MTS 1, Software Engineer

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work — every day. We're in this together, sustaining the future of our customers, our company, and our planet. Join a team of passionate thinkers, innovators, and dreamers — and help us connect people and build communities to create economic opportunity for all. WHI Solutions, Inc., an eBay company, operates Nexpart, a B2B marketplace built for professional automotive and truck parts businesses. The platform supports the daily operations of companies that depend on efficient, dependable purchasing to serve their own customers. Nexpart plays a central role in helping those businesses move quickly and operate with confidence. The Nexpart engineering team builds and evolves the technology behind this marketplace. We are seeking an MTS 1, Software Engineer with strong backend experience who wants to work on systems that directly power real commerce. This role offers meaningful ownership and the opportunity to contribute to core services that handle active transaction flow. You will collaborate closely with product and engineering partners to deliver scalable, well built solutions that strengthen and advance a platform relied on every day. What You’ll Do Define technical requirements in partnership with product, business, and engineering stakeholders Design, develop, and maintain scalable web and mobile applications Build and maintain server-side processing and parsing scripts Design, implement, and maintain APIs and integrations with third-party platforms Lead and assist other developers in implementing high-quality solutions Follow established frontend and API design and coding standards Participate in code reviews as both a contributor and reviewer Collaborate closely with development, QA, and internal business teams Create and maintain system and technical documentation as needed Perform application maintenance, bug fixes, and performance optimizations Monitor, troubleshoot, and resolve production issues using logging and observability tools Follow the software development lifecycle as defined by engineering and project leadership Leverage AI-powered development tools to improve productivity, code quality, and delivery speed What You'll Bring BA/BS in Computer Science or a related field, or equivalent practical experience 5+ years of experience working in an Apache, PHP, HTML, CSS, JavaScript, MSSQL, and MySQL environment Strong hands-on experience with PHP MVC frameworks Deep knowledge of SQL, with MSSQL experience required Strong understanding of web services, APIs, and SOA architectures Familiarity with CI/CD pipelines and automated deployment workflows Awareness of web application security best practices Solid experience with object-oriented design and development principles Experience developing modern front-end user interfaces using JavaScript frameworks such as Vue, React, jQuery Strong familiarity with Git and modern version control workflows Excellent English communication skills, both written and verbal Ability to work effectively in cross-functional, fast-paced environments Preferred Qualifications Experience developing and supporting high-traffic, consumer-facing applications Familiarity with performance optimization, security best practices, and scalable system design Experience mentoring junior engineers or providing technical leadership Why You’ll Love Working Here Build systems that support a global marketplace at scale Work with collaborative, high-caliber engineering teams Opportunity to influence technical direction and architecture A culture that values innovation, ownership, and continuous learning Competitive compensation and comprehensive benefits Additional Details The base pay range for this position is expected in the range below: $118,800 - $205,600 Base pay offered may vary depending on multiple individualized factors, including location, skills, and experience. The total compensation package for this position may also include other elements, including a target bonus and restricted stock units (as applicable) in addition to a full range of medical, financial, and/or other benefits (including 401(k) eligibility and various paid time off benefits, such as PTO and parental leave). Details of participation in these benefit plans will be provided if an employee receives an offer of employment. If hired, employees will be in an “at-will position” and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individu