Note: The job is a remote job and is open to candidates in USA. WEX is a company focused on developing tools for the modern vehicle experience. The Senior Software Development Engineer will design and develop robust web applications and public REST APIs, ensuring high performance and reliability while collaborating with various engineering teams.
Responsibilities
- Design, develop, and maintain robust, scalable, and high-performance web applications
- Develop public REST APIs using Python and Node for inter-service and inter-system communication
- Implement comprehensive automated testing strategies, including unit, integration, end-to-end, load, and performance testing
- Identify bottlenecks and tech debt; drive incremental scalability, and stability improvements
- Develop and enhance automation frameworks for testing, monitoring, auto-scaling, continuous integration and deployment to reduce time to market
- Conduct code reviews (comment, approve, seek revisions, merge), and champion engineering best practices, and continuously raise the quality bar
- Troubleshoot complex production 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)
- Analyze data to understand risk problems and build effective solutions
- Analyze system performance and identify bottlenecks and opportunities for improvement
Skills
- 5-8 years of professional experience in software engineering
- Expertise in backend development, including strong proficiency in Python, Node.js, Go or C++ and building and optimizing RESTful APIs and SQL
- Strong foundation in data structures and algorithms, object-oriented design, and problem-solving
- Experience with cloud-native environments, including Docker, Kubernetes, or AWS/GCP/Azure
- Experience with event-driven architecture and tools like Kafka
- Familiarity with relational or NoSQL databases; e.g. SQL, MongoDB
- Expertise in designing and developing internet-scale services with scalability, availability, security, and reliability design tenets
- Familiarity with Git, automated testing frameworks, and CI/CD workflows
- Clear written and verbal communication skills, and a collaborative and empathetic mindset
- Awareness of API security requirements
- Experience or familiarity with telematics data, time-series data, and/or geospatial data
- Ability to work within existing codebases with legacy systems constraints
- Proficiency with modern front-end frameworks such as Angular or React
- Solid understanding of web security fundamentals including authentication, authorization, and data protection
- Proven experience with micro-frontends or module federation
- Experience developing with the assistance of AI-driven tools
- Experience working with geographically distributed teams
Benefits
- Health, dental and vision insurances
- Retirement savings plan
- Paid time off
- Health savings account
- Flexible spending accounts
- Life insurance
- Disability insurance
- Tuition reimbursement
- 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
Company Overview
Wex is a financial technology service provider for fleet, travel and healthcare industries. It was founded in 1983, and is headquartered in Portland, Maine, USA, with a workforce of 5001-10000 employees. Its website is http://www.wexinc.com.Company H1B Sponsorship
WEX has a track record of offering H1B sponsorships, with 4 in 2026, 22 in 2025, 10 in 2024, 12 in 2023, 20 in 2022, 14 in 2021, 18 in 2020. Please note that this does not guarantee sponsorship for this specific role.