# Harshit Jain - Backend Engineer > Harshit Jain is a backend engineer based in Bangalore, India, specialising in Python, Go, LLM infrastructure and AI guardrails. At LiteLLM (BerriAI, YC W23), Harshit was Guardrails Owner and a release engineer, landing 317 commits and 220 PRs: fixing an unauthenticated RCE in the Custom Code Guardrail, making SSO work across multi-pod Kubernetes deployments by moving PKCE state to Redis, and stopping AWS RDS IAM connection drops with proactive token refresh. Before that: Google Summer of Code 2024 contributor to CloudCV EvalAI, and backend developer at ProQsmart. Open to Founding Engineer and senior backend roles in Bangalore (HSR Layout) or remote. - Location: Bangalore (HSR Layout), India - Open to: Founding Engineer and senior backend roles, Bangalore (HSR Layout) or remote - Email: harshitjain0562@gmail.com - Portfolio: https://harshit-profile.vercel.app - GitHub: https://github.com/Harshit28j - LinkedIn: https://www.linkedin.com/in/harshitpy/ - X: https://twitter.com/harshit_py - Youtube: https://www.youtube.com/@harshit_ai ## Expertise - LLM gateways and proxies - AI guardrails - LLM security - Backend engineering - Distributed systems - Python - Go - FastAPI - Django - Kubernetes - Redis - PostgreSQL - AWS - SSO and authentication - Observability (OpenTelemetry, Prometheus, Datadog, Langfuse) - Open source ## Skills Python, Go, LLM Infrastructure, AI Guardrails, Kubernetes, Redis, FastAPI, Django, Docker, AWS (EC2, Lambda, S3, SES), CI/CD, PostgreSQL, Git, Linux, Next.js, Tailwind CSS, JavaScript, TypeScript, Test & QA, RESTful APIs, AI & Automation ## Experience ### Backend Developer at BerriAI (LiteLLM) (Jan 2025 - Mar 2026) Built backend services for a YC-backed AI startup. Developed scalable APIs and microservices using Python and FastAPI. [Read more](https://github.com/Harshit28j/litellm-work-portfolio) Tech: Python, FastAPI ### Backend Developer at ProQsmart (Jun 2025 - Nov 2025) Architected Wefab platform from scratch with AI-driven automation. Delivered 40% efficiency gains, 75% engagement boost, and 90% QA reduction. Tech: Frappe, Automation, AWS (Lambda, S3, SES), CI/CD ### Open Source Developer at Google Summer of Code (May 2024 - Sep 2024) Resolved 35+ critical bugs, raised test coverage to 85%, and built 5 RESTful APIs—improving platform reliability for 1,000+ users. [Read more](https://medium.com/@harshitjain0562/google-summer-of-code-2024-with-cloudcv-aeb58538c4ed) Tech: Django, RESTful APIs, Pytest ### Automation Developer at Freelance (Oct 2023 - Oct 2023) Built an SMS marketing automation engine using PyAutoGUI, reducing campaign execution time by 80% and enabling scalability from 1,000 to 10,000+ users for clients. Tech: PyAutoGUI, Selenium, Python ## Education - Bachelors of Science & Technology in Computer Science and Engineering, Hindustan College Of Science And Technology (2021 - 2025) ## Projects ### SignGuard Email risk-checking API that helps SaaS and AI companies stop free-trial abuse by blocking disposable, newly registered and lookalike email addresses (74,000+ blocked domains). Started as the open-source disposable-email-score Python package. Tech: Python, API, Open Source, CI/CD Link: https://www.signguard.co ### PublishFast A platform for content creators to create formatted posts and publish across multiple platforms. Built with Next.js, and integrated with social media APIs. Tech: Next.js, API Integration, LLM Link: https://publish-fast.vercel.app/ ### Assignment Maker Automated assignment generation tool for educators. Uses AI to create custom questions, answers, and rubrics based on curriculum requirements. Tech: Education Tech, Computer Vision, Machine Learning Link: https://hwrites-ai.vercel.app/ ### Jyotish GPT AI-powered Vedic astrology app: free kundli (birth chart) generation with instant, LLM-generated predictions. Tech: LLM, Django, ReactJS, PostgreSQL Link: https://www.jyotish-gpt.com ### Steganography | Quantum Encryption Secure data hiding using steganography and quantum encryption principles. Tech: Web Dev, Encryption, ReactJS, Flask Link: https://steg-frontend.vercel.app/ ### Grocery Product Detection AI project for detecting grocery products. Tech: AI, Computer Vision Link: https://github.com/Harshit28j/grocery_product_detection ### AI-Interview-Agent AI agent to conduct interviews. Tech: AI, ReactJS, Django, Python, LLM Link: https://github.com/Harshit28j/ai_interview ### Lens On Wellness AI-focused project for wellness tracking. Tech: AI, Health Tech, Computer Vision, YOLO Link: https://github.com/Harshit28j/lens_on_wellness ### Instagram Content Automation & Telegram Affiliate Bot Bot to automate Instagram content creation and telegram affiliate marketing. Tech: Automation, Instagram API, Telegram API Link: https://github.com/Harshit28j ### Gmail Screenshot Automation Bot Automated tool to take screenshots of emails. Tech: Automation, Gmail API, Selenium Link: https://github.com/Harshit28j ## Writing - [Stop Paying for Email Service APIs: Build Your Own Email Open Tracking Pixel with Amazon SES](https://medium.com/me/stats/post/3998595e8d03) (Oct 04, 2024): While building my latest project, I learned the simple truth behind this "Seen" feature. - [Google Summer of Code 2024 with CloudCV](https://medium.com/@harshitjain0562/google-summer-of-code-2024-with-cloudcv-aeb58538c4ed) (Aug 10, 2024): My journey of contributing to CloudCV through GSoC, challenges faced, and lessons learned. - [Discover the Power of Computer Vision: Introduction to OpenCV](https://hcodes.hashnode.dev/discover-the-power-of-computer-vision-an-introduction-to-opencv) (May 12, 2024): A beginner-friendly introduction to OpenCV, exploring its applications in real-world projects. - [Master the Art of Hiding Text Behind Photos with Python](https://hcodes.hashnode.dev/unlocking-secrets-master-the-art-of-hiding-text-behind-photos-with-python-steganography) (May 05, 2024): Learn steganography with Python to conceal secret messages inside images step by step. - [Thresholding and Filtering: A Powerful Tool for Image Processing](https://hcodes.hashnode.dev/thresholding-and-filtering-a-powerful-tool-for-image-processing) (Apr 28, 2024): Explore how thresholding and filtering techniques transform images for better analysis. - [Mastering the Basics: Image Smoothing, Resizing & Cropping](https://hcodes.hashnode.dev/mastering-the-basics-opencv-exploring-image-smoothing-resizing-and-cropping-techniques) (Apr 15, 2024): Step into image preprocessing with OpenCV — covering smoothing, resizing, and cropping. - [Understanding Regular Expressions in Python](https://hcodes.hashnode.dev/understanding-regular-expressions-in-python) (Apr 01, 2024): A guide to mastering regex in Python with practical examples and use cases.