Sandeep Desai

A results-driven and innovative staff level software engineer with extensive experience in designing and delivering large scale distributed systems, payment platforms, eCommerce applications, and cloud modernization initiatives. Proven track record leading architecture, technical discovery, and solution design for enterprise payment systems supporting high volume retail transactions across web, mobile and native applications. Drives PCI compliance, security planning, and cloud migration initiatives that optimize costs and improve operational efficiency.

Mentors engineering teams and contributes to high-level architecture design discussions. A hardworking and creative producer committed to the long-range success of an enterprise.

Senior Software Engineer - WALMART ASSOCIATE INC. - Sunnyvale, California

(2022-01)

• Led a team of 5+ software engineers while authoring and managing solution security plans across multiple initiatives within Sam's Club WCP and non-WCP digital commerce payments and settlements, ensuring strong security posture and regulatory compliance. Drove technical discovery, architecture, and design of scalable payment solutions supporting large-scale e-commerce experiences across desktop, mobile web, and native applications processing millions of transactions.
• Designed and developed scalable payment gateway solution supporting all tenders for samsclub.com flows processing millions of transactions per day.
• Spearheaded WCP Samsclub Infrastructure designs for payments, settlement, reconcile and chargeback services (URS), and enablement of EBT as tender option across samsclub.com WCP payment flows.
• Delivered Sam's Pay payment solution for Sam's Club photos (white labeled partners) by migrating from third-party payment provider to scalable in-house payment solution.
• Modernized 3+ legacy applications by migrating from VM-based infrastructure to cloud platforms, reducing infrastructure costs by 35%, and improving availability from 99.5% to 99.99. Led migration from Oracle Exadata to cloud-native databases, generating annual savings.
• Collaborated with PCI audit teams to support audits, remediate findings, and ensure full compliance with PCI standards.
• Led system upgrades and performance tuning to handle massive traffic spikes during retail holiday peak events.
• Achieved high code quality standards through rigorous unit testing in alignment with enterprise-level security and performance guidelines.
• Mentored engineers through architecture reviews, design discussions, technical guidance, and knowledge sharing initiatives.

Senior Software Engineer Consultant - TARGET LABS INC. - Vienna, Virginia

(2015-01 - 2022-12)

• Served as a trusted technical advisor to 3+ Fortune 500 clients (Walmart, Verizon, Harland Clark), collaborating with 20+ cross-functional stakeholders across product, architecture, and engineering teams to deliver large-scale digital transformation and payment modernization initiatives.
• Collaborated with more than twenty cross functional stakeholders across product, architecture, engineering, and business organizations to drive strategic technology programs.
• Analyzed business requirement documents (BRDs) and functional requirement documents (FRDs) to translate complex client needs into technical specifications.
• Architected High-level design (HLD) and detailed low-level design (LLD) for Payment Gateway and core e-commerce modules, including shopping cart and browse and shop modules, ensuring scalable and maintainable system structure.
• Facilitated client workshops and requirements sessions with business stakeholders, achieving alignment across development teams and project sponsors. Maintained 90%+ unit test coverage, reducing production defects, and implemented performance optimizations that improved application response times while providing ongoing production support.

System Analyst - ZENSAR TECHNOLOGIES - Bengaluru, India

(2010-01 - 2015-12)

Collaborated with stakeholders on business requirements, application architecture, and solution design, delivering high-quality production code for clients Verizon Wireless and Walmart Chile eCommerce platform enhancements. Provided production support and performance improvements.

Software Engineer - SYSLOGITECH SOLUTIONS - Bengaluru, India

(2008-01 - 2010-12)

Designed and developed theater visit and car rental online web application modules. Actively aided Agile ceremonies. Delivered high-quality code through comprehensive unit and integration testing. Conducted code reviews to ensure quality of code. Provided production support and performance improvements.

B.Eng. - Information Science & Engineering - VISVESVARAYA TECHNOLOGICAL UNIVERSITY (VTU) BELGAUM