This is a remote position; however, the candidate must reside within 30 miles of one of the following locations: Portland, ME; Boston, MA; Chicago, IL; Dallas, TX; San Francisco Bay Area, CA; and Seattle/WA. As a Staff Backend Engineer, you will be the primary architect and execution lead for the transformation of our Digital Credit Application. We are pivoting from a Salesforce-centric monolith to a high-performance, pluggable API ecosystem. Your mission is to decouple core adjudication logic, enable rapid A/B testing of the customer journey, and lay the technical foundation for future AI-driven chat and automated decisioning experiences. This is a high-impact role designed for a "builder" who can manage the duality of supporting a live Salesforce environment while aggressively migrating mission-critical services to a modern, micro services based backbone. Core Responsibilities - Architectural Migration: Lead the "Strangler Fig" migration of credit application logic out of Salesforce and into a scalable, cloud-native Java/Spring Boot microservices environment. - Pluggable Adjudication: Design and implement a modular adjudication layer that allows the business to swap or update credit rules and third-party data providers without impacting the core application flow. - API-First Ecosystem: Build and maintain robust, versioned REST/gRPC APIs that support a multi-channel experience (Mobile, Web, and future AI Chat interfaces). - A/B Strategy Enablement: Engineer the backend infrastructure to support dynamic routing and experimentation, allowing Product teams to test various application flows and UI treatments in real-time. - Operational Excellence & Ownership: Transition the platform by establishing rigorous standards for CI/CD, observability (OpenTelemetry), and automated testing. - AI Readiness: Partner with Data Science teams to ensure data pipelines and backend schemas are optimized for LLM integration and real-time credit decisioning models. - Provide technical mentorship and guidance to mid-level and senior engineers, fostering a culture of high engineering standards. Key Qualifications: - 10+ Years of Engineering Excellence: Proven track record in backend architecture, specifically within Fintech, Lending, or Credit systems. - Salesforce Integration Mastery: Significant experience integrating Salesforce with external AWS/Cloud microservices. You understand how to extract business logic from Apex/Flows into external services. - Modern Java Stack: Expert-level proficiency in Java 17/21, Spring Boot 3.x, and Spring Cloud. - Complex Adjudication & Rules Engines: Experience building or implementing rules engines (e.g., Drools, Camunda, or custom JSON-logic) for automated decisioning. - Event-Driven Design: Deep experience with Kafka or RabbitMQ for maintaining data consistency between the new API layer and legacy systems of record. - Contract-First Development: Strong belief in API contracts (OpenAPI/Swagger) to ensure seamless collaboration with frontend and mobile teams. - Migration Strategy: Demonstrated ability to migrate high-volume traffic from legacy systems to new stacks with zero downtime. - Excellent analytical skills and capability in identifying and resolving complex, cross-functional problems. - Strong written and verbal communication skills, able to present complex technical concepts clearly. - Bachelor's degree in Computer Science or a related field. The base pay range represents the anticipated low and high end of the pay range for this position. Actual pay rates will vary and will be based on various factors, such as your qualifications, skills, competencies, and proficiency for the role. Base pay is one component of WEX's total compensation package. Most sales positions are eligible for commission under the terms of an applicable plan. Non-sales roles are typically eligible for a quarterly or annual bonus based on their role and applicable plan. WEX's comprehensive and market competitive benefits are designed to support your personal and professional well-being. Benefits include health, dental and vision insurances, retirement savings plan, paid time off, health savings account, flexible spending accounts, life insurance, disability insurance, tuition reimbursement, and more. For more information, check out the "About Us" section. Pay Range: $140,600.00 - $173,100.00

• Design, develop, and implement large-scale distributed systems with scalability, low latency, and fault tolerance • Implement APIs and event-driven solutions to meet system requirements and enhance functionality • Create and execute unit, API, regression, and performance tests to ensure system reliability • Develop modern web interfaces using React • Optimize solutions for scalability, reliability, and performance • Collaborate with cross-functional teams to resolve production incidents quickly

• Design, develop, and implement large-scale distributed systems to handle substantial data volumes, ensuring scalability, low latency, and fault tolerance • Architect and implement APIs and event-driven solutions to meet system requirements and enhance functionality • Diagnose and resolve complex production issues across services and the technology stack, delivering both code and data fixes • Create and execute comprehensive unit tests, API tests, regression tests, and performance tests to ensure the reliability and efficiency of the system • Work closely with cross-functional teams to promptly address and resolve production incidents, ensuring minimal downtime and swift recovery

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. *Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. INTRO_TO_JOB_FAMILY Responsibilities - TEXT Requirements - TEXT Hiring Process - TEXT CompensationTo view the full job description and its compensation calculator, view our handbook. The compensation calculator can be found towards the bottom of the page. Additional details about our process can be found on our hiring page. Remote-Global How GitLab will support you - Benefits to support your health, finances, and well-being - Flexible Paid Time Off - Team Member Resource Groups - Equity Compensation & Employee Stock Purchase Plan - Growth and Development Fund - Parental leave - Home office support Please note that we welcome interest from candidates with varying levels of experience; many successful candidates do not meet every single requirement. Additionally, studies have shown that people from underrepresented groups are less likely to apply to a job unless they meet every single qualification. If you're excited about this role, please apply and allow our recruiters to assess your application. Country Hiring Guidelines: GitLab hires new team members in countries around the world. All of our roles are remote, however some roles may carry specific location-based eligibility requirements. Our Talent Acquisition team can help answer any questions about location after starting the recruiting process. Privacy Policy: Please review our Recruitment Privacy Policy. Your privacy is important to us. GitLab is proud to be an equal opportunity workplace and is an affirmative action employer. GitLab’s policies and practices relating to recruitment, employment, career development and advancement, promotion, and retirement are based solely on merit, regardless of race, color, religion, ancestry, sex (including pregnancy, lactation, sexual orientation, gender identity, or gender expression), national origin, age, citizenship, marital status, mental or physical disability, genetic information (including family medical history), discharge status from the military, protected veteran status (which includes disabled veterans, recently separated veterans, active duty wartime or campaign badge veterans, and Armed Forces service medal veterans), or any other basis protected by law. GitLab will not tolerate discrimination or harassment based on any of these characteristics. See also GitLab’s EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know during the recruiting process.