Senior Frontend Developer

🏢 Summary: B2B contract role for a Senior Project Manager with a strong technical background to lead complex eCommerce projects using Agile methodologies. The position focuses on delivering re-platforming and software development initiatives on time and within budget while managing multiple workstreams and stakeholders. The role requires ownership of scope, release processes, and financial control within a retail eCommerce environment. 🗂️ Requirements: Proven experience in software development project management, Experience managing eCommerce projects in retail environment, Experience delivering re-platforming projects and cutover processes, Strong knowledge of SDLC and release management, Proven scope control in project delivery, Experience managing multiple workstreams and interdependencies, Strong Agile delivery knowledge, Experience managing project budgets and financial reporting, Relevant Project Management qualification, Fluent English communication skills 📃 Skills: Agile, Scrum, SDLC, Release, eCommerce, Retail, Replatforming, Budgeting, Reporting, StakeholderManagement, ProjectManagement 🏢 Description: Senior Project Manager with a technical background required to join our eCommerce Team on a contract basis. An experienced Project Manager who leads teams to deliver high quality, complex projects on budget and within a specified timeframe to achieve the potential benefits defined in the business case. You will work closely with the Programme Manager/Account Director to achieve productivity goals and contribute to the organisation’s overall success. Please note that this job is a B2B contract position located in Poland. Please send us your CV in English. What you’ll be doing Effectively run complex projects using Agile methodologies Support the efficient flow of work by providing solutions to issues and blockers Produce accurate status reporting regarding project milestones, deliverables, risks, and issues communicating to various audiences including key stakeholders and sponsors Manage several workstreams successfully, ensuring the teams understand what is expected of them in terms of output and quality Manage the interdependencies between the various workstreams Inspire and lead teams with little Agile experience, suggesting process and practical improvements as appropriate Motivate teams to achieve individual and team objectives, to deliver high quality outputs within agreed timeframes Focus on improving delivery processes Provide support to Junior Project Managers within your account Review and update the project resource plan on a regular basis, keeping tight control of project budgets Foster close relationships with senior management and business stakeholders, be seen as a credible, reliable expert Develop customer confidence by understanding their needs and delivering first class solutions Set and manage client expectations, including resolving client escalations with diplomacy Chair meetings/reviews with multiple stakeholder requirements Keep up to date with emerging industry practices What we want from you Proven software development Project Management experience, eCommerce experience ideally within a retail environment Proven experience managing re-platforming Projects and owning the cutover process Proven experience of scope control within project delivery Proven experience working on eCommerce platform projects, delivering change to external stakeholders A good understanding of the software development lifecycle and release management Ability to define, manage and deliver to customer expectations within strict deadlines Ability to deal with ambiguity, embrace and react to change with enthusiasm and critical thinking Experience of leading and managing teams at different stages of the team’s lifecycle Experience of modern software development practices Strong understanding of agile delivery techniques and lean ways of working Experience of managing people and financial budgets (including project budgeting, monitoring financials, reporting etc) Solid time management & organisational skills Excellent negotiation skills and an ability to handle sensitive issues with tact and diplomacy Relevant Project Management qualifications Excellent verbal and written communication skills in English

🏢 Summary: Senior Software Engineer role focused on building and maintaining a next-generation airline Order Management System using cloud-native microservices on Google Cloud Platform. The position involves designing scalable, low-latency backend systems, driving architectural improvements, and mentoring teams in an Agile/Scrum environment. The platform processes millions of global travel transactions and supports modern e-commerce-driven airline operations. 