Ishan Sharma

Co-Founder

San Francisco, California, United States4 yrs 8 mos experience

Highly Stable

Key Highlights

Built products impacting millions of developers.
Expert in AI-driven features and full-stack development.
Strong focus on product quality and user experience.

Stackforce AI infers this person is a SaaS-focused Full-Stack Developer with expertise in AI-driven solutions.

Contact

Skills

Core Skills

Next.jsRuby On RailsJavascriptFlutter

Other Skills

Adobe XDArduinoCascading Style Sheets (CSS)DartFirebaseFull-Stack DevelopmentGitGitHubInternet of Things (IoT)JavaMongoDBNode.jsPython (Programming Language)RedisTechnical Leadership

About

I’m a Senior Software Engineer at HackerRank, building products that help millions of developers practice, learn, and showcase their skills. My work spans across frontend, backend, and AI-driven features, always with a focus on product quality and user experience. I care about craft: from thoughtful engineering systems to small details that make products delightful. Over the years, I’ve built everything from large-scale developer platforms to quirky side projects like Hotspoter, a Windows app I made in high school that crossed 6M downloads. Outside of work, I speak at events and share learnings on engineering, AI, and design. I thrive in 0→1 environments, love working across the stack, and enjoy building things that make people’s lives easier.

Experience

Cardboard inc.

Co-Founder

Dec 2025 – Present · 3 mos · San Francisco Bay Area

Hackerrank

5 roles

Senior Software Engineer

Jul 2025 – Dec 2025 · 5 mos · Bengaluru, Karnataka, India

Next.js

Software Development Engineer II

Jan 2024 – Jul 2025 · 1 yr 6 mos · Bengaluru, Karnataka, India

Designed & built ‘HackerRank QuickApply,’ an AI-driven Chrome extension that autofills job applications and guides
users through ATS forms. Used 100K+ times for faster, error-free submissions.
Led Next.js migration, slashing JavaScript bundle size by 73%, and achieving a Lighthouse performance score of 99.
Developed an AI-powered mock interview platform with seamless voice & chat UX, whiteboards, Monaco editor, VSCode Web IDEs, and a custom Voice Engine.

Next.js

Software Development Engineer I

Jan 2023 – Jan 2024 · 1 yr · Bengaluru, Karnataka, India

Led the upgrade efforts of monolith from Ruby 2 to Ruby 3, driving the transition to a newer language version.
Dramatically enhanced app performance by implementing web workers, resulting in a remarkable 178% boost in speed
and efficiency
Conducted candidate interviews, playing a pivotal role in the recruitment of top-notch engineering professionals

Next.jsRuby on Rails

SDE Intern II

Jan 2022 – Jan 2023 · 1 yr · Bengaluru, Karnataka, India

Managed multiple projects and mentored 6 co-interns on new projects.
Scaled HackerDraw to handle a large number of users, added features such as real-time collaboration, user access management etc.
Started new initiatives in the company which laid the foundation of an entirely new ’Labs Team’ inside the company

JavaScriptRuby on Rails

Software Engineer Intern

Jun 2021 – Dec 2021 · 6 mos · Bengaluru, Karnataka, India

Single handedly built, designed scaled multiple products such as HackerDraw and HackerResume
Designed worked on a core workflow builder feature for the enterprise product offering, HackerRank For Work.

JavaScriptRuby on Rails

Indian institute of technology, kharagpur

Research Intern

Jun 2021 – Jul 2021 · 1 mo · Kharagpur, West Bengal, India

JavaScript

Pustack

Software Development Engineer Intern

Jul 2020 – Mar 2021 · 8 mos · San Francisco, California, United States

Under this role
I worked in a team of over eight people to build and provision scalable business infrastructure and customer solutions centered towards ed-tech industry.
I worked on a part of the flutter based mobile app, and on the entire web platform.
I designed & built user referral & user engagement analytic system for both of them to keep track of the watch seconds & position for each user, and derive enriched insights from those.
My primary tech stack for this role was Flutter, React, Firebase and Nodejs.

JavaScriptFlutter