Mobile App QA Engineer (m/f/d)

🏢 Summary: Senior Machine Learning Engineer role focused on building and deploying data-driven solutions for personalization, campaign ranking, and recommender systems in a large-scale e-commerce platform. The position involves end-to-end ownership of ML lifecycle, including data quality, feature engineering, model validation, deployment, and pipeline maintenance in a modern, agile environment. The role directly impacts business-critical logic behind flash sales and customer engagement models. 🗂️ Requirements: 3-5+ years of experience building, training, validating and deploying ML solutions in production, Proficiency in Python programming, Strong knowledge of SQL, Experience with Git, Experience with decision trees, neural networks and regression models, Ability to scale ML solutions to infrastructure and business needs, Understanding of data lake or lakehouse architecture, English proficiency at C1 level 📃 Skills: Python, SQL, Git, MachineLearning, DecisionTrees, NeuralNetworks, Regression, DataLake, Lakehouse, PySpark, Databricks, Scala, StructuredStreaming, MLflow, NLP, RecommenderSystems 🏢 Description: limango is a European platform focused on curated value shopping for families. As part of the OTTO Group - one of Europe’s leading e-commerce players - we connect families with inspiring brands, great deals, and products they truly love. Our ambition is to strengthen our position as one of Europe’s leading discount e-commerce players for families and beyond. Today, limango operates across Germany, Poland Austria, and the Netherlands, offering one of the largest selections for the whole family: from fashion and accessories to toys, outdoor, cosmetics, home and travel offers. Behind the platform is a team that values a good atmosphere, trust, collaboration, flexibility and real impact.  We foster a hybrid-first culture in Munich and Wrocław (2 days in the office), while staying open to remote talent who value the same way of working. JOIN THE LIMANGO IT! Join the limango IT and Product Development team! In the limango IT and Product development you get the chance to contribute your own ideas and know-how to maintain and develop our highly frequented, self built online shop for our markets in Poland, Germany, Austria and the Netherlands. Together with our experienced and international development teams you will bring our shop sites to the next level. As a Senior Machine Learning Engineer in our Machine Learning Shop team, you will own the business-critical logic behind our campaign-based flash sale model. Your work will directly impact how we rank campaigns based on customer interests and category affinities, optimize our product recommender systems, and prevent churn through smart communication models. You will work within a modern tech stack world in a well-rehearsed, agile environment alongside dedicated Product Owners, Data Engineers, and Web Developers. YOUR MAIN TASKS AND WHAT WE EXPECT Building and deploying data-driven and machine learning solutions for portal personalization and campaign ranking. Taking care of the whole machine learning process – verifying data quality, choosing optimal algorithms, feature engineering, model validation with correct metrics, and interpretability. Monitoring, maintaining, scaling, and updating existing data / ML pipelines. Building solutions following best software practices – clean code, testing, and automatic deployments. Working closely with data engineers, data scientists, and development teams in building our whole ML / data-driven infrastructure – reliable data pipelines and shared, clean data sources. Explaining and recommending optimal data-driven / ML solutions to both business stakeholders and developer teams. Sharing and improving ML / MLOps knowledge within the organization. WHAT WE EXPECT 3-5+ years of professional experience building, training, validating, and deploying ML solutions in production environments. Very good knowledge of Python programming, SQL, and Git. Experience in training and validating ML solutions (decision trees, neural nets, regression models). Ability to scale solutions according to infrastructure or business requirements. Good understanding of data lake / lakehouse architecture. Good knowledge of English (C1) (work in an international environment). Nice to have: Professional experience with recommender systems and NLP. Previous experience in ecommerce data ecosystems. Professional experience with PySpark programming and the Databricks Lakehouse platform ecosystem. Experience in structured streaming and Scala programming. Familiarity with MLOps environments such as mlflow. WHAT WE OFFER & WHAT YOU CAN EXPECT Hybrid or remote work model Enjoy the flexibility to work either in a hybrid model -with 2 days per week in our Wrocław office (you choose the days) if you’re based locally - or fully remotely from anywhere in Poland. Flexible start to your day Flexible start times let you plan your working day in a way that fits your schedule. Real benefits you’ll actually use Enjoy our products your way, for yourself or your loved ones. Plus, a wellbeing platform with access to health programs, webinars and challenges, as well as private medical care (Lux Med) for you and your family and a Multisport card. Office vibes we enjoy A treadmill under a desk, ping-pong table, popcorn machine, Xbox console or a quick break on a massage mat - small things that make your day better. You’re also welcome to bring your child or pet to the office - we genuinely love having them around 😊 Learning & development Access to language learning (English, German, Polish) via an app, along with a wide range of courses, podcasts and learning tools. You’ll also grow through international projects, collaboration and opportunities for occasional business trips that give you exposure to different teams and perspectives. Eco in action From Brita water dispensers instead of plastic bottles to eco-friendly document disposal - we focus on everyday habits that make a real difference. We’ve even planted our own Limango tree to support green spaces in Wrocław. Activities and Events From sports events to team gatherings, company wide events or casual afterwork events in our office - we like to stay active, spend time together and keep things social, in a natural and easy-going way. We look forward to receiving your application and can't wait to get to know you. Apply now! :)

