products at SumUpDrive the implementation, development, and integration of Online Checkouts across SumUpEngage actively in planning and review sessions at quarterly and sprint levels, providing constructive feedback and estimationsMonitor existing services, applying necessary fixes to maintain platform reliabilityDevelop new features with maintainable and testable codeEnhance application performance for scalabilityParticipate in code reviews to uphold high coding standardsYou Will Excel in This Role If:You have 5+ years of experience in backend engineering with GolangYou possess a robust understanding of fundamental system architecture, design principles, data modeling, and API designYou have substantial experience with distributed and fault-tolerant systemsYou have a passion for delivering high-quality software solutions

About the RoleJoin Logz.io as a Backend Software Engineer and be part of a dynamic team that is reshaping the observability landscape. In this role, you will design and develop robust backend systems that scale effectively, ensuring seamless integration and exceptional performance.Key ResponsibilitiesDevelop and maintain scalable backend services and APIs.Collaborate with cross-functional teams to define, design, and ship new features.Troubleshoot and optimize existing systems for performance and scalability.Participate in code reviews and contribute to team knowledge sharing.

Join Box as a Senior Backend Software Engineer and be part of a pioneering team that is reshaping the world of Intelligent Content Management. In this role, you will work on high-scale, distributed systems, tackling significant engineering challenges such as performance optimization, auto-scaling microservices, ensuring data integrity during large migrations, and maintaining search indexing accuracy. Your contributions will directly impact thousands of enterprise customers, helping them manage their critical business content effectively. If you're ready to drive innovation in AI-powered content management, we want to hear from you!

At Veeam Software, we pride ourselves on being the experts in Data and AI Trust, dedicated to empowering organizations to fully understand, secure, and ensure the resilience of their data and AI systems. Recognized as the market leader in data resilience and security posture management, we are perfectly positioned to navigate the convergence of identity, data, security, and AI risk. With our headquarters in Seattle and a presence in over 30 countries, we protect the operations of more than 550,000 customers globally, who rely on us to keep their businesses running smoothly. Embark on this exciting journey with us as we continue to innovate, learn, and create significant impacts for some of the world’s largest brands.About the RoleJoin us as we lead the charge in Kubernetes Backup and Disaster Recovery. Our Veeam Kasten platform is specifically designed for Kubernetes data management, providing enterprise operations teams with a seamless, scalable, and secure solution for backup, restore, disaster recovery, and application mobility. With our commitment to continuous optimization and enhancement, we are integrating our tools with SaaS services and expanding support for virtual machines hosted in Kubernetes, ensuring that we meet the evolving needs of our customers.

Waymo is pioneering the future of mobility with its cutting-edge autonomous driving technology. Established in 2009 as the Google Self-Driving Car Project, our mission is to become the world’s most trusted driver. Our flagship product, the Waymo Driver—The World’s Most Experienced Driver™—aims to revolutionize access to transportation while drastically reducing road traffic fatalities. The Waymo Driver powers our fully autonomous ride-hailing service and is compatible with various vehicle platforms and applications. With over ten million rider-only trips completed and vast experience from driving over 100 million miles on public roads and extensive simulations across more than 15 U.S. states, we are leading the way in safety and efficiency.The RO Performance team plays a pivotal role in enhancing Waymo's self-driving technology. We are responsible for developing and maintaining the crucial infrastructure needed to process and analyze vast amounts of data from real-world driving logs and simulations.Our systems create essential metrics and dashboards that are vital for monitoring product performance, pinpointing areas for enhancement, and facilitating data-driven decision-making. The insights generated by our team directly impact Waymo's operational strategies, weekly performance evaluations, and, ultimately, the safety and reliability of our autonomous vehicles.In this hybrid role, you will report directly to a Staff Software Engineer.

