Senior Implementation Engineer

Fiserv

Senior Implementation Engineer delivering solutions for complex business challenges using Finxact Core APIs at Fiserv. Collaborating with clients and internal teams to drive successful outcomes across implementation lifecycle.

Posted 6/2/2026full-timeJacksonville • Florida • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

About the role

Key responsibilities & impact

Build and maintain deep expertise in Finxact technology and architecture to develop, manage, and support solutions that use Finxact Core APIs and related technical features.
Partner with clients to solve complex business problems, troubleshoot issues, provide guidance on integration models and workflows, and advise on integrating third-party vendors into the Finxact ecosystem.
Communicate complex technical concepts clearly to clients, ecosystem partners, and internal teams to support product adoption and serve as a subject matter expert on APIs and integration points.
Support end-to-end client implementations by participating in technical design, analyzing application, ecosystem, people, process, and technology requirements, and providing training, onboarding, product feedback, and client support.
Develop and code core functionality and interfaces, participate in test execution and documentation, and assist with deployment activities for client implementations.

Requirements

What you’ll need

6+ years of professional experience in API and software development.
2+ years of programming experience in functional, imperative, or object-oriented languages.
1+ role supporting clients directly in a financial software or technical implementation environment.
Bachelor’s degree in computer science, engineering, or a related field, or 1 equivalent combination of education, work, and military experience.
1+ year of experience in the financial services industry.
1+ year of experience programming in Golang.
3+ demonstrated strengths across communication, collaboration, problem-solving, and accountability.

Benefits

Comp & perks

Health insurance
401(k) matching
Flexible work hours
Paid time off
Professional development opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

API developmentsoftware developmentGolangfunctional programmingimperative programmingobject-oriented programmingtechnical designtest executiondocumentationclient implementations

Soft Skills

communicationcollaborationproblem-solvingaccountability