🏢 Summary: The offer is for a Product Owner responsible for defining and prioritizing the mobile app (Android and iOS) roadmap in an international e-commerce environment. The role focuses on managing the product backlog, aligning stakeholders, and delivering high-quality mobile features in an agile, cloud-based, service-oriented architecture. You will work closely with cross-functional teams to drive continuous releases and integrate AI workflows into daily operations. 🗂️ Requirements: Few years of experience as Product Owner in mobile app projects, Experience in software development teams, Strong knowledge of Agile methodologies, Experience with Android and iOS app products, Ability to manage and prioritize product backlog, Ability to analyze data and user feedback, Experience in stakeholder management, Understanding of AI workflow integration, Experience with continuous release cycles, Fluency in collaboration with cross-functional teams 📃 Skills: Agile, Android, iOS, AI, Scrum, Kanban, Mobile, Cloud, SOA, APIs 🏢 Description: At limango, we’ve been shaping the world of e-commerce for over 18 years. Together with our platforms in the Netherlands, Germany, and Austria, we are proud to be part of the OTTO Group, one of Europe’s leading e-commerce players. We offer the largest selection of products for the entire family, making us a go-to shopping destination for millions of customers across Europe. But limango is more than just a platform, it's a community. We believe in working and growing together, valuing a healthy work-life balance and fostering a culture built on respect, trust, and equality. If these values resonate with you, there’s a good chance you’ll feel right at home with us. We foster a culture built around hybrid work in Wrocław (2 days in the office), while staying open to remote talent who value collaboration and real impact. Join the limango IT! At Limango IT, you’ll have the chance to apply your ideas and expertise to improve customer service and order management for the German, Polish, and Dutch markets. You’ll work with a modern technology stack, including cloud-based solutions, service-oriented architecture, and event-driven communication. Additionally, you’ll join an established international agile team comprising experienced developers, a dedicated Product Owner, and a QA engineer. We are looking for a Product Owner who will be responsible for defining and prioritizing our mobile app on Android and iOS. The ideal candidate must be able to work collaboratively with the development team, stakeholders, and customers to create and maintain a product roadmap that aligns with the company's vision and goals. Key Responsibilities: Define the product vision, roadmap, and strategy for the app team. Develop a deep understanding of the customer needs and behaviors, and work closely with the development team to deliver high-quality features that meet those needs. Prioritize and manage the product backlog based on data and user feedback, ensuring that the most valuable and high-impact features are being delivered first. Collaborate with cross-functional teams including design, engineering, QA, and product management to ensure that features are delivered on time and to the required quality. Conduct user research and analysis to identify new opportunities and improve the product's usability, accessibility, and user experience. Continuously monitor the market, competitors, and industry trends to ensure that the product remains competitive and innovative. Managing expectations and stakeholders effectively. Managing a continuous release cycle for iOS & Android and ensuring a good placement in the relevant app stores. You'll need: Minimum of few years of experience as a Product Owner or similar role in a software development team with a strong focus on mobile apps . Strong understanding of Agile development methodologies and principles. Integration of AI workflows into the daily operations to make work more effective Excellent communication, interpersonal, and stakeholder management skills. Ability to analyze and synthesize data to make informed decisions. Strong organizational skills and attention to detail. Ability to work collaboratively in a team environment and independently. Passion for mobile app development and emerging technologies. Bachelor's degree in Computer Science, Engineering, or a related field is a plus. What We Offer & What You Can Expect Challenging tasks and real impact, you’ll be directly involved in bringing new projects to life and influencing how we grow as a e-commerce business. Fast-paced learning environment, we’re an international team, so you’ll constantly pick up new skills and insights. Flexible working hours and B2B contract, choose when and how you work. Lots of room to grow, through hands-on experience, training, and working with experts from different parts of the world. Benefits Hybrid working model for people from Wrocław, remote working for people from other locations. Private healthcare, we provide access to the best specialists for you and your loved ones through Luxmed. Language classes, join English, German, and Polish lessons in small groups, tailored to your current skill level. Multisport card, stay active and healthy with a Multisport card giving you access to numerous fitness clubs and sports facilities. Team events with great people, we love spending time together after hours,whether it’s fun office meetups or organized outings. We look forward to receiving your complete application, including a letter of motivation, references/ certificates, salary expectations and your earliest possible start date. We can't wait to get to know you. Apply now! Please kindly include in any and all job postings we publish for Limango Polska Sp. z o.o. the following information, in the language of the job posting. At Limango Polska Sp. z o.o. the remuneration regulation have been adopted, providing for the possibility of obtaining an additional jubilee award and use (under certain conditions) of certain benefits (a sport card, medical insurance, life insurance). The remuneration is paid in arrears, on the last day of the calendar month.  Any other part of the employee's remuneration is determined by the employment contract.

