Principal Application Engineer – Core Banking Platform

Navy Federal Credit Union

. Serve as the principal technical authority for dual-core coexistence across banking platforms .

Posted 9/23/2026full-timeUnited StatesLead💰 $128,300 - $187,500 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Core Banking modernization, including dual-core coexistence, data migration strategies, and cloud-native architectures. Proficient in designing integration patterns, ensuring transaction integrity, and leading large-scale digital transformation initiatives within regulated environments.

Highest-signal resume keywords

Core Banking ModernizationCloud-Native ArchitecturesAPI Platforms (Mulesoft)DevSecOps and CI/CD PipelinesAutomated Testing Frameworks

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringSolution ArchitectureData MigrationIntegration Design PatternsTransaction Lifecycle ManagementEvent-Driven ArchitecturesMicroservicesSecurity and Compliance PrinciplesApplication ModernizationLegacy Migration Strategies

Soft Skills

MentoringCollaborationFacilitation

Tools & Technologies

JenkinsApache KafkaOracle Cloud TechnologiesAzureHybrid Cloud Architectures

Industry Keywords

Core BankingRetail BankingPaymentsLendingDigital Transformation

Tech Stack

Tools & technologies

ApacheAzureCloudDistributed SystemsJenkinsKafkaMicroservicesOpen SourceOracle

About the role

Key responsibilities & impact

Serve as the principal technical authority for dual-core coexistence across banking platforms
Design solutions and applications for the Core Banking modernization program's on-premise and cloud coexistence model and data migration/integration strategy
Define the complete transaction lifecycle from originating channel through transport, ingestion, validation, decomposition, state resolution, routing, core processing, reconciliation, settlement, accounting, and General Ledger outcomes
Develop integration design patterns for dual-core routing and data ingress using APIs, messaging services, event-driven architectures, and microservices
Manage cloud core platform mechanics, focusing on data processing and reconciliation
Develop integration design patterns for data egress from core banking platforms to internal and external platforms
Define and govern ownership, account-location, servicing-authority, and routing models
Engineer routing patterns for single-core, cross-core, split-post, shadow, replay, migration, and fallback banking transaction scenarios
Define controls preserving transaction atomicity, ordering, idempotency, balance integrity, posting completeness, and financial finality
Lead adoption of AI-enabled software engineering capabilities, including code generation, test case creation, impact analysis, and documentation generation
Design AI-driven observability and operational intelligence capabilities
Design repeatable migration patterns for data migration, synchronization, validation, cutover, rollback, stabilization, and legacy retirement
Establish development standards, coding practices, security controls, and quality gates
Collaborate with infrastructure, security, and operations teams on operational readiness and monitoring
Mentor senior engineers and development teams
Facilitate technical workshops, design sessions, architecture reviews, and modernization planning
Research emerging technologies for core banking and financial services modernization
Contribute to strategic technology planning and modernization roadmaps

Requirements

What you’ll need

Bachelor's Degree in Computer Science, Information Technology, Engineering, or related discipline, or equivalent combination of education and experience
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)
Significant experience at the intersection of Core Banking with Retail Banking, Payments, Lending, or Products and Pricing environments
Proven experience designing and delivering large-scale modernization, migration, or digital transformation initiatives migrating from mainframe systems to SaaS applications
Hands-on experience with cloud-native architectures, distributed systems, API platforms (e.g. Mulesoft), event-driven solutions (e.g. Apache Kafka), and enterprise integration patterns
Significant experience implementing DevSecOps, CI/CD pipelines using Jenkins and open source tools, automated testing frameworks, and modern software engineering practices
Experience working within highly regulated environments
Deep knowledge of security, compliance, resiliency, and operational excellence principles
Experience with automated testing, CI/CD pipelines, observability, monitoring, and site reliability concepts
Strong understanding of application modernization and legacy migration strategies
Advanced knowledge of mainframe-based FIS banking core and modern core banking technology
Knowledge of Oracle cloud technologies, Azure, and hybrid cloud architectures
Must be authorized to work in the United States without current or future sponsorship

Benefits

Comp & perks

Highly competitive pay
Generous benefits and perks
Meaningful career experience
Energized, engaged and committed culture
Equal employment opportunity
Medical accommodations and assistance during the application and hiring process