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DSAspire

Free Data Structures & Algorithms learning and coding-interview preparation platform.

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© 2026 DSAspire. All rights reserved.

Master DSA, one pattern at a time.

AKS
Creator of DSAspire

Ajay Kumar Saini

Full-Stack Developer

IIT Patna · India

Full-Stack Developer who builds production dashboards and ERP systems with Next.js, React, TypeScript, Node.js, Prisma and PostgreSQL. Strong in REST API design, RBAC authentication, third-party API integration (Google Drive, Gmail, WhatsApp Cloud), AI/LLM automation, Docker and AWS CI/CD.

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DSA problems solved
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CPI · IIT Patna
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Internships
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Users served
Toolbox

Technical skills

Languages

CC++PythonJavaScriptTypeScriptSQL

Frontend

ReactNext.js (App Router)Tailwind CSSRedux Toolkit

Backend

Node.jsExpress.jsREST APIsWebSocketsPrisma ORMJWT / RBAC

Databases

PostgreSQLMySQLMongoDBQuery Optimization

APIs & Integrations

Google DriveGmailWhatsApp CloudZohoGroq / OpenAIWebhooks

Cloud & DevOps

DockerAWS (EC2/S3)VercelCI/CDGitLinux
Journey

Experience

Full Stack Developer Intern

Jan 2025 – Present
METNMAT Innovations Pvt. Ltd.
Remote / India
  • Shipped a production ERP dashboard on Next.js, TypeScript, Node.js, Prisma and PostgreSQL across 7 modules — products, enquiries, quotations, orders, invoices, inventory and tasks.
  • Integrated WhatsApp Cloud API, Gmail API and Google Drive API for messaging, email-based OTP two-factor login and product media sync.
  • Built a 4-stage enquiry-to-invoice pipeline with server-side PDF/DOCX generation, RBAC-protected REST APIs and idempotent dry-run sync over a 150+ product catalog.

AI/ML Intern

Aug 2025 – Sep 2025
Docyt India Pvt. Ltd.
Remote
  • Engineered EDA and preprocessing pipelines and benchmarked ML models, cutting training overhead 28% and improving KPI alignment 11.5%.
  • Standardized feature-engineering and experiment-tracking workflows, accelerating model iteration 20%.

Research Intern

May 2025 – Jul 2025
IIT Jodhpur
Jodhpur, India
  • Simulated hot tearing in Al-206 with the CRC criterion, isolating a critical solid-fraction range of 0.88–0.96.
  • Validated predictive models against SEM/XRD analysis, improving casting yield 8.4%.
Build log

Featured projects

METNMAT Operations Dashboard

AI-Powered ERP & Product Automation

2025
  • Architected category- and product-wise Google Drive folder mapping, binding each product's media to its PostgreSQL record through two-way sync.
  • Added AI/LLM-assisted description and price-research workflows with confidence scoring, dry-run mode and audited upserts that protect internal pricing.
Next.jsTypeScriptPrismaPostgreSQLGoogle Drive APILLM APIs

Questivo

AI-Driven Assessment & Real-Time Streaming

Jan 2026
  • Built an AI assessment engine with the Groq SDK, using full-duplex WebSocket streaming and Redis queues to hold transaction isolation under 500+ concurrent requests.
  • Containerized with Docker and deployed via CI/CD on AWS EC2/S3 for scalable infrastructure.
Next.jsExpress.jsWebSocketsDockerAWSGroq SDK
Academics

Education

Indian Institute of Technology (IIT) Patna

B.Tech, Metallurgical & Materials Engineering

Aug 2023 – Present · CPI 7.82

Relevant coursework: Data Structures & Algorithms, DBMS, Machine Learning, OOP.

Leadership

Positions of responsibility

Technical Lead & Sub-Coordinator (Web & Development)

Dec 2024 – May 2026
Anwesha — Cultural Fest, IIT Patna

Architected the Next.js + PostgreSQL platform supporting 3,000+ active festival users.

Head of Sponsorship & RSP Management

Aug 2024 – Apr 2026
E-Cell & Celesta, IIT Patna

Managed corporate partnerships and cross-functional operations for the annual techno-management fest.

Milestones

Achievements & certifications

Selected for the Data & AI Operations Internship at Grindwell Norton Limited (Saint-Gobain Group).

Solved 650+ algorithmic problems across LeetCode and competitive-programming platforms.

Secured Top 2% of 1.2 Million+ candidates in JEE Advanced 2023.

Full-Stack AI Engineer: ML Foundations & Secure Python/Django — Udemy.

Why I built DSAspire

Having solved 650+ problems myself, I wanted one focused workspace that combined a curated catalog, pattern-based learning and honest progress tracking. DSAspire is that tool — free and open for everyone preparing for coding interviews.

Explore the platformView roadmaps