🏢 Summary: Engineering leadership role responsible for managing and mentoring a team of engineers, overseeing project delivery, and driving engineering strategy in an e-commerce environment. The position focuses on ensuring high-quality, timely execution of technical initiatives while improving development processes and aligning with business goals. 🗂️ Requirements: Minimum 8 years of experience in engineering, At least 3 years of experience managing engineering teams, Proficiency in GoLang, Java, Scala, JavaScript or PHP, Experience with ReactJS and/or GoLang, Strong project management skills, Understanding of SLO and SLI concepts, Experience with development metrics, Strong English communication skills 📃 Skills: GoLang, Java, Scala, JavaScript, PHP, ReactJS, SLO, SLI, DX, ProjectManagement 🏢 Description: We are an e-commerce platform in Poland and a network of travel agencies offering a wide range of travel products. We are part of Wirtualna Polska Holding – Poland’s largest group of media and e-commerce companies. Alongside Wakacje.pl and the Invia brands, we scale our impact across the CEE market, driven by a shared #TravelMindset. In our daily work, we #Explore better ways to grow, #Engage through real ownership and teamwork, and #Enjoy building experiences that people genuinely look forward to. Send us your CV and… see you at Travelplanet.pl ! ✈️ Your responsibilities Lead and mentor a team of engineers, fostering a collaborative and innovative work environment. Oversee the planning, execution, and delivery of engineering projects. Develop and implement engineering strategies aligned with company goals. Ensure projects are completed on time, within scope, and within budget. Collaborate with cross-functional teams to define project requirements and deliverables. Continuously improve engineering processes and workflows. Provide technical guidance and support to team members. Conduct performance evaluations and support the professional development of team members. Our requirements Minimum 8 years of experience in the engineering industry. At least 3 years of experience in a leadership role, managing engineering teams. Proficiency in one of the following programming languages: GoLang, Java, Scala, JavaScript or PHP. Experience with ReactJS and/ or GoLang is as big plus. Can-do attitude with a proactive and solution-oriented approach. Excellent project management skills, with the ability to handle multiple topics simultaneously. Understanding of developer experience (DX) and familiarity with concepts such as SLO (Service Level Objectives) and SLI (Service Level Indicators). Experience with metrics used by development teams. Strong command of English, both written and spoken, to ensure effective communication with international teams. Strong desire for continuous learning and development. Excellent communication and interpersonal skills. Strong problem-solving skills and ability to work effectively under pressure. Our offer Competitive Salary :  commensurate with skills and experience Paid time off : is included in the service fee Flexible Working Hours : Our core hours are 9 AM to 3 PM Hybrid Work Model: Work 2 days in the office and 3 days from home Health and Wellness: Shared costs for sports activities and private medical care Professional Development: Shared costs for training and courses Life Insurance : Comprehensive coverage for peace of mind Employee Discounts: Access to corporate products and services at discounted prices If the above sounds like an interesting opportunity we would be more than happy to hear from you! Please send your resume in English.

