// Software Engineer · NYC

Hi, I'm Herman. I build fast, high-impact products for the web.

Software engineer with 5+ years of experience building React and TypeScript applications across healthcare, fintech, and consumer products — improving UX, streamlining workflows, and shipping accessible experiences that scale.

Herman Rivas — Software Engineer
NYC · Engineer
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Building products that improve
speed, clarity, and experience.

I'm a software engineer based in New York with 5+ years of experience building web applications that balance product thinking, performance, and usability.

I've worked across fintech, healthcare, and consumer products, building tools that improved conversion, streamlined internal operations, and made complex workflows easier to use.

I'm especially drawn to work where strong frontend execution can directly improve both the user experience and the business.

JavaScriptTypeScript ReactReact Native Next.jsGraphQL Ruby on RailsNode / Express PostgreSQLMongoDB DockerAWS TailwindStorybook
5+
Years of experience
31%
Conversion lift at Figure
~99%
Faster contract creation at RxSense
NYC
Based in New York

Where I've
made an impact.

RxSense Full-Time
Software Engineer
RxSense is a healthcare technology company powering pharmacy benefit management through its modern adjudication platform RxIQ®, delivering real-time prescription pricing, analytics, and cost controls for health plans, PBMs, and pharmacies across the US.
  • Built and maintained internal PBM dashboard used across operations and analyst teams.
  • Utilized monorepo and microfrontend architecture to scale apps on the platform from 2 to 10.
  • Cut contract creation from days to minutes (~99% faster) by streamlining contract intake into a single-path submission with automated validation and instant user feedback, unlocking same-day pricing.
  • Migrated component stack from MUI to React Aria and removed CSS-in-JS, yielding DomContentLoaded −54–64% and Load time −48–57%, improving first-interaction latency and perceived speed.
  • Standardized an AI-assisted scaffold pipeline generating boilerplates, configs, and CI in one step — cutting spin-up time from days to minutes with consistent linting/testing/Storybook out of the box.
  • Built configurable settings UIs for healthcare parameters, increasing analyst throughput by 20% and reducing average query turnaround by ~12 minutes through improved defaults and batched network calls.
ReactTypeScriptReact AriaMicrofrontendsMonorepoStorybookPerformanceCI/CD
Figure Full-Time
Software Engineer
Figure is America's #1 non-bank HELOC lender, using blockchain to deliver a modern financial experience — faster approvals, lower costs, and transparent access to home equity, refinancing, and crypto-backed lending products. $20B+ in equity unlocked.
  • Delivered core features for a blockchain-based lending platform focused on home equity and refinance products.
  • Led a major frontend redesign (React, Tailwind, Rails) from Figma to production; architected refactors and rollout strategy enabling incremental migration without regressions.
  • Improved accessibility, elevating WebAIM ranking from top 25% to top 5% through structured audits, semantic markup, and ARIA corrections.
  • Led engineering work that improved consumer conversion on HELOC flows by 31% through UX optimizations and SEO improvements that raised impressions by 75%.
  • Built and maintained core UI modules with strong testing discipline and error budgets, reducing production regressions.
ReactTailwindRuby on RailsBlockchainAccessibilitySEO
HypeWala Full-Time
Software Engineer
HypeWala is a multi-platform marketplace for limited collectibles and streetwear, connecting buyers and sellers in the hype culture space.
  • Developed the frontend for a multi-platform marketplace for limited collectibles using React + Tailwind + Storybook.
  • Created and optimized modular React component systems and a TDD workflow, improving reusability, test coverage, and development velocity.
  • Strengthened a positive, blameless engineering culture through documentation, detailed PR descriptions, structured code reviews, and regular pairing sessions.
ReactTailwindStorybookTDDJest
CoronaCare USA Inc.
Frontend Web Developer / Volunteer
May 2020 — Dec 2020
Developed and improved frontend features for a nonprofit platform connecting volunteers with individuals needing pandemic-related support, streamlining access to resources and mutual aid services.
Operation Code
Software Engineer / Volunteer
Jan 2020 — May 2020
Mentored veterans transitioning into tech by explaining programming fundamentals, reviewing code, and helping them overcome blockers in their learning journey.

Things I've
built.

RxSense
RxSense PBM Platform
Built internal PBM tools that helped scale the platform from 2 to 10 apps through microfrontend architecture, while streamlining contract workflows that cut turnaround from days to minutes.
ReactTypeScriptMicrofrontends
rxsense.com ↗
Figure
Figure Lending Platform
Helped build a blockchain-based lending platform and led frontend redesign work that improved HELOC conversion by 31% and increased SEO impressions by 75%.
ReactTailwindRailsBlockchain
figure.com ↗
🅿️
Easy Parking
Built a parking web app designed to help drivers find street parking faster in busy cities, turning a frustrating real-world problem into a simpler user experience.
ReactRailsCSS
View on GitHub ↗
👟
SolelyKicks
Built a sneaker collection tracker that lets users catalog and manage their favorite pairs through a clean, easy-to-use interface.
ReactRailsHTML/CSS
View on GitHub ↗

Interested in building
something meaningful
together?

Open to software engineering opportunities where strong product thinking, frontend execution, and real user impact matter.