Tanmay Mathur

Senior Software EngineerUnited States

Senior engineer who ships software that

moves numbers.

Senior Software Engineer with 5+ years building high-impact React and TypeScript products. Open to remote. Every engagement I take on, the numbers move.

LinkedInGitHub
Scroll
StackReactTypeScriptNext.jsGraphQLMicro FrontendsMonorepoAWSFramer MotionWebpackJestPlaywrightReact Testing LibraryDatadogNode.jsFigmaClaude APIAccessibility (WCAG 2.1)
By the numbers

Every project I ship
moves a number.

01
$0M+

Annual subscription revenue

supported through frictionless payment onboarding

02
0%

LCP / TTI improvement

via Webpack optimization, code-splitting & lazy-loading on high-traffic pages

03
0%

Monitoring coverage expanded

integrating Datadog & FullStory across frontend channels

04
0%

User engagement increase

leading 6 engineers to ship a multi-client analytics platform at 100× scale

Measured in production at BILL and Standard Chartered. Not projections. Not estimates.

Career

From trading floors
to FinTech products.

I started in enterprise banking systems at Standard Chartered — integrating RBI trading infrastructure with Groovy and Java. Then Rice University. Then BILL, where I've been shipping product that touches $272M in annual recurring revenue. Every jump made me a better engineer.

Feb 2023 – PresentHouston, TX

Senior Software Engineer

at BILL
  • Integrated 'Add Credit Card' onboarding flow using VGS for PCI-compliant billing, supporting $272M+ annual subscription revenue
  • Improved page performance 65% via Webpack optimization, code-splitting, and lazy-loading
  • Integrated Datadog and FullStory, expanding monitoring coverage by 70%
  • Led a team of 6 frontend engineers to ship a multi-client analytics platform for accounting firms, 100× the data scale of a standard reporting feature, driving +40% user engagement
  • Served as Scrum Master; partnered with product, design, and backend teams across a 15+ person cross-functional squad
  • Drove GraphQL adoption and optimized Apollo Client caching policies, reducing redundant query calls by 30% and improving perceived load times
  • Standardized TanStack Table and Highcharts usage across BILL's frontend engineering org, defining best practices adopted as the de facto approach for all data-heavy features
May – Aug 2022Houston, TX

Software Engineer Intern

at BILL
  • Built an analytics dashboard for cross-functional squads to visualize user journeys
  • Integrated Datadog Cloud Monitoring with an AngularJS frontend
Jun 2019 – Jun 2021India

Developer

at Standard Chartered Global Business Services
  • Full Stack Developer in the Technology & Innovation Unit for Financial Markets, part of the Razor Agile Squad, a multi-year global programme to automate and accelerate the trade life cycle across international markets
  • Engineered a Groovy + ReactJS integration connecting RBI's NDS Call System with Razor to automate Call/Notice Loan/Depo deal processing, unlocking $10M in additional weekly transaction volume for Razor India
  • Built a Java standalone tool to auto-generate trade cancellation messages during legacy-to-Razor country Rollouts, reducing the risk of incorrect regulatory reporting by 85%
  • Prototyped an in-house project engagement tracking system using ReactJS and SpringBoot REST APIs, cutting turnaround time for project queries by 40%
Dec 2022

Master of Computer Science

Rice University · GPA 3.9 / 4.0

May 2019

B.Tech, Electrical & Electronics Engineering

VIT University · GPA 9.36 / 10.0

Selected work

Problems I've solved
from the ground up.

The Solution

A multi-client analytics dashboard giving accounting firms a unified view across all clients simultaneously. Built with TanStack Table for virtualized rendering of ~10k rows without degradation, and Highcharts after a structured library evaluation across functionality, performance, and enterprise support. An AI insights layer surfaced patterns firms couldn't see in raw data.

Engineering Decisions

  • Led a team of 6 frontend engineers to deliver a market-differentiating feature on schedule
  • Solved 10k-row rendering at scale using TanStack Table virtualization. No pagination, no lag
  • Ran a structured charting library evaluation; selected Highcharts for enterprise support, customizability, and large-dataset export capabilities
  • Surfaced cross-client data: TPV amounts, bills processed, staff approval rates, operational bottlenecks
  • AI-powered insights layer identified patterns and improvement areas across firm operations
  • +40% user engagement uplift post-launch; adopted as a flagship feature for accounting firm clients
  • Set org-wide standards for TanStack Table and Highcharts, becoming the reference implementation for all data-heavy features at BILL

AI Fluency

I don't just use AI tools — I build surfaces for AI to use.

Claude Code and GitHub Copilot accelerate my development. The Invitewaale MCP server I published lets Claude create invites and manage RSVPs without touching a single button. That's a new kind of frontend engineering.

About

CS from Rice.
Built to scale.

I hold a Master of Computer Science from Rice University (GPA 3.9) — one of the top-ranked CS programs in the US. Before that, I was building full-stack financial systems at Standard Chartered, integrating enterprise trading infrastructure across global markets.

That foundation is why I build differently. I don't just ship features — I think about system design, data pipelines, and the invisible architecture that lets a product scale. At BILL, that meant owning performance engineering, driving GraphQL adoption with Apollo Client caching strategies, and setting org-wide standards for data-heavy table and charting tooling adopted across the entire frontend org.

I've also served as Scrum Master for my frontend team while doing deep performance engineering work simultaneously. The ability to lead people and optimize systems at the same time isn't common. I think of it as the whole job.

What makes me different

Computer science depth

Rice CS gave me the rigor to reason about systems, not just implement them. I think in algorithms, complexity, and correctness — then translate that into fast, resilient product code.

Friction-first thinking

Before I write a line of code, I ask: where is the friction? Every project I've shipped has been about removing a step someone was stuck on.

AI at both ends

I use AI to write faster (Claude Code), and I build products that AI can operate (MCP server). Most engineers are on one side of this line.

Visible + invisible craft

My best work is invisible. The 65% perf gain nobody noticed because the page just felt fast. The $272M funnel that just... worked.

Skills & Tools

Core Stack

ReactTypeScriptNext.jsGraphQLJavaScript ES6+

Engineering

Apollo ClientWebpackPerformance OptimizationMicro FrontendsMonorepoAWSCI/CD

Testing

JestReact Testing LibraryCypressPlaywrightA/B Testing

AI & LLM

Claude APIGemini APIMCP ServerClaude CodeGitHub Copilot

Observability

DatadogFullStorySentryVGS

Also fluent in

ReduxNode.jsAngularSQLFigmaAccessibility (WCAG 2.1)
a11y

I build to WCAG 2.1 AA — semantic HTML, keyboard navigation, focus management, and ARIA where native semantics fall short. Accessibility isn't a checklist item; it's part of the definition of done.

Get in touch

Currently open to
Senior Frontend
opportunities.

Remote-firstSenior / Staff ICReact + TypeScriptAvailable now

5+ years building high-impact React and TypeScript products at FinTech scale. I'm looking for product-focused teams where engineering quality drives measurable business outcomes.

tanmay.mathur97@gmail.comDownload Resume