🏢 Summary: Product Owner role in a mobile-focused IT team responsible for defining and managing customer-centric mobile applications and digital portals used by millions of users. The position involves backlog ownership, roadmap management, and close collaboration with development, architecture, and business stakeholders to deliver scalable, high-quality solutions. The role emphasizes Agile delivery, technical alignment, and continuous product improvement. 🗂️ Requirements: 6+ years experience as Product Owner or Product Manager, Fluency in Polish, Fluency in English, Strong knowledge of Agile methodologies, Experience with Scrum and Kanban, Experience managing digital product backlogs, Ability to define epics, user stories, DoD and DoR, Experience in release management, Broad IT knowledge (Computer Science degree or equivalent), Experience working with mobile applications, Stakeholder and dependency management skills 📃 Skills: Agile, Scrum, Kanban, JIRA, Confluence, Miro, Mobile, KPIs, Backlog, Roadmap, MSOffice, MSTeams, SharePoint 🏢 Description: Are you passionate about shaping mobile experiences and ready to grow your career as a Product Owner in a dedicated mobile team? Join our international, diverse environment where you’ll drive the development of customer-centric mobile applications that are always at hand, fast, and intuitive to use. You will be assigned to team Customer Portals IT, building and evolving solutions used by over 3 million customers, including B2C and B2B mobile apps, the renewed client's Customer Portal and websites. How you will get the job done creating IT product definitions in a way that the products can be flexible by adjusting to changing business needs and possibly reuse them in the future managing digital product backlogs, mapping epics into stories in a 'clean' and understandable way, including DoD and DoR, according to business values, architectural decisions considering potential technical debts or regulatory requirements ensuring the Product Backlog is visible, transparent, and clear to all and shows what the Scrum Team will work on next actively and regularly communicating with businesses about current work and plans maintaining the product roadmap through collaboration with business - considering and influencing external dependencies – teams and vendors cooperating with the Project Manager and Architect to deliver complex solutions built out of multiple products working as a digital Product Owner for IT solutions, prioritizing changes for the development team co-planning and contributing to the release management process keeping the Mobile apps up and running to ensure current speed, performance and legal, security and functionality points of view organizing product backlog and delivery needed and communicating with respective parties analyzing the incidents with QA help prioritizing technical debt after consultations with the Architect, Engineering Lead and team identifying the future potential of your products and getting your teams, customers, and business network excited about it preparing required product documentation, correspondence, and presentations observing KPIs of your products, and informing the team about resulting business value tools we use daily: JIRA, Confluence, Miro, MS Office, MS Teams and SharePoint Skills and experience you will need fluency in Polish and English 6+ years of experience in the role of Product Owner or Product Manager proactive mindset, project management skills and ability to manage multiple tasks effectively excellent communication skills and ability to engage, influence, and inspire stakeholders to drive collaboration and alignment good organization skills ability to manage bigger and new but also smaller and legacy products or functionalities ability to adapt to changing circumstances and embrace change with a positive attitude knowledge and understanding of Agile methodologies (especially SCRUM and Kanban) flexible approach to lead and support the team and product lifecycle stakeholder and dependencies management skills broad knowledge of IT, either from a Computer Science degree or self-study Nice to have good German – B2 at least – (We work for the German market) experience in end-to-end project delivery experience with mobile-first approach What we offer: The opportunity to participate in a variety of projects. Multisport Plus card. Private medical care (LUX MED). Group insurance. Access to comprehensive psychological support, individual sessions with coaches and psychodietitians, as well as inspiring webinars. Remote work from any location, or a hybrid model using our offices located in Poznań. A home office package to increase remote work comfort (chair, additional monitor, ergonomic mouse, etc.). Modern offices equipped with amenities such as a pool table, foosball, darts, and relaxation zones. Opportunities to spend time together after work - combining our employees’ passions through ski trips, cycling tours, and sailing adventures. Regular company-wide and team-based integration events, as well as many other occasions to meet and exchange ideas with colleagues. Celebrations of important moments in the lives of our employees An open approach to new ideas and initiatives, including charity actions.

