Senior Software Development Engineer

About the role
​We are seeking a seasoned Software Engineer in the WEX Mobility Engineering organization. This role lies within the OTR (Over the Road) team. As a OTR Software Development Engineer you will work as part of an Agile development team to deliver capabilities for our Over the Road product suite. Our OTR systems provide SaaS and API solutions to our various customers. OTR products enable credit issuance to fleet companies and their workers in the form of OTR/WEX or cobranded credit cards, usable at fueling stations and select other merchants. At OTR, we provide fleet managers and operators with the flexibility to configure spend controls that restrict fleet members to use their cards at configured merchants, for configured amounts and velocity etc. You will be joining a team of engineers and product stakeholders who have a passion for creating value for our customers by simplifying the business of doing business. You will leverage technology to improve the value, quality, stability and performance of our services and applications.

How you’ll make an impact

• Design, develop, and maintain robust, scalable, and high-performance object oriented code in our backend services.

• Develop libraries and components that fit into Mobility services. 

• Work with senior engineers to co-develop systems designs, and drive alignment with other engineers.

• Write automated unit tests, integration tests, end-to-end tests, concurrency tests, load/performance tests. 

• Work with tech leads and senior engineers to identify bottlenecks, outline tech debt, and implement incremental scalability, and stability improvements.

• Implement automation for testing, monitoring, auto-scaling, continuous integration and deployment to reduce time to market

• Collaborate with cross-functional team members, including product managers, designers, and other engineers, to define and implement new features.

• Seek and conduct code reviews (comment, approve, seek revisions, merge), and actively learn engineering best practices.

• Dive deep and troubleshoot complex issues, devise fixes, author root cause analysis documents, and ensure lasting performance and reliability.

• Maintain robust documentation (design docs, run books, change management docs, and readiness plans) 

• Provide live-site support for production applications by monitoring systems, ensuring rapid incident resolution, and driving continuous improvement.

Experience You'll Bring:

• Bachelor’s degree in Computer Science or Software Engineering

• Significant professional experience in software engineering.

• Strong understanding of data structures and algorithms, object-oriented design, and problem-solving skills.

• Excellent written and verbal communication skills, and a collaborative and empathetic mindset.

• Proficiency in backend development, with proficiency expertise in Java (C++/C# will also be considered), and frameworks like SpringBoot, building and optimizing RESTful APIs, ODATA framework, and SQL

Preferred Qualifications

• Master’s degree in computer science or software engineering.

• Significant experience in software engineering 

• Expertise in designing and developing internet-scale services with scalability, availability, security, and reliability design tenets.

• Familiarity with cloud-native architecture (containerization using tools such as Docker and Kubernetes.)

• Ability to work on existing codebase, contribute improvements, and adapt to legacy systems’ constraints.