Senior Principal Engineer, Core Banking Modernization (Dual‑Core)

Navy Federal Credit Union; Pensacola (FL); On-site; USD 180,000 - 240,000; Full time

Job summary

Navy Federal Credit Union leads a key Core Banking Modernization program, driving dual-core coexistence across on‑premise and cloud platforms to enable a complete migration to a new core banking system.

The Principal Engineer will provide enterprise technical leadership, define integration patterns, and govern data migration strategies while partnering with architecture, security, and transformation teams to ensure scalable, secure, and resilient solutions.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, Engineering, or related discipline, or equivalent.
• 15+ years of software engineering, solution architecture, and enterprise technology experience in Core Banking domain.
• Advanced knowledge of Core Banking platforms (e.g. Fiserv, FIS).
• Experience blending Core Banking with Retail Banking, Payments, Lending, or Products and Pricing (e.g. Zafin).
• Proven track record delivering large-scale modernization, migration, or digital transformation initiatives from mainframe to SaaS.
• Hands-on with cloud-native architectures, distributed systems, APIs (e.g. Mulesoft), event-driven solutions (Kafka), and enterprise integrations patterns.
• DevSecOps, CI/CD pipelines with Jenkins, automated testing, and modern software practices.
• Experience in highly regulated environments and strong security/compliance focus.
• Knowledge of mainframe modernization and data migration strategies.

Responsibilities

• Serve as principal technical authority for dual-core coexistence across banking platforms.
• Define design for Core Banking modernization coexistence (on premise and cloud) and data migration strategy.
• Define complete transaction lifecycle across origin to GL outcomes.
• Develop integration patterns for dual-core routing via APIs, messaging, events, and microservices.
• Manage cloud core platform with focus on data processing and reconciliation.
• Design data egress patterns to internal and external platforms.
• Establish ownership, routing, and servicing models for transactions and accounts.
• Engineer routing patterns for migration, shadow, and fallback scenarios.

Skills

Core banking

Cloud-native

API platforms

Event-driven

DevSecOps

CI/CD pipelines

Security & compliance

Distributed systems

Education

Bachelor's degree in CS/IT/Engineering

Tools

Mulesoft

Apache Kafka

Jenkins

Job description

Navy Federal Credit Union leads a key Core Banking Modernization program, driving dual-core coexistence across on‑premise and cloud platforms to enable a complete migration to a new core banking system.

The Principal Engineer will provide enterprise technical leadership, define integration patterns, and govern data migration strategies while partnering with architecture, security, and transformation teams to ensure scalable, secure, and resilient solutions.