Staff, Software Engineer

About The Team/Role At WEX, we simplify the business of running a business. Our WEX Benefits solutions reduce complexity and help manage costs of benefits administration for our clients and partners. We are looking for passionate technologists, collaborators, and problem solvers to join our Benefits Technology team as we build the next generation of employer benefits solutions and services. As a Software Engineer IV (Tech Lead / Staff) on the WEX Benefits Technology team, you will serve as the technical leader for your squad, bridging the gap between product requirements and engineering execution. You are expected to collaborate effectively with Product Managers and other Engineering teams to guide your team in designing robust solutions and delivering them iteratively. You must stay current with the technology options at WEX and partner with your Team Manager to ensure the team is continuously upskilling to deliver best-in-class work. You are expected to operate with high autonomy, filling technical gaps in design and implementation and delivering high-quality code without being told. How you’ll make an impact

• Lead initiatives by using wide-ranging experience to make decisions on methods and approaches; collaborate with Product Managers and Senior Engineering Managers to advise on and guide the design and iterative delivery of complex solutions.
• Actively stay current with WEX technology options and industry trends; work closely with the Team Manager to identify skill gaps and ensure the team is upskilling to adopt new technologies effectively.
• Proactively identify and fill technical gaps in design and implementation; design, test, code, and instrument solutions without guidance, ensuring zero scope for code review feedback on your own contributions.
• Mentor the entire engineering team (not just individuals), fostering a culture of continuous learning, technical excellence, and "Team Up" behavior.
• Lead the team in defining API specifications, database schemas (advanced indexing/optimization), and system architecture, ensuring all designs support High Availability and scalability.
• Hold your team accountable for delivering quality results using defined goals.
• Support production applications with advanced observability; lead rapid incident response and root cause analysis (RCA) to drive system stability. Analyze systems to identify bottlenecks and drive decisions using data.
• Strengthen and drive the engineering process using Test Driven Development (TDD), Behavior Driven Development (BDD), and Microservice/Vertical Slice Architectures.
• Leverage AI-powered development tools to act as a force multiplier for the team; guide the team in integrating AI/ML workflows to enhance efficiency and maintain high code quality. Experience you’ll bring
• Bachelor's degree in Computer Science, Software Engineering, or related field; OR demonstrable equivalent experience.
• At least 8 years of work experience in software engineering.
• Proven ability to deliver complex software features and fill technical gaps without being told; ability to lead conversations without expecting hints.
• Excellent communication skills with the ability to collaborate across technical and non-technical stakeholders (Product, Design, Operations).
• Strong understanding of software security principles and OWASP guidelines.
• Passionate about keeping up with modern technologies and design.
• Strong proficiency in Angular and/or React
• Experience building and consuming REST APIs
• Proven track record of writing comprehensive unit tests and test suites
• Proficiency with Git version control and CI/CD pipelines
• Experience with Agile development methodologies
• Track record of delivering complex projects on schedule
• Experience in writing performant stored procedures and functions

Technology Must-Haves

• C#, Python (Expert proficiency).
• Deep understanding and application of OOP, SOLID, and design patterns.
• Strong aptitude for integrating AI/ML-driven development workflows into the daily Software Development Lifecycle (SDLC)
• Cloud & Infrastructure: Azure, Docker, Kubernetes, and GitHub Actions
• Architecture: Knowledge of RESTful API design and Kafka/event-driven design
• Data: Modern RDBMS (e.g., MS SQL, Postgres) and NoSQL databases
• Modern Web UI Frameworks and Libraries (i.e. Angular, React)
• Advanced Querying: GraphQL
• Advanced Ops: Helm, ArgoCD, Terraform

Technology Nice-To-Have Or Dedicate To Learning Quickly

• Emerging Tech: Generative AI models and Agentic AI frameworks (e.g., Autogen, Langchain)
• Tech Leadership: Experience leading small initiatives or serving as a scrum master/team lead.