Senior Software Engineer

<p>This role is at Paxport - Pax2pay's sister company</p><p></p><h3>Overview</h3><p></p><p>Paxport is a growing travel tech company transforming the digital travel experience. We provide innovative, API-first solutions for airlines and travel resellers.</p><p></p><p>Being a small team working in an agile environment you will directly influence the evolution of our products. We’re heavily focused on aggregating APIs; both designing our own and integrating those offered by suppliers (airlines etc). We also love aggregating data; importing / exporting and all steps in between.</p><p></p><p>Are you a seasoned Java Developer who thrives on complex challenges, including navigating and modernizing critical legacy systems? Do you possess the technical depth to build cutting-edge solutions while ensuring the stability of existing infrastructure? Join our dynamic team where you will be instrumental in evolving our core platform.</p><h3></h3><p>About the Role</p><p>We are seeking a highly experienced Senior Java Developer to join our engineering department. This role is unique and critical, requiring a strong background in modern Java development practices (Java 17+) coupled with a deep, practical understanding of older/legacy enterprise systems. You will be tasked with developing new features, optimizing performance, and strategically migrating components from our legacy codebase to a modern architecture.</p><p></p><p>The ideal candidate will be a collaborative problem-solver, capable of designing large-scale system improvements and mentoring junior team members.</p><p></p><h3>Key Responsibilities</h3><ul><li>Design, develop, test, and deploy highly performant and scalable applications using Java.</li><li>Spearhead the analysis, refactoring, and strategic modernization of mission-critical legacy systems.</li><li>Collaborate with product managers and other engineers to define feature specifications and deliver high-quality solutions.</li><li>Ensure application stability and performance through rigorous testing and monitoring.</li><li>Contribute to technical documentation and maintain clear code standards.</li><li>Participate in code reviews and architectural discussions.</li></ul><h3>Required Qualifications</h3><p></p><p><strong>Experience:</strong> 7+ years of professional software development experience, primarily with Java.</p><p><strong>Java Expertise: </strong>Mastery of modern Java (Java 17+) and the Spring framework (Spring Boot).</p><p><strong>Legacy Systems:</strong> Proven ability to understand, debug, and work effectively with older Java versions (e.g., Java 8, 7) and related enterprise technologies.</p><p><strong>Database Skills: </strong>Strong proficiency in SQL.</p><p><strong>Cloud/DevOps</strong>: Experience with GCP cloud platform and CI/CD pipelines (e.g., Jenkins, GitLab CI).</p><p><strong>Testing: </strong>Expertise in unit, integration, and system testing.</p><p><strong>Microservices: </strong>Experience with microservices architecture and containerization technologies (Docker, Kubernetes).</p><p><strong>Scale: </strong>Working with large-scale, high-availability systems.</p><p></p><p></p><h3>Location and Work Model</h3><ul><li>Location: Remote Sweden / Hybrid / Stockholm Office<br/><br/><br/></li></ul>