Note: The job is a remote job and is open to candidates in USA. ClassWallet, a leading financial technology company in the United States, is seeking to hire a Senior Full Stack Engineer, Ecommerce to join our team. The role involves owning significant features, shaping system architecture, and improving code quality while contributing to a positive team environment.

Responsibilities

• Own significant features end to end
• Help shape system architecture
• Set the bar for code quality across the team
• Build, review, and improve high-performing software
• Raise the team’s technical level through strong code reviews
• Provide thoughtful design input
• Mentor less-experienced engineers
• Deliver well-tested, high-quality marketplace features on time
• Contribute directly to the scalability, security, and reliability of the e-commerce platform
• Help elevate the team’s overall technical capability through high-quality code reviews
• Take ownership of complex architectural challenges, system designs, and critical feature development

Skills

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related technical field (or equivalent combination of education and hands-on practical experience)
• 5+ years of progressive software engineering experience across the full software development life cycle (SDLC)
• Demonstrated ability to operate with a high degree of autonomy: scoping and breaking down complex work, driving features to completion, and unblocking yourself and others
• Experience mentoring or guiding other engineers through code reviews, pairing, and technical discussion (formal management experience is not required)
• 2+ years of direct experience building, scaling, or maintaining e-commerce platforms, multi-vendor marketplaces, or high-volume transactional SaaS applications
• Working understanding of domain-specific challenges, such as shopping cart state management, payment gateway integrations, inventory synchronization, and secure user data handling
• Hands-on experience integrating PunchOut catalogs with third-party procurement and ERP systems (e.g., SAP Ariba, Coupa, Jaggaer, Oracle Procurement), including the end-to-end punchout session and cart round-trip
• 4+ years of full-stack development experience heavily focused on the JavaScript/TypeScript ecosystem
• Strong hands-on experience designing and building scalable backend services and RESTful/GraphQL APIs using Node.js and Nest.js
• Solid experience developing responsive and high-performance frontends using React and Next.js
• Practical experience with database design and management, including a working knowledge of both NoSQL (MongoDB for dynamic catalogs/profiles) and relational (MySQL for strict financial/order ledgers) databases
• Familiarity with e-procurement integration standards and protocols — cXML PunchOut (PunchOutSetupRequest/Response, PunchOutOrderMessage) and/or OCI — along with purchase order and invoice document exchange (e.g., cXML OrderRequest, InvoiceDetailRequest)
• Advanced E-commerce Expertise: Prior experience with high-growth e-commerce or multi-vendor marketplace platforms, specifically addressing challenges such as multi-currency transactions, global logistics, or complex vendor payout structures
• Security & Compliance Awareness: Familiarity with industry-standard compliance frameworks and security protocols, such as SOC 2, NIST, or PCI-DSS, and experience applying these controls within a cloud-native software development lifecycle
• PunchOut & Procurement Integration Depth: Proven experience building and maintaining PunchOut catalog connections at scale — including Level 1 and Level 2 PunchOut, hosted/CIF catalogs, shared-secret authentication, session handling, and troubleshooting connections across multiple buyer procurement platforms

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