Design engineer · Bengaluru, India

Arun Kumaar Sreenivasan

Arun Kumaar Sreenivasan (Kiruk) is a design engineer in Bengaluru, India. He is co-founder, director and founding design engineer of Spera (Spero Spera Private Limited), and was a Software Systems Engineer doing UX design engineering at HP Inc from 2023 to 2026.

Also known as Kiruk. Often typed as Arun Kumar Sreenivasan, Arun Kumar Srinivasan, Arun Kumar S: the name is spelled Kumaar, with two a's. Updated .

Quick facts

Role
Design Engineer
Works as
Design engineer, design technologist, creative developer, product designer who codes and freelance design consultant. Freelance, contract or full-time
Now
Co-founder, Director and Founding Design Engineer, Spera.bot (Spero Spera Private Limited), since February 2026
Before
Software Systems Engineer (UX Design Engineering), Innovation for India, HP Inc, Aug 2023 – Feb 2026
Education
Bachelor of Engineering, Computer Science and Engineering, Sona College of Technology, 2019–2023
Based in
Bengaluru, India. From Salem, Tamil Nadu. Works remotely.
Languages
English, Tamil
Works with
Design engineering, UX design, AI product design, Design systems, Interaction design, Front-end engineering, Prototyping, Motion design, Figma, React, Next.js, Three.js, WebGPU, WebGL, Shaders (TSL, GLSL), Creative development, Flutter

What he does

Design engineer in India

A design engineer designs an interface and builds it in production code. Arun works from Bengaluru, India, and owns both halves: Figma-led UX and the React, Next.js and TypeScript frontend that ships it.

  • Leads design and frontend end to end at Spera.bot since February 2026, with more than 330 commits to the production frontend.
  • Main UX design engineer on HP's Innovation for India team from 2023 to 2026.
  • Taught UX to more than 100 students and led three designers on Square Bridge, a student hiring platform with 150+ screens tested by 200+ people.

Three.js, WebGPU and creative development

Arun builds real-time 3D for the web with Three.js, the Three.js Shading Language (TSL) on WebGPU, and WebGL2 shaders, and keeps it fast enough to be a site's front door.

  • kiruk.in opens on a realistic 3D human eye written in Three.js TSL for WebGPU and drawn from a Web Worker through OffscreenCanvas, seen through ten eras of screen technology from 1970 to 2026, with a WebGL2 CRT opening.
  • prahatheesvar.in (PRAGS), a scroll-to-play instrument website for pianist Prahatheesvar, built with Three.js, Howler.js and GSAP.

AI UX design

Arun designs AI products so people trust them: interfaces that explain what the model will change before it changes it.

  • HP Print AI, the first printer experience built around AI, designed on HP's Innovation for India team.
  • Spera.bot, where traders build, backtest and paper trade crypto strategies without a developer; he designs its chat and MCP interface.

Design systems

Arun builds design systems as code and tokens, not only as Figma libraries.

  • Mudra, the design system and branding for HP's internal AI stack in Figma and Next.js, used by more than 500 employees.
  • Spera's brand, design system and tokens, built from the first week of the company.
  • Square Bridge Portfolio Builder at SNS Square raised student engagement 45% and cut recruiter discovery time 40%.

Career

  1. Co-founder, Director and Founding Design Engineer

    Spera (Spero Spera Private Limited) · Remote, India · Feb 2026 – present

    Leads design and frontend end to end for Spera.bot, a platform where traders build, backtest and paper trade crypto strategies without a developer: brand, design system, interface and production Next.js code.

  2. Software Systems Engineer (UX Design Engineering), Innovation for India

    HP Inc · Bengaluru, India · Aug 2023 – Feb 2026

    Main UX design engineer on HP's Innovation for India team: HP Print AI, the Mudra design system used by 500+ employees, Get my Prints (Flutter) and Print Learn Center (WhatsApp).

