Software Engineer (Apps) 4

WEXWEXUS•Remote, OH

1d•$140,600 - $173,100

About The Position

WEX is seeking a seasoned Senior Software Engineer in its Mobility Engineering organization. The role supports fleet management and mobility payment solutions for large customers, working with a development team spanning the United States, Brazil, and India. WEX Mobility products provide SaaS and API solutions, including credit issuance to fleet companies and workers through WEX or co-branded credit cards, along with fuel discounts and configurable spending controls. The position involves designing, developing, and maintaining backend services and APIs; leading technical design and initiatives; supporting large customer implementations and products on the IBM iSeries platform; and collaborating with stakeholders and cross-functional teams. It also includes mentoring engineers, maintaining software quality and documentation, improving system performance and reliability, and providing live-site production support.

Requirements

Bachelor’s degree in Computer Science or Software Engineering.
10 or more years of professional software engineering experience.
10 or more years of deep technical knowledge of iSeries technologies, including RPG III, RPGILE, RPG IV, RPG400, CLP, C++, DDS, IBM Utilities, SOAP, PHP, .NET, web services, and DB2 databases.
Strong understanding of data structures, algorithms, object-oriented design, and problem-solving.
Expertise designing and developing internet-scale services with attention to scalability, availability, security, and reliability.
Backend development proficiency, including Java or C#, Spring Boot, RESTful APIs, the ODATA framework, and SQL.
Experience with IBM iSeries communications and administration, SSL, SSH, TCP/IP, and web services.
Excellent written and verbal communication skills and a collaborative, empathetic mindset.

Nice To Haves

Master’s degree in Computer Science or Software Engineering.
Experience with event-driven architecture and tools such as Kafka.
Experience working on card payments.
Familiarity with cloud-native architecture and containerization tools such as Docker and Kubernetes.
Awareness of API security and PCI DSS compliance requirements.
Ability to work in existing codebases, contribute improvements, and adapt to legacy-system constraints.

Responsibilities

Design, develop, and maintain robust, scalable, high-performance object-oriented backend services.
Develop public REST APIs using Java and internal gRPC APIs for inter-service and inter-system communication.
Create system designs, lead design decisions, and align with other senior engineers.
Write automated unit, integration, end-to-end, concurrency, and load/performance tests.
Analyze systems for bottlenecks and technical debt, and implement scalability and stability improvements.
Automate testing, monitoring, healing, and application scaling, and support continuous integration and deployment.
Collaborate with product managers, designers, engineers, stakeholders, and customers to define requirements and implement features.
Conduct code reviews, mentor junior and mid-level engineers, and promote engineering best practices.
Troubleshoot complex issues, develop fixes, author root cause analysis documents, and improve performance and reliability.
Compare competing technologies and advise the team on the advantages and disadvantages of potential solutions.
Maintain design documents, run books, change management documents, and readiness plans.
Provide production application support by monitoring systems, resolving incidents, and driving continuous improvement.
Lead cross-team projects as a single-threaded owner or technical lead and unblock other engineers.
Support Mobility major-account implementations on the IBM iSeries platform.
Engineer and implement software solutions for the iSeries environment.
Guide teams through project lifecycles, gather requirements, and translate them into technical solutions.

Benefits

Health insurance
Dental insurance
Vision insurance
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, subject to role and applicable plan