Application Developer (f/d/m)

Job Title

Application Developer (f/d/m)

Opportunity

Join a dedicated tribe responsible for the development and services of the Worldline Authorization software suite, Worldline Pay Front Office (WLP FO). We combine expertise in card payment authorization and switching with components for card management back‑office solutions and fraud detection. We are seeking a Senior Application Developer skilled in C++ to contribute to our integrated processing and software licensing offerings within a scalable, DevOps environment.

Your Day-to-Day Responsibilities

• Collaborate closely with analysts, testers, developers, and operations in a self‑organized DevOps squad, translating business requirements into production‑ready system components.
• Develop software solutions for processing electronic payments using the Worldline Pay Front Office suite.
• Partner with Product Owners to negotiate integration requirements and ensure alignment with architectural goals.
• Design, configure, and install customer systems and provide ongoing support for deployments.
• Implement product or customer‑specific adaptations and extensions.
• Prepare comprehensive project documentation and maintain technical artifacts.
• Specify, prepare, and execute tests (unit, integration, and end‑to‑end) to ensure software quality.
• Provide analytical support during production incidents and participate in post‑incident reviews.
• Mentor and coach other team members; contribute to a collaborative, high‑performing team culture.
• Contribute to architectural and design improvements as part of a continuous improvement mindset.

Skills We Can’t Do Without

• University degree (Master’s or Bachelor’s) in Computer Science, Engineering, or a related field.
• Extensive experience in IT services and software development, preferably within electronic payments.
• Proficiency in object‑oriented programming in C++, relational databases, SQL, and data modeling.
• Familiarity with Agile methodologies; experience in a Scaled Agile or similar framework is a plus.
• Strong analytical skills and the ability to abstract and solve complex problems.
• High motivation, efficiency, and excellent communication skills, both verbal and written.
• Proficiency in English is mandatory.
• Proactive and self‑reliant, with a curious and open‑minded attitude.
• Team player capable of thriving in an international and matrix organizational environment.

Nice-to-Have

• Experience with cloud technologies (Google Cloud or AWS) and related certifications (Professional Cloud Developer/Engineer or similar).
• Knowledge of modern C++ (C++17, C++20 and beyond) and ongoing transition plans to newer standards.
• Experience with automated testing frameworks (e.g., GTest) and automated test systems (Unix/Bash/SQL/Python).
• Familiarity with messaging architectures, REST/JSON APIs, and payment protocol standards (ISO 8583/ISO 20022, Visa/MasterCard, etc.).
• Experience with databases (Oracle, PostgreSQL) and containerised development/delivery (Docker, WSL2, Linux).
• CI/CD pipelines, version control (Git), and experience with toolchains like Visual Studio Code, Sonar/GCov, and Jira/Confluence.
• Web and Backend technologies (JavaScript, TypeScript, Go).

Perks & Benefits

• Flextime & mobile working within Germany
• Company pension plan
• Individual training programs
• Job bike & various employee discounts
• Mobility and food subsidies
• Good public transport connections and free parking (location‑specific)
• Sustainable, international company culture
• Exposure to modern C++ development, cloud initiatives, and scalable architectures
• Diverse, internationally‑based team with mentorship and leadership opportunities
• Competitive compensation and comprehensive benefits with flexible work arrangements.

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.