Join Box – The Future of Content ManagementBox, Inc. (NYSE:BOX) stands as the leader in Intelligent Content Management. Our innovative platform empowers organizations to enhance collaboration, manage the entire content lifecycle, secure vital documents, and transform business workflows through enterprise AI. Established in 2005, we simplify operations for renowned global organizations, including JLL, Morgan Stanley, and Nationwide. With our headquarters in Redwood City, CA, and offices worldwide, Box is at the forefront of the AI-first business era.At Box, you will play a pivotal role in advancing our platform. In a landscape where content drives daily operations across teams and departments—ranging from contracts to marketing assets—our mission is to infuse intelligence into content management, enabling customers to revolutionize workflows across their enterprises. As we harness the power of AI alongside enterprise content, we present an unmatched opportunity to reshape collaboration globally. Be a part of this significant transformation at Box!Why We Need YouThe Content Capabilities team is a newly established group with the ambitious vision of propelling the Box Content Cloud into its next wave of growth. We are dedicated to developing innovative platform capabilities that empower our product teams and customers to create unique, scalable experiences for millions of users. As we launch our first set of features, unlocking new use cases and significantly enhancing user collaboration on content, we invite a skilled Backend Software Engineer to join our team. You will have the opportunity to collaborate with a talented group of professionals, contributing to our roadmap of new capabilities and shaping the future of content management.

Join Hostinger as a Backend Software Engineer specializing in Node.js in a fully remote position! In this role, you will be responsible for developing high-performance backend solutions that support our web applications and services. Collaborate with a dynamic team of developers and contribute to exciting projects that empower our users around the globe.

Join Moss, where we empower finance professionals to automate their workflows and make strategic decisions.Our unique culture is centered around impact and growth, fostering an environment where each team member is encouraged to learn and succeed. Recognized by Sifted’s Rising 100 and LinkedIn's Top Startups, we aim to advance your career while making Moss a lasting success.Our Engineering teams are looking for talented Senior Backend Engineers (f/m/d) to join various teams in Warsaw. Open positions include:Sales EnablementPricing & BillingAcquisitionSpend ManagementActivation & Card SpendIn this role, you will collaborate closely with designers, product managers, and frontend engineers to bring innovative ideas to fruition, ensuring our product provides intuitive and efficient tools for business automation and simplification.

Teltonika Networks is looking for a Junior Backend Software Engineer to join the team in Warsaw, Masovian Voivodeship, Poland. The company develops networking equipment for industrial and enterprise use, including routers, switches, gateways, and modems. Teltonika’s technology supports clients in sectors such as Industry 4.0, Smart City, and Green Energy. For more details on their products, visit Teltonika Products. Role overview This position involves hands-on work with embedded Linux software and API frameworks for IoT devices. The team is international and values collaboration to solve technical challenges. The role is well suited to early-career engineers who want to deepen their technical skills while working on real-world projects. Main responsibilities Design, implement, and maintain embedded Linux software for IoT hardware. Develop and support an API framework used by multiple R&D teams. Analyze and integrate new technologies into existing systems. Collaborate with colleagues from different countries to address complex problems. Requirements At least 1 year of experience programming in C. Minimum 1 year working with APIs. Proficient in Shell and Python scripting. Familiarity with Git version control. Experience working with Linux-based systems. Strong English communication skills, both written and spoken. Preferred qualifications Technical degree in a relevant field. Understanding of computer networking concepts. Experience with Lua programming. Knowledge of OpenWrt. Benefits Opportunities for growth within a growing company. Work on ambitious projects focused on industrial networking devices. Private medical care (Medicover Premium) and Multisport card. Hybrid work model with flexible arrangements. Extra day off for your birthday. Team-building activities to support collaboration.