🗂️ Requirements: 6+ years of professional software development experience, Experience in Agile/Scrum environments, Degree in Computer Science or equivalent certifications, Advanced backend programming in Java, Experience with Spring and Web Services, Knowledge of Google Cloud Platform, Experience with cloud-native application development, Understanding of algorithms, data structures, and computational complexity, Experience with CI/CD pipelines, Experience with containerization tools, Ability to troubleshoot high-volume low-latency systems, English communication skills, Legal work permit in Poland 📃 Skills: Java, Spring, GCP, Git, Maven, Jenkins, Docker, Kubernetes, CI/CD, Scrum, Microservices, WebServices, Algorithms, Cloud 🏢 Description: Project Info: Join our global, decision-driving team based in Krakow and become a key player in fundamentally transforming the global travel industry. We are designing, building, and maintaining a next-generation, high-scale, and low-latency Order Management System for airlines. Our mission is to replace legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. We develop scalable, microservice-based, and cloud-oriented architectures running on Google Cloud Platform (GCP). This is a mission-critical platform where we leverage AI productivity tools to securely process millions of global transactions and support millions of traveling passengers daily. If you want to tackle complex state management, work with mature Scrum processes, and build a massive market differentiator, this journey is for you. Responsibilities: As a Senior Software Engineer, you will plan, design, develop, and test complex software systems, having a direct impact on our architectural direction. Your main duties will include: Development & Design: Developing, coding, testing, and debugging complex software solutions and new cloud-native microservices using advanced technologies. Architecture & Innovation: Actively designing prototypes, proposing architectural enhancements, and handling the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Quality & Best Practices: Encouraging high coding standards, promoting best practices, and ensuring top-tier software quality. Mentorship & Leadership: Providing technical mentorship and cultural/competency-based guidance to the team, sharing larger business/product context, and mentoring on specific tech stacks. Collaboration: Regularly interacting with architects, product managers, and technical panels to align business requirements with advanced technology. Representing the team in cross-functional and cross-team meetings. Requirements: Experience & Education: 6+ years of related professional experience in fast-paced software development within an Agile/Scrum environment. Degree in Computer Science, a related field, or equivalent professional certifications. Technical Expertise: Deep knowledge of the Java ecosystem, including advanced backend programming, solution design, Spring, and Web Services. Strong grasp of cloud technologies, particularly Google Cloud Platform (GCP) and cloud-native application development. Solid understanding of computer science fundamentals, including algorithms, data structures, and computational complexity. Practical experience with CI/CD pipelines and containerization tools (e.g., Git, Maven, Jenkins, Docker, Kubernetes). Proven ability to troubleshoot intricate software issues and handle high-volume, low-latency transaction systems. Communication & Personal Attributes: Excellent English communication skills (both written and verbal) for seamless daily collaboration in a global environment. Exceptional analytical and problem-solving skills. Strong interpersonal skills with the ability to influence technical decisions and gain acceptance from others in sensitive situations without damaging relationships. Self-disciplined, commitment-oriented, and passionate about continuous learning and staying up-to-date with industry trends. Must possess a legal work permit in Poland Benefits: General benefits - depends on the form of employment Hybrid work model combining office & remote work - 3 x per week work from the office Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

🏢 Summary: Senior Software Engineer role focused on designing and developing a next-generation, cloud-native Order Management System for the airline industry. The position involves building high-scale, low-latency microservices on Google Cloud Platform, shaping architecture, and ensuring high software quality in an Agile/Scrum environment. You will work on mission-critical systems processing millions of global transactions daily while mentoring others and influencing technical direction. 🗂️ Requirements: 6+ years of professional software development experience in Agile/Scrum environment, Degree in Computer Science or related field, or equivalent certifications, Deep knowledge of Java ecosystem and backend development, Experience with Spring and Web Services, Strong experience with Google Cloud Platform (GCP) and cloud-native development, Solid understanding of algorithms, data structures, and computational complexity, Experience with CI/CD pipelines and containerization tools, Ability to troubleshoot complex, high-volume, low-latency systems, Fluent English (written and spoken), Legal work permit in Poland 📃 Skills: Java, Spring, GCP, Microservices, WebServices, CI/CD, Git, Maven, Jenkins, Docker, Kubernetes, Algorithms, DataStructures 🏢 Description: Project Info: Join our global, decision-driving team based in Krakow and become a key player in fundamentally transforming the global travel industry. We are designing, building, and maintaining a next-generation, high-scale, and low-latency Order Management System for airlines. Our mission is to replace legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. We develop scalable, microservice-based, and cloud-oriented architectures running on Google Cloud Platform (GCP). This is a mission-critical platform where we leverage AI productivity tools to securely process millions of global transactions and support millions of traveling