Portfolio · 2025

Available for work

Viju Sanjai

Software Developer

  • Location Chennai, India
  • Education ECE @ VIT · '27
  • Focus Systems & Web
  • Currently LFX Mentee @ urunc
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  • 05 Projects
  • 01 Internship
  • 50+ Mentored
  • — PRs
  • 8.16 GPA
Selected Work
Open Source
— Merged — Open
Experience
Sep 2024 – Feb 2025 Chennai, TN

Software Development Intern

Lagoon Technologies
  • Engineered and optimised internal enterprise tools in C# and .NET within an Agile environment.
  • Conducted architectural analysis of legacy systems, identifying bottlenecks to improve maintainability and release velocity.
  • Collaborated in daily SDLC discussions to align software architecture with enterprise scalability requirements.
Sep 2026 – Present Remote

LFX Mentee — Fuzzing & Robustness Testing for urunc

CNCF · LFX Mentorship, Term 3
  • Extending urunc's test and fuzzing coverage to harden the container runtime's reliability, predictability, and error reporting.
  • Wiring fuzz targets into CI, working toward continuous coverage via OSS-Fuzz / ClusterFuzzLite.
  • Mentored by Charalampos Mainas and Anastassios Nanos (Nubificus).
Research

BFT Consensus — Communication Demand Modeling

Independent Research
  • Derived and validated a closed-form model predicting communication demand in BFT consensus protocols, tested against chained HotStuff, CometBFT, and libhotstuff (4–32 nodes, 50 runs each).
  • Max residual of 4.2 × 10⁻⁴ against real implementation measurements, with predictions locked before testing.
Jan 2025 – Present Research

Adaptive Quantum-Chaotic Steganography

Independent Research
  • Developing a steganography protocol combining BB84 quantum key distribution with a chaotic-diffusion layer and an intrusion-detection classifier.
  • Working demo notebook with QBER and chaos-diffusion visualizations; manuscript and classifier validation in progress.
2023 – Present VIT Chennai

Community & Leadership

OSPC · Code Chef · Linux Club · Google Developers
  • OSPC Research Lead — Mentored 50+ students on Git, collaborative development, and kernel-level fundamentals.
  • Code Chef Developer — Built and maintained the competitive programming platform with Express.js and Cloudflare.
  • Linux Club — Competed in campus-wide CTF tackling system-level and cryptographic challenges.
  • Google Developers Club — Led front-end development for the campus portal, ran web technology workshops.
Education
B.Tech

Vellore Institute of Technology

Chennai, Tamil Nadu
8.16 GPA

Electronics & Communication Engineering

Aug 2023 – Present · Expected 2027
  • Systems architecture, kernel development & embedded systems coursework
  • Research on BFT consensus modeling and quantum-chaotic steganography (BB84 + deep learning)
  • Research Lead at OSPC · Developer at Code Chef · Linux Club CTF competitor
Core focus
  • ⬡ Systems Programming
  • ⬡ Full-Stack Development
  • ⬡ Cryptography & Security
  • ⬡ Machine Learning
  • ⬡ Embedded & Firmware
  • ⬡ Distributed Systems
  • ⬡ WebAssembly & Compilers
4th Year
8.16 GPA
'27 Graduating
About
Viju Sanjai

A little about me.

I'm Viju Sanjai, a B.Tech student in Electronics and Communication at VIT Chennai, building at the intersection of systems programming and full-stack development. I care about writing software that's fast, correct, and deliberately crafted — whether that's a GPU video pipeline or a browser-native PDF editor.

Previously a software development intern at Lagoon Technologies, working on enterprise tooling in C# and .NET. Outside of work I research BFT consensus and quantum-chaotic steganography, mentor students on Git and open-source practices, and dig into low-level challenges through CTFs.

  • Rust
  • TypeScript
  • React
  • C/C++
  • Python
  • Go
  • WebGPU
  • Tauri
  • Cloudflare
  • Docker
  • AWS
  • Linux
Contact

Let's work together.

Open to internships, freelance work, and interesting collaborations. If you have something in mind, I'd love to hear it.

Email
Location Chennai, India · GMT+5:30
Status Available for work
Response Usually within 24h

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