Fiserv

Sr. Full Stack Software Engineer

Fiserv$140K — $210K *
Enterprise Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 6+ years of experience in full-stack enterprise web application development.
  • Strong proficiency in frontend technologies, specifically React.js, TypeScript, and JavaScript.
  • Expertise in backend development using Java and the Spring Boot framework.
  • Experience with containerization and deployment in Kubernetes environments.
  • Familiarity with relational databases, especially MySQL.
  • Skilled in designing and maintaining secure RESTful APIs.
  • Proven track record in Git, automated testing, and CI/CD pipeline management.

Responsibilities

  • Lead full-stack design and development of scalable payment applications.
  • Collaborate with cross-functional teams to gather requirements and translate into technical specifications.
  • Conduct rigorous testing and debugging to ensure high performance and reliability.
  • Maintain and refactor existing codebases while leading architectural design.
  • Mentor junior engineers and provide technical guidance.
  • Participate in on-call rotations and manage production support tasks.
  • Adapt responsibilities as needed to meet evolving team goals.

Benefits

  • Fuel Your Life program for overall well-being support.
  • Generous paid holidays and leave policies.
  • Access to no-cost mental health support resources.
  • Peer recognition program with redeemable rewards.
  • Opportunity for professional growth with training and mobility options.
  • Comprehensive insurance options available from day one.
  • Employee Stock Purchase Plan for retirement planning.
  • Tuition assistance and reimbursement program.
  • Paid parental, caregiver, and military leave.
Full Job Description
Job Title
Sr. Full Stack Software Engineer

About your role:

Clover is a global leader in financial services technology, dedicated to building the smart point-of-sale (POS) and digital commerce networks that move money securely for millions of businesses daily. As a Senior Full Stack Software Engineer (Payments), you will join a high-performing product engineering team responsible for creating, enhancing, and maintaining our next-generation web applications, storefronts, and e-commerce APIs. In this role, you will work across the full stack to build and operate complex payment applications-including our Virtual Terminal, Invoicing, and hosted checkout tools-ensuring millions of global transactions are processed seamlessly every day.

What you'll do:
  • Lead the full-stack design, development, and implementation of scalable software applications and user interfaces to support Clover's payment processing ecosystem.
  • Partner deeply with cross-functional product, design, and architecture teams to gather complex requirements and translate business goals into intuitive frontend workflows and clean backend technical specifications.
  • Perform rigorous coding, testing, and proactive debugging across both frontend and backend components to guarantee optimal latency, responsiveness, and transaction reliability.
  • Maintain, refactor, and evolve existing full-stack payment codebases while leading architectural design and peer code review processes to uphold elite engineering standards.
  • Mentor engineers and emerging technical leaders, providing technical guidance to enhance the collective capabilities and product-thinking of the development team.
  • Participate in regular on-call and release management rotations to provide production support services and maintain high system availability.
  • Responsibilities listed are not intended to be all-inclusive and may be modified as necessary.


Experience you'll need to have:
  • Core Engineering Foundations: 6+ years of professional software development experience delivering production-grade, full-stack enterprise web applications within a product-driven environment.
  • Frontend Excellence: Strong hands-on experience and deep proficiency building highly accessible, responsive web interfaces using React.js, TypeScript, and JavaScript.
  • Java Mastery: Strong backend coding skills within the JVM ecosystem, utilizing Java and the Spring Boot framework to design, build, and scale distributed microservices.
  • Orchestration & Scale: Practical experience developing, containerizing, and deploying workloads within a Kubernetes (K8s) environment.
  • Data Layer Architecture: Solid experience working with relational databases, specifically MySQL or similar relational engines.
  • Platform Mindset: Ability to generalize complex business processes and build simple, flexible, and extensible core domain services that cleanly support multiple consumer products.
  • API Design: Deep expertise in designing, versioning, and maintaining secure, performant RESTful APIs for web and mobile clients.
  • DevOps Maturity: Strong proficiency with Git, automated testing frameworks, and managing automated CI/CD pipelines to ensure release stability.


Experience that would be great to have:
  • Payment Domain Expertise: Direct experience within the fintech, POS, banking, or e-commerce industries (familiarity with core checkout or payment transaction lifecycles is a massive plus).
  • System Hardening: Foundational understanding of web security protocols, network communication protection, data tokenization, and core cryptography.
  • Full-Stack Versatility: Comfortable working across multiple parts of the application stack and adjusting quickly in an iterative model where specifications and design layouts constantly evolve.


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


#LI-SH2

Salary Range
$140,000.00 - $210,000.00

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.

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).

About Fiserv

CashEdge(R) provides infrastructure that global financial institutions rely on to extend their online channels and enhance customer profitability. CashEdge delivers secure Online Money Movement and Advanced Account Aggregation platforms that power specialized retail banking and advisor applications. These proven solutions enable CashEdge's clients to create compelling online offerings that attract customers, generate revenues, and reduce costs. CashEdge serves top-tier financial institutions around the world. Clients and partners include Vanguard, RBC Financial Group, CIBC, Yahoo! Finance, Digital Insight, First Data, TD Canada Trust, NYCE, Laurentian Bank, Financial Fusion and Corillian. CashEdge has offices in New York and Silicon Valley.

Fiserv Careers

Join the Fiserv team today and be part of a dynamic company known for innovation, leadership, and a commitment to the professional growth of its employees. At Fiserv, we offer more than just job opportunities; we provide a platform where skills are honed, leadership is cultivated, and career aspirations are achieved. Work You’ll Do At Fiserv, we are constantly on the lookout for talented individuals eager to thrive in a culture that fosters growth and diversity. Our team is composed of professionals who lead the way in financial services technology. By joining us, you will collaborate with some of the brightest minds in the industry, working together to solve complex challenges and deliver innovative solutions that impact millions of people every day. Explore Our Job Opportunities Whether you're seeking an entry-level position or a more senior role, Fiserv offers a range of career paths in areas such as software development, project management, financial analysis, and client services. Our hiring process is designed to identify and attract individuals who are not only technically proficient but who also embody our values of integrity and responsibility. Internship Programs Kickstart your career with a Fiserv internship. Our internships provide invaluable workplace experience and networking opportunities that often lead to full-time employment. As an intern, you’ll gain hands-on experience while working on meaningful projects that directly contribute to the company’s goals. Benefits and Culture Fiserv is committed to the well-being and continuous development of our employees. We offer competitive benefits including health, dental, and vision insurance, as well as opportunities for professional development through leadership training and diversity programs. Our culture is one of inclusion, where every team member is valued and has the opportunity to contribute to our success. Career Growth and Development We believe in nurturing the potential of our employees through career development initiatives and continuous learning opportunities. At Fiserv, you will find a supportive environment where you can grow your career through on-the-job experiences, mentoring, and formal training. Stay Connected Join Our Team Search open positions that match your skills and interests. We look for passionate, curious, creative, and solution-driven team players. Start your journey with Fiserv today and help shape the future of financial services. Keep Up to Date Stay ahead with career tips, insider perspectives, and industry-leading insights you can put to use today—all from the people who work here. Job Alert Emails Personalize your subscription to receive job alerts, latest news, and insider tips tailored to your preferences. Discover the exciting and rewarding career opportunities that await at Fiserv. Explore, innovate, and grow with Fiserv. Let your career journey begin here, where you can make a real difference in the world of finance.
Learn more about Fiserv
Size
44,000 employees
Market Cap
$63.4 billion
Industry
Net Income
$958 million
Founded
1984
5 Year Trend
+24.1%
Revenue
$14.8 billion
NASDAQ

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