  3. Research & Development Intern

    HP Inc · Bengaluru, India · Feb 2023 – Jul 2023

    Built COE BOT, a Spring Boot tool that set up Splunk dashboards and alerts for fleets of IoT printers.

  4. Interaction Design Intern

    PeopleGamez · Remote · Nov 2022 – Jan 2023

    Made HR software feel like a game; drew 100+ game assets.

Education

Bachelor of Engineering in Computer Science and Engineering, Sona College of Technology, Salem, Tamil Nadu, 2019–2023.

Selected work

Case studies for Spera.bot, HP Print AI, the Mudra design system, Square Bridge and PeopleGamez are on the work page. His story, from Salem to Spera, is in the About box on the home page and as plain markdown. Essays live in the notebook.

Questions people ask

Who is Arun Kumaar Sreenivasan?

Arun Kumaar Sreenivasan (Kiruk) is a design engineer in Bengaluru, India. He is co-founder, director and founding design engineer of Spera (Spero Spera Private Limited), and was a Software Systems Engineer doing UX design engineering at HP Inc from 2023 to 2026.

What does Arun Kumaar Sreenivasan do at Spera?

Co-founder, Director and Founding Design Engineer since Feb 2026. Leads design and frontend end to end for Spera.bot, a platform where traders build, backtest and paper trade crypto strategies without a developer: brand, design system, interface and production Next.js code. Spera is the product of Spero Spera Private Limited, where he is a director.

What was Arun Kumaar Sreenivasan's role at HP?

Software Systems Engineer (UX Design Engineering), Innovation for India at HP Inc, Aug 2023 – Feb 2026, after an R&D internship there from February 2023. Main UX design engineer on HP's Innovation for India team: HP Print AI, the Mudra design system used by 500+ employees, Get my Prints (Flutter) and Print Learn Center (WhatsApp).

Where did Arun Kumaar Sreenivasan study?

Bachelor of Engineering in Computer Science and Engineering at Sona College of Technology, Salem, Tamil Nadu, 2019–2023.

Is Arun Kumaar Sreenivasan a Three.js developer?

Yes. Arun builds real-time 3D for the web with Three.js, the Three.js Shading Language (TSL) on WebGPU, and WebGL2 shaders, and keeps it fast enough to be a site's front door. kiruk.in opens on a realistic 3D human eye written in Three.js TSL for WebGPU and drawn from a Web Worker through OffscreenCanvas, seen through ten eras of screen technology from 1970 to 2026, with a WebGL2 CRT opening. prahatheesvar.in (PRAGS), a scroll-to-play instrument website for pianist Prahatheesvar, built with Three.js, Howler.js and GSAP.

What is a design engineer?

A design engineer designs interfaces and builds them in code. Arun pairs Figma-led UX design with production React, Next.js and Flutter engineering so prototypes ship as real products.

Who is Kiruk?

Kiruk is the name Arun Kumaar Sreenivasan works under. Kiruk Studio is his practice in Bengaluru, India: experimental websites, design tools and human-centered product experiences, plus a notebook of the thinking.

Is Arun Kumaar Sreenivasan the same person as Arun Kumar Sreenivasan?

Usually not. His name is spelled Kumaar, with two a's. Design engineer from Bengaluru, India; co-founder of Spera.bot (Spero Spera Private Limited); ex-HP Inc; Computer Science graduate of Sona College of Technology, 2023. Kumaar is spelled with two a's; GitHub and Google Scholar spell the surname Srinivasan. Other people named Arun Kumar Sreenivasan or Arun Kumar Srinivasan, with one a, are different people.

Is Arun Kumaar Sreenivasan available for freelance work?

Yes, selectively. He takes freelance and consulting work in AI UX, design systems, Three.js and front-end engineering, remotely from Bengaluru, for clients in India and abroad.

Profiles and contact

For freelance, contract or full-time work, see how to hire him or use the contact page.