Senior Full Stack Software Engineer
Fiserv· Fintech / Payments· Oct 20, 2026 · 8d ago
Berkeley Heights New Jersey
In office
Full-time
Senior
$128K–$216K
6+ years exp
Job description
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 Engineer
About your role:
At Fiserv, we are dedicated to transforming financial services technology to benefit our clients. As a Senior Full Stack Software Engineer (Client-Side Server-Side ), you will play a critical role in designing, developing, and maintaining high-quality software applications. You will work with cross-functional teams to deliver solutions that align with our business goals and client needs.
You will be a part of a team that is building the Merchants Onboarding & Client Implementations platforms.
You will have an opportunity to work effectively on complex projects independently and within a collaborative team-oriented environment. If you’re a self-motivated engineering lead with proven track record managing and automating operations of applications, we want to talk to you!
What you ll do:
Lead the design, development, and implementation of software applications to support Fiserv s business goals.
Collaborate with cross-functional teams to gather requirements and translate them into technical specifications.
Perform coding, testing, and debugging of applications to ensure optimal performance and reliability.
Maintain and improve existing codebases and lead peer review processes.
Mentor junior developers and provide technical guidance to enhance team capabilities.
Experience you ll need to have:
6 years of experience in software development
3 years of experience in Java, C, C#, C , or similar programming languages
3 years of experience in SQL databases
3 years of experience in AWS, Azure, or GCP services
3 years of experience with CI/CD pipelines and DevOps practices
3 years of experience with Agile methodologies
1 years of experience with LLM/engine and the ability demonstrate steps that were executed for a real use case
Bachelor s degree in computer science, Information Technology, Information Systems, or a related field (or foreign equivalent degree) or equivalent work experience
Experience that would be great to have:
Experience in the financial services industry
Important information about this role:
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
This is a full-time, direct-hire position, and no contract options for unsolicited agency submissions will be considered
All offers of employment are contingent on standard background checks. Fiserv and certain of its affiliated companies are federal, state, and/or local government contractors. Should this position support a Federal Government contract, now or in the future, the successful candidate will be subject to a background check conducted by the U.S. Government to determine eligibility and suitability for federal contract employment for public trust or sensitive positions. Positions that support state and/or local contracts also may require additional background checks to determine eligibility and suitability
Salary Range
$128,000.00 - $216,000.00
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.
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