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

🔭  Deployed:    Skillnox.AI — AI interview simulator · local Qwen 2.5 LLM · live at skillnoxai.kitaghire.in
🏗️  Running:     Skillnox (5k VUs · 100% load test) · KITAghire.in (live college T&P portal)
🏆  Won:         1st Place — Elevate X Hackathon · 3rd Place — Dept. Hackathon (StudentConnect)
🌐  Led:         Google Student Ambassador @ KITS · 300+ member community · 7+ technical workshops
⭐  Certified:   SAP ABAP Cloud · Oracle OCI GenAI Pro · ServiceNow CSA & CAD · HackerRank 5-Star Python
📚  Solving:     LeetCode (live stats below ↓) · System Design · ABAP Cloud 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 Results (20-min peak · June 26, 2026): 146,045 requests · 118.7 req/s throughput · 100.00% success rate (0 failures) · P99 latency 17.12ms — verified improvement from 99.66% baseline through three optimization iterations.
• Performance Engineering: 3-tier leaderboard cache (local LRU with stale-while-revalidate → shared Redis → PostgreSQL with request deduplication and query coalescing) preventing database stampedes under concurrent submissions.
• Memory Optimization: Fixed worker cache eviction storms by tuning memory pressure middleware limits (1200MB threshold) and resolving garbage collection event-loop blocking.
• Security & Anti-Cheat: Full-browser protection — active tab-switch tracking, keyboard event interception, DevTools/AI extension blocking.
• CI/CD Pipeline: GitHub Actions workflows running compilation checks, migrations, Jest unit tests, and Playwright E2E tests on spin-up PostgreSQL/Redis containers.

Full-stack AI interview simulation platform with local LLM inference, multi-round placement workflows, and recruiter portfolio sharing — built for complete on-premise data privacy.

• Local LLM Inference Pipeline: Runs Qwen 2.5 3B via Ollama for real-time answer evaluation and dynamic question generation — zero external API dependencies, zero data leaks.
• Multi-Round Simulation Engine: Orchestrates Aptitude → Technical → HR rounds with configurable score-gating thresholds, mirroring real placement drives across 23 companies (TCS, Google, Amazon, Goldman Sachs, etc.).
• Evaluation Queue with Concurrency Control: Priority-based task queue with bounded parallelism (max 2 active LLM calls), retry backoff (3 attempts × exponential delay), and load shedding at 100 pending tasks.
• Recruiter Portfolio Sharing: Students generate privacy-masked public report links — emails, roll numbers, and voice/video logs stripped from the public REST API response.
• 25,000-Sample Fine-Tuning Dataset: Structured JSONL training corpus covering 2025–26 trending topics (RAG, Vector Databases, LLM fine-tuning, System Design) for offline model improvement.
• Admin Campaign Scheduler: Placement officers schedule automated mock drives targeting specific departments, with a background worker auto-enrolling students at configured launch time.

AI-powered Patient Acquisition & Trust Engine for dental restoration 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 dental restoration previews.
• Dental Tourism Calculator: Built comparison engines to estimate dental costs across multiple states and countries.
• Smart Follow-up System: AI-driven automated message system to guide post-treatment patient recovery.
• Testing Integrity: 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 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%.

💼  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 25%
    ➔ Improved overall workflow efficiency by ~30%

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

🥇  1st Prize — Codegnan Elevate X Hackathon                               May 2026
    Global Smile · 12-Hour Sprint · React · Node.js · Prisma · PostgreSQL
    ➔ Built AI-powered trust and billing engine for dental clinics end-to-end
    ➔ Evaluated by technical panel across 3 live development iterations
    ➔ Offered internships and placement opportunities post-event

🥉  3rd Prize — Department Hackathon (CSE, KITS)                           Feb 2026
    StudentConnect · 48-Hour Sprint · Python · Django · PostgreSQL
    ➔ Engineered resource-sharing platform for academic departments
    ➔ Delivered fully working product with live deployment within deadline

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

Verified, globally recognised credentials from major enterprise technology providers.

Hands-on coding assessments with verified pass rates.

🎓 Workshop: AI & Data Science — IIT Bombay TechFest (2026)

• 🎓 Graduating April 2027 (B.Tech CSE · 8.3 CGPA)
• Open to Full-Time SDE / Backend / Full-Stack / Enterprise Platform Roles and 6-Month Internships (Winter 2026).
• Open to relocate anywhere in India.