Available for opportunities
I build secure
intelligent systems.
K Harshit — Backend Engineer | LLM Security Researcher. Building at the intersection of backend engineering and AI security with scalable async APIs, RAG pipelines, and prompt injection defense.
Experience
Backend Engineering Intern
Prepairo
- Served as the primary backend intern on a production AI tutoring platform, contributing across API design, AI pipeline integration, cloud deployment, and CI/CD.
- Owned RAG and LLM pipeline infrastructure, including vector search and multi-provider orchestration (Claude, OpenAI, Gemini).
- Built and maintained async REST APIs (FastAPI + PostgreSQL + SQLAlchemy) for authentication, onboarding, curriculum browsing, progress tracking, and real-time voice tutoring.
- Shipped production systems with GitHub Actions CI/CD, Firebase push notifications, background jobs, and multi-provider OAuth2 (Google, Apple, Microsoft).
Summer Research Intern
CCNCS, PES University
- Designed XJailGuard, a modular LLM security framework to detect multi-turn and cross-lingual prompt injection attacks in transformer-based models.
- Built multilingual classification pipelines using PyTorch and Hugging Face, incorporating sliding-window contextual memory for adversarial intent detection.
- Improved jailbreak detection accuracy from 8-12% baseline to 91-93% through layered input/output filtering and zero-trust validation.
- Integrated SHAP-based Explainable AI and evaluated performance using false positive/negative rates and latency benchmarks; authored for ICICC 2025 publication.
Education
B.Tech in Computer Science and Engineering
PES University, Karnataka, India
8.54CGPA
On track
Achievements
Prof. C N R Rao Merit Scholarship
Awarded for academic excellence at PES University.
Certifications
Cybersecurity - Basics of Red Teaming
Fundamentals of ethical hacking, reconnaissance, exploitation, and post-exploitation techniques.