passengers daily. If you want to tackle complex state management, work with mature Scrum processes, and build a massive market differentiator, this journey is for you. Responsibilities: As a Senior Software Engineer, you will plan, design, develop, and test complex software systems, having a direct impact on our architectural direction. Your main duties will include: Development & Design: Developing, coding, testing, and debugging complex software solutions and new cloud-native microservices using advanced technologies. Architecture & Innovation: Actively designing prototypes, proposing architectural enhancements, and handling the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Quality & Best Practices: Encouraging high coding standards, promoting best practices, and ensuring top-tier software quality. Mentorship & Leadership: Providing technical mentorship and cultural/competency-based guidance to the team, sharing larger business/product context, and mentoring on specific tech stacks. Collaboration: Regularly interacting with architects, product managers, and technical panels to align business requirements with advanced technology. Representing the team in cross-functional and cross-team meetings. Requirements: Experience & Education: 6+ years of related professional experience in fast-paced software development within an Agile/Scrum environment. Degree in Computer Science, a related field, or equivalent professional certifications. Technical Expertise: Deep knowledge of the Java ecosystem, including advanced backend programming, solution design, Spring, and Web Services. Strong grasp of cloud technologies, particularly Google Cloud Platform (GCP) and cloud-native application development. Solid understanding of computer science fundamentals, including algorithms, data structures, and computational complexity. Practical experience with CI/CD pipelines and containerization tools (e.g., Git, Maven, Jenkins, Docker, Kubernetes). Proven ability to troubleshoot intricate software issues and handle high-volume, low-latency transaction systems. Communication & Personal Attributes: Excellent English communication skills (both written and verbal) for seamless daily collaboration in a global environment. Exceptional analytical and problem-solving skills. Strong interpersonal skills with the ability to influence technical decisions and gain acceptance from others in sensitive situations without damaging relationships. Self-disciplined, commitment-oriented, and passionate about continuous learning and staying up-to-date with industry trends. Must possess a legal work permit in Poland Benefits: General benefits - depends on the form of employment Hybrid work model combining office & remote work - 3 x per week work from the office Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

🏢 Summary: 6-month full-time Graduate Program focused on building modern e-commerce web applications with AI-powered features. Participants gain hands-on experience in frontend development using React or Angular, integrating with backend services, APIs, and cloud technologies. The role emphasizes practical learning in real digital commerce projects under senior developer mentorship. 🗂️ Requirements: Solid knowledge of HTML, Solid knowledge of CSS, Solid knowledge of JavaScript, Solid knowledge of TypeScript, Understanding of ES6+, Understanding of asynchronous programming, Knowledge of browser APIs, Familiarity with responsive design, Basic experience with React or Angular, Experience with modern styling approaches (Tailwind or CSS Modules), Basic knowledge of RESTful APIs, Experience with Git, Practical ability to use AI development tools 📃 Skills: HTML, CSS, JavaScript, TypeScript, ES6, React, Angular, Tailwind, CSSModules, REST, Git, Nodejs, SQL, NoSQL, Cloud, APIs, AI 🏢 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 modern e-commerce web applications and integrate them with backend services and AI solutions. Create performant and interactive user interfaces using frameworks like React or Angular, writing reusable, scalable code with TypeScript. Deliver AI-powered features such as product recommendations or conversational shopping experiences by integrating the frontend with intelligent APIs. Collaborate effectively with designers, product managers, and backend engineers, developing both your technical and soft skills. Gain practical knowledge of Node.js, cloud platforms, and databases, broadening your perspective beyond the frontend layer. What we’re looking for Solid frontend fundamentals : HTML, CSS, JavaScript, and TypeScript. A formal degree isn't required - skills matter most. Good understanding of modern JavaScript (ES6+) , asynchronous programming, and browser APIs. Familiarity with responsive design principles and cross-browser compatibility. Basic experience with React OR Angular and modern styling approaches (e.g., Tailwind, CSS Modules). Basic knowledge of RESTful APIs and using version control systems (Git). Practical ability to use AI tools - you're comfortable using code assistants, design-to-code tools, or AI-based debugging solutions. A broader understanding of the frontend role: basic knowledge of Node.js, cloud concepts, and databases (SQL/NoSQL) is a plus. Communicative spoken English (min. B2 level) and Polish. Strong problem-solving skills, a willingness to learn, and a proactive attitude. 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!

