Senior Full-Stack Developer (Angular + Node.js)

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.

Join Our Team!At Xebia, we cultivate expertise and innovation. For nearly two decades, we've been delivering cutting-edge digital solutions to clients across various industries around the globe, partnering with renowned brands like UPS, McLaren, Aviva, Deloitte, and many more.Our passion lies in Cloud technologies. We proudly partner with the leading Cloud providers, including Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP), and were the first AWS Premier Consulting Partner in Poland.Previously known as PGS Software, we became part of the Xebia Group in 2021, a network of companies committed to transforming the technology landscape.Xebia epitomizes innovation, a talented workforce, and technical excellence, offering us the chance to work on groundbreaking global projects.Our mission is succinct: to be recognized as the authority in our domain.What sets us apart? It's our attention to detail, commitment to knowledge, and belief in people’s potential, fostering the growth of every team member. To truly appreciate our culture and values, we invite you to visit us!Now that we've shared our story, we look forward to learning about you.Send us your resume and start the journey with #Xebia!Your Role:Design, develop, and maintain scalable backend services and APIs using Node.js and TypeScript, ensuring optimal performance and reliability.Architect and implement RESTful and/or GraphQL APIs along with microservices-based solutions to address complex business needs.Collaborate with cross-functional teams to define technical solutions, enhance system architecture, and uphold engineering best practices.Optimize database schemas and queries, ensuring data integrity, security, and performance across both relational and non-relational databases.Support DevOps and cloud initiatives by engaging with CI/CD pipelines, containerization, monitoring, and cloud infrastructure, ensuring seamless deployments and system observability.

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 Team!At Xebia, we are dedicated to fostering a culture of innovation and professional growth. For over 19 years, we have been delivering cutting-edge digital solutions to clients in various industries around the globe. Notable brands such as UPS, McLaren, Aviva, and Deloitte trust us with their digital transformation journeys.Our enthusiasm for Cloud-based solutions is unparalleled, driven by our partnerships with leading Cloud providers including Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP). We proudly became the first AWS Premier Consulting Partner in Poland.Previously known as PGS Software, we joined the Xebia Group in 2021, aligning with a network of companies committed to making a significant impact in the tech world.Xebia embodies innovation and technological excellence, with a mission to be recognized as the authority in our domain. Our commitment to detail, knowledge sharing, and nurturing individual potential sets us apart.We are eager to learn more about you!Send us your resume to initiate a conversation and become a part of the #Xebia community!Your Responsibilities:Design, develop, and maintain scalable backend services and APIs utilizing Node.js and TypeScript, ensuring exceptional performance and reliability.Architect and implement RESTful and/or GraphQL APIs and microservices-based solutions to meet complex business requirements.Collaborate with cross-functional teams to define technical solutions, enhance system architecture, and advocate for engineering best practices.Optimize database schemas and queries, guaranteeing data integrity, security, and performance across both relational and non-relational databases.Support DevOps and cloud initiatives through engagement with CI/CD pipelines, containerization, monitoring, and cloud infrastructure, facilitating smooth deployments and system observability.

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 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 Our Team!Xebia is a renowned tech innovator where professionals thrive. For nearly two decades, we have been creating cutting-edge digital solutions for a diverse range of clients worldwide, including industry giants like UPS, McLaren, Aviva, and Deloitte.Our passion lies in Cloud technologies, underscored by partnerships with leading Cloud providers such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP). Notably, we were the first AWS Premier Consulting Partner in Poland.Previously known as PGS Software, we became part of the Xebia Group in 2021, a collection of companies committed to making a significant impact in technology.Xebia embodies innovation, a talented workforce, and technological mastery, allowing us to work on groundbreaking global projects. Our mission can be summed up in one word: Authority. We aspire to be acknowledged as the preeminent authority in our domain.What sets us apart? It's our attention to detail, commitment to knowledge, and belief in individual potential—fostering the growth of every team member. We invite you to come and see the difference for yourself!We look forward to learning more about you. Send us your resume and let's begin the conversation!

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.

