Senior Core Banking Engineer

The Role

Senior Engineer with deep experience on the Fiserv DNA core banking platform to design, build, and support the integrations, extensions, and automation that keep our core operations running. The selected person will be a technical authority on Fiserv DNA, partnering with product, operations, security, and vendor teams to deliver reliable, compliant solutions that improve the customer and employee experience.

Responsibilities

- Design, develop, and maintain integrations between Fiserv DNA and surrounding systems (digital banking, card processing, payments, lending, CRM, data platforms) using APIs, web services, and file-based interfaces.

- Lead technical delivery of DNA-related projects, including upgrades, releases, conversions, and new product rollouts.

- Build and maintain automation, batch processes, reports, and data extracts to support operations, finance, risk, and compliance.

- Analyze and resolve complex production issues, perform root-cause analysis, and drive long-term fixes.

- Partner with Fiserv and other third-party vendors on enhancements, defects, and roadmap planning.

- Establish engineering standards for code quality, testing, release management, and documentation.

- Ensure solutions comply with regulatory, security, and audit requirements, as applicable.

- Mentor internal and cross-functional teams through code reviews, design guidance, best practices, and knowledge sharing.

- Contribute to architecture decisions, capacity planning, and disaster recovery/business continuity testing for core systems.

Required Qualifications

-6+ years of software engineering experience, including 3+ years working with Fiserv DNA (or comparable core banking platforms) in a financial institution in banking or credit union.

- Expert on Fiserv DNA core modules and data structures (e.g., customer/membership, deposits, loans, general ledger, transactions).

- Hands-on experience with DNA integration methods, including APIs, web services, and batch/file processing.

- Proficiency in SQL and relational databases (Oracle preferred), including query tuning and data analysis.

- Proficiency in at least one programming language and scripting.

- Experience with REST/SOAP, JSON/XML, and messaging or middleware patterns.

- Expert understanding of banking operations, payment flows (ACH, wire, card, real-time payments), and core accounting concepts.

- Experience with version control, CI/CD pipelines, and structured change/release management.

- Strong troubleshooting, analytical, and communication skills, with the ability to explain technical issues to non-technical stakeholders.

Preferred Qualifications

- Experience with DNA upgrades, conversions, or mergers/acquisitions.

- Familiarity with Fiserv Developer Studio/APIs and related Fiserv digital and payments products.

- Experience with cloud platforms and data/analytics tooling.

- Knowledge of secure coding practices, identity/access management, and audit-ready documentation.

- Experience in Agile or hybrid delivery environments.

- Bachelor’s degree in computer science, Information Systems, or equivalent experience.

Core Competencies

- Technical ownership and judgment - Own outcomes from design through production support, and make sound, accountable decisions on complex, high-risk systems.

- Attention to detail - Deliver accurate, audit-ready work in regulated zero or minimal error systems and environments.

- Communication – Clear written and verbal communication, with technical and non-technical audiences.

- Vendor and stakeholder management - Build trusted relationships and hold vendors and partners accountable for commitments.

- Mentorship and collaboration - Coach other team members and cross functional teams, share knowledge, and work effectively across teams.

- Problem solving and critical thinking - Break down complex problems, use data to find root cause, and drive lasting fixes.