🏢 Summary: The offer is for a Software Engineer role focused on developing digital customer-oriented solutions within a SAFe-based environment. The position involves implementing backlog items, writing and testing code, and deploying features through CI/CD pipelines. The role supports continuous delivery of web applications using modern JavaScript technologies. 🗂️ Requirements: 3+ years experience as Software Engineer, Polish C2 level, English C1 level, Very good knowledge of JavaScript, Very good knowledge of TypeScript, Very good knowledge of React.js, Good knowledge of Node.js, Experience with unit testing, Experience with GitHub, Experience working with Jira, Ability to work in SAFe environment 📃 Skills: JavaScript, TypeScript, React, Node.js, Jira, GitHub, CI/CD, AWS, Scrum, SAFe 🏢 Description: Project main objective is to create added value for customers through digital innovations and simplified customer-oriented service offerings and at the same time to improve efficiency of operation processes and increase sales potential (On- and Offline). SAFe methodology has been implemented in June 2019. Development is based on Program Increment / Features. Key Responsibilities In particular, the services to be provided under the contract comprise the following: compliance with company standards reviewing development backlog in Jira, picking up the next priority Development backlog item/user story, writing the code to fulfil the functional and non-functional aspects of the backlog item, writing unit tests to cover the acceptance criteria for the backlog item, submit a pull request to check in the code into GitHub, address any peer review feedback coming from the pull request review, trigger the CI/CD pipeline to deploy the new feature into the test environment. Required Qualifications Over three years of experience on regular software engineer position Polish – C2, English C1 Javascript (Typescript, React.js) – very good knowledge Node.js – good knowledge Problem-solving and analytical skills. Ability to work independently, analyze complex problems, and propose effective solutions Nice to have: Experience with AWS Scrum/Safe 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: Senior Backend Engineer role focused on driving platform evolution, contributing to architecture decisions, and maintaining high code quality standards. The position involves hands-on development in Node.js and TypeScript, strong ownership of AWS-based cloud infrastructure, and collaboration on scalable, secure backend systems. The role also includes defining technical direction, improving CI/CD and observability, and mentoring team members. 🗂️ Requirements: 5+ years of backend development experience, Strong hands-on experience with Node.js, Strong hands-on experience with TypeScript, Deep expertise in AWS cloud services, Experience with ALB and NLB management, Experience with AWS WAF configuration and operations, Experience building secure and scalable cloud-native applications, Production experience with MongoDB, Strong understanding of RESTful APIs, Experience with complex backend integrations, Proficiency with Git, Experience with Docker, Experience with CI/CD tools such as GitHub Actions or Jenkins 📃 Skills: Node.js, TypeScript, AWS, ALB, NLB, WAF, MongoDB, REST, Git, Docker, CICD, GitHubActions, Jenkins 🏢 Description: Opis stanowiska: Work closely with the system architect to drive platform evolution and long-term technical decisions Actively contribute to development, architecture discussions, and code quality initiatives Define and plan technical work in collaboration with stakeholders and team members Promote engineering excellence: clean code, peer reviews, testing, observability, and CI/CD Provide mentoring, support, and guidance to team members Wymagania: 5+ years of backend development experience with strong hands-on skills in Node.js and TypeScript Deep expertise in AWS, with focus on: Load Balancer (ALB/NLB) management, AWS WAF setup and operations, Security and scalability in cloud-native applications Production experience with MongoDB Solid understanding of RESTful APIs and complex backend integrations Proficiency with Git, Docker, and CI/CD tools (e.g., GitHub Actions, Jenkins) Excellent communication skills in English — written and spoken — to work effectively in international teams Proactive, structured, and able to drive initiatives independently Optional Experience with event-driven systems (e.g., Kafka) Exposure to IoT or Smart Home platforms Familiarity with tools like Confluence, JIRA, React, or similar Oferujemy: Dynamic International Environment: Collaborate with diverse teams globally, enriching your experience and expanding your professional network Collaborative Team Culture: Join a supportive team that values your contributions and encourages your growth Professional Development Opportunities: Expand your skills through engaging projects and responsibilities that challenge and inspire you Flexible hybrid work arrangements: Enjoy a mix of remote work and office collaboration, with a minimum of one day per week in our modern offices Comprehensive Benefits Package: Enjoy private health care, a Lunchpass card, a sports card, group insurance options and employee discounts

