Headline

Senior Frontend Engineer | React · JavaScript · CSS | Building Fast, Scalable, User-First Web Apps

About

I build fast, scalable, and user-first web applications — and I've been doing it for 10+ years across healthcare, diagnostics, and enterprise software. Currently a Lead Engineer at Cognizant, I specialize in React.js, JavaScript, and modern frontend architecture. I've led end-to-end development of complex features used by millions of users, guided cross-functional teams through technical decisions, and mentored engineers to grow beyond their comfort zones. What I bring to the table: → Deep frontend expertise in React, JavaScript, CSS, NestJS, Webpack, and micro front-end architecture → A track record of delivering high-impact features on time, at scale → The ability to bridge business goals with clean, maintainable code → Hands-on experience in regulated, high-stakes domains (Beckman Coulter, EY) I don't just write code — I take ownership of outcomes. Whether it's optimizing performance, simplifying a complex UI, or helping a junior engineer unlock their potential, I show up where it counts. I hold an Oracle Certified Professional (Java SE 6) certification and a Master's in Computer Science. Open to Senior or Staff Frontend Engineer roles where I can build products that genuinely matter. Let's connect — sanjivjangid@live.com

Location

Bengaluru

AI stack

claude code

claude

gemini

github copilot

ChatGPT

Work experience

Manager Project at Cognizant, May 2025 - Present · 1 yr 5 mos, Bengaluru, Karnataka, India

Senior Technical Lead at ACL Digital, Dec 2023 - May 2025 · 1 yr 6 mos, Bengaluru, Karnataka, India

Senior Software Engineer 2 at Beckman Coulter Diagnostics, Jul 2021 - Dec 2023 · 2 yrs 6 mos, Bengaluru, Karnataka, India

Technical Lead at EY, Oct 2020 - Jul 2021 · 10 mos, Bengaluru, Karnataka, India

Associate Technical Lead at EY, Apr 2019 - Oct 2020 · 1 yr 7 mos, Bengaluru, Karnataka

Software Engineer at Pratham Software (PSI), Mar 2017 - Apr 2019 · 2 yrs 2 mos, Jaipur, India

Software Developer at OnGraph Technologies Limited, Jun 2015 - Feb 2017 · 1 y 8 mo, Jaipur

Education

Master's Degree, Computer Science, Pratap University, Jaipur

Bachelor of Science (B.Sc.), Mathematics, University of Rajasthan

Public links

github: https://github.com/sanjivjangid

medium: https://medium.com/@sanjivjangid