Sr Software Engineer | King of Prussia, PA, USA

Sr Software Engineer 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 Sr Software Engineer About your role: We're looking for a Senior Java Software Developer passionate about working as a member of a software product development team to deliver modern, complex web applications. You will design, build, monitor, and maintain backend services that power a complex, distributed, web-based software product. As a Senior Software Developer, you'll provide technical direction and work with the team to iteratively deliver production-grade microservices. You will help shape the technical direction and collaborate with team members to evolve our microservice architecture in a scalable Docker/Kubernetes environment that maintains a strong focus on reliability, security, and performance. What you'll do:

• Design, develop, test, deploy, and maintain backend services and APIs for a microservice architecture.
• Demonstrate the ability to implement modern architectural designs in software development.
• Mentor the team in building resilient, observable, and secure services (e.g., health checks, structured logging, metrics, tracing, and alerting).
• Implement data and integration patterns such as asynchronous messaging, event-driven workflows, and independent service-to-service communication.
• Develop automated unit and integration tests to confirm the expected behavior of software during the build process.
• Develop containerized workloads and deployment artifacts; contribute to Kubernetes deployments, configuration, and runtime troubleshooting.
• Collaborate with Product, Design, other Engineering teams, and product stakeholders to translate requirements into technical solutions and deliver iteratively.
• Improve developer velocity by contributing to CI/CD pipelines, automation, and engineering standards (testing, code review, documentation).
• Mentor engineers and raise the quality bar through design reviews, technical guidance, and shared ownership of architecture decisions.
• Actively participate in Scrum Agile events and provide your opinion and guidance as a technical professional during team discussions.
• Responsibilities listed are not intended to be all-inclusive and may be modified as necessary. Experience you'll need to have:
• Bachelor's degree in computer science, engineering or related field.
• 7+ years of professional experience developing software and delivering production systems with a member of a product development team.
• Proficient in building Java (Spring Boot) RESTful APIs and/or gRPC services.
• Working knowledge with software design patterns and architectural principals, including application scaling, distributed data systems and asynchronous communications.
• Experience designing and developing microservices, including service decomposition, API design, and backwards-compatible change management.
• Experience with containerization and orchestration (Docker and Kubernetes).
• Experience with secure coding practices and secrets management.
• Experience with Agile, CI/CD systems and modern SDLC practices (code reviews, automated testing, and incremental delivery).
• Strong troubleshooting and root-cause analysis skills across distributed systems, networking, and Linux-based environments.
• Strong communication skills, including writing technical documentation, participating in Agile events, and collaborating effectively with team members. Experience that would be great to have:
• Experience with distributed systems, microservices architectures (Docker/Kubernetes), and working in a Linux-based environment.
• Experience with data stores commonly used in distributed systems (e.g., PostgreSQL/MySQL, Redis, Kafka) and associated consistency and scaling trade-offs.
• Experience with observability stacks (e.g., OpenTelemetry, Prometheus/Grafana, ELK/EFK) and building actionable operational dashboards.
• Experience with Kubernetes ecosystems and tools (e.g., Helm, ArgoCD, Kustomize) and automated CI/CD build pipelines (GitLab).
• Experience hardening systems for security and compliance (threat modeling, secrets management, secure coding practices).
• Experience improving performance and reliability through load testing, capacity planning, and resiliency patterns (timeouts, retries, circuit breakers). How you'll work:
• This role is on-site Monday through Friday. Fiserv considers in-person collaboration to be an essential part of this role as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.
• This role requires use of a computer and audio equipment.

Benefits at

Fiserv:

• Fuel Your Life program to support your physical, financial, social, and emotional well-being
• Paid holidays and generous time away policies
• No-cost mental health support through Employee Assistance Programs
• Living Proof program to recognize your peers' extra effort with points redeemable for rewards
• Eight Employee Resource Groups to foster a collaborative culture and expand your network
• Unparalleled professional growth with training, development, and internal mobility opportunities
• Medical, dental, vision, life, and disability insurance options available from day one
• Retirement planning and discounted shares with the Employee Stock Purchase Plan
• Tuition assistance and reimbursement program
• Paid parental, caregiver, and military leave This role is not eligible to be performed in Colorado, California, District of Columbia, Hawaii, Illinois, Massachusetts, Maryland, Minnesota, New Jersey, New York, Nevada, Rhode Island or Washington.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran. Please note that salary ranges provided for this role on external job boards are salary estimates made by outside parties and may not be accurate. 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

Equal Opportunity:

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. If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact AskHR.US@fiserv.com. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv's Disability Accommodation Policy for additional information.

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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.

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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.