Senior Java Developer

🏢 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: Senior Software Engineer role focused on designing and building a next-generation, cloud-native Order Management System for airlines. The position involves developing high-scale, low-latency microservices on Google Cloud Platform to replace legacy ticketing with a modern Offer & Order ecosystem. The engineer will drive architecture, ensure software quality, and contribute to mission-critical systems processing millions of transactions daily. 🗂️ Requirements: 6+ years experience in Agile/Scrum software development, Degree in Computer Science or equivalent certification, Advanced backend development in Java, Experience with Spring and Web Services, Hands-on experience with Google Cloud Platform, Experience in cloud-native microservices architecture, Strong knowledge of algorithms and data structures, Experience with CI/CD pipelines, Experience with containerization and orchestration, Ability to troubleshoot high-volume low-latency systems, Legal work permit in Poland 📃 Skills: Java, Spring, GCP, Microservices, REST, CI/CD, Git, Maven, Jenkins, Docker, Kubernetes, Algorithms, DataStructures, Scrum 🏢 Description: 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: Software Engineer role focused on building and scaling a cloud-native, high-performance order management platform for the airline industry. The position involves designing, developing, and deploying mission-critical microservices in a modern Offer & Order ecosystem, ensuring high availability and low latency. You will work in an Agile environment to enhance architecture, integrate legacy systems, and deliver secure, high-quality software solutions. 🗂️ Requirements: 6-9 years of software development experience, Experience in Agile software development, Strong experience with Java, Experience with Spring framework, Experience with Web Services, Experience with Git, Experience with Maven, Experience with Jenkins, Experience with Docker, Knowledge of GCP cloud technologies, Ability to design and develop microservices, Legal work permit in Poland 📃 Skills: Java, Spring, WebServices, Git, Maven, Jenkins, Docker, GCP, Microservices, Agile, Cloud 🏢 Description: Project Info Our customer is building a cloud-native order management system for airlines that replaces legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. As a Software Engineer on this high-scale, low-latency platform, you will leverage AI tools to gain productivity while designing, coding, and deploying mission-critical microservices capable of securely processing millions of global transactions. You will tackle complex state management and troubleshoot intricate software issues to handle the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Working closely with technical panels, you will actively design prototypes, propose architectural enhancements, and align business requirements with advanced technology. If you have the right mindset, join us on this thrilling journey to build a massive market differentiator that will fundamentally transform the global travel industry. Responsibilitie Develops, codes, tests and debugs new complex software solutions or enhancements to existing product Designs, plans, develops and improves applications using routine and advanced technology Works on issues where analysis of situations or data requires an in-depth knowledge of application & system Encourage high coding standards, using best practices and high quality Represents team on cross-teams’ meetings Job Requirements around 6-9 years of related experience Experience in fast paced Software Development in Agile environment Experience in: Java, Spring, Web Services Experience with tools like Git, Maven, Jenkins, Docker Good knowledge of cloud based technologies (GCP) Excellent analysis and problem-solving skills Good communication skills in English, both written and verbal 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: Design and develop a high-scale, low-latency cloud-native order management system for airlines, replacing legacy ticketing with a modern Offer & Order platform. The role focuses on building and optimizing mission-critical microservices, handling complex state management, and integrating with legacy systems in a cloud environment. You will work in an Agile team to deliver secure, high-performance solutions processing millions of global transactions. 