Backend Application Architect

Fiserv is a global leader in financial technology, empowering millions of businesses worldwide through Clover's smart point-of-sale (POS) and digital omni-commerce platform. As a Backend Application Architect, you will serve as a technical leader driving the architectural vision, strategy, and evolution of our core enterprise backend systems. In this role, you will architect resilient, high-volume transactional platforms and partner across product and engineering leadership to execute our strategic roadmap-accelerating international expansions across APAC, Japan, and the EU, eliminating backend dependencies to maximize feature velocity, and pioneering AI-driven agentic commerce integrations.

What you'll do:

• Drive the strategic architectural vision, technical roadmaps, and modernization of high-throughput, low-latency microservices and event-driven backend platforms.
• Design and govern scalable API ecosystems, data models, caching strategies, and storage solutions across relational and NoSQL engines to eliminate backend dependencies and maximize engineering velocity.
• Architect resilient backend services that support international expansion initiatives (APAC, Japan, EU) and enable cutting-edge AI-driven agentic commerce workflows.
• Establish non-functional requirements (NFRs) and architectural standards for performance, security, fault tolerance, zero-downtime deployments, and platform observability.
• Lead cross-team design reviews, evaluate emerging technologies, and de-risk high-stakes initiatives in partnership with Product, Business, and Executive leadership.
• Mentor and elevate Tech Leads and Senior Engineers across multiple scrum teams to foster a culture of technical excellence and engineering rigor.
• Responsibilities listed are not intended to be all-inclusive and may be modified as necessary.

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related technical field.
• 12+ years of hands-on professional software engineering experience designing, building, and operating enterprise backend systems in Java environments.
• Deep mastery of the JVM ecosystem, Spring Boot, microservices architecture patterns (CQRS, Saga, Circuit Breaker), and distributed messaging systems (Kafka, Google Pub/Sub, RabbitMQ).
• Advanced proficiency in data architecture, schema design, and transaction management across both SQL (MySQL, PostgreSQL) and NoSQL (Cassandra, MongoDB, Redis) databases.
• Practical expertise with cloud-native platforms (GCP, AWS, or Azure), containerization (Docker, Kubernetes), and automated CI/CD deployment models.
• Proven track record in RESTful API design, OpenAPI/Swagger specifications, API security standards (OAuth2, JWT, mTLS), and JVM performance/concurrency tuning under heavy transaction loads., * Prior experience architecting high-concurrency payment gateways, POS ecosystems, merchant services, digital storefronts, or global checkout pipelines.
• Familiarity with polyglot environments and secondary languages (Python, Go, Node.js, Next.js) for tooling, automation, or rapid prototyping.
• Hands-on experience with event-sourcing engines, serverless compute (Google Cloud Functions, AWS Lambda/Kinesis), or reactive frameworks (Spring WebFlux, RxJava).
• Strong understanding of PCI-DSS compliance, data encryption standards, and enterprise vulnerability management.
• Experience designing backend architectures that integrate Generative AI models, LLMs, or agentic commerce AI workflows via REST APIs and event-driven messaging.

• 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

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Salary Range

$160,000.00 - $240,000.00

These pay ranges apply to employees in Sunnyvale, California. Pay ranges for employees in other states may differ.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company's sole discretion.

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.