Senior UX Engineer — Design Systems & Developer Experience

KousiganMoni

I build the design systems, React component libraries and developer handover practices that keep enterprise products consistent — and the teams behind them shipping faster. More than a decade across financial services and enterprise SaaS, working as the connective tissue between product, design and engineering.

  • Based inChennai, India
  • Local time—
  • FocusDesign systems · DX · Accessibility
  • CurrentlySenior UX Engineer, FE fundinfo
  • 12+ years in product design & UX engineering
  • Enterprise design system strategy & governance
  • React component libraries at scale
  • Design tokens & UI standards
  • Accessibility (WCAG) embedded in the system
  • Developer handover & DX platforms
  • AI-assisted design systems
  • Agentic UI platforms
  • Automated UX workflows
  • Mentoring UX engineers & designers

/01 Expertise

What I do, and how I do it

Systems, not screens.

01 Systems over one-offs

Design Systems

Strategy and governance end to end — component architecture, design tokens, documentation and adoption. I build platforms teams reuse, not artefacts they file away.

  • Governance
  • Component architecture
  • Design tokens
  • Documentation
  • Adoption
02 Speaks the language of code

Design Engineering

I sit on both sides of the handover. Reusable React component libraries, UI standards, and specs engineers can build from without a follow-up call.

  • React
  • Component libraries
  • HTML/CSS
  • PWAs
  • Dev handover
03 Built in, not bolted on

Accessibility

Compliance stops being a project when it lives inside the component library. I embed WCAG frameworks into the system so every team inherits it by default.

  • WCAG
  • Inclusive patterns
  • Audit & remediation
04 Bridging design and code

Developer Experience

Shared standards, tooling and a common language between design and engineering — so quality goes up while delivery time goes down.

  • DX platforms
  • Tooling
  • Shared standards
05 AI-native workflows

AI in the SDLC

Integrating AI into how products get designed and built: AI-assisted design systems, agentic UI platforms and automated UX workflows that remove manual effort.

  • AI-assisted systems
  • Agentic UI
  • Automation
06 Force multiplier

Leadership

Mentoring UX engineers and designers, running critiques, and consulting across Agile teams. I make the people around me faster, not just the codebase.

  • Mentoring
  • Critique
  • Agile consultation

/02 Selected Work

Draft · sample figures

Three problems worth solving.

Each card is a real thread of my work at FE fundinfo — the problem, what I owned, what shipped, and what changed as a result.

Draft — placeholder metrics & images. The problems, roles and deliverables below are real. The figures and screenshots are samples, filled in so the finished shape is visible. To publish: swap the numbers in portfolio/index.html, drop your own images into portfolio/assets/ (reuse the filenames, or update the three <img src> paths), then delete this notice.

Placeholder screenshot of a design system component library showing buttons, text fields, cards, badges, tabs, a modal, a table, toasts and navigation patterns.
Component library · Figma + ReactSample
Design System · Enterprise SaaS

Owning a design system across multiple products

Strategy, governance and adoption for an enterprise design system spanning several product teams — component architecture, design tokens and the UI standards teams build against.

  • 6Product teams on the system
  • 142Published components
  • −60%Design-to-build time
My role
Design system strategy & governance · component architecture · token definition
What shipped
Reusable React component libraries, design tokens and UI standards consumed across product teams

Sample figures — replace with your verified numbers.

Placeholder screenshot of an accessibility scorecard showing WCAG AA contrast ratios, focus ring and semantics checks, and issues by severity before and after remediation.
WCAG 2.1 AA scorecardSample
Accessibility · Compliance

Making accessibility the default, not a sprint

Rather than running one-off audits, I embedded accessibility frameworks directly into the component library so compliance is inherited by every team using the system.

  • −85%Critical issues (214 → 31)
  • 100%New components ship AA
  • AATarget held, 3 product lines
My role
Accessibility frameworks embedded into the design system
What shipped
Improved accessibility compliance across product lines

Sample figures — replace with your verified numbers.

Placeholder screenshot of an AI-assisted design system pipeline: Figma variables, diff and validate, AI review pass, then publish, with a run log and effort metrics.
Token & handover pipelineSample
AI · Developer Tooling

Putting AI inside the design system workflow

Driving AI adoption across UX and engineering: AI-assisted design systems, agentic UI platforms and automated UX workflows that cut manual effort out of the parts nobody should be doing by hand.

  • 11hManual effort removed / sprint
  • 0Handover docs written by hand
  • 94sMedian pipeline run
My role
Driving AI adoption across UX and engineering workflows
What shipped
AI-assisted design systems · agentic UI platforms · automated UX workflows · developer tooling

Sample figures — replace with your verified numbers.

/03 Experience

2009 — present

A design journey of more than a decade.

FE fundinfo

Chennai, India · 12 yrs 1 mo
Senior UX EngineerCurrent Mar 2025 — Present
UX Engineer Sep 2023 — Present
Product Designer Jul 2019 — Nov 2023
Senior UI Designer Sep 2014 — Jun 2019

Earlier

Chennai, India
Web DesignerCareer Optionz Sep 2012 — Mar 2013
Web DesignerThe Connectorz Dec 2009 — Mar 2011

Education

2005 — 2009
B.Tech, Information TechnologySSN College of Engineering 2005 — 2009

/04 Toolbox

What I reach for

Tools are the easy part.

Design & prototyping

  • Figma — auto layout, variables, components
  • Sketch
  • InVision
  • Zeplin
  • Mural

Systems & engineering

  • React component libraries
  • Design tokens
  • HTML / CSS
  • Progressive Web Apps
  • Accessibility frameworks (WCAG)

AI & automation

  • AI-assisted design systems
  • Agentic UI platforms
  • Automated UX workflows
  • Developer tooling

Ways of working

  • Bridging product, design & engineering
  • Design critique
  • Mentoring
  • Agile team consultation

/05 Contact

Usually replies within a day

Let's build something
worth reusing.

Email me LinkedIn