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Roble Siyad.

I build things for the web.

Software engineer focused on building clean, reliable web applications from front to back.

View my workcontact →

about

Hi, I'm Roble. I'm a software engineer who enjoys taking ideas from a rough sketch to something real people can use. I care about readable code, fast feedback loops, and interfaces that stay out of the user's way.

When I'm not writing code, I'm usually digging into how things work under the hood, or tinkering with side projects that let me try new tools.

experience

Software Development Engineer @ Expedia Group

Mar 2026 – Present

  • Build pricing components in Java and Scala that apply taxes, fees, and currency exchange across Expedia Group brands.
  • Led delivery of QuoteEdit 2.0, a fee-adjustment service, driving a 42% increase in client usage.
  • Shipped tax components in the central pricing response, validated by replaying production traffic.

Software Engineer Intern @ Meta

Jun 2025 – Sep 2025

  • Owned SSO, user management, and 2FA features for Managed Meta Accounts, built with Hack, React, and GraphQL.
  • Shipped Admin Codes, an emergency 2FA flow that cut internal support queries by 82%.
  • Integrated WhatsApp as a 2FA channel with smart SMS fallback, doubling deliveries and saving ~$1,200/day.

Software Developer @ DEFRA

Jan 2024 – Jun 2025

  • Replaced a legacy Water Abstraction system with a Node.js, Hapi, PostgreSQL, and AWS tool, boosting data workflows by 55%.
  • Revamped unit testing with reusable seed data, cutting local test and CI times by 37.5%.
  • Created 20+ PostgreSQL views and built 15+ GOV.UK design-compliant pages with Nunjucks.

projects

exchange.rvsiyad.dev

featured project

exchange

A mini trading venue: orders enter through a REST gateway, cross in an event-sourced matching engine over Kafka, settle as two-phase transfers in TigerBeetle, and stream back to a live order-book dashboard over WebSockets.

  • Java
  • Kafka
  • TigerBeetle
  • WebSockets
  • Docker
[github][live]
scope.rvsiyad.dev/ui

featured project

scope

An OpenAI-compatible LLM gateway with an observability stack built from scratch: write-ahead log, Gorilla-compressed time-series storage, trace store, and a PromQL-lite query engine feeding live dashboards. Point any OpenAI SDK at it with one line.

  • Go
  • Docker
[github][live]

other projects

rvsiyad.dev

This site: a one-page portfolio built with the Next.js App Router, Tailwind CSS v4, and zero client-side JavaScript.

  • Next.js
  • Tailwind CSS
[github]

contact

Get in touch

My inbox is always open, whether it's about an opportunity, a project, or just to say hello.

Say hello[github][linkedin]