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Experience Level
Senior
Qualifications
Proven experience in backend development with a strong proficiency in languages such as Java, Python, or Node.js. Solid understanding of database technologies, including SQL and NoSQL. Familiarity with cloud services like AWS or Azure. Experience with RESTful APIs and microservices architecture. Ability to work collaboratively in an Agile environment. Strong problem-solving skills and attention to detail.
About the job
Join HelloFresh as a Senior Backend Engineer specializing in Deliveries & Orders, where you will design and develop robust backend systems that drive our logistics and order management processes. You will collaborate with cross-functional teams to enhance our platform, ensuring a seamless experience for our customers.
About HelloFresh SE
HelloFresh SE is a leading global meal kit delivery service that is committed to providing fresh, high-quality ingredients and delicious recipes to our customers. Our mission is to change the way people eat and cook, making it easier and more enjoyable for everyone to prepare healthy meals at home.
Flying Bisons is a premier Digital Consulting and Delivery company situated in the vibrant city of Warsaw, Poland. Our mission is to empower our clients to Unleash Digital Potential™. We excel in discovering, defining, designing, and developing top-tier digital products that yield impactful business results for our clients, creating outstanding digital exper…
Join our dynamic team at Lingarogroup as a Backend Developer! In this role, you will be responsible for designing, implementing, and maintaining server-side applications and databases, ensuring high performance and responsiveness to requests from the front-end. You will work closely with front-end developers to integrate user-facing elements with server-side logic.We are looking for someone who possesses a strong understanding of backend technologies, is highly motivated, and thrives in a collaborative environment.
Role overview Talan is seeking a Mid-Level Backend Spark Developer to join the team in Warsaw. This role centers on building and maintaining backend systems, with Apache Spark as a primary tool. The work directly supports ongoing projects and plays a key part in meeting team objectives. What you will do Develop backend solutions that use Spark as a central technology Collaborate with colleagues from various disciplines to deliver dependable software Support project progress by helping meet milestones and upholding technical standards Location This position is based in Warsaw.
Join Larian Studios as a Backend Developer, where you'll play a pivotal role in creating immersive gaming experiences. We are looking for innovative thinkers passionate about backend technologies to help design and implement scalable systems that enhance our gaming platforms.
Join our dynamic team at Renmoney as a Java Backend Developer, where you will contribute to our core engineering teams, including Banking, Loans, Core Tech Platform, and Cards. Our teams are focused on developing high-impact, backend-heavy systems that drive essential financial products and internal platforms.At Renmoney, we prioritize engineering excellence—not only in delivery speed but also in system quality and the artistry of software development. We are cultivating a collaborative engineering culture that values clear communication, thoughtful architecture, rigorous testing, and teamwork.Our tech stack includes: Java • Spring Boot • AWS (EKS) • MySQL • Kafka • Redis • Grafana • Prometheus.
Join our dynamic team at Evolution as a Backend Developer specializing in Scala. In this role, you will be responsible for designing, implementing, and maintaining high-performance backend systems that are scalable and robust. You will collaborate with cross-functional teams to deliver innovative solutions that meet our clients' needs.
Jobgether is hiring a Senior Node.js Backend Developer in Poland for a partner company. This role joins an experienced engineering team focused on building secure, scalable backend systems that power digital financial services worldwide. Key Responsibilities Design and develop backend solutions with Node.js for global financial products Build and maintain mission-critical services and APIs supporting real-time transactions Architect infrastructure for distributed systems to ensure reliability Optimize backend performance while maintaining strong security standards Collaborate with engineers across different regions Contribute to advancing next-generation financial technology Requirements Proven experience in backend architecture and distributed systems Advanced skills in Node.js development Ability to tackle complex technical challenges Interest in scaling secure, real-time applications Self-motivated and comfortable working with autonomy in a remote-first environment Located in Poland Work Environment This is a remote-first position. The team emphasizes independence, responsibility, and continuous learning. Senior Node.js Backend Developers here work closely with talented colleagues and play a direct role in shaping products used by customers around the world.
Dołącz do naszego zespołu jako Senior Backend Developer! Szukamy utalentowanej osoby, która będzie odpowiedzialna za długofalowe rozwijanie i utrzymywanie aplikacji backendowych. Twoje zadania będą obejmować optymalizację istniejących rozwiązań oraz zapewnienie zgodności z najlepszymi praktykami wytwarzania oprogramowania. Jeśli jesteś pasjonatem technologii i chcesz pracować w dynamicznym środowisku, to ta oferta jest dla Ciebie!
Highlights Location: Fully Remote (CET hours preferred) Compensation: €5,100 - €6,300 per month + stock options Language: Russian-speaking team About Fundraise Up At Fundraise Up, we are revolutionizing the way nonprofits receive donations. Our innovative platform facilitates a fast, seamless, and user-friendly donation experience, empowering organizations to harness the power of generosity. Our technology processes tens of millions of dollars in donations monthly, focusing on enhancements that lead to faster load times, higher conversion rates, and accessible design. Trusted by renowned nonprofits like UNICEF and the Alzheimer’s Association, and with a stellar 4.9/5 rating on leading software review platforms, our product is recognized for both its effectiveness and quality. A Truly Global Product We serve nonprofit organizations across North America, the UK, Australia, and Europe in the enterprise sector. Our robust product ecosystem includes a modern checkout experience, customizable widgets, donor and organization portals, admin tools, and multiple internal applications. Our backend technology stack features Node.js (Koa, NestJS) and MongoDB. The frontend utilizes Webpack, Vue.js, and React, with a significant portion of the codebase written in TypeScript. For high-volume messaging and background processing, we implement Kafka and Bull (Redis). Analytics are managed through ClickHouse, while Elasticsearch is utilized for search functionalities. The Team We are a diverse team of over 160 professionals, including more than 80 engineers, distributed across Spain, Poland, Portugal, Georgia, Armenia, Serbia, Turkey, and Cyprus. Our team members typically possess 5-10+ years of experience, fostering a culture of technical curiosity and knowledge sharing. Despite our size, we maintain a close-knit team environment where every contribution is valued, and collaboration is key. We prioritize strong engineering practices and a product-first mindset, hosting biweekly engineering forums to share insights and celebrate achievements. Join a team where quality, mentorship, and mutual respect are at the forefront. About the Role As a Backend Developer, you will be instrumental in architecting the core engine that drives our global platform. You will tackle complex challenges within a high-load, distributed system, constructing and scaling the infrastructure that processes millions in donations. This role goes beyond maintenance; it involves active development and innovation.