About FlosumFlosum is a successful, self-sustaining B2B SaaS organization that has developed a premier Salesforce-native DevSecOps, Data Protection, and Security platform. Our solutions are utilized by Fortune 500 companies across some of the most highly regulated sectors globally, including financial services, healthcare, government, and insurance.Unlike many startups, we have achieved profitability through our own efforts, establishing ourselves as a credible player in enterprise software. As a Salesforce Summit Partner and recipient of the Innovation Award, we are proud to stand alongside industry leaders.Our platform is built entirely on Salesforce, catering to enterprises that prioritize security, compliance, and reliability.Role OverviewWe are in a rapid expansion phase, enhancing our product offerings, improving platform capabilities, and increasing our delivery speed. We seek seasoned Node.js developers who can take ownership of substantial components of our architecture and deliver production-quality code that our enterprise customers rely on daily.This is not a mere augmentation role. You will collaborate closely with engineering leaders, product managers, and the CEO, ensuring your decisions impact the product significantly, your insights are valued, and your craftsmanship is evident to the customers who depend on our platform.Your ContributionsCreate high-performance backend services and APIs that drive enterprise-level SaaS applicationsDevelop scalable, secure Node.js microservices and integrations within the Salesforce ecosystemDesign modern front-end experiences with Vue.js and TypeScript tailored for demanding enterprise usersEstablish CI/CD pipeline tools, automation frameworks, and developer productivity infrastructureImplement real-time data processing and event-driven architectures for handling sensitive enterprise data on a large scale

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!

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 experiences for millions worldwide.What sets us apart is our comprehensive end-to-end process that equips us to tackle every challenge with the assurance of achieving optimal results. Our areas of expertise encompass Research, Digital Strategy, Branding, Content Creation (Written, Photos, Videos), Product Design, Web & Mobile Development, Data Analytics, and AI.Become part of our dynamic team of 120 professionals and collaborate in crafting groundbreaking products and exhilarating experiences for notable brands(such as Mercedes AMG, IKEA, KFC, eObuwie, Żabka, Sanofi, Zain) and innovative startups (like Booksy, Nethone, Telemedi, or DevSkiller)!We are in the process of building a curated network of talented freelance Backend Developers to engage for both current and future projects. When you apply to join our freelancer base, your application will be assessed and kept on file. You may not be contacted immediately, but once a project aligns with your expertise, you will receive an invitation to participate, allowing you to accept or decline based on your availability. If you're interested in joining our talent pool, please submit your CV. We will reach out as soon as a fitting opportunity becomes available.Are you a self-motivated and reliable professional? If so, we are eager to hear from you!

We are seeking a highly skilled Senior AI-Enabled Architect with over 7 years of experience to join our dynamic team at Altoros. In this pivotal role, you will analyze intricate project scopes, explore realistic optimization opportunities through AI-driven development practices utilizing a multi-agent approach, and actively contribute to technical implementation when necessary.This position encompasses two primary dimensions:Acting as a hands-on architect capable of deconstructing complex requirements, designing resilient backend architectures, and participating directly in the implementation process.Leveraging structured, practical experience in AI-first application development—creating effective workflows around LLM-based tools to enhance delivery efficiency safely.The core focus of this role is to drive project-level impact: assessing new opportunities (particularly those involving extensive integrations or high complexity), identifying secure optimization strategies, and, as required, leading or contributing to the execution of those solutions.This is a hands-on, execution-oriented technical position for someone who has effectively applied AI-first development practices in real-world production environments and possesses a solid business understanding of software development projects.

Join our dynamic team as a Senior TypeScript/Node.js Developer and contribute to a cutting-edge advertising platform designed for the Swedish market. In this role, you will leverage your extensive experience in TypeScript and Node.js to develop robust and scalable applications that enhance user engagement and drive business growth.As part of our innovative company, you’ll collaborate with cross-functional teams to deliver high-quality software solutions while utilizing the latest technologies in a supportive and creative environment.

Join Attio: Pioneering the Future of CRM in the AI EraAt Attio, we are on a transformative mission to revolutionize Customer Relationship Management (CRM) for the age of artificial intelligence. Our goal is to create the first AI-native CRM solution tailored for the most ambitious go-to-market teams. Recently, we secured a $52M Series B funding led by GV (Google Ventures), alongside support from Redpoint, Balderton, Point Nine, and 01A. Our passionate team is dedicated to overcoming complex technical challenges, delighting users, and setting new industry benchmarks.About the RoleOur Engineering team is focused on tackling the most challenging problems so our users can thrive. We build real-time infrastructure, AI-native architecture, and a seamless frontend experience, all powered by a team that operates swiftly, thinks critically, and maintains exceptionally high standards for quality.We are seeking a Senior Product Engineer who is passionate about pushing boundaries, meticulous about details, and eager to help reshape how millions of individuals work.

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 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.

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.

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.