I focus on building production-grade software that performs reliably at scale. Every engineering claim here is backed by system design schematics, live code walkthroughs, and automated load tests.

🔭  Building:    Skillnox.AI — AI-integrated interview and assessment platform (local Qwen LLM inference)
🏗️  Deployed:    Skillnox (5k concurrent users, 100% success load test) · KITAghire.in (College placement portal)
🏆  Won:         1st Place — Elevate X Hackathon · 3rd Place — Dept. Hackathon (StudentConnect)
🌐  Led:         Google Student Ambassador @ KITS · 300+ member community · Delivered 7+ technical workshops
⭐  Ranked:      HackerRank 5-Star Python · Problem Solving & SQL Certified · Oracle OCI GenAI Professional
📚  Solving:     LeetCode (live stats below ↓) · System Design · ServiceNow Development
📫  Contact:     varikallusurendra@gmail.com

Secure online assessment platform built from scratch and deployed college-wide at KITS. Architected, built, deployed, and maintained entirely by me.

• Load test metrics (20-minute peak test): Successfully processed 146,045 total HTTP requests at a steady 118.7 req/s throughput with 100.00% request success (0 errors) and a P99 latency of 17.12 ms.
• Performance Engineering: Enabled a 3-tier leaderboard cache (local LRU cache with stale-while-revalidate ➔ shared Redis ➔ PostgreSQL with singleflight query coalescing) to prevent database stampedes under concurrent submissions.
• Memory Optimization: Fixed worker cache eviction storms by tuning memory pressure middleware limits (raising threshold to 1200MB) and resolving garbage collection event-loop blocking.
• Security & Anti-Cheat: Implemented full-browser protection including active tab-switch tracking, keyboard shortcut interceptors, and DevTools/AI extensions blocking.
• CI/CD Pipeline: Configured automated GitHub Actions workflows running compilation checks, migrations, Jest tests, and Playwright E2E browser tests on spin-up PostgreSQL/Redis containers.

AI-powered Patient Acquisition & Trust Engine for prosthodontic clinics. Built from scratch in a 12-hour sprint across 3 live evaluation phases evaluated by industry experts.

• Interactive Smile Visualizer: Developed interactive modules to project post-treatment prosthodontic visuals.
• Dental Tourism Calculator: Built comparison engines to estimate dental costs across multiple states and countries.
• Smart Follow-up System: Created an AI-driven automated message system to guide post-treatment patient recovery.
• Testing Integrity: Setup comprehensive unit and integration testing pipelines to verify patient cost calculation logic.

Production-grade platform replacing 100% of manual placement department paperwork at KITS, currently serving the administration, students, and recruiters.

• Administrative Dashboard: Real-time placement analytics and student registration tracking, supporting 300+ concurrent active users during placement drives.
• Student Portfolios: Manages individual academic scores, placement histories, and training progress with role-based access control.
• Reporting Automation: Automated Excel/PDF report generation, reducing administrative reporting time by ~80%.

Assessment platform extension integrating technical interview evaluation using local AI models, maintaining complete data privacy.

• Local Inference: Utilizes locally deployed Qwen LLM models for candidate answers evaluation, avoiding external API dependencies or data leaks.
• Stack: React · local Qwen LLM · Node.js · Express · PostgreSQL · Tailwind CSS

🥇  1st Prize Winner — Codegnan Elevate X Hackathon                           May 2026
    Global Smile  ·  12-Hour Sprint  ·  React · Node.js · Prisma · PostgreSQL
    ➔ Built trust and billing engines for clinics under extreme time constraints
    ➔ Evaluated by technical panel across 3 development iterations
    ➔ Offered internships and placement opportunities post-event

🥉  3rd Prize Winner — Department Hackathon                                    Feb 2026
    StudentConnect  ·  48-Hour Sprint  ·  Python · Django · PostgreSQL
    ➔ Engineered resource-sharing platforms for academic departments
    ➔ Deployed and presented fully working software prototype to panels

🌐  Google Student Ambassador                                              July – Dec 2025
    KITS Akshar Institute of Technology
    ➔ Organised 7+ developer workshops covering Android, cloud setups, and AI tools
    ➔ Formed and managed a tech community of 300+ active student developers
    ➔ Drove a 50% increase in developer student registrations on campus

💼  Full-Stack Developer Intern — Cognifyz Technologies                    Jun – Jul 2025
    React · Node.js · Express · MongoDB
    ➔ Developed RESTful API endpoints and integrated UI screens
    ➔ Optimized backend controller logic, reducing response latency by 30%

💼  Frontend Developer Intern — Codegnan (Offline)                          May – Jun 2025
    React · Figma
    ➔ Designed responsive UI prototypes and built modern frontend screens
    ➔ Optimized asset sizing to maintain quick landing page load times (<2s)

🛠️ Also Certified: ServiceNow Certified System Administrator (CSA) · CAD in progress — enterprise ITSM track

• 🎓 Graduating April 2027 (CSE)
• Open to Full-Time SDE / Backend / Full-Stack Roles and 6-Month Co-ops / Internships (Winter 2026 / Summer 2027).
• Open to relocate anywhere.