🏢 Summary: Long-term B2B opportunity for a Senior Java Developer to modernize and develop a large-scale CRM platform, focusing on migrating a legacy JBoss monolith to a Spring Boot-based domain-driven architecture. The role involves backend development, system modernization, database migration, and collaboration within cross-functional teams. Work is delivered in a hybrid model within an established development department. 🗂️ Requirements: Commercial experience with Java 21+, Experience with REST API development, Strong knowledge of Spring and Spring Boot, Experience with unit and integration testing (Mockito, Testcontainers, JUnit 5), Proficiency with Git, Experience using Swagger, Ability to work with IntelliJ, Experience with JBoss or JEE5, Knowledge of SQL (Postgres or Sybase), English level B2/C1 📃 Skills: Java, REST, Spring, SpringBoot, JUnit, Mockito, Testcontainers, Git, Swagger, IntelliJ, JBoss, JEE, SQL, Postgres, Sybase, React, Kubernetes, Jenkins, JBPM, Swing, JavaFX 🏢 Description: Client: A leading German telecommunications and IT corporation Start date: ASAP Locations: Warszawa, Poznań, Lublin Work model: hybrid with 3 days/week from the office Engagement: Long-term Form of cooperation: B2B, full-time Working hours: Standard business hours About our client: A leading German telecommunications and IT corporation, recognized for innovative solutions in cloud computing, web hosting, and internet services, is expanding its European Technology Center in Poland. The company is building strong development teams in Warsaw, Poznan, and Lublin to support its long-term digital transformation initiatives. About the project & team: You will join an established development team consisting of three experienced Java developers and one test manager. This team is part of a larger department that includes over 20 developers across several cross‑functional teams. The department is responsible for the company’s core CRM platform, which includes multiple frontends (Java Swing, JavaFX, React) and numerous backend services built in technologies such as JBoss 4/7, WildFly 10, Spring Boot, and Spring Batch. The primary focus of your future team is the modernization of the CRM system, including the migration of business logic from a legacy monolithic JBoss 4 application to a modern, domain‑driven architecture using Spring Boot. Future development includes building new React-based frontends, enhancing backend services, and modernizing database layers (e.g., Sybase migrations). You will work within a stable, collaborative setup, contributing to high-impact solutions used across the organization. Must‑have skills: Java >21 REST Spring / Spring Boot Unit- and Integrations-Tests (Mockito, Testcontainers, JUnit 5) Git Swagger IntelliJ Nice to have skills: Kubernetes JEE5 (JBOSS) SQL (Optimal: Postgres, Sybase) Java Swing or JavaFX JBPM Jenkins (CI/CD) English Level: B2/C1 Responsibilities: Develop and maintain backend services within a large CRM platform. Migrate business logic from a monolithic JBoss 4 system to Spring Boot microservices. Participate in building new frontends (React) and extending backend functionalities. Contribute to database modernization, including migration of Sybase logic. Collaborate closely with developers and the team’s test manager. Ensure high code quality through unit and integration testing. Use best practices in CI/CD, version control, and modern development standards. What We Offer: Competitive compensation: up to 120 PLN/h netto on a B2B contract Flexible settlements: Payments issued in your preferred form Fast invoicing: Short 14‑day payment terms Comprehensive healthcare: Extended private medical care package My Benefit platform: Access to a cafeteria system including Multisport cards and prepaid vouchers (e.g., IKEA, Zalando, Notino, and more)

🏢 Summary: Backend Software Engineer role focused on developing and optimizing Product Catalog solutions, particularly duplicate detection and product grouping at scale. The position involves designing and maintaining backend services and architectures in a cloud-based, microservices environment using Kotlin and JVM technologies. You will work on high-scale systems, contributing to core platform components and automation. 🗂️ Requirements: Commercial experience in Kotlin development, Strong knowledge of backend architectural patterns, Experience designing and maintaining backend services and APIs, Ability to design software architectures, Experience with debugging and resolving software defects, Fluent Polish (C1), English proficiency (B2), Experience working with distributed systems at scale 📃 Skills: Kotlin, JVM, Kubernetes, Docker, Consul, GitHub, GitHubActions, Microservices, APIs, Cloud, Hermes, ServiceMesh 🏢 Description: About the job In this role, you will be a key player in evolving our Product Catalog - the foundational pillar of our platform. Your primary objective will be to build and optimize solutions for duplicate detection and accurate product grouping across a broad portfolio of system components. Your work will directly shape the daily experience of our users. You will ensure Buyers enjoy a high-quality, clutter-free shopping experience, while helping Partners list their products more efficiently. Expect to tackle exciting technical challenges at scale, working with a diverse tech stack that includes online JVM services and offline processing in a public-cloud environment. Important things for you: Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): PLN gross 14 600 - 20 825 Annual bonus based on your annual performance and company results. Our team is based in Toruń. What You'll Do: Design, develop, test and maintain high-quality code for backend services, APIs and automation scripts. Debug and resolve software defects and issues. Design and develop new project architectures while proposing better architectural approaches for existing solutions. Share knowledge with team members and support junior engineers. Collaborate with product managers, data analysts, UX designers and fellow engineers to gather and refine requirements. Support on-call engineers by participating in the Software Engineer role on-call rotation. Write clean, efficient  and well-documented code. We are looking for someone who has: Solid commercial experience in Kotlin development and a strong command of backend architectural patterns. Language proficiency in Polish at a C1 level and English at a B2 level. Excellent problem-solving and decision-making skills, paired with a Data-Driven mindset. High learning agility, adaptability to change, flexibility  and strong skills in communication and cooperation. What's in it for you: Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for related to the specific nature of your job. A training budget, inter-team tourism (see more here), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy. And that's just the beginning! You can read more about the benefits here. #goodtobehere means that: You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA. You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create. You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job. You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support). You will create solutions that will be used (and loved!) by your friends, family and millions of our customers. You will meet the Allegro Scale, which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning. You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about! Send us your CV and… see you at Allegro!

