Available for new opportunities
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SOFTWARE ENGINEER

Aryan Tomar

Results-driven Software Engineer and LLM Engineer with hands-on experience building scalable backend systems using Java and Spring Boot, and architecting LLM-powered automation pipelines. With a B.Tech specialization in Big Data Analytics, I combine large-scale data engineering with LLM tooling to automate complex, multi-step workflows — getting more done in less time. Proven track record of migrating legacy systems, optimizing database performance, and shipping secure REST APIs that handle high transaction volumes.

View my workGet in touch
10K+
Daily transactions served
152
Jobs auto-scraped & ATS-scored
35%
Faster data retrieval
8.79
B.Tech CGPA
SPRING BOOT✦LLM ENGINEERING✦REST APIs✦BIG DATA ANALYTICS✦REACT✦NEXT.JS✦WORKFLOW AUTOMATION✦SYSTEM DESIGN✦PLAYWRIGHT✦POSTGRESQL✦SPRING BOOT✦LLM ENGINEERING✦REST APIs✦BIG DATA ANALYTICS✦REACT✦NEXT.JS✦WORKFLOW AUTOMATION✦SYSTEM DESIGN✦PLAYWRIGHT✦POSTGRESQL✦
01

About me

I'm a software engineer & llm engineer focused on the parts of software people rely on but rarely see — secure APIs, resilient data layers, and systems that stay fast under real production load.

At FINDI Bankit I ship Spring Boot services that move 10K+ transactions a day, modernize legacy Struts modules, and tune SQL until it's quick. I also enjoy the frontend craft — building responsive React & Next.js interfaces that make those backends feel effortless.

Delhi, India

Education

SRM Institute of Science and Technology

B.Tech — Computer Science (Specialization in Big Data Analytics)

CGPA: 8.79 · Jun 2020 — Jun 2024

Highlights

  • LLM Engineer — builds automated, multi-step pipelines that process big data and cut manual effort.
  • Problem Solving — HackerRank (Java, SQL)
  • Strong foundation in Data Structures & Algorithms
  • Contributed to production migration of legacy Struts modules to Spring Boot
02

Experience

Where I've been building and shipping production software.

Software Engineer

Aug 2024 — Present

FINDI Bankit Pvt. Ltd. · Delhi

  • Developed and maintained scalable REST APIs using Spring Boot handling 10K+ daily transactions.
  • Migrated legacy Struts-based modules to Spring Boot, improving performance by 25%.
  • Optimized complex SQL queries, reducing data retrieval time by 35%.
  • Built secure authentication systems using Spring Security (role-based access).
  • Engineered the AEPS agent onboarding integration — an end-to-end Aadhaar KYC pipeline integrating iServeU & NSDL APIs with biometric capture.
  • Developed React-based frontend modules including OTP verification & voucher flows.
  • Collaborated in agile teams, ensuring high-quality releases with QA & Postman testing.
03

Backend Projects

Production-grade, API-driven systems built with Java & Spring Boot. Each links to its live service / API documentation.

Job Assistant Bot (LLM Automation)

A full-stack automation platform that streamlines the job hunt on Naukri — combining LLM-driven profile automation, large-scale job scraping, and ATS (Applicant Tracking System) scoring.

  • Built an LLM-powered automation pipeline that auto-updates profile headline, skills & summary using Playwright with persistent sessions.
  • Scraped & analyzed 152 jobs with ATS scoring (avg 73.7%) and a 68.6% average interview-probability signal to surface best-fit roles.
  • Designed a Spring Boot 3.3.5 (Java 17) backend with 51 API operations over a PostgreSQL store of 30 tables, 11 migrations & 97 indexes.
Spring Boot 3.3.5Java 17Next.jsPlaywrightPostgreSQLNode.jsLLM Engineering

CAPS Portal

Enterprise financial portal modernization — refactored a legacy Struts application into clean, service-layered Spring Boot REST APIs.

  • Enhanced a legacy Struts-based application by developing Spring Boot REST APIs.
  • Redesigned the backend using clean architecture & service-layer patterns.
  • Implemented exception handling, validation, and standardized API contracts.
JavaSpring BootReact.jsNext.jsMySQL
Live API Docs

B2C IRCTC Ticket Booking System

End-to-end train ticket booking platform with fare calculation, payment processing, and full booking lifecycle management.

