Lead Software Engineer · Payments & Checkout
I'm Siddharth Pachori
Engineering leader and architect with 11+ years building checkout, payments, and fraud & credit risk platforms across 26 countries, including ~7 years leading teams. I led a team of 12 owning roadmap, architecture and delivery of event-driven, PCI-DSS compliant systems.
- Years experience
- 11+
- Countries
- 26
- Engineers led
- 12
- Markets expanded
- 10
Current Work / Resume
Experience
Lead Software EngineerCurrentCimpress IndiaApr 2023 - Present
- Commerce Platform Architecture: Architected a unified, event-driven checkout platform for cart, order, and direct purchase flows, used by 5 teams and 3 brands at 99.95% uptime. Built plug-and-play payment, billing, and shipping components with authorization, split/on-demand capture, and post-order fulfillment, accelerating new payment methods and market expansion.
- People & Technical Leadership: Scaled the team to 12, hiring 5 engineers and promoting 3 into senior roles. Owned architecture and critical technical decisions, translating business priorities into technical roadmaps, design standards, and operational practices.
- PCI-DSS Compliance & Expansion: Led a global card-security transformation, replacing agent-handled card capture with secure telephony payments, building configurable payment links for any payment combination, and re-architecting web card capture, removing card data from agents and systems, passing compliance audits and enabling secure expansion across markets.
- Credit Risk, Fraud Prevention & Settlement: Built pre- and post-order controls using AVS checks, velocity rules, risk scoring, capture/hold logic, payment validation and settlement workflows. Added self-service invoice workflows, cutting review time ~40%, loss exposure ~15%, and reconciliation time ~45%. Enhanced detection using device intelligence and behavioral signals.
- Payment Gateways & Methods: Expanded payments across 10 markets via Adyen, Braintree, PayPal and Klarna, adding wallets, direct debit, bank transfer and Pay by Invoice so customers can pay with locally preferred methods.
- AI Adoption & Context Engineering: Drove adoption of coding agents, LLMs and agentic workflows across 3 teams, cutting development cycle time ~30% by structuring product, domain, architecture, codebase and production context.
Senior Software EngineerCimpress IndiaMar 2021 - Apr 2023
- Distributed Backend Systems: Modernized legacy checkout and payment applications into event-driven Node.js and serverless microservices on AWS, decoupling backend workflows, increasing throughput ~32% and cutting infrastructure cost ~25%.
- API Modernization: Migrated REST APIs to Apollo GraphQL, improving API response times by ~30%.
Senior Software EngineerCybage SoftwareFeb 2019 - Mar 2021
- Zero-to-One Product Build: Led UI architecture for Fictiv's vendor and quoting platforms, increasing deployment frequency by 15%.
- Team Execution & Standards: Scoped and planned work with the EM; modernized legacy code and mentored frontend engineers.
Software EngineerWipro TechnologiesSep 2015 - Feb 2019
- Enterprise Systems: Built C# web services and SQL Server integrations automating enterprise identity/access workflows.
- Internal Tooling: Created Ideate, an internal platform for resource allocation and improvement tracking adopted across engineering.