🗂️ Requirements: 6-9 years of software development experience, Experience in Agile software development, Strong experience with Java, Strong experience with Spring, Experience with Web Services, Experience with Git, Experience with Maven, Experience with Jenkins, Experience with Docker, Knowledge of GCP cloud technologies, Strong analytical and problem-solving skills, English proficiency (written and verbal), Legal work permit in Poland 📃 Skills: Java, Spring, WebServices, Git, Maven, Jenkins, Docker, GCP, Agile, Microservices, Cloud 🏢 Description: Project info Our customer is building a cloud-native order management system for airlines that replaces legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. As a Software Engineer on this high-scale, low-latency platform, you will leverage AI tools to gain productivity while designing, coding, and deploying mission-critical microservices capable of securely processing millions of global transactions. You will tackle complex state management and troubleshoot intricate software issues to handle the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Working closely with technical panels, you will actively design prototypes, propose architectural enhancements, and align business requirements with advanced technology. If you have the right mindset, join us on this thrilling journey to build a massive market differentiator that will fundamentally transform the global travel industry. Responsibilities Develops, codes, tests and debugs new complex software solutions or enhancements to existing product Designs, plans, develops and improves applications using routine and advanced technology Works on issues where analysis of situations or data requires an in-depth knowledge of application & system Encourage high coding standards, using best practices and high quality Represents team on cross-teams’ meetings Job requirements around 6-9 years of related experience Experience in fast paced Software Development in Agile environment Experience in: Java, Spring, Web Services Experience with tools like Git, Maven, Jenkins, Docker Good knowledge of cloud based technologies (GCP) Excellent analysis and problem-solving skills Good communication skills in English, both written and verbal 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: Senior Software Engineer role focused on designing and developing scalable, cloud‑native Order management services within a microservice architecture. The position involves advanced backend development in the Java ecosystem, contributing to high‑volume transactional systems used globally. The role combines hands‑on coding, solution design, and technical mentorship in an Agile environment. 🗂️ Requirements: Minimum 5 years of professional software development experience, Advanced programming and solution design skills in Java ecosystem, Strong backend development experience, Solid knowledge of algorithms, data structures, computational complexity, Experience with Google Cloud Platform (GCP), Experience with CI/CD pipelines, Experience with containerization technologies, Experience with cloud‑native architectures, Experience working in Agile environment, Degree in Computer Science or related field or equivalent certifications, Legal work permit in Poland 📃 Skills: Java, GCP, Docker, Kubernetes, CI/CD, Microservices, Algorithms, DataStructures, Cloud, Scrum 🏢 Description: Project info: The Reservation Management team focuses on designing, developing, and maintaining a variety of Order services running on open systems. The team is responsible for Order data distribution to internal and external customers, hosting multiple Order management services, and building an Order data store based on a modern, scalable, microservice-based, cloud-oriented architecture. We use the latest technologies and best engineering practices to handle a high volume of transactions supporting millions of traveling passengers daily. The team operates globally, with the main decision‑driving group located in Kraków, and follows mature Scrum processes. Due to the dynamic growth of the team, we are currently looking for a candidate to join us in the role of Senior Software Engineer. Responsibilities: Develop, code, test, and debug new complex software solutions or enhancements to existing products Design, plan, develop, and improve applications using both routine and advanced technologies Work on complex issues requiring in-depth analysis of organizational objectives; implement strategic policies when selecting methods and techniques Promote high coding standards, best practices, and high-quality deliverables Collaborate regularly with supervisors, architects, product managers, and HR on project-related and team performance topics; influence decision-making in sensitive situations without damaging relationships Provide technical mentorship and competency-based guidance to development teams Share broader business and product context; mentor others on specific tech stacks and technologies Assist in the development of software technical documentation Requirements: Technical Expertise: Advanced programming and solution design skills with deep knowledge of the Java ecosystem Strong experience in advanced backend development and solution design Solid understanding of computer science fundamentals, including algorithms, data structures, and computational complexity Strong knowledge of cloud technologies, particularly Google Cloud Platform (GCP) and related services Familiarity with CI/CD pipelines, containerization technologies (e.g., Docker, Kubernetes), and cloud‑native development Communication & Personal Attributes: Excellent problem-solving and analytical skills Proficient English (written and