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Senior Golang Developer; Core

Job in Jacksonville, Duval County, Florida, 32201, USA
Listing for: BentoBox
Full Time position
Listed on 2026-09-05
Job specializations:
  • Software Development
    Software Engineer, Backend Developer, Cloud Engineer - Software, DevOps
Job Description & How to Apply Below
Position: Senior Golang Developer (Core Application)

Software Development Engineering - Advisor II

Calling all innovators – find your future '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.

Core Application – Senior Golang Developer

As a Senior Developer on the Core Application team, you will be working in an application design and development leadership role on the Finxact Core as a Service platform, building backend services and APIs in Golang. You will be creating new software and enhancing existing software to provide banking and financial institution services. Additionally, you will…

Work with business analysts, engineers, and other system users to understand and implement their application requirements

Have the opportunity to work with partners to understand their implementations and gain a breadth of knowledge in cloud-based SaaS implementations and technologies

Provide quality software, improve test coverage and the overall quality of the systems

Provide leadership to other developers on the team and assist them in designing solutions, understanding the principles of financial services software and programming best-practices.

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.

Must be willing to work under deadlines and be detail oriented

Required qualifications:

6+ years of experience in software development

3+ years of experience in Golang, Java, C, C#, C++, or similar programming languages

3+ years of experience in SQL databases

3+ years of experience in RESTful services, Swagger, Json data interchange, and GIT.

3+ years of experience with Agile methodologies

6+ years of an equivalent combination of educational background, related experience, and/or military experience

Experience that would be great to have:

Industry experience in software application design and development for payments such as ACH, Fedwire, RTP, cards, or other iso
20022/iso
8583 related payment types.

Familiarity with Golang

AI driven development practices

Microservices development strategies and best practices

Sponsorship:

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.

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, Vermont, Virginia, Maine 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…

Position Requirements
10+ Years work experience
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