🏢 Summary: Full-stack developer role on a high-impact e-commerce platform built on nopCommerce for the insurance sector, operating in a cloud environment with Kubernetes and Azure. The position focuses on building and enhancing scalable backend and frontend features using ASP.NET Core, C#, Angular, and PostgreSQL, as well as integrating external services via REST APIs. You will collaborate with an international team and contribute to core platform functionality in a modern cloud-based setup. 🗂️ Requirements: Experience with or strong willingness to learn ASP.NET Core, Experience with or strong willingness to learn Angular, Experience with or strong willingness to learn PostgreSQL, Knowledge of C#, Familiarity with REST API integrations, Interest in e-commerce development, English proficiency for daily communication 📃 Skills: ASP.NET, Angular, PostgreSQL, C#, REST, nopCommerce, Kubernetes, Azure 🏢 Description: About us At QualityMinds, we specialize in software quality assurance, development, and DevOps services. With an experienced team, we deliver innovative solutions, working with both large and medium-sized companies. Our portfolio includes test automation, performance testing, development services, and DevOps support. We are actively involved in the tech community, organizing lectures and training sessions. The Polish branch consists of a team of around 60 specialists working on domestic and international projects. Our greatest strength and value are our people. For us, work is about partnership and trust. We believe that a supportive environment and a sense of ownership lead to better outcomes. About the role You will join a high-impact project delivered for a well-established organization in the insurance sector, focused on developing and enhancing a robust e-commerce platform built on nopCommerce. The solution supports a large and active user base and operates within a modern cloud environment powered by Kubernetes and Azure. While the infrastructure is already in place, your primary focus will be on building scalable, high-quality application features. In this role, you will work across the full technology stack, contributing to both backend and frontend development using ASP.NET Core, C#, Angular, and PostgreSQL. You’ll play a key role in extending core platform functionalities, implementing new features, and ensuring seamless integrations with external services via REST APIs, including payment processing and compliance tools. You will collaborate closely with an international team and communicate directly with the client in English, gaining exposure to business needs and real-world product decisions. The role offers a strong sense of ownership — you’ll be encouraged to take initiative, propose improvements, and actively shape the product while continuously developing your technical skills in a supportive and growth-oriented environment. Requirements Experience with - or a strong willingness to learn - ASP.NET Core, Angular, and PostgreSQL Knowledge of C# will be considered an advantage Interest in e-commerce development, ideally with exposure to or curiosity about the nopCommerce ecosystem Familiarity with REST API integrations (e.g., payment or compliance services) or a strong motivation to develop in this area Proactive attitude and ownership mindset - you’re curious, eager to grow, and comfortable taking responsibility for your work Good command of English, enabling effective day-to-day communication within the team and with the client We offer Fully remotely or in-house work at our office in Warsaw Contract of employment or B2B contract Flexible working schedule Medical care (LuxMed or PZU Zdrowie) MyBenefit or Pyszne.pl Self-development opportunities Internal & external trainings Certification opportunities English/German conversations with native speakers International teams and projects Choice of working environment (Mac/Linux/Windows) We are excited to meet passionate technology enthusiasts ready to drive meaningful change. If you see yourself thriving in this role, we encourage you to apply through our application form and become part of our team at QualityMinds !