About Our Team At SumUp, we provide a comprehensive Point-of-Sale (POS) solution designed to empower businesses such as cafes, shops, bars, and salons to streamline operations and foster growth. Our platform encompasses a variety of features including product catalogs, inventory management, business analytics, compliance assistance, and loyalty programs. The Fiscalization team is dedicated to ensuring compliance in countries like Italy, Sweden, Norway, Belgium, and Austria, among others. We are also pioneering the integration with third-party services for fiscalizing receipts. As a Senior Backend Engineer, you will work alongside a vibrant, cross-functional team comprising Product Managers, Designers, Engineering Managers, and fellow engineers. Your Role In this position, you will develop secure backend systems that ensure SumUp's POS products are compliant across various countries on our roadmap. You will collaborate with the Fiscalization squad to devise unique solutions tailored to the challenges in each market. We are looking for a developer who values user-centric design, precision, and seamless collaboration. You will excel in a structured communication environment and thrive in a cross-functional team. This is a B2B role based in Warsaw. Key Responsibilities Design and maintain fiscal compliance solutions to support SumUp's expansion across Italy, Sweden, Norway, Belgium, Austria, and other European markets. Develop integrations with third-party services for receipt fiscalization and regulatory reporting. Navigate SumUp's intricate POS ecosystem and familiarize yourself with fiscalization frameworks across multiple jurisdictions. Work collaboratively with team members and stakeholders distributed across 5+ cities in a hybrid working model. You Will Succeed in This Role If You Have: 5+ years of experience in backend engineering with expertise in Java and/or Kotlin. A solid understanding of system architecture, design principles, data modeling, and API development. Hands-on experience with distributed and fault-tolerant systems. Proficiency in AWS and Kubernetes. Strong knowledge of Kafka, PostgreSQL, and CQRS.

Please be aware that this position necessitates relocation to our Milan office.About SatispayAt Satispay, we're on a mission to transform everyday payments into a streamlined, fair, and universally accessible experience. Our vision extends beyond just payments; we are shaping the future of financial transactions. Join our movement, which empowers millions and embraces a collective ambition to solve significant challenges. We are just getting started.As part of the Core Team, you will engage with critical systems that encompass interactions with external banks, payment orchestration, and the foundational infrastructure for Identity and Access Management. Our responsibilities also include risk management services focusing on credit risk and fraud detection.We operate at a fast pace, encourage bold thinking, and foster a culture of trust, allowing us to challenge conventions while learning and growing together. If you are seeking more than just a job—if you want to create something meaningful with a talented team—this is the place for you.Key ResponsibilitiesAs a Staff Software Engineer within the Core Team, you will play a pivotal and strategic role in developing the backbone of our payment platform. Your work will focus on mission-critical systems that power Satispay, ensuring reliability, consistency, and security for millions of users.Your daily activities will include:Define Technical Strategy: You will establish the long-term technical vision for our key domains, architecting complex subsystems that serve as the foundation for the company, balancing cross-product demands with the need for speed and reliability.Architect Core Financial Systems: You will design and scale high-throughput engines that manage our transaction ledger, payment orchestration, and external bank integrations, ensuring the accuracy and availability of our

We are seeking an experienced Senior Backend Engineer to become a vital member of our dynamic, cross-functional product teams. This role demands extensive technical expertise, exceptional communication abilities, and a proactive, collaborative approach. The successful candidate will be deeply involved in ongoing client projects and seamlessly integrated into our established workflows.

Relocation Requirement Please note: This role requires relocation to our Luxembourg office. About Satispay Satispay is working to make daily payments simple, fair, and accessible. The company’s mission is to reshape how people handle their finances, aiming to set new standards for the industry. With millions already using Satispay, the team is united by a drive to solve real problems and push boundaries. The culture encourages quick action, open-minded thinking, and constant learning. Collaboration and support are central to how the team operates. Role Overview The MiFID/MiCA Compliance Specialist acts as a subject matter expert within the investment firm, with a primary focus on MiFID II and MiCA compliance for all investment products. This position is integral to maintaining regulatory standards and supporting the firm’s growth in a complex financial landscape. Main Responsibilities Compliance and Risk Management Support the Compliance department head in running and maintaining an effective Compliance Monitoring Program to meet all regulatory requirements. Carry out second-line defense controls, assess risks for both current and new investment products, and deliver actionable recommendations. Lead proactive compliance initiatives as assigned. Location This position is listed for Warsaw, Poland, but requires relocation to Luxembourg.

