Calling all innovators – find your future at Fiserv.

We’re Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day – quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we’re involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

Senior Full-Stack Software Developer (PHP, MySQL, AWS Cloud) - m/f/d

What does a successful Software Full-Stack Developer do:

You will enhance and maintain our web application which supports multiple selling brands (e.g., cashforless.de) and partner portals, hosted on AWS. Working closely with the business owner and stakeholders, you will translate requirements into robust, scalable solutions, drive implementation across the full delivery lifecycle within a Scrum framework, and ensure high availability, operational reliability and security compliance.

What you will do:

Collaborate with business stakeholders to clarify requirements, map application business processes, and translate needs into well‑defined backlog items
Propose solution options and drive architecture and design decisions focused on scalability, performance and security, and ensure features are testable, implementable and aligned with the overall architecture
Design, develop and maintain modular server‑side PHP components and user‑facing front‑end features using the Laminas framework
Create and consume RESTful APIs for efficient data exchange and integration with other systems
Design and optimize MySQL schemas, queries and indexing for reliable data performance
Write automated tests, perform code reviews and follow best practices for maintainable, tested code
Troubleshoot production issues, perform root-cause analysis and implement permanent fixes

What you need to have:

Bachelor’s or Master’s degree in Computer Science or related field, and/or proven work experience as a PHP Full Stack Developer with minimum 5 years
Strong knowledge of Laminas, Symfony, PHP, MySQL, and RESTful API development
Experience in security remediation practices for the OWASP Top 10 security risks
Proficiency in front-end technologies such as HTML, CSS, JavaScript, and optionally experience with a front-end framework (e.g. Angular)
Strong software design and architecture skills, familiar with typical design patterns and domain-driven design concepts
Experience in building and deploying applications on AWS using containerization (Docker) and orchestration (Kubernetes, ArgoCD)
Excellent analytical and problem-solving skills, customer-centric mindset, as well as strong communication and collaboration skills with cross-functional teams
Hands-on experience with Agile methodologies and Scrum practices
German fluency (C1/native) and English (B2 or higher) are required.

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Thank you for considering employment with Fiserv. Please:

Apply using your legal name
Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Diversity and Inclusion:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.