spoken) Self-disciplined and results-oriented mindset Passion for continuous learning and keeping up to date with industry trends Education & Experience: Minimum 5 years of relevant professional experience Degree in Computer Science or a related field, or equivalent certifications Experience working in a fast-paced, Agile software development environment Must possess a legal work permit in Poland Benefits: General benefits - depends on the form of employment Hybrid working model – 3 selected days per week working from the office Flexible working hours , supporting a healthy work-life balance Attractively located office with collaboration spaces 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: Software Engineer role focused on building a cloud-native airline order management platform using modern microservices and AI-assisted development tools. The position involves designing, coding, testing, and deploying high-scale, low-latency applications integrated with legacy systems in an Agile environment. The offer includes hybrid work, professional development support, and comprehensive health and lifestyle benefits. 🗂️ Requirements: 3+ years of software development experience, Experience in Agile software development, Knowledge of Java, Knowledge of Spring, Experience with Web Services, Experience with Git, Experience with Maven, Experience with Jenkins, Experience with Docker, Knowledge of GCP, Strong analytical and problem-solving skills, English communication skills, Legal work permit in Poland 📃 Skills: Java, Spring, Git, Maven, Jenkins, Docker, GCP, Agile, Microservices, WebServices 🏢 Description: Project info: Our customer is building a cloud-native order management system for airlines that replaces legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. As a Software Engineer on this high-scale, low-latency platform, you will leverage AI tools to gain productivity while designing, coding, and deploying mission-critical microservices capable of securely processing millions of global transactions. You will tackle complex state management and troubleshoot intricate software issues to handle the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Working closely with technical panels, you will actively design prototypes, propose architectural enhancements, and align business requirements with advanced technology. If you have the right mindset, join us on this thrilling journey to build a massive market differentiator that will fundamentally transform the global travel industry. Responsibilities: Develops, codes, tests and debugs new complex software solutions or enhancements to existing product Designs, plans, develops and improves applications using routine and advanced technology Works on issues where analysis of situations or data requires an in-depth knowledge of application & system Encourage high coding standards, using best practices and high quality Represents team on cross-teams’ meetings Job requirements: around 3+ years of related experience Experience in fast paced Software Development in Agile environment Experience in: Java, Spring, Web Services Experience with tools like Git, Maven, Jenkins, Docker Good knowledge of cloud based technologies (GCP) Excellent analysis and problem-solving skills Good communication skills in English, both written and verbal 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: Senior Fullstack Developer role focused on building and scaling a high‑volume communication platform in the travel industry that sends time‑critical email and SMS notifications. The position involves delivering end‑to‑end features across Java/Spring Boot backend services and React/TypeScript frontends, designing APIs, and implementing event‑driven integrations. The role includes ensuring quality through automated testing and contributing to CI/CD pipelines in a GCP environment. 🗂️ Requirements: Proficiency in Java, Proficiency in React, Proficiency in TypeScript, Experience with SpringBoot, Strong understanding of distributed systems, Experience with REST APIs, Experience with messaging systems, Experience with Kafka, Experience with SQL databases, Experience with NoSQL databases, Experience with containerized deployments, Experience with GCP, Experience with automated testing, Experience with CI/CD pipelines, Legal work permit in Poland 📃 Skills: Java, SpringBoot, React, TypeScript, REST, Kafka, SQL, NoSQL, GCP, Containerization, CICD, Testing, DistributedSystems 🏢 Description: We are looking for a Senior Fullstack Developer for our client, based in Kraków and surrounding areas. The project involves developing a large-scale communication platform in the travel industry that generates traveler documents and delivers time-critical notifications via email and SMS (over 1 million emails and approximately 100,000 SMS messages daily). The system is responsible for informing travelers about schedule changes, web check-in availability, and flight status (from 24 hours before departure up to the departure time), as well as collecting post-trip feedback. Deliver end‑to‑end features