Available for new opportunities

Vivek Rajput
Full-Stack Engineer, AI-Powered Products

10+ years as a full-stack engineer turning ambiguous problems into fast, reliable software — and now channeling that into AI-powered products: LLM-driven automation, RAG pipelines, and agentic workflows. I bring the same rigor to building with AI that cut load times, build times, and thousands of manual hours across platforms used by thousands of businesses.

📍 Gurugram, India✉️ vivek.rock0101@gmail.com📞 +91 9650412058🔗 linkedin.com/in/vivekrajput791
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Years Experience
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Merchants Onboarded
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Hrs/mo Saved via Automation
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Career

Experience

Senior Software Engineer · Zeni AI
Sep 2022 – June 2026
Remote
  • ▸Owned the Expense Automation flow end-to-end — built the transaction categorization UI where users review, approve, and correct AI-suggested categories, vendors, and classes, saving over 1,600 hours of manual bookkeeping effort per month
  • ▸Built the Missing Receipts Bulk Upload feature with AI-powered auto-matching that maps receipts to transactions in the background, saving over 400 hours of manual matching effort per month
  • ▸Migrated from Webpack to Vite and introduced react-window virtualization for large lists, cutting dev build times by ~80% and eliminating UI lag on data-heavy screens
  • ▸Optimized frontend performance through route-import refactors and lazy loading, reducing load time by 30% and bundle size by 20% via code splitting and tree shaking, improving Core Web Vitals across LCP, CLS, and FID
  • ▸Improved CI/CD pipelines using GitHub Actions, streamlining deployment workflows and reducing manual intervention across the frontend codebase
  • ▸Enhanced observability by integrating Sentry for error tracking and building a secure Mixpanel proxy for analytics ingestion
  • ▸Built server-side features using Node.js and Express, including PDF and Excel generation pipelines serving a multi-tenant platform used by hundreds of businesses
  • ▸Led architecture discussions and authored technical design documents, defining engineering standards across 6 frontend repositories
Senior Software Engineer · Airblack
Sep 2021 – Sep 2022
Gurgaon, India
  • ▸Built the core revenue system for the Sales team and an Admin Dashboard for the Marketing team
  • ▸Revamped Airblack's main website, reducing build time by 75% and load time by 50% through lazy loading, JS execution optimizations, and debounced search handlers
  • ▸Fast-tracked onboarding of new hires through structured mentorship, enabling them to become effective contributors within their first month
Senior Software Engineer · Paytm
Sep 2018 – Sep 2021
Noida, India
  • ▸Led the Onboarding Engine Platform serving 5,000+ KAM and QC agents; onboarded 10,000+ merchants across 15+ business verticals, reducing merchant onboarding time by 40%
  • ▸Set up 4xx/5xx alerting integrated with Kibana and Slack, reducing mean time to detect incidents by 60% across 10+ monitored services
  • ▸Architected a backend-driven dynamic form builder for the Sales team — a template-controlled UI that let non-engineers ship new form types in hours instead of weeks
  • ▸Improved frontend code quality by introducing best practices and mentoring junior engineers through consistent pair programming
Senior Software Engineer · Q3 Technologies
Jul 2016 – Sep 2018
Gurgaon, India
  • ▸Built a fault-reporting platform for First Group London used by 500+ field engineers across the London rail network, enabling fault logging, severity tracking, and report generation
  • ▸Launched an internal quiz platform used by 500+ employees for candidate screening during interviews and team training
Selected Work

Projects

AI Document Assistant

Building in public

A retrieval-augmented (RAG) chat assistant — upload documents and ask questions grounded in their content, with streaming responses powered by the Claude API and a vector database.

Next.jsTypeScriptClaude APIRAGVector DB
More projects shipping soon — check back shortly.
Toolbox

Skills

Languages
TypeScriptJavaScriptPython
Frameworks & Libraries
React 17/18Next.jsNode.jsExpress.jsReduxRedux ToolkitRxJSReact Router 6MUI v7
AI & LLM Engineering
Claude API (Anthropic)OpenAI APILangChainRAG PipelinesVector DatabasesPrompt EngineeringAI AgentsModel Context Protocol (MCP)
Backend & Cloud
REST APIsGraphQLPostgreSQLMongoDBRedisDockerAWS (S3, Lambda, EC2)Microservices
Tools & Platforms
GitGitHub ActionsCI/CDJestPlaywrightViteWebpackStorybookESLintSentryMixpanelKibana
Background

Education

Netaji Subhas Institute of Technology
Bachelor of Technology in Information Technology
Aug 2012 – May 2016
Delhi, India
Let's talk

Open to new opportunities

Looking for a senior engineer who ships? Let’s build something great.

I’m currently open to new roles — remote or Gurugram, India. Reach out and I’ll get back to you within a day.

Email me
Connect on LinkedIn
+91 9650412058
Download Resume (PDF)