🏢 Summary: Front-End Developer role focused on building high-quality, design-driven e-commerce stores for global DTC brands using a modern tech stack. The position involves creating responsive, performant, and accessible user interfaces while collaborating closely with a senior engineering team. It offers clear growth levels and end-to-end ownership of features from concept to deployment. 🗂️ Requirements: Minimum 2 years of experience with JavaScript, Minimum 2 years of experience with HTML, Minimum 2 years of experience with CSS, Experience building responsive layouts, Knowledge of web performance best practices, Knowledge of accessibility standards, Knowledge of SEO principles, Experience integrating third-party APIs, Fluent Polish language, Communicative English (verbal and written) 📃 Skills: JavaScript, TypeScript, HTML, CSS, Sass, React, Remix, Next.js, Shopify, Hydrogen, Liquid, Oxygen, Vercel, Cloudflare, APIs, SEO, CoreWebVitals 🏢 Description: More about us and our projects [ click ] Hey! We’re looking for a talented Front-End Developer to help us build beautiful e-commerce stores for some of the world’s best DTC brands. If you want to level up your front-end skills, work in a modern tech stack, and be part of a senior team - this role is for you. We also take growth seriously. We have four clearly defined engineering levels (SE I, SE II, Senior SE I, Senior SE II), each with explicit expectations. You’ll always know where you stand and what’s required to reach the next level. What we do Since 2019, we’ve worked with brands like Lady Gaga, Carhartt WIP, Magda Butrym and Rolex , and collaborated with designers from Pentagram , ex-Tesla , and ex-Apple . We're focused entirely on eCommerce , and our goal is simple: to be one of the best eCommerce tech teams in the world . About the Role Skills we're looking for 2+ years of experience in Javascript, HTML and CSS Experience in building high-quality, responsive layouts Eye for the design detail and caring about user experience Awareness of web performance best practices (Core Web Vitals), developing for accessibility and SEO Interpreting and working with third-party APIs Communicative in both verbal and written English Fluency in Polish language What makes a strong fit You think in trade-offs - when you choose an approach, you can explain why and what you're giving up You own your work end-to-end: from unclear brief to deployed feature, including the parts nobody explicitly asked you to handle When something isn't going to plan, you raise it early - and you bring a proposal, not just the problem You can explain a technical decision clearly to a developer and a PM in the same conversation Nice to have: Experience in e-commerce (any platform) What it’s really like to work here At Commerce-UI, we trust each other’s judgment and take pride in our craft. Everyone here owns their work - not because someone expects it, but because we care about what we build and the people we build it with. We believe in high standards and flexibility, and we back that with real autonomy from day one. You’ll quickly see how we operate: fast, focused, and with a lot of trust that everyone knows what they’re doing. We don’t rely on layers of management or rigid playbooks. Instead, we collaborate closely, share context openly, and help each other grow. Things move quickly, but that’s part of the fun - it’s how we learn, adapt, and ship meaningful products for iconic brands. If you value ownership, clarity, and a team that believes in mutual trust and high craftsmanship, you’ll feel right at home with us. Why you’ll love working here Small, senior, passionate team - no bureaucracy, real impact Work on ambitious, design-led projects for global brands Freedom to shape how we build things Competitive pay and flexible, remote-friendly culture Our Tech stack Shopify Hydrogen (React-Router 7/Remix) or Next.js Oxygen, Vercel, Cloudlfare Shopify Liquid/Online Store 2.0 Typescript (always) CSS, Sass, CSS Modules, Stitches, Vanilla extract Toolkit Cursor, Webstorm ChatGPT Google Workspace Jira Notion