across Java/Spring Boot services and React/TypeScript front‑ends. Design clean APIs and data contracts; implement event‑driven integrations and resilient error handling. Own quality with automated tests at multiple layers and contribute to CI/CD pipelines. Collaborate closely with Product/Design to iterate quickly from discovery to production. Proficiency in Java and React/TypeScript with solid understanding of distributed systems and web fundamentals. Experience with REST, messaging (e.g., Kafka), SQL/NoSQL and containerized deployments. Google GCP experience. Pragmatic testing mindset and effective code review habits. Nice to have Exposure to email/SMS deliverability and localization at scale. Experience building internal admin tooling and dashboards Must possess a legal work permit in Poland 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: Senior Fullstack Developer role focused on building and scaling a high‑volume communication platform in the travel industry, delivering time‑critical notifications via email and SMS. The position involves end‑to‑end development across Java/Spring Boot backend services and React/TypeScript frontends, with emphasis on distributed systems and event‑driven integrations. The role also includes ensuring quality through automated testing and contributing to CI/CD processes in a GCP environment. 🗂️ Requirements: Proficiency in Java, Proficiency in React, Strong knowledge of TypeScript, Experience with Spring Boot, Understanding of distributed systems, Experience with REST APIs, Experience with messaging systems, Knowledge of SQL and NoSQL databases, Experience with containerized deployments, Experience with Google GCP, Experience with automated testing, Experience with CI/CD pipelines, Legal work permit in Poland 📃 Skills: Java, SpringBoot, React, TypeScript, REST, Kafka, SQL, NoSQL, GCP, Docker, CICD, Testing 🏢 Description: We are looking for a Senior Fullstack Developer for our client, based in Kraków and surrounding areas. The project involves developing a large-scale communication platform in the travel industry that generates traveler documents and delivers time-critical notifications via email and SMS (over 1 million emails and approximately 100,000 SMS messages daily). The system is responsible for informing travelers about schedule changes, web check-in availability, and flight status (from 24 hours before departure up to the departure time), as well as collecting post-trip feedback. Deliver end‑to‑end features across Java/Spring Boot services and React/TypeScript front‑ends. Design clean APIs and data contracts; implement event‑driven integrations and resilient error handling. Own quality with automated tests at multiple layers and contribute to CI/CD pipelines. Collaborate closely with Product/Design to iterate quickly from discovery to production. Proficiency in Java and React/TypeScript with solid understanding of distributed systems and web fundamentals. Experience with REST, messaging (e.g., Kafka), SQL/NoSQL and containerized deployments. Google GCP experience. Pragmatic testing mindset and effective code review habits. Nice to have Exposure to email/SMS deliverability and localization at scale. Experience building internal admin tooling and dashboards Must possess a legal work permit in Poland 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: Senior Java Developer role focused on designing and owning the end-to-end architecture of a high-throughput, multitenant messaging platform in the travel industry. The position involves building event-driven microservices that generate traveler documents and deliver time-critical notifications via email and SMS at million-scale volumes. The role includes driving modernization, resilience, observability, and cloud-based scalability of the platform. 🗂️ Requirements: Expertise in Java and JVM performance, Experience designing large-scale event-driven systems, Hands-on experience with Spring Boot microservices, Experience with asynchronous messaging and API design, Experience with SQL and NoSQL databases and caching, Experience with Google GCP, Experience with high availability and disaster recovery architectures, Knowledge of email and SMS ecosystems and deliverability, Understanding of security and compliance standards (PII, GDPR, CAN-SPAM), Experience with static code analysis tools, Legal work permit in Poland 📃 Skills: Java, JVM, Spring, SpringBoot, SQL, NoSQL, GCP, OpenTelemetry, GitHubActions, Kubernetes, MTA, SPF, DKIM, DMARC, Veracode, CI, API, SMS, Email 🏢 Description: We are looking for a Senior Java Developer for our client, based in Kraków and surrounding areas. The project involves developing a large-scale communication platform in the travel industry that generates traveler documents and delivers time-critical notifications via email and SMS (over 1 million emails and approximately 100,000 SMS messages daily). The system is responsible for informing travelers about schedule changes, web check-in availability, and flight status (from 24 hours before departure up to the departure time), as