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Rajendra Kumar

Senior Full-Stack & AI Engineer

Jaipur, India · Remote · realmind.in@gmail.com · +91 9950105566

rajendracto.com · linkedin.com/in/rajendra-nagar-464580170/ · github.com/rajcracker

Summary

Senior Full Stack Engineer with 10+ years delivering production web applications across SaaS and enterprise platforms using Vue.js 3, Laravel, Next.js, and TypeScript. Over the past two years I have extended that into OpenAI and Claude API integration — building LLM-powered features such as automated workflow assignment and AI-assisted content generation for live products, including a founding-engineer role on a multi-tenant SaaS with an AI booking layer. Equally comfortable owning a full-stack build end-to-end or embedding AI capability into an existing platform, leading small engineering teams, running Agile delivery, and holding test coverage through TDD.

Skills

Experience

Senior Full Stack Developer / Technical Lead, Cracker Digital Media

Jun 2019 — Present

Jaipur, India · Remote

  • Delivered 5+ client platforms end-to-end with Vue.js 3 and Laravel, from architecture through deployment, cutting average delivery cycle time by around 25%.
  • Led a remote engineering team of 4–6 through Agile/Scrum sprints — sprint planning, code review, and delivery milestones in JIRA.
  • Built an AI-powered job dispatch system for Markham Heating & Air Conditioning that automatically assigns incoming service requests to the nearest available technician, replacing manual scheduling.
  • Designed AI-assisted commitment generation (OpenAI API) for a behaviour-change platform with 10K+ registered users, converting user-entered goals into structured action plans with automated milestone notifications.
  • Traced and resolved a production incident affecting Australian users to a Safari cookie-scoping issue on the AU-region server, restoring full functionality with zero data loss.
  • Built an internal client support workflow to log, prioritise, and resolve product queries, reducing ticket backlog and improving response times.
  • Built Next.js SSR applications backed by Laravel REST APIs, reaching sub-1s TTFB and a 35% increase in organic search traffic.
  • Introduced TDD practices using Vitest and PHPUnit, sustaining 90%+ test coverage across active projects.
  • Containerised environments with Docker and built GitHub Actions CI/CD pipelines, cutting deployment time by 4+ hours per release.
  • Managed production infrastructure on AWS (EC2, S3, CloudFront, RDS), sustaining 99.9% uptime across active client platforms.
  • Mentored 3–4 junior engineers through code reviews, design discussions, and structured 1:1s.

Front-End Engineer, Kriscent Techno Hub Pvt. Ltd.

Jan 2015 — Jun 2019

Kota, India

  • Developed responsive, mobile-first UIs in Vue.js and React across 5+ client web platforms, driving a 40% growth in mobile platform traffic.
  • Improved First Contentful Paint by 60% across legacy applications through code-splitting, route lazy loading, and bundle optimisation.
  • Standardised UI component libraries using Tailwind CSS, Bootstrap, and SASS across the engineering team.
  • Cut UI defects by 30% by adding structured Lighthouse audits and WCAG 2.1 accessibility benchmarks to QA sprints.
  • Refactored onboarding and checkout flows, contributing to an 18% lift in user conversion over 12 months.

Selected projects

Education

Bachelor of Computer Applications, Kota University, India, 2014

Certifications

Awards