Demo

Senior Full Stack Java Developer

Fiserv
Berkeley, NJ Full Time
POSTED ON 1/11/2026
AVAILABLE BEFORE 2/17/2026
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 Java Developer

Important Info About This Role

  • We’re better together! This role is fully on-site
  • This is a full-time, direct-hire position, and no contract options or unsolicited agency submissions will be considered
  • You must currently possess valid and unrestricted U.S. work authorization to be considered for this role. Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or TN, or any candidate requiring sponsorship, now or in the future, will not be considered for this role

What does a successful Senior Software Developer – Full stack do at Fiserv?

We design and deliver scalable, secure full‑stack software that advances financial services by leading technical direction, building and maintaining high‑quality front‑ and back‑end applications, collaborating across teams to solve client problems, and mentoring colleagues to raise the team’s performance.

What You Will Do

  • Lead end-to-end design, development and implementation of software that meets business and client needs by partnering with cross‑functional teams to gather requirements and translate them into technical specifications within Agile delivery cycles.
  • Write, test and debug production‑grade front‑end and back‑end code, and deliver reliable, high‑quality features.
  • Maintain and improve existing codebases, drive peer reviews and enforce coding standards to ensure long‑term maintainability and quality.
  • Implement, operate and support CI/CD and DevOps practices to automate builds, tests and deployments and accelerate reliable delivery.
  • Mentor and coach junior developers, share technical guidance and best practices, and help the team continuously raise its performance.

What You Will Need To Have

  • 8 years building full‑stack applications with Java / J2EE and front‑end technologies such as Struts, JSP and React.
  • 5 years designing, querying and optimizing SQL databases and data integrations.
  • 2 years working with cloud platforms (AWS, Azure or GCP) combined with 2 years implementing CI/CD pipelines and DevOps automation for scalable, reliable delivery.
  • 5 years contributing in Agile teams, collaborating across functions to plan, deliver and iterate on features.

What Would Be Nice To Have

  • Experience in the financial services industry.

Salary Range

$110,000.00 - $186,000.00

These pay ranges apply to employees in New Jersey and New York. 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).

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.

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.

Salary : $110,000 - $186,000

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