Senior Fullstack Engineer - Performance & Security Focus

Vivek Kumar Srivastava

Fullstack Engineer

+91-912******* ć ***********************@*****.*** a github.com/Viv786ek ] linkedin.com/in/viveksde

Delhi, India

Summary

Frontend focused full stack (MEAN/MERN) engineer with 4.5 years delivering scalable, high performance web apps

using React, Angular, and Node.js/Express. Improved first load by 25–35% via lazy loading and code splitting,

shipped secure OAuth 2.0/OIDC (MFA/OTP), and maintained 90%+ automated tests. Strong in cross browser

UX, accessibility (WCAG), reusable component design, and CI/CD delivery in Agile teams.

Skills

Programming Languages: JavaScript (ES6+), TypeScript, C++

Frontend: React (Hooks, Context, Redux), Angular 12-18 (RxJS, NgRx, Material), HTML5, CSS/SCSS, MUI,

Tailwind CSS, Bootstrap

Backend/DB: Node.js, Express, REST APIs, MongoDB, PostgreSQL, Redis

Testing/Tools: Jest, Jasmine, Karma, Playwright, Git/GitHub, Postman, Jira, Chrome DevTools, GitLab

CI/CD, SonarQube, Splunk

Experience

Concentrix Catalyst Apr 2025 – Present

Software Engineer II Hyderabad, India

– Led high performance Angular 17 authentication and MFA flows for a large scale telecom IAM platform; improved UI

speed and task completion by 30%.

– Built secure identity modules (Login > MFA > OTP > ID Verification) with Reactive Forms, route guards, and HTTP

interceptors aligned to internal standards.

– Implemented scalable OAuth 2.0/OIDC; reduced token/API errors by 40%; improved initial load by 35% via NgRx, lazy

loading and code splitting.

– Increased automated test coverage to 90%+ (Jest, Jasmine/Karma) and strengthened GitLab CI/CD with Sonar gates,

lowering MTTR by 20%.

– Award: Excellence (2025) for impactful UI optimization and reliability improvements.

BridgeNext Sep 2021 – Mar 2025

Software Development Engineer Pune, India

– Built scalable React/Angular apps with RxJS/NgRx/Redux/Material; improved performance by 30%; reduced initial

load by 25% using code splitting.

– Migrated legacy Polymer to React to reduce technical debt and improve maintainability; optimized Node.js integrations

for 20% faster data access.

– Enhanced cross browser responsiveness (+15% engagement); led audits with Chrome DevTools and Lighthouse; sustained

90%+ tests (Jasmine/Karma/Jest).

– Mentored junior engineers; drove component reuse and cleaner architecture; received Spot Awards (2022, 2023) and

Excellence Award (2024).

Projects

AI Powered Fitness App ReactJS, OpenAI, APIs

– Personalized workout planning via OpenAI; Material UI and responsive design improved user retention by 15%.

– Demo GitHub

Food Delivery App MEAN Stack (MongoDB, Express, Angular, Node.js)

– Developed tagging, cart, authentication, and secure payments; optimized backend APIs for reliability and speed.

– GitHub

Education

Netaji Subhash Engineering College 2017 – 2021

B.Tech in Information Technology CGPA: 8.3 / 10

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