Loom Team Most of the time, you’ll collaborate closely with: Tomek and Kuba - Engineering Managers Robert - Head of Project Management Michał - Co-Founder & CTO Szymon - Co-Founder How our hiring process looks like? Application → send us your CV and any link/portfolio that show your craft. We review every application and always get back to you - regardless of the outcome. Discovery call → this is short (30 minutes) mutual check-in - we want to understand your expectations and share ours. We will talk in Polish, and English. Task → a short focused task based on the kind of work we actually do. 1-1,5 hours with clear instructions. We respect your time. Tech call → a deep dive into how you think and solve problems. You’ll chat with Kuba or Tom (our Engineering Managers) - no trick questions, just real talk about tech and delivery. Offer → if it’s a match, we’ll schedule a short call (20-30 minutes) to go over the details and next steps. If we don’t move forward we’ll do our best to give you thoughtful feedback.

🏢 Summary: Senior backend engineering role focused on building and maintaining a high-performance airline retailing and merchandising platform. The position involves developing Java-based microservices, REST and gRPC services, and cloud-native solutions on GCP and Kubernetes to support booking, ticketing, pricing, and optimization systems. Candidates will collaborate across QA, SRE, and Product teams while contributing to CI/CD, monitoring, troubleshooting, and production support. 🗂️ Requirements: 8+ years of experience with Java and Spring Boot, Experience building microservices, Experience with REST APIs, Experience with gRPC services, Hands-on experience with GCP, Hands-on experience with Docker, Hands-on experience with Kubernetes, Knowledge of GitHub, Knowledge of Jenkins or GitHub Actions, Familiarity with Prometheus, Familiarity with Stackdriver or Cloud Monitoring, Basic scripting skills in Python or Bash, Experience with WireMock, Experience with performance testing, Legal work permit in Poland 📃 Skills: Java, Spring, SpringBoot, Microservices, REST, gRPC, GCP, Docker, Kubernetes, GitHub, Jenkins, GitHubActions, Prometheus, Stackdriver, Python, Bash, WireMock 🏢 Description: Project info: The airline retailing and merchandising platform that enables airlines to create personalized offers and dynamic pricing for customers. Team is responsible to deliver modern, omni-channel, real-time retailing shopping experience. Provide reduced cost through consolidation of common components including consolidation of offer management system. This is a unique opportunity to work on a critical and operationally complex high-performance product that also interacts with several of mission critical products. That will help the selected candidate to work on high-performing products as well expose opportunity to other products and enable the candidate to grow in their career. Key Functional Areas: System Integration: Facilitating robust and efficient communication between internal microservices and proprietary components. Booking & Ticketing Lifecycle: Supporting core transactional flows, including ticket reservations, refunds, and exchanges. Search & Optimization: Powering backend algorithms designed to find and generate the most optimal flight connections. Financial Calculations: Handling complex pricing engines, fare structures, and diverse cost-assessment calculations. Responsibilities: Design, develop, test and maintain backend applications using Java and Spring Boot. Build and support RESTful APIs and gRPC services. Develop solutions deployed on Google Cloud Platform (GCP) and Kubernetes. Collaborate with QA, SRE, and Product teams. Participate in CI/CD processes, deployments, and production support. Provide support during release cycles, including smoke testing, manual validation. Troubleshoot issues using logs, metrics, and monitoring tools. Conduct code reviews, mentor junior developers, and participate in an on-call rotation. Requirements: 8+ years of experience with Java and Spring Boot. Experience building microservices, REST APIs, and gRPC services. Hands-on experience with GCP, Docker, and Kubernetes. Knowledge of GitHub, Jenkins, or GitHub Actions. Familiarity with monitoring tools such as Prometheus and Stackdriver/Cloud Monitoring. Basic scripting skills in Python or Bash. Experience with WireMock and performance testing. Must possess a legal work permit in Poland Benefits: General benefits - depends on the form of employment Hybrid work model combining office & remote work Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

🏢 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!