Join our dynamic team at dev2 as a Lead Software Engineer specializing in backend development. You will play a pivotal role in designing and implementing robust, scalable, and high-performance software solutions. Your expertise will drive innovation and help shape the future of our products while mentoring junior engineers and collaborating with cross-functional teams.
Location: Poland About Us: RTB House stands at the forefront of marketing technology, delivering cutting-edge solutions to leading brands and agencies around the globe. Our proprietary ad-buying engine is the world's first to utilize Deep Learning algorithms exclusively, empowering advertisers to achieve remarkable results at every stage of their marketing funnel. We are on the lookout for a Backend Python Developer to become an integral part of our internal team at RTB House. In this role, you will engage in the development of applications and tools that directly enhance our real-time bidding operations. Collaborating with seasoned engineers and product teams, this position offers a fantastic opportunity for developers eager to expand their skill set, tackle real-world challenges, and create robust software that makes a tangible impact.
MasterBorn is seeking a Junior Backend Developer with a focus on Node.js. This position is open to candidates based in Wrocław or those who prefer to work remotely. Role overview This role centers on developing server-side applications using Node.js. Junior Backend Developers at MasterBorn collaborate with experienced colleagues and contribute to a range of technical projects. The position offers a chance to build practical skills and gain exposure to modern backend technologies. What you will do Work on backend features and APIs using Node.js Collaborate with other developers to deliver project goals Contribute to the development and maintenance of server-side applications Requirements Interest in backend development and Node.js Willingness to learn and grow as part of a team Ability to work from Wrocław or remotely
Join HelloFresh as a Senior Backend Engineer specializing in Deliveries & Orders, where you will design and develop robust backend systems that drive our logistics and order management processes. You will collaborate with cross-functional teams to enhance our platform, ensuring a seamless experience for our customers.
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.
Join our innovative team at dev2 as a Backend Software Engineer where you will play a crucial role in developing scalable backend solutions. Your expertise will help shape our technology stack and improve system performance. You will collaborate with cross-functional teams to design, implement, and maintain high-quality applications.
Join Our Team at HSP GroupHSP Group stands at the forefront of global expansion services, dedicated to simplifying the complexities of international operations. We offer a comprehensive suite of solutions in legal entity setup, global HR, payroll, compliance, tax, and advisory, empowering our clients to scale efficiently while minimizing risks.As a pioneering startup in the dynamic field of global expansion management, we pride ourselves on our commitment to innovation, delivery excellence, and customer satisfaction. You will be an integral part of our small yet highly skilled team, contributing directly to our success.About Gateway HRGateway HR is our specialized HRIS platform tailored for global expansion management, featuring seamless integration with our flagship Gateway GXM platform. This enables functionalities such as automated payslip generation, smart contract management, and effortless cross-border compliance.Our ecosystem already incorporates AI-driven document recognition and serverless architecture on Azure, alongside a diverse range of integrated tools for HR, entity management, and compliance.Your RoleThis is a fully remote role. We are seeking a Lead Backend Engineer to spearhead the technical vision for Gateway HR and enhance its integration with GXM. You will engage in hands-on platform development while leading external development teams—refining the architecture, innovating new features, and upholding HSP's engineering standards across the codebase.This position is not solely managerial; you will actively code, review pull requests, challenge architectural choices, and launch features while setting high standards for the team.
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.
Join HelloFresh in the vibrant city of Warsaw as part of our dynamic HelloTech organization, a global technology powerhouse comprising over 1,000 talented individuals. Together, we create innovative digital solutions that elevate the culinary experience for our customers. From meal kits and convenient ready-to-eat options to specialty items such as premium meats and pet food, HelloTech is the driving force behind our mission to deliver personalized food solutions to millions each month. Our subscription-based, direct-to-consumer model is deeply rooted in technology, ensuring excellence at every stage—from customer-facing applications and personalized experiences to robust pricing strategies, accurate forecasting, and optimized supply chains. Despite our brands catering to unique customer needs, we thrive on shared platforms, data, and operational excellence driven by HelloTech. At HelloTech, we operate through autonomous, cross-functional alliances, each responsible for specific products or domains. By collaborating within our Warsaw office, you will contribute to the development of scalable, data-driven products that enhance the way customers discover, order, and enjoy HelloFresh offerings, now and in the future.
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 our dynamic team at dev2 as a Senior Backend Software Engineer. In this critical role, you will design, develop, and maintain robust backend systems that empower our applications. You will work closely with cross-functional teams to ensure the seamless integration of user-facing elements with server-side logic. This is an exciting opportunity to contribute to cutting-edge projects in a collaborative environment.
