Manual Backend Tester (Senior Level)

We are seeking a dedicated Manual Backend Tester at Altersolutions to join our innovative team in Warsaw. In this role, you will be responsible for ensuring the quality and reliability of our backend systems through meticulous testing and analysis. Your keen attention to detail and analytical skills will be crucial in identifying issues and helping to enhance our software offerings.

Conduct testing of new platform functionalities.Design test scenarios and prepare test data.Report bugs and verify their fixes in subsequent iterations.Participate in Agile sprints and collaborate with the project team.

Join altersolutions as a Senior Salesforce Manual Tester and play a crucial role in ensuring the quality of our Salesforce applications. You will be responsible for designing and executing test cases, identifying defects, and collaborating with cross-functional teams to enhance the user experience. If you have extensive experience with manual testing and a passion for Salesforce, we want to hear from you!

Join Altersolutions as a Mobile Application Manual Tester where you will be integral in ensuring the quality and functionality of our mobile applications. In this role, you will execute test cases, identify bugs, and collaborate with developers to enhance the user experience. Your attention to detail and analytical skills will help us deliver top-notch mobile solutions to our clients.

Conducting functionality testing within banking processes.Verifying system integration with other applications.Reporting bugs and ensuring their resolution in subsequent releases.Collaborating with the project team during the launch and development of a low-code platform.

Join our Investment Solutions Tribe as a Senior Manual Tester, taking the lead in ensuring the quality of our investment processes. In this role, you will be responsible for conducting comprehensive testing across frontend, backend (API), and mobile applications. Your expertise will be crucial in identifying defects and enhancing the user experience.

We are seeking a skilled Manual Tester for a project focused on the development of web applications within the financial sector. The individual in this role will be responsible for requirements analysis, test case preparation, and the execution of functional and regression tests. Additional responsibilities will include reporting and monitoring defects, as well as collaborating with the development team using agile methodologies.

Are you ready to take your career to the next level as a Manual Tester? At Altersolutions, we are looking for passionate individuals to join our dynamic team in Warsaw. In this role, you will be crucial in ensuring the quality and functionality of our software products. Your keen eye for detail and commitment to excellence will help us deliver top-tier solutions to our clients.

Join our dynamic QA team as a Manual Tester specializing in banking applications. Your focus will be on ensuring the quality of payments and SWIFT systems. We are looking for a meticulous professional with a deep understanding of financial systems, regulatory frameworks, and transaction workflows. The successful candidate will have hands-on experience in test planning, execution, and defect management. Key Responsibilities:Interpret business and functional requirements pertinent to banking and payment systems.Create and execute comprehensive manual test cases for end-to-end payment processes, including SWIFT message validation.Conduct regression, integration, and system testing across various environments.Collaborate effectively with developers, business analysts, and stakeholders to uphold quality and compliance.Utilize tools like JIRA, HP ALM, or similar to log, track, and manage defects.Verify data integrity and transaction accuracy across interconnected systems.Support User Acceptance Testing (UAT) and production validation as needed.Ensure that testing activities comply with banking standards and regulatory requirements (e.g., ISO 20022, AML, KYC).

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.

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 the forefront of online privacy!At Nord Security, we are on a mission to empower individuals with the most advanced VPN technology and innovative solutions for online safety. As a part of our talented team, you will contribute to the development of our flagship products, including Threat Protection Pro and the NordLynx protocol, ensuring they meet the highest standards of security and user experience.Your Role: As a QA Engineer, you will play a crucial role in safeguarding our users' online security, privacy, and data integrity.The QA Team: Our dedicated QA department is committed to maintaining exceptional software quality. We are a collaborative team of over 30 professionals working on interconnected projects, fostering a culture of camaraderie, creativity, and continuous improvement. We value curiosity, innovation, and teamwork.Main Responsibilities:Develop and execute manual and automated tests to validate complex functional and integration requirements.Conduct functional testing for web, desktop applications, and back-end systems based on project needs.Maintain and enhance existing test cases to ensure continued effectiveness.Identify and document software defects while collaborating with multiple development teams for resolution.Engage with product managers, developers, and fellow QA team members to ensure high-quality deliverables.Implement Agile methodologies in daily tasks to enhance efficiency.Champion product quality within cross-functional teams.Contribute to the development of testing strategies and their execution alongside the QA Guild.Facilitate a smooth release process while upholding the highest quality standards.Mentor junior team members and share your insights and innovative ideas.

