Staff Engineer

WEX

. Serve as the primary architect and execution lead for platform changes to the Digital Credit Application .

Posted 11/6/2026full-timeRemote • United StatesLead💰 $140,600 - $173,100 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in backend architecture and cloud-native microservices, particularly within Fintech and Credit systems. Proficient in Java, Spring Boot, and AI tools to enhance development processes and ensure high engineering standards.

Highest-signal resume keywords

Java 17/21 ProficiencySpring Boot 3.x ExpertiseCloud Microservices ArchitectureAPI Contract Adherence with OpenAPI/SwaggerExperience with Kafka or RabbitMQ

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend ArchitectureMicroservices DevelopmentRules Engine ImplementationREST/gRPC API DevelopmentData Synchronization with SalesforceCI/CD Standards EstablishmentAI Coding Assistant UsageVersion ControlReal-Time A/B TestingData Pipeline Engineering

Soft Skills

Analytical SkillsCommunication SkillsMentoring AbilityProblem-Solving Skills

Tools & Technologies

AWSSalesforceOpenTelemetryCursorCopilot

Certifications & Qualifications

Bachelor’s Degree in Computer Science

Industry Keywords

FintechLendingCredit SystemsLegacy Systems MigrationCloud-Native Applications

Tech Stack

Tools & technologies

AWSCloudGRPCJavaKafkaMicroservicesRabbitMQSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Serve as the primary architect and execution lead for platform changes to the Digital Credit Application
Lead migration of core credit application logic from a legacy monolith into scalable, cloud-native Java/Spring Boot microservices
Design and execute high-volume traffic migration strategies with zero disruption to live customers
Support bidirectional data and state synchronization with Salesforce integrations
Design and implement a modular adjudication layer for changeable credit rules and third-party data providers
Build and maintain versioned REST/gRPC APIs for Mobile, Web, and future AI Chat interfaces
Engineer backend infrastructure for dynamic routing and real-time A/B testing of application flows
Use AI tools across the development lifecycle to accelerate coding, refactoring, testing, and documentation
Partner with Data Science teams on data pipelines and backend schemas for LLM integration and real-time credit decisioning
Establish standards for CI/CD, OpenTelemetry observability, and automated contract testing
Mentor mid-level and senior engineers and promote high engineering standards, clean code, and AI-assisted productivity
Support a live production environment while migrating mission-critical services to a microservices-based backbone

Requirements

What you’ll need

10+ years of engineering experience, specifically in backend architecture within Fintech, Lending, or Credit systems
Expert-level proficiency in Java 17/21, Spring Boot 3.x, and Spring Cloud
Significant experience extracting tightly coupled business logic from legacy backends into scalable cloud microservices on AWS
Experience building or implementing rules engines, such as Drools, Camunda, or custom JSON-logic
Deep experience with Kafka or RabbitMQ
Strict adherence to API contracts using OpenAPI/Swagger
Hands-on experience using AI coding assistants such as Cursor or Copilot
Strong analytical skills and capability in resolving complex, cross-functional problems
Excellent written and verbal communication skills; ability to present complex technical concepts clearly to stakeholders
Bachelor’s degree in Computer Science or a related technical field
Salesforce proficiency is a strong advantage

Benefits

Comp & perks

Health, dental, and vision insurances
Retirement savings plan
Paid time off
Health savings account
Flexible spending accounts
Life insurance
Disability insurance
Tuition reimbursement
Quarterly or annual bonus eligibility for non-sales roles, based on applicable plan