About
I build software for people who run businesses.
I'm Ryan DiMascio. I've built websites, stores and software since 2017, at agencies, startups and product companies.
At Luxury Presence I built a multi-tenant Next.js platform that serves 30K+ sites and 10M+ requests/day. Before that I led frontend work at 10up for Blackstone, Stanford and Holt International.
I also work full time as a software engineer, so I keep this to a small number of clients and reply to every request within one business day. You always deal with me, not a team you've never met.
Experience
Where I have worked.
Every builds an all-in-one finance and HR back office for startup founders.
Luxury Presence makes websites, a CRM and marketing tools for residential real estate agents, teams and brokerages. I joined as a UI tech lead and grew into platform and developer experience work.
Senior Software Engineer II, Developer Experience
- Built CLI tooling for 80 engineers to run the microservices locally with Docker, Node.js and process-compose. Setup went from hours to minutes.
- Shipped AI-assisted engineering workflows with git worktrees and PR stacking, for faster delivery and code review.
- Released ephemeral environments, so each feature is tested in isolation with no staging conflicts.
- Built an internal plugin system so teams adopt the same tooling.
Senior Software Engineer, Fullstack
- Built and scaled a multi-tenant Next.js platform that serves 30K+ websites, for clients such as Ryan Serhant, Josh Flagg and the Umansky Team.
- Designed horizontally scalable infrastructure on Docker, Kubernetes and Argo CD, serving 10M+ requests/day.
- Cut p95 latency on property pages by 87%, from 2.3s to 300ms.
- Cut the incident rate by 60% with health checks, graceful shutdowns and monitoring.
- Added Playwright tests and Artillery load tests to CI/CD.
Software Engineer, Frontend
- Led the move from a legacy Ruby on Rails app to Next.js and TypeScript: 300k users across 10k sites, with zero downtime.
- Designed a monorepo of independently deployed microservices, and contributed to the GraphQL API gateway behind the web and React Native apps.
- Built the UI component library and design system with TypeScript, React, Radix, Vite and Storybook.
Senior UI Engineer, Tech Lead
- Delivered a production-ready website template for the Ryan Serhant partnership within 30 days.
- Made template development 20% faster with a token-based design system.
- Built tooling for the creative team: a Git-to-Postgres sync, a Vite and React preview app, and a deployment CLI.
Experiments · built solo
Hackweek demoNatural language home search
Type a home search the way you would say it. The search turns it into real listing filters.
- Queries like "miami oceanfront under …" or "3 beds rental in palm springs with a pool"
- Fills in place, listing type, beds and property type, then shows matches on the map
- Built solo on a real estate listing site
Hackathon demoAI-assisted local development app
A desktop app that sets up a workspace of repositories, runs the services, and turns a plain request into a reviewed code change.
- Create a workspace from several repositories and start each service in one click
- Ask for a change, such as "Improve the webpack build time"
- Read the research and the plan, approve it, then review the issues it finds before a pull request
- Built solo
10up crafts websites and tools for content creators, with deep WordPress work.
- Led frontend development and served as tech lead for enterprise clients, including Blackstone, Stanford and Holt International.
- Ran the technical project work: sprint planning, requirements, estimates and coordination across teams.
- Championed JavaScript best practices and WCAG 2.1 AA accessibility across the engineering team.
- Contributed to company open source packages and mentored frontend engineers.
Nov 2018 – Jan 2021
Channel Bakers
Frontend Engineer
Rebuilt an Amazon Advertising B2B SaaS product with modular components, built a component library for an Amazon landing page builder used by Samsung, Calvin Klein and HP, and wrote an open source performance monitoring library.
Nov 2017 – Oct 2018
Lender Homepage
Frontend Developer
Built responsive landing pages and a component library for a PHP CMS serving 3,000+ active customers, and managed client hosting, SSL, DNS and email.
Skills
- Frontend
- ReactTypeScriptNext.jsCSS ModulesTailwindshadcn/uiRadixViteStorybook
- Backend
- Node.jsPostgresExpressGraphQLApolloNest.jsPrismaDrizzle
- Infrastructure
- DockerKubernetesAWSTerraformCI/CDVercelArgo CD
- Tools
- GitNx and monoreposPlaywrightArtilleryPostman