Software Development - Sr. Professional II

Fiserv • Omaha, NE

3d

About The Position

Finxact, a Fiserv company, provides an enterprise-class, cloud-native banking platform and transaction-processing engine built on open APIs. Its platform helps banks, fintech companies, and embedded-finance providers launch and operate financial products. The Software Engineer will design and develop scalable backend services, contribute to database modernization and migration initiatives, and address complex technical problems across the platform. Backend services are primarily written in Go, and engineers with strong experience in another modern programming language are welcome if they are willing to become proficient in Go.

The position involves developing and maintaining backend services and APIs, planning and carrying out database migrations, optimizing PostgreSQL databases, and collaborating with technical and product stakeholders. Engineers are expected to support the integrity, security, reliability, and performance of software and data, use AI-assisted development tools responsibly, participate in reviews and architectural discussions, provide production support, and mentor other engineers.

Applicants must have valid and unrestricted U.S. work authorization. The role is not eligible to 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

• 4 or more years of professional software-engineering experience.
• Experience developing production backend systems in Go or another modern programming language.
• Ability and willingness to become productive in Go.
• 3 or more 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.
• 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 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.
• Mentor other engineers.

What This Job Offers

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