Senior Software Engineer, Data Foundations ABOUT THE ROLE At Peloton, we view Data as a Product—a vital asset that drives every member interaction and influences business decisions. Our Datastores team is committed to offering a dependable, secure, and high-performing data persistence layer for application services throughout the organization. Our core principles include: 1. Safeguard the data, 2. Optimize for scalability, speed, and reliability, and 3. Minimize manual effort. We are seeking a Senior Software Engineer with extensive experience in constructing and managing data-intensive systems to join our Datastores team. This position is perfect for a backend engineer who has developed and maintained production systems heavily reliant on databases, caching layers, and data pipelines, and who is eager to advance their knowledge in scalable, cloud-native data infrastructures. You will collaborate at the intersection of application engineering and data platform reliability, working alongside service teams to enhance the storage, access, scalability, and observability of data across Peloton’s ecosystem. YOUR DAILY IMPACT AT PELOTON Your responsibilities will include: Designing, building, and maintaining backend systems that depend on scalable and highly available data persistence layers. Collaborating with service teams to refine database design, enhance query performance, and optimize data modeling. Contributing to automation efforts surrounding infrastructure provisioning using tools like Terraform and Backstage, while improving developer experience by creating self-service tools for databases and caching systems. Focusing on observability, performance insights, and autoscaling strategies for production datastores. Participating in architectural discussions regarding multi-regional data persistence and global scalability. This role merges hands-on backend engineering with significant exposure to cloud data systems and platform reliability challenges. WHAT YOU BRING We are looking for proficient backend engineers who are data-centric—those who have built systems where data performance, reliability, and modeling are crucial. 5+ years of software engineering experience in developing production backend systems. Strong familiarity with relational databases such as PostgreSQL or MySQL, including schema design, indexing, and query optimization. Experience with NoSQL datastores like DynamoDB, Redis, Elasticsearch, or Memcache. Exposure to data pipelines, event-driven architectures, and cloud technologies.

Join HelloFresh in Warsaw as part of our HelloTech organization, a vital segment of our global technology team comprising over 1000 professionals. We are dedicated to developing digital products that enhance the end-to-end food experience, encompassing meal kits, ready-to-eat meals, and even specialty items like pet food and premium meat & seafood. Our technology platforms empower millions of customers with personalized food solutions every month.Our direct-to-consumer subscription model is fueled by cutting-edge technology that optimizes every customer interaction—from engaging applications and personalization algorithms to pricing strategies and supply chain management. Although our brands operate independently to cater to diverse customer needs, they are unified by shared platforms, data, and operational excellence crafted by HelloTech.At HelloTech, we work in autonomous, cross-functional teams that take ownership of specific products and domains. By collaborating with our Warsaw office, you will contribute to scalable, data-driven products used across various markets, leveraging a modern tech stack and working with international teams to continuously enhance how our customers discover, order, and enjoy HelloFresh products now and in the future.

Join the forefront of online security technology with the world’s leading VPN provider!Are you a passionate problem-solver eager to make impactful contributions? Become a key player in the team behind Threat Protection Pro, the NordLynx protocol, and the fastest VPN globally—tools designed to restore privacy, security, and user control.Your role? Empower millions to reclaim their online security, privacy, and data integrity.As a Senior Backend Engineer on our Notification Center Team, you’ll be vital in designing and maintaining the microservices that facilitate seamless in-app notification delivery. We take pride in being the backbone of numerous features that depend on these notifications for smooth functionality. Our collaborative spirit drives us to work closely with other teams at Nord to pave the way for a scalable future.Ready to tackle the challenges of scalability, code quality, and service stability? Join our team of skilled engineers dedicated to technical excellence and help shape the future of NordVPN and its associated products!