10/07/2026 updated

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Full Stack Developer | Node.js, React.js, TypeScript & AI/LLM Integration

kolkata, India
Worldwide
B.Tech in Information Technology (expected 2027)
kolkata, India
Worldwide
B.Tech in Information Technology (expected 2027)

Profile attachments

Vikrant_Singh_Resume (2)ygpa.pdf

About me

B.Tech IT student and aspiring Software Engineer focused on Full Stack Development and AI-powered applications. Skilled in React.js, Node.js, MongoDB, SQL, REST APIs, Docker, AWS, DSA, and System Design. Exploring Generative AI, RAG, LLMs, embeddings, and vector databases.

Application Programming Interfaces (APIs)LAMP StackNode.jsAWS CLINext.jsSystems IntegrationTypeScriptWorkflowsReact.jsLarge Language ModelsGoogle FirebaseFull Stack DevelopmentReact NativeApi DesignArtificial Intelligence Markup Language (AIML)
Full Stack Web Development
Expertise in building API-driven web applications using Node.js, Express.js, Next.js, React.js, Redux Toolkit, TypeScript, HTML5, CSS3, and Tailwind CSS, with hands-on experience in server-side rendering and reusable component libraries.

Database Design & Management
Proficiency in MySQL, MongoDB, and Firestore, including schema design, joins, indexing, normalization, query optimization, and designing complex data models with composite indexes for optimized query paths.

AI / LLM Integration
Practical experience integrating large language models using LangChain, LangGraph, RAG, Vector Embeddings, GraphDB, and the Groq API to build intelligent, role-specific features such as interview question generation and transcript-based feedback pipelines.

Data Structures & Algorithms
Strong problem-solving fundamentals in Data Structures, Algorithms, and Object-Oriented Programming, demonstrated by solving 300+ questions on LeetCode and achieving 1st place at the Algothon GFG x NSEC competition.

REST API Design
Experience designing and implementing RESTful APIs with Node.js and Express.js, including Next.js API routes, tested and documented using Postman.

DevOps & Tooling
Familiarity with Git, GitHub, Kafka, Playwright, and Git-based branching workflows, including debugging, profiling, and QA cycles across codebases.

Data Ingestion Pipelines
Built Playwright-based job ingestion pipelines that collect, normalize, and deduplicate listings from multiple sources using content hashing with fuzzy title and company matching.

Authentication & Billing Integration
Implementation of Firebase Authentication with role-based access control and Razorpay-backed subscription billing in full-stack applications.

Experience

Professional experience0 - 5 years
Freelancer since2025

Languages

EnglishNative speaker

Project history

Developer - HireAI (AI-Powered Career & Recruitment Platform)

Personal Project
Built a Playwright-based job ingestion pipeline collecting listings from multiple sources, normalizing them into a single schema, and removing duplicates using content hashing. Designed Firestore data models across seven collections with composite indexes. Developed a full-stack recruitment platform with separate recruiter and job-seeker workflows used by 100+ users. Integrated an LLM via the Groq API (Llama) to generate role-specific interview questions. Engineered a transcript-based feedback pipeline producing structured output. Implemented Firebase Authentication with role-based access control and Razorpay-backed subscription billing. Tech stack: Next.js, TypeScript, Firestore, Groq API.

Developer - MovieLab (Movie Discovery Platform)

Personal Project
Built a responsive movie discovery platform with browse, dynamic search, and detail views backed by the TMDB API. Centralized application state in Redux Toolkit and cached fetched results, reducing redundant TMDB API calls by roughly 20% during typical navigation. Tech stack: React.js, Redux Toolkit, TMDB API.

Full Stack Developer Intern

Tending To Infinity
Built responsive, cross-browser web applications using Next.js, JavaScript, HTML, and CSS. Implemented server-side rendering and a reusable component library, improving Lighthouse performance scores by roughly 30% on migrated pages. Worked in a Git-based branching workflow; debugged and profiled across the codebase during code review and QA cycles.

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