Job Description Senior Software Engineer Who we are Worldline helps businesses of all shapes and sizes to accelerate their growth journey - quickly, simply, and securely. We are the innovators at the heart of the payments technology industry, shaping how the world pays and gets paid. Our technology powers the growth of millions of businesses across 5 continents. And just as we help our customers accelerate their business, we are committed to helping our people accelerate their careers. Together, we shape the evolution. Objective Design and develop software solutions with regard to full technical stack in line with business requirements, applying architectural best practices for efficient code creation. Ensure software quality throughout the entire software development lifecycle to deliver reliable products. Activity Concept and Design Collaborate with stakeholders, including product managers and designers, to understand project requirements and objectives. Contribute to the conceptualization and design of software solutions, ensuring alignment with business goals. Translate high-level requirements into detailed technical specifications and system designs. Apply software architecture principles to create scalable and modular software structures. Planning Participate in project planning and estimation, providing insights into technical feasibility and effort required. Break down software development tasks into actionable items and prioritize them based on project goals and timelines. Identify potential risks and challenges early in the planning phase and propose mitigation strategies. Updates and Maintenance Perform regular updates, enhancements, and optimizations to existing software systems. Debug and troubleshoot issues reported by users or identified during maintenance cycles. Collaborate with the operation team to ensure smooth operation, stability, and reliability of software products. Implement backward-compatible changes and updates to maintain software integrity. Coding and Testing Write clean, efficient, and maintainable code according to coding standards and best practices. Develop software components and features using appropriate programming languages and frameworks. Implement automated unit tests, integration tests, and regression tests to ensure software quality. Debug and resolve issues identified during testing phases, maintaining a focus on code quality and performance. Analysis Analyze complex technical problems and propose innovative solutions to improve software functionality and performance. Conduct thorough code reviews, providing constructive feedback to peers and fostering a culture of code quality. Perform performance analysis to identify bottlenecks and areas for optimization in software systems. Use data-driven insights to make informed decisions about software design, architecture, and improvements. Footer Perks & Benefits At Worldline you’ll get the chance to be at the heart of the global payments technology industry and shape how the world pays and gets paid. On top of that, you will also: Be part of a company guided by a strong purpose to do good and recognized as top 1% of the most sustainable companies in all sectors worldwide. Work with inspiring colleagues and be empowered to learn, grow and accelerate your career. Work in an international environment with cutting edge technologies. Enjoy a wide range of benefits: medical insurance, pension found, tickets restaurant, company bonus, 50% of remote working. Learn more about life at Worldline at jobs.worldline.com We are proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or any applicable legally protected characteristics. #LI-ER1 Salary Information In accordance with the EU Pay Transparency Directive, the salary range for this position is between: Italy: 48,000.00 euro and 65,000.00 euro gross annual salary. The final offer will be determined based on the candidate's professional experience, specific skills, and qualifications. Shape the evolution We are on an exciting journey towards the next frontiers of payments technology, and we look for big thinkers, people with passion, can-do attitude and a hunger to learn and grow. Here you'll work with ambitious colleagues from around the world, take on unique challenges as a team, and make a real impact on the society. With an empowering culture, strong technology and extensive training opportunities, we help you accelerate your career - wherever you decide to go. Join our global team of 18,000 innovators and shape a tomorrow that is yours to own. Learn more about life at Worldline at jobs.worldline.com We are proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or any applicable legally protected characteristics. Information at a Glance Apply now Request ID: 303769 Posting Start Date: 8/25/26 Job Area: Technology Work Site: Hybrid Contract Type: Permanent Brand: Worldline Job Location: Italy - Milan