well as collecting post-trip feedback. Own the end-to-end technical architecture for a multitenant, high throughput messaging platform: event driven services, template rendering, document generation, deliverability, and channel expansion Define service boundaries, data contracts, and platform SLOs (latency, throughput, deliverability); codify resilience (idempotency, retries, backoff, circuit breaking) and correctness (deduplication, exactly once where feasible). Lead design reviews and drive architectural RFCs/decision records; ensure documentation quality aligns with org guidelines. Guide modernization (e.g., Java 21 and newer, security hardening, SDLC improvements like GitHub Actions CI). Partner with Product to translate roadmap themes into platform epics (capacity, compliance, channel enablement); sequence tech debt with product outcomes. Elevate engineering standards, performance tuning, and observability (OpenTelemetry, metrics, logs, tracing). Collaborate with deliverability/infra teams on MTA configuration, SPF/DKIM/DMARC alignment, and reporting pipelines for at scale sending. Deep expertise in Java and JVM performance; significant experience designing event driven systems at millions per day scale. Handson Spring Boot microservices, asynchronous messaging, API design, and data stores (SQL/NoSQL, caching), Google GCP experience. Proven track record with HA, disaster recovery, multiregional patterns, and observability first design. Knowledge of email/SMS ecosystems (MTA, deliverability, anti abuse, link tracking, templating, internationalization). Security and compliance awareness (PII, GDPR, CAN-SPAM), static analysis workflows (e.g., Veracode). Ability to influence across product/engineering; excellent written design documentation. Nice to have Experience enabling new channels (RCS/WhatsApp), running canary/feature flags, and cost/perf optimization on cloud Kubernetes. Must possess a legal work permit in Poland 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: Junior Java Engineer role focused on developing and maintaining backend services and microservices in a cloud-based environment within a Scrum team. The position involves hands-on Java development, testing, and support under senior mentorship, with exposure to modern cloud technologies. Hybrid work model with client interaction and opportunities to grow in cloud engineering. 🗂️ Requirements: 1+ years of software development experience or strong junior-level hands-on practice, Hands-on experience with Java, Basic knowledge of object-oriented programming, Basic knowledge of RESTful APIs, Basic knowledge of Git or version control systems, Basic knowledge of SQL, Familiarity with unit testing frameworks, Understanding of software development lifecycle, English proficiency at B2 level, Ability to self-manage tasks and meet deadlines 📃 Skills: Java, OOP, REST, Git, SQL, JUnit, Mockito, Scrum, GCP, Spring, SpringBoot, Microservices, Kotlin 🏢 Description: Are you passionate about Java and eager to grow your skills as a Junior Java Engineer in a dynamic, cloud-focused environment? Join our international team of experienced developers and architects, where you’ll learn from senior engineers and mentors while contributing to the development and maintenance of modern cloud-based applications. We value transparency, autonomy, and continuous improvement, and we’re looking for a motivated self-starter ready to take ownership and grow within a Scrum team. This role offers a hybrid model, with 3 days per week working from the client's office in Kraków, Poland. Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Support the development, testing, and maintenance of backend services and microservices using Java Implement small features and bug fixes under the guidance of senior engineers Write clean, readable, maintainable, and well-tested code following team standards and best practices Participate in code reviews as a learner and apply received feedback Assist in troubleshooting and resolving technical issues together with the team Take part in Agile ceremonies (daily stand-ups, sprint planning, reviews, retrospectives) Communicate with stakeholders and team members to clarify requirements and implementation details Contribute to technical documentation and knowledge sharing within the team Requirements 1+ years of experience in software development or strong junior-level hands-on practice Hands-on experience with Java Basic knowledge of object-oriented programming, RESTful APIs, Git/version control, and SQL Familiarity with unit testing (e.g. JUnit, Mockito) Understanding of the software development lifecycle (analysis, design, implementation, testing, support) English level B2 with readiness for client-facing communication Ability to self-manage tasks, prioritize work, and meet deadlines Nice to have Basic knowledge or initial experience with Google Cloud Platform (GCP) Familiarity with Spring / Spring Boot Exposure to microservices architecture Experience or interest in Kotlin We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively.