Software Development - Sr. Professional II

Fiserv • King of Prussia, PA

5d

About The Position

Fiserv's Finxact is an enterprise-class, cloud-native banking platform and transaction-processing engine built on open APIs. It enables banks, fintech companies, and embedded-finance providers to launch and operate financial products with agility, scalability, and reliability.

As a Software Engineer, you will design and develop scalable backend services, contribute to database modernization and migration initiatives, and solve complex technical problems across the platform. Backend services are primarily written in Go, but engineers with strong expertise in another modern programming language are welcome if they are willing to become proficient in Go.

The role requires valid and unrestricted U.S. work authorization. Candidates with temporary visas or who require sponsorship now or in the future will not be considered. The role cannot be performed in Colorado, California, the District of Columbia, Hawaii, Illinois, Massachusetts, Maryland, Minnesota, New Jersey, New York, Nevada, Rhode Island, Vermont, Virginia, Maine, or Washington.

Requirements

• At least 4 years of professional software-engineering experience.
• Experience developing production backend systems in Go or another modern programming language, and ability and willingness to become productive in Go.
• At least 3 years of experience with relational databases, including database design, optimization, and data-migration techniques.
• Strong PostgreSQL experience or comparable experience with another enterprise relational database.
• Experience with query optimization, indexing, data modeling, partitioning, triggers, and stored procedures.
• Experience operating applications or databases in a cloud environment.
• Practical experience using AI-assisted development tools and independently validating generated output.
• Strong analytical, troubleshooting, communication, and collaboration skills.
• Passion for technology, continuous learning, and solving complex engineering problems.
• Bachelor's degree in computer science, engineering, or a related field, or an equivalent combination of education, professional experience, and/or military experience.
• Currently possess valid and unrestricted U.S. work authorization; candidates requiring sponsorship now or in the future are not eligible.

Nice To Haves

• Production experience developing backend services in Go.
• PostgreSQL experience, including PL/pgSQL, replication, high availability, or performance tuning.
• Experience with cloud-native architectures, containers, Kubernetes, microservices, or distributed systems.
• Experience with change data capture, database replication, or large-scale data migrations.
• Experience with performance and load testing.
• Experience with specification-driven development, including translating requirements into technical specifications, implementation plans, and automated tests.

Responsibilities

• Design, develop, test, and maintain scalable backend services and APIs.
• Lead or contribute to database migration and modernization projects.
• Analyze existing applications and databases to identify dependencies, risks, and technical requirements.
• Design and optimize PostgreSQL schemas, queries, indexes, partitions, triggers, and stored procedures.
• Collaborate with engineers, architects, product teams, and other stakeholders to define and deliver technical solutions.
• Ensure data integrity, security, reliability, and performance throughout software development and database migration processes.
• Use AI-assisted development tools responsibly to improve design, implementation, testing, documentation, and troubleshooting.
• Participate in code reviews, architectural discussions, and production support, and mentor other engineers.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior