Open to Opportunities

Praveen Kumar Velisetty

Senior Frontend Engineer
React · Next.js · TypeScript
9+ Years · Digital Banking & Fintech

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9+
Years Frontend
+2%
Conversion Lift
80%
Test Coverage
6+
Yrs Banking QA
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Tech Stack

React.js Next.js TypeScript JavaScript ES6+ Redux GraphQL HTML5 CSS3 Jest Cypress TDD Git / GitHub GitLab CI/CD GitHub Copilot Cursor.ai Claude Code Figma Postman REST APIs WCAG 2.1 Performance Optimization Component Architecture Design Systems Tailwind CSS Agile / Scrum Mentoring Code Reviews
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Work History

Senior Frontend Engineer
Cognizant → Goldman Sachs · Marcus Digital Banking Platform
May 2019 – Present
  • Build customer-facing features for the Marcus retail banking platform in React, Next.js & TypeScript within a 12-engineer cross-functional squad — the frontend point of reference for predominantly full-stack developers.
  • Drove a +2% conversion lift on Marcus.com customer onboarding through iterative UX and flow improvements, implementing flows with full KYC and regulatory compliance.
  • Built compliance-critical journeys — customer consents and tax compliance — meeting the audit and regulatory requirements of a US retail bank.
  • Shipped referral pages and promotional campaign features (promotional interest-rate and promo-code flows) from Figma handoff to production, composing a shared design-system component library and integrating REST + GraphQL APIs.
  • Raised unit + integration test coverage from 61% → 80%+ with Jest and Cypress, and applied WCAG 2.1 AA accessibility standards across releases.
  • Mentored 2 frontend devs, established React/TypeScript coding patterns through code reviews, and introduced AI-assisted workflows (GitHub Copilot, Cursor) to reduce boilerplate.
React.jsNext.jsTypeScriptReduxGraphQLJestCypressGitLab CI
Frontend Developer
Datamatics → Senvion (Siemens Gamesa) · Fleet Monitor
Dec 2018 – May 2019
  • Built data-visualization components for the Fleet Monitor predictive-maintenance dashboard in React and Redux, surfacing real-time wind-farm performance metrics for operators.
  • Improved dashboard rendering performance through memoization and selective re-rendering.
React.jsReduxJavaScript ES6JestREST APIs
Frontend Developer
1ByZero Labs Private Limited · IoT & AR/VR
Jun 2017 – Nov 2018
  • Delivered bilingual websites and client demo applications for IoT and AR/VR customers, owning each build from Figma handoff to production deployment.
  • Built an interactive home-automation prototype and immersive VR showcases with cross-browser support across devices.
React.jsES6React NativeHTML5CSS3
Software Quality Analyst — Earlier Career
Cognizant Technology Solutions · US & UK Banking Applications
6+ Years · Pre-2017
  • 6+ years of functional, regression, and integration testing for major US and UK banking applications before transitioning to frontend engineering.
  • This QA foundation underpins an edge-case-first, audit-aware approach to building UI for regulated financial products.
JIRAHP ALMRegression TestingIntegration Testing
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Selected Projects

← Drag & fling the cards →
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From the Blog

Performance Next.js Core Web Vitals ~8 min read

Slow on Purpose, Fast on Evidence

A banking dashboard built deliberately slow — 23MB of images, 60,000 DOM nodes — then made fast in ten measured passes. LCP −77%, TBT −94%, and two textbook optimizations that made things worse.

Read the post →
On-Device ML WebGPU LiteRT.js ~7 min read

Try-On, No Server Attached

How a virtual try-on app runs two ML models and a thin-plate-spline garment warp entirely in the browser — no inference bill, no upload, and the camera feed never leaves the device.

Read the post →
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Key Achievements

🏆
Innovation Award — Cognizant
Automated test data generation, delivering £3,000 in client cost savings.
🥇
Top 8 Finalist — Citi Bank Hackathon
Digital banking prototype with document ID verification, competing against 50+ teams.
🚀
Cognizant Vibe Coding Hackathon
Designed & shipped Fraud Guard, a fraud-awareness learning app in React.js.
📈
+2% Conversion Lift at Scale
Iterative UX and flow improvements to Marcus.com customer onboarding, measurably improving acquisition on a US retail bank.
🔍
6-Year Banking QA Foundation
Functional, regression & integration testing for major US and UK banks — an edge-case-first, audit-aware lens on every UI.
🎓
Meta React Specialization
Completed the Meta React Specialization certification.
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Let's Connect

Senior frontend engineer with 9+ years building consumer-scale, compliance-driven UI for digital banking. Open to new opportunities, collaborations, and conversations.

✉pravubi@gmail.com inLinkedIn Profile ⌥github.com/pravoobi