🏢 Summary: The offer is for an Android Developer responsible for building and testing native Android applications within an IoT ecosystem, focusing on BLE-based communication with home appliances. The role involves full lifecycle development in a Scrum team, ensuring high-quality architecture, testing, and hardware-software integration. It combines mobile development with low-level protocol work and real-device validation in a lab environment. 🗂️ Requirements: Minimum 3 years of experience in native Android development, Commercial experience with Kotlin, Experience with Bluetooth Low Energy (BLE), Understanding of mobile-to-hardware communication, Knowledge of HTTP, REST, JSON, XML, WebSockets, Familiarity with Clean Architecture and SOLID principles, Experience with Git, Experience with Jira, Experience with GitHub Actions, English level B2/C1, Residence in Poland or eligibility to work in Poland 📃 Skills: Android, Kotlin, BLE, HTTP, REST, JSON, XML, WebSockets, Git, Jira, GitHub, NDK, KMM, SSL, TLS, Coroutines, Flows, Jetpack, Compose 🏢 Description: We are part of an international organization listed on Nasdaq Stockholm, operating in 11 countries. In Poland, we work with full autonomy. We independently choose our technologies, processes, and ways of working while maintaining the highest professional standards. We deliver a wide range of IT projects in Poland and internationally, across multiple domains and technologies. This allows our consultants to develop their competencies and gain experience aligned with their professional ambitions. Our collaboration is built around the CARE philosophy. For us, it means responsible project matching, transparent cooperation, and a long-term approach to professional growth. Join us as Android Developer. Grow in an environment that cares about your development as much as you do. Your responsibilities Native App Development: Design and develop high-quality native Android applications within the IoT ecosystem. IoT Integration & Testing: Actively test and implement seamless connectivity between mobile applications and home appliances, focusing on pairing and communication stability. Protocol Implementation: Work closely with low-level communication protocols, specifically Bluetooth Low Energy (BLE) , to ensure reliable hardware-software interaction. Quality Assurance: Conduct integration and end-to-end testing, utilizing tools for automated Unit and UI testing to maintain high performance in a complex, distributed system. Agile Collaboration: Participate in the full software development lifecycle within a cross-functional Scrum team, contributing to clean architecture and codebase modularization. Lab-Based Development: Utilize the onsite hardware laboratory to validate features on physical appliances that cannot be fully simulated. Requirements Professional Experience: At least 3 years of experience in native Android development. Technical Expertise: Experience with Kotlin. IoT Knowledge: Experience with Bluetooth Low Energy (BLE) and a solid understanding of how mobile devices interface with external hardware. Web Technologies: Proficiency in web-related standards including HTTP, REST, JSON, XML, and WebSockets. Architecture & Engineering: Familiarity with Clean Architecture, SOLID principles, and codebase modularization; experience with Git, Jira, and GitHub Actions. English: at least B2/C1 level Nice to have: Experience with Android NDK and Kotlin Multiplatform Mobile (KMM). Knowledge of cybersecurity practices (SSL/TLS, certificate pinning). Experience with Kotlin Coroutines and Flows for reactive programming. Familiarity with Android Jetpack Libraries and Jetpack Compose. You need to live in Poland and/or be eligible to work here. What we offer Work in a Scandinavian culture built on logic and dialogue. Health and sports benefits tailored to your needs. Speed Coaching – short sessions that provide new perspectives and solutions. Sports training, an internal team, and opportunities to take part in competitions. Team events and development-focused meetups.

🏢 Summary: Product Manager role responsible for defining and executing the growth strategy for the search engine domain on Allegro.pl, overseeing end-to-end product development. The position focuses on building and enhancing search-related products using data-driven decisions and close collaboration with Agile, cross-functional teams. The goal is to deliver scalable, user-centric search solutions for millions of users. 🗂️ Requirements: Experience in product management or project leadership in e-commerce, Experience with search engine mechanisms, Ability to define and execute product strategy, Experience with end-to-end product development, Data-driven decision making based on analysis and research, Experience working in Agile cross-functional teams, English proficiency at minimum B2 level 📃 Skills: Agile, Search, Ecommerce, Analytics, UX, Kubernetes, Docker, Consul, GitHub, GitHubActions, Microservices, MachineLearning, AI, English 🏢 Description: Your main responsibilities: Develop the product growth strategy for the search engine domain on Allegro.pl . Define key strategic directions, while planning and monitoring the end-to-end product development process. Actively participate in defining new products and functional enhancements for existing features. Collaborate with cross-functional Agile teams, including developers, researchers, data analysts, and UX specialists. Identify internal stakeholders for your products and gain a deep understanding of their needs. This is the right job for you if you: Have experience in product management or project team leadership within the e-commerce sector. Are eager to take on the challenge of building the best search engine for millions of users in Poland. Value pragmatism and software development best practices. Can view the product through the eyes of the users. Base your actions on data analysis and research. Have experience with search engine mechanisms (this will be a distinct advantage). Are fluent in English (at a minimum B2 level). What we offer: Flexible working hours in the hybrid model (4/1) - our hours can start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. Long term discretionary incentive plan based on Allegro.eu shares (restricted stock units). Annual bonus based on your annual performance and company results. Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for related to the specific nature of your job. A training budget, inter-team tourism (more here), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy. And that's just the beginning! You can read more about the benefits here. #goodtobehere means that: You will join a team you can count on - we work with top-class specialists who have sharing knowledge and experience in their DNA. You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create. You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job. You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support). You will create solutions that will be used (and loved!) by your friends, family and millions of our customers. You will meet the Allegro Scale, which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning. You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about! Send us your CV and… see you at Allegro!

