Senior Software Engineer - IT Banking & Payment Operations

Düsseldorf, Nordrhein-Westfalen, 40213 Unbefristet Vollzeit Your new team:

At auxmoney, we are shaping the future of FinTech with innovation, technology and a passion for seamless financial processes. As a Senior Software Engineer (m/f/d) in the Banking & Payment Operations team, you’ll be part of a cross-functional, agile team that ensures smooth and secure loan accounting and cash flows between investors and borrowers.

You will collaborate closely with product and business teams, share your expertise with peers, and continuously raise the bar for code quality and technical excellence. If you are passionate about clean code, smart solutions and building software that matters, this is your opportunity to make a difference. What you can expect:

• Shape the Future of FinTech: Work in an agile, cross-functional team to develop scalable and secure financial solutions.
• Architecture & System Design: Identify and address architectural limitations, make pragmatic trade-offs, and help evolve systems toward scalability, reliability, and long-term maintainability.
• Engineering Quality: Build solutions that are secure, scalable, extensible, and cost-efficient while maintaining high coding and documentation standards.
• Execution & Delivery: Break down complex initiatives into manageable workstreams and deliver incremental value through iterative development.
• Innovate with Modern Architecture: Contribute to our service-oriented architecture and help build reliable, event-driven services using Kafka.
• Knowledge Sharing & Engineering Influence: Contribute to a culture of engineering excellence by sharing knowledge, improving team practices, and promoting high standards for software development.
• Collaboration & Problem Solving: Work closely with cross-functional stakeholders, actively contribute to design reviews, and address root causes of recurring technical challenges.
• Ownership & Mentorship: Take responsibility for challenging projects and guide team members through technical mentoring and hands-on support.
• Strategic Thinking & Growth Mindset: Balance short-term delivery with long-term system sustainability and continuously look for opportunities to improve technology, processes, and team effectiveness.
• Understand the Business: Gain deep insights into non-technical, business-related processes within a leading FinTech company and help shape solutions that drive real impact.
• Maximum Flexibility: Work remotely from anywhere in Germany, with only two office visits per year required.

• Passionate Developer: You enjoy solving complex problems, writing high-quality software, and contributing ideas in an agile environment.
• Backend Expertise: Several years of hands-on experience with object-oriented programming (preferably PHP) and MySQL databases.
• Cloud & Containerization Know-How: Experience with Kubernetes, Docker and CI/CD pipelines for seamless deployment and scalability.
• Event-Driven Architecture: Familiarity with Kafka and event-driven or service-oriented architectures is a plus.
• Testing Enthusiast: Knowledge of PHPUnit or Cypress to ensure robust software quality.
• Monitoring & Performance Optimization: Experience with New Relic or similar tools to keep services running smoothly.
• Version Control Savvy: Proficient in Git, ensuring efficient collaboration and clean versioning practices.
• Finance Enthusiast: Interest in financial systems and processes; experience in FinTech development is a plus.
• Product-Oriented Mindset: A strong focus on building solutions that deliver measurable value for users and business outcomes.
• Team & Communication Skills: Strong communication skills in English (German is a plus) and a collaborative approach, with the ability to work effectively in cross-functional teams and contribute to a supportive engineering culture.

• Flexibility for Your Lifestyle: Enjoy family-friendly working hours and a generous home office policy, allowing you to stay agile and flexible in any situation.
• Ergonomic Work Environment: For your office days, we provide ergonomic workstations that offer you a comfortable and healthy workspace.
• Independent Work: With short decision-making paths, we enable you to work autonomously and actively contribute your ideas - we provide space for you to take on responsibility.
• Grow with Us: Unlock your potential with numerous opportunities for growth and development, along with an annual development budget to help you achieve your professional and personal goals.
• Team Spirit: Team spirit is important to us - we regularly host events and parties where fun is guaranteed.
• Mobility Your Way: Whether you prefer a train ticket or parking - we support your choice of preferred mobility.
• Stay Active: Keep fit with a discounted membership at Fitness First or Urban Sports Club, or use our in-house fitness room to stay active after work and enhance your work-life balance.
• Secure Your Future: Think about your future - we offer subsidies for company pension plans so you can plan long-term with us.
• Tailored Benefits: We consider your personal life situation - whether you’re a parent or love to travel, we offer customized benefits to suit your lifestyle.

You are passionate about agile work and would like to create every day differently? Then you are exactly right with us! We are auxmoney - one of the most successful Fintech companies in Germany and the largest credit marketplace in Continental Europe. Private and institutional investors invest directly in pre-approved loans via auxmoney.

As a company, we combine the start-up mentality with the security of a successful Grown-Up. Together we work at our locations in Düsseldorf, Budapest and Dublin.

Thanks to flat hierarchies and a diversity of creative and development opportunities, you can achieve excellent results on your own responsibility and work on exciting projects. You can simplify processes and products and thus actively shape auxmoney as a company in a sustainable manner. Regardless of whether you are an intern or a manager: everyone makes a valuable contribution at auxmoney.

You are also welcome to visit us on our social media channels to gain a better impression of us.