TransPerfect Games stands at the forefront of customized and adaptable video game services, delivering an extensive array of solutions such as translation, functional and localization game testing, certification testing, focus group and playtesting, player support, community management, cybersecurity, penetration testing, tool development, art design, game writing, GDPR consultancy, and voice-over recording.With a portfolio boasting over 1000 esteemed global game developers and publishers, we are seeking Game Localization QA Testers with native fluency in Spanish (LATAM). Join our dynamic team to assist clients in navigating testing challenges in an exhilarating environment. You will have the opportunity to test groundbreaking games, from indie gems to AAA titles crafted by industry leaders!If you are passionate about gaming, detail-oriented, and have a knack for identifying errors in terminology, grammar, punctuation, and linguistic style in your native language; if you are eager to learn and open to constructive feedback; if you are committed to delivering high-quality, timely testing that contributes to the enhancement of our clients’ games; and if you are an enthusiastic gamer looking to turn your passion into a career in the gaming industry, we want to hear from you!

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.

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

Join TransPerfect Games, a premier provider of tailored video game services that encompasses translation, localization testing, certification, and more. Our clientele includes over 1000 renowned global game developers and publishers.We are on the lookout for Game Localization QA Testers fluent in Spanish (LATAM) who are eager to support our clients in a vibrant and dynamic setting. You will have the exciting opportunity to test a diverse range of games, from indie hits to blockbuster titles!If you are passionate about gaming, detail-oriented, and possess exceptional linguistic skills in Spanish, we want to hear from you. Your role will involve identifying and rectifying localization issues, ensuring our clients deliver top-notch gaming experiences.This is a fantastic chance to turn your gaming passion into a rewarding career!

Join our team as a Backend Engineer and contribute to our innovative solutions at NordProtect. We are looking for talented individuals with a passion for technology and a strong background in backend development, specifically using Go. In this role, you will collaborate with cross-functional teams to design, implement, and maintain robust and scalable backend systems.

TransPerfect Games is a premier provider of tailored and versatile video game services, delivering an extensive array of solutions such as translation, functional and localization game testing, certification testing, focus group and playtesting, player support and community management, cybersecurity and penetration testing, tool development, art design, game writing, GDPR consultancy, and voice-over recording.With a rich portfolio of over 1,000 renowned global game developers and publishers as clients, we are actively seeking Game Localization QA Testers who are native speakers of Spanish (EU). In this dynamic role, you will provide essential client support with testing challenges, engaging with both indie game creators and AAA titles from industry giants.If you possess a passion for gaming, a keen eye for detail, and a commitment to delivering quality, we encourage you to apply!

Join our dynamic team at TransPerfect Games as a French Localization Games Tester in Warsaw! This freelance position is your chance to combine your passion for gaming with a rewarding career in the gaming industry.As a leader in tailored video game services, TransPerfect Games delivers a comprehensive array of solutions that includes translation, functional testing, localization testing, certification, focus group testing, player support, cybersecurity, tool development, art design, game writing, GDPR consultancy, and voice-over recording.We collaborate with over 1,000 renowned global game developers and publishers. We are seeking skilled Game Localization QA Testers fluent in French to assist our clients in addressing localization challenges. You will be testing everything from indie hits to AAA titles!If you have:A genuine enthusiasm for gaming;An eye for detail;Excellent proficiency in identifying errors in terminology, grammar, punctuation, and linguistic style in French;A willingness to learn and accept constructive feedback;The ability to provide high-quality, timely testing to enhance our clients' games;A commitment to excellence and a desire to contribute to the gaming industry;We invite you to turn your gaming passion into a profession. This is your opportunity to embark on a new career path in the exciting world of gaming!Important Details:This is a mandate contract position.You must have the right to work in Warsaw and provide necessary documentation. Candidates must be Polish citizens, EU citizens, permanent residents, or hold a valid work permit/Visa.This is an onsite role requiring presence in our Warsaw office during core business hours (Monday to Friday, 8 hours per day).

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.