🏢 Summary: 6-month full-time Graduate Program focused on backend development for modern web and e-commerce platforms. Participants gain hands-on experience building scalable backend applications, APIs, and AI-enabled features using contemporary technologies under senior developer guidance. The program includes practical work with databases, cloud environments, and collaborative product teams. 🗂️ Requirements: Solid understanding of backend development fundamentals, Basic knowledge of object-oriented programming, Hands-on experience or exposure to .NET, Java or Node.js, Understanding of REST API design and server-client communication, Basic knowledge of SQL databases, Basic knowledge of NoSQL databases, Familiarity with Git, Basic understanding of cloud concepts (deployments, environments, scalability), Ability to use AI tools for code generation, refactoring and debugging, Very good English (B2 or higher) 📃 Skills: .NET, Java, Node.js, TypeScript, REST, SQL, NoSQL, Git, Cloud, AI, OOP 🏢 Description: At Columbus , we don’t just implement technology - we give it a human dimension. As a global consultancy, we help organizations create real business value through digital transformation. In Poland, our Digital Commerce team designs and builds modern e-commerce platforms for our Scandinavian customers, providing the technology capabilities and engineering excellence. Location: Wrocław (4 days per week at the office) Start Date: July 2026 (6-month program, full-time) What You'll learn with us This is more than a junior role - it’s a 6-month structured Graduate Program designed to give you real skills and experience in IT. Under the guidance of experienced developers, you will learn how to: Build backend applications for modern web and e-commerce platforms (.NET, Java, Typescript or Node.js) Design and develop REST APIs and handle server-client communication Work with databases (SQL and NoSQL) and understand data modelling basics Build secure, scalable, and performant backend solutions Develop AI-enabled features and use AI tools to improve development workflow Collaborate with frontend developers, QA, product managers, and AI specialists Gain practical knowledge of cloud platforms, deployments, and environments What we’re looking for Solid understanding of backend development fundamentals , regardless of formal education background. Basic knowledge of object-oriented programming concepts and good engineering practices General knowledge of backend technologies , with hands-on experience or learning exposure to at least one of the following ecosystems: .NET, Java or Node.js Openness to working with various backend technologies and readiness to quickly learn and adapt to new languages, frameworks, and tools based on project and team needs. Understanding of API design and server-client communication (REST). Basic knowledge of SQL databases (e.g. relational concepts, queries, transactions) and NoSQL databases (e.g. document or key-value stores, use cases) Familiarity with Git Basic awareness of cloud concepts , such as deployments, environments, configuration, and scalability. Ability to use AI tools to support backend development (e.g. code generation, refactoring, debugging, log analysis). Engineering mindset with strong problem-solving and analytical skills . Very good English communication skills (at least B2 level). Curiosity, passion for technology , and a strong motivation for continuous learning. What's in it for You First and foremost - you’ll build, learn, ask, try, fail, improve - and actually grow with us. Additionally, we offer: Competitive compensation from day one: 8 000 – 10 000 PLN gross/month (Employment Contract). Practical e-commerce experience with AI-driven development. Participation in Columbus global accelerator network: you'll join online training sessions and a 3-day trip to our HQ in Ballerup, Denmark to meet other accelerators from around the world! 2 500 PLN for personal development budget Great benefits package, including the MyBenefit platform (e.g., Multisport, cinema tickets, vouchers), Luxmed, and life insurance. Opportunity to participate in company events, weekly team lunches, and fun team-building activities. We believe great teams are built by people with different perspectives and experiences. If you have a solid foundation and motivation to learn, we encourage you to apply!