🏢 Summary: Senior Frontend Engineer role focused on building and scaling a modern fintech platform for managing corporate spending. The position involves leading development of React and TypeScript-based SPA applications, integrating with microservices and APIs, and driving performance and architectural improvements. You will collaborate cross-functionally while mentoring engineers and shaping scalable front-end solutions in a cloud-native environment. 🗂️ Requirements: 5+ years professional software engineering experience, Strong commercial experience with React, Strong expertise in TypeScript, Advanced knowledge of modern JavaScript (ES6+), Experience building large-scale SPA applications, Experience designing scalable front-end architectures, Experience working with APIs and microservices-based systems, Hands-on experience with front-end testing (unit, integration, e2e), Experience with CI/CD pipelines, Experience with AWS, Experience with Kubernetes, Professional English proficiency (min. B2), Fluent Polish, Residence in Poland 📃 Skills: React, TypeScript, JavaScript, ES6, SPA, REST, GraphQL, Microservices, CI/CD, AWS, Kubernetes, Testing, SSR 🏢 Description: Join a team building a modern fintech platform that helps businesses manage company spending more efficiently. The project focuses on developing a financial product that enables seamless integration of financial tools—including corporate cards, expense management, and invoice processing—directly with partner ecosystems such as banks, accounting platforms, and HR systems. The platform empowers companies to automate financial operations, simplify reconciliation processes, and gain full real-time visibility into their spending. Your tasks Lead initiatives focused on designing, building, and maintaining scalable front-end applications primarily using React and TypeScript Build modern, performant, and intuitive user interfaces for key areas of the fintech platform Collaborate closely with cross-functional teams across backend engineering, product, and design to deliver scalable product solutions Integrate front-end applications with microservices-based architectures and APIs (REST / GraphQL) Analyze application performance and implement optimizations to ensure high responsiveness, reliability, and scalability Participate in code reviews, architecture discussions, and post-mortems while mentoring other engineers Proactively address technical debt and guide the team through technical challenges, refactoring initiatives, and architectural migrations Requirements At least 5 years of professional software engineering experience, including strong commercial experience with React Strong expertise in TypeScript, modern JavaScript (ES6+), and building large-scale SPA applications Solid experience designing scalable front-end architectures using component-based and modular design principles Experience working with APIs and distributed systems in microservices-based environments Hands-on experience with front-end testing frameworks (unit, integration, e2e) and observability/monitoring tools Previous work with CI/CD pipelines, cloud environments such as AWS, and container orchestration platforms like Kubernetes Strong problem-solving skills, ownership mindset, and passion for mentoring and elevating engineering teams Professional English proficiency - minimum B2 Fluent in Polish required Residing in Poland required Nice-to-have requirements Previous experience in fintech or building financial products Understanding of payments, cards, expense management, or accounting-related domains Experience working in a scale-up environment Experience with GraphQL, SSR, performance optimization, or building design systems What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!