Sajan Bisht
AI/ML Engineer
Building scalable systems at the intersection of AI and full-stack engineering.
I'm a software engineer who loves solving hard problems at the intersection of distributed systems and machine learning. Whether it's training neural retrieval models that serve millions of recommendations or building real-time backends that handle thousands of concurrent connections, I care about systems that are fast, reliable, and genuinely useful to the people who use them.
Featured Projects
A selection of things I've built — filter by category
2024–2025Snaplit
Full-Stack Social Media Platform
Scalable social platform with feeds, reels, stories, profiles. WebSocket real-time notifications, CDN-backed media pipeline, Redis caching.
2026Dealify
Multi-Site Product Price Comparison & Availability Tracker
Full-stack price comparison engine scraping 8+ e-commerce sites. REST + GraphQL aggregation, Redis caching slashing load by 70%, AWS deployment.
2025URL Shortener
Scalable REST Service
Production-grade URL shortener using Spring Boot, PostgreSQL, and Redis. Base62 encoding, sub-5ms redirects, 5K req/sec throughput.
The Journey
Milestones along the way
Started B.Tech CSE
Graphic Era University, Dehradun
Began my engineering journey with a focus on Computer Science. Achieved 8.9 CGPA while diving deep into DSA, System Design, and competitive programming.
Joined GEU Tech & Dev Society
Backend Engineering Lead
Took on leadership as Backend Engineering Lead, guiding a 4-member team building campus applications for 1,000+ students. Ran workshops on distributed systems and REST APIs.
LeetCode 1500 Rating
600+ Problems Solved
Reached 1500 rating on LeetCode with 600+ problems solved across graphs, DP, greedy, trees, and binary search. Also hit 1500 on Codeforces.
LLM Fine-Tuning Research
QLoRA & DPO on Mistral-7B
Fine-tuned Mistral-7B with QLoRA achieving 23% MMLU gain and 65% GPU memory reduction. Applied DPO alignment and exported to ONNX INT8 for 2.3x throughput.
Built Snaplit
Full-Stack Social Media Platform
Developed a scalable social platform with feeds, reels, stories. WebSocket real-time notifications, Redis caching, CDN-backed media pipeline, Docker + GitHub Actions CI/CD.
Anitenka Recommendation System
Neural ML System in Production
Built a Two-Tower neural retrieval model on 7.8M interactions. FAISS ANN + ONNX Runtime at sub-5ms inference. Full MLOps loop with MLflow, DVC, Prometheus.
DocuMind RAG Agent
Production AI Pipeline
Hybrid RAG pipeline reducing hallucination 38%. Autonomous LangChain agent achieving 91% task-completion. 300+ concurrent sessions on AWS Lambda.
NPTEL Certification
Parallel & Multicore Systems — IIT Kharagpur
Completed SWAYAM NPTEL course on Parallel & Multicore Systems from IIT Kharagpur. Also completed AR/VR Development from IIT Guwahati.
Infosys DSE Selection
Digital Specialist Engineer Role
Selected for Infosys Digital Specialist Engineer role — one of the competitive on-campus placements offered to top engineering students.
ServiceNow Virtual Internship
Now Platform Development
Completed hands-on development labs on the ServiceNow Now Platform covering workflow automation, scripting, and application development.
Dealify Price Tracker
Full-Stack Scraping Engine
Launched Dealify — scraping 8+ e-commerce sites with Puppeteer & Playwright. 70% reduction in scrape load with Redis caching. REST + GraphQL aggregation layer.
Competitive Programming
Where algorithms meet the clock
LeetCode
Codeforces
GitHub
CodeChef
AtCoder
Tech Stack
Tools I use to build and ship
Languages
Frontend
Backend
AI/ML
Databases
DevOps & Tools
GitHub Activity
Currently Building
What's on my workbench right now
Anime Streaming Platform
Full-stack streaming service with ML-powered recommendations
Dealify v2
Expanding to 15+ e-commerce sites with real-time price alerts
Experience & Education
Where I've been and what I've done
Virtual Intern
Jun 2026 – Jul 2026ServiceNow
- ▸Completed hands-on development labs on the ServiceNow Now Platform
- ▸Covered workflow automation, scripting, and application development
- ▸Built custom applications using Now Platform tools and APIs
Backend Engineering Lead
Aug 2023 – PresentGEU Tech & Dev Society
- ▸Led a 4-member team building campus applications for 1,000+ students
- ▸Organized 5+ workshops on Spring Boot, distributed systems, REST APIs, and system design
- ▸Enforced structured code reviews and Git-based workflows, improving delivery efficiency by 25%
- ▸Coordinated module design and pull-request reviews across team members
B.Tech Computer Science & Engineering
Jan 2023 – May 2027Graphic Era University, Dehradun
- ▸CGPA: 8.9/10.0
- ▸Coursework: Data Structures & Algorithms, System Design, Distributed Systems, ML/DL, DBMS
- ▸Active member of the Tech & Dev Society; led backend team on multiple college projects
Class XII (Senior Secondary)
2022School
- ▸Scored 90.8% in Class XII board examinations
Class X (Secondary)
2020School
- ▸Scored 91.2% in Class X board examinations
Selected — Digital Specialist Engineer (DSE)
2026Infosys
- ▸Selected for Infosys Digital Specialist Engineer role
- ▸One of the competitive on-campus placements offered to top engineering students
My Resume
Download or preview my latest resume
Sajan_Bisht_Resume.pdf
Last updated: July 2026 · PDF · ~232 KB
Let's Connect
Have a project or opportunity in mind?
sajanb225@gmail.com · +91 9760759903 · Dehradun, India