  • Integrated backend APIs for ticket booking, fare calculation, and transaction handling.
  • Implemented the complete booking lifecycle: passenger details → payment → confirmation.
  • Handled API integration, error handling, and validation for a smooth booking experience.
JavaSpring BootReact.jsMySQLREST APIs
Live API Docs

AEPS Onboarding Pipeline

Aadhaar Enabled Payment System agent onboarding — an end-to-end KYC pipeline integrating iServeU APIs with NSDL for biometric verification.

  • Built a multi-step onboarding flow: Status Check → OTP Generation → OTP Validation with biometric fingerprint capture.
  • Integrated biometric devices (Mantra, Morpho, Startek) via the RD Service SDK.
  • Handled journey status codes to support retry flows, OTP resend, and resumption of incomplete onboarding.
JavaSpring MVCJSP/JSTLREST APIsAES-256Biometric SDKNSDL / iServeU

m-Swasth Wellness Platform

Healthcare & wellness platform with secure, scalable Spring Boot APIs powering digital wellness services and user engagement.

  • Developed backend API services using Spring Boot for secure and scalable data handling.
  • Implemented authentication, form validation, and REST API integrations.
  • Optimized application performance through modular architecture and clean coding.
JavaSpring BootNext.jsMySQLREST APIs
Live API Docs
04

Frontend Demos

Interactive, client-side experiences built with React, Next.js, and real-time web technologies.

Real-Time Video Streaming App

A Twitch-like live streaming prototype built with WebRTC & SFU concepts, featuring peer-to-peer video and real-time chat.

  • Built peer-to-peer video streaming and real-time chat using Socket.io.
  • Developed Node.js signaling services for session and connection management.
  • Managed room creation and event-driven communication between clients.
React.jsNext.jsWebRTCSocket.ioNode.js

IRCTC Booking Experience

Responsive ticket booking UI with OTP verification, live booking summaries, and a seamless multi-step reservation flow.

  • Built a responsive React.js frontend for searching, booking, and managing tickets.
  • Implemented OTP verification and real-time user interaction patterns.
  • Designed the booking summary and confirmation experience.
React.jsReact Router DOMReact BootstrapSweetAlert2
Live

m-Swasth Wellness UI

Accessible, performant wellness frontend built with Next.js — focused on user engagement and smooth digital wellness journeys.

  • Built responsive frontend components using Next.js for better UX and accessibility.
  • Implemented authentication flows and form validations on the client.
  • Integrated REST APIs for seamless, data-driven user interactions.
Next.jsReact.jsREST APIs
Live
05

How I Work

A clear, repeatable process — from understanding the problem to shipping measurable results.

01
STEP 01

Understand & Architect

Deep-dive into goals, data, and constraints. I map the domain, model the data, and design clean service-layer architecture before a line of code is written.

02
STEP 02

Build & Automate

Ship secure REST APIs and resilient pipelines. Where work is repetitive, I layer in LLM engineering and automation so multi-step flows run themselves.

03
STEP 03

Optimize & Ship

Tune queries, index hot paths, and harden auth. Iterative, tested releases with observability baked in — measurable performance, every time.

06

Skills & Tooling

The technologies I reach for when building and shipping software.

Languages

JavaSQLJavaScriptHTMLCSS

Frameworks & Libraries

Spring BootSpring MVCSpring SecurityHibernateJDBCReact.jsNext.jsReact Router DOM

Backend & System Design

REST APIsService Layer DesignDatabase OptimizationSecure AuthenticationScalable Architecture

LLM & Automation

LLM EngineeringLLM APIsWorkflow AutomationPlaywrightBig Data AnalyticsATS / Data Pipelines

Emerging Tech

WebRTCSocket.ioReal-Time SystemsNode.js

Databases & Tools

MySQLGitPostmanMySQL WorkbenchVS Code

07 — Contact

Let's build something great.

I'm open to backend, frontend, and full-stack roles. Have a project or an opportunity in mind? My inbox is always open.

tomar.aryan16j@gmail.com
GitHubLinkedIn+91-8077951299