Devarshi Roy

• Senior consultant/Senior full stack engineer

  Deloitte USI · Kolkata ,India

  Feb 2025 – Present · ~1.8 yrs

  ● Led the architecture and delivery of an event-driven reconciliation platform using AWS SQS and PostgreSQL, reducing processing time from 24 hours to under 5 minutes and disputes by 30%. ● Drove technical design decisions across Node.js, TypeScript, and Go services, defining integration patterns for financial workflows, third-party APIs, asynchronous processing, and failure recovery. ● Designed high-concurrency transaction workflows using database locking, idempotency, deduplication, and transactional outbox patterns to ensure consistency across distributed services. ● Led end-to-end delivery of a React and Node.js loan-processing application, reducing approval time from 7–10 days to under 3 days. ● Established observability and automated quality practices across services, reducing root-cause analysis time by 50% and QA defects by 15%. ● Partnered with cross-functional stakeholders to translate complex business requirements into scalable architectures, guide technical trade-offs, and drive production delivery. ● Led frontend performance improvements through API batching and React virtualization, reducing dashboard load time by 45% and improving onboarding completion by 20%; mentored engineers through design and code reviews. ● Co-developed and evaluated GitHub Copilot agentic workflows across 3 codebases, using hierarchical Markdown-based context, structured design guardrails, and prompt strategies to assess code quality, maintainability, readability, and implementation consistency.

• Application development Team Lead/Lead full stack engineer

  Accenture · Kolkata,India

  Sept 2021 – Feb 2025 · ~3.4 yrs

  ● Architected an event-driven regulatory validation engine processing 20 GB datasets, reducing execution time from 30 minutes to under 5 minutes and enabling near-real-time BASEL 3/3.1 validation. ● Led architecture and adoption of a metadata-driven React component platform across 6+ regulatory departments, standardizing reusable UI patterns, reducing duplicate development effort by 70%, and accelerating feature onboarding by 40%.

• Software engineering associate

  Cognizant Technology Solutions · Kolkata India

  Oct 2019 – Sept 2021 · ~1.9 yrs

  Developed insurance claim UIs, APIs, and integrations, improving performance by 25% and reducing underwriting delays by 30%.

• Software engineer

  LearningMate · Kolkata,India

  Mar 2017 – Oct 2019 · ~2.6 yrs

  Developed EdTech UIs, APIs, and payment integrations, cutting support tickets 20%.

• Software engineer

  Capgemini · Pune,India

  Nov 2015 – Mar 2017 · ~1.3 yrs

  Developed an accessible front-end for “Move Money,” improving UX and reducing errors 20%.

• Bachelor of Technology Electronics and Instrumentation Technology

  Guru Nanak Institute of Technology

  2011 – 2015

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