S
SUJAL AHARSoftware Dev
Full-Stack & AI SystemsNIT Raipur • IT 2023–2027

BUILDING SOFTWARE THAT SOLVES REAL PROBLEMS.

I am Sujal Ahar, a software developer focusing on full-stack architecture, high-throughput backends, and AI-powered applications.

Currently studying Information Technology at National Institute of Technology Raipur. Passionate about competitive programming with 1,400+ problems solved and robust system design.

Explore ProjectsGet in Touch
AI Intelligence
RAG, FastEmbed & Qdrant
Full-Stack Systems
Next.js, React & FastAPI
1,400+ CP Problems
Knight & Specialist Ranks
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Featured Work

Selected Projects

Focused engineering projects spanning AI codebase exploration, invoice processing pipelines, and cryptographic security.

Codebase EngineFastEmbed + Qdrant
Execution Path & Retrieval
SystemLens
40x Faster Ingestion (4.91s)
Hit@1: 75%MRR: 0.75

SystemLens

2025–2026

AI-powered repository intelligence platform for natural-language codebase exploration, execution-path tracking, and commit-level Git history intelligence.

Next.jsFastAPIPythonQdrantFastEmbed
View Repository
INVOX AI Invoice Pipeline
CodeUtsava 9.0 Runner-Up

INVOX

November 2025

Automated invoice ingestion and OCR/NLP extraction pipeline with confidence scoring and hybrid RAG querying — Overall Runner-Up at CodeUtsava 9.0.

PythonNext.jsTypeScriptPostgreSQLChromaDB
View Repository
VAULT Armor Cryptographic Architecture
AES-256-GCM + Argon2id

VAULT Armor

March 2026

Cryptographically isolated multi-vault password manager featuring AES-256-GCM encryption, Argon2id key derivation, and JWT access control.

ReactTypeScriptNode.jsExpressMongoDB
View Repository
02
Algorithmic Growth & Mastery

Competitive Programming

A verified journey of continuous problem-solving across 1,400+ algorithmic challenges, achieving LeetCode Knight and Codeforces Specialist.

Aggregate Solved
1,400+
Across LeetCode, CF & CodeChef
LeetCodeKnight
1890
Top 5.02% Global • 482 Solved
CodeforcesSpecialist
1456 / 1465
31 Rated Rounds • 463 Solved
CodeChef3-Star
1680
Rated Div 2 • 455+ Solved

Historical Rating Progression

Official contest ratings over time • Hover any point to inspect performance

Showing 31 verified contests from Jul 2024 to Jun 2026 • Hover any marker for round details
Specialist (1400)Pupil (1200)Jul 2024Mar 2025Jun 2026
Peak Achieved: 1465 (Specialist)
Continuous algorithmic advancement from NIT Raipur

LeetCode

@SUJALAHAR
Peak Rating / Designation
1890Knight

Knight Badge • Top 5.02% Global Percentile • 482 Solved

Verified AccountView Profile→

Codeforces

@suzziahar
Peak Rating / Designation
1456Specialist

Specialist Rank • 31 Rated Rounds • 463 Solved

Verified AccountView Profile→

CodeChef

@sujalahar
Peak Rating / Designation
16803-Star

3-Star Coder • Rated Division 2 • 455+ Solved

Verified AccountView Profile→
03
Industry Internship

Work Experience

Practical engineering experience developing full-stack web platforms, responsive user interfaces, and REST API services.

Software Developer Intern

Grow Even
May 2026 – July 2026Remote / Hybrid
Engineering Contributions:
  • Engineered a responsive investment poll platform using React and modern component design.
  • Integrated RESTful backend services and endpoints built with Node.js and Express.js for real-time polling data.
  • Developed intuitive workflows for participating in investment polls, submitting responses securely, and viewing instant aggregated analytics.
JavaScriptReactNode.jsExpress.jsHTML5CSS3REST APIs
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Core Competencies

Technical Skills

Comprehensive technical stack covering system software, full-stack web engineering, database architecture, and computer science foundations.

Programming Languages

C / C++DSA & CP
PythonAI & FastEmbed
SQLPostgres & SQLite
JavaScriptES6+
TypeScriptStrict Typing

Frontend Development

ReactComponents
Next.jsApp Router
Tailwind CSSDesign Tokens
HTML5 & CSS3Responsive
MotionTransitions

Backend Development

Node.jsRuntime
Express.jsREST APIs
FastAPIAsync Python
RESTful APIsStateless
JWT & Argon2idSecurity

Databases & Vector Stores

PostgreSQLRelational
MongoDBDocument
SQLiteWAL Mode
QdrantDense Vectors
ChromaDBEmbeddings

Developer Tools

GitVersion Control
GitHubCI/CD
PostmanAPI Testing
FastEmbedLocal ONNX
ZodValidation

Operating Systems

Linux / UnixCLI & Servers
WindowsEnvironment

Core CS Coursework

Data Structures & AlgorithmsAdvanced
Operating SystemsConcurrency
Computer NetworksProtocols
DBMSACID & Schema
OOPDesign Patterns

Technical Interests

System DesignArchitecture
Competitive ProgrammingAlgorithms
AI PlatformsRAG & Search
CryptographyZero-Knowledge
05
Honors & Responsibility

Achievements & Leadership

National hackathon recognition, algorithmic milestones, and leadership in institute sports administration.

National Hackathon Honor
November 6–7, 2025

Overall 1st Runner-Up • CodeUtsava 9.0

Organized by Turing Club of Programmers (TCP), NIT Raipur & Smart India Hackathon

Competed against teams from universities nationwide with team Vibe Coders. Engineered INVOX, an automated AI invoice ingestion and OCR/NLP extraction pipeline, solving real-world enterprise accounting challenges under intense 24-hour hackathon conditions.

Team Vibe CodersNational-LevelINVOX PipelineNIT Raipur
CodeUtsava 9.0 Certificate of Achievement - Sujal Ahar
Official Certificate of Achievement • 1st Runner-Up
1,400+ Solved

1,400+ Algorithmic Problems Solved

Consistent algorithmic practice across dynamic programming, graphs, trees, and math, achieving LeetCode Knight (1890) and Codeforces Specialist (1456 / 1465).

Competitive Programming Platforms

Institute Leadership & Positions of Responsibility

Head CoordinatorSeptember 2025 – Present

Head Coordinator

Shaurya Sports Committee, NIT Raipur

Leading institute-wide sports tournaments, managing registrations, match fixtures, logistics, and inter-college championships.

Tournament logistics, registration systems, and fixture operations
Inter-branch & inter-college team coordination and ceremonies
ExecutiveFebruary 2025 – September 2025

Executive Coordinator

Shaurya Sports Committee, NIT Raipur

Assisted in the operations and management of Samar Fest, the annual official sports festival of NIT Raipur.

Tournament logistics, registration systems, and fixture operations
Inter-branch & inter-college team coordination and ceremonies
06
Academic Background

Education

Undergraduate engineering studies in Information Technology at the National Institute of Technology Raipur.

National Institute of Technology Raipur

Bachelor of Technology (B.Tech) • Information Technology
Program
Undergraduate
2023 – 2027Raipur, Chhattisgarh
Core coursework in OS, Networks, DBMS, OOP, and Distributed Systems.
Active participant in technical symposiums, hackathons, and CP rounds.
07
Get In Touch

Let's Build Something

Have an interesting problem to solve, an architectural discussion, or a software opportunity? Feel free to reach out directly.

Direct Channels

Email Address
sujalahar@gmail.com
Location
Raipur, Chhattisgarh, India
Professional Networks
GitHubLinkedIn

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Direct Mail Dispatch

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