Exceptional software for the modern web.
Coder designs and builds web applications, AI-powered products and websites for startups and enterprises, on React, Next.js, TypeScript and the latest AI models.
Services
What we build.
From a first prototype to a product in production, we design, build and ship software for startups and enterprises.
Web Applications
Production web apps and SaaS dashboards on React, Next.js and TypeScript.
AI Integration
LLM features and tool-calling agents, connected to your product and your data.
Data and Backends
Postgres and Supabase backends, APIs, integrations and data pipelines.
Websites
Fast, accessible marketing sites on Next.js and headless CMS.
Built with
ReactNext.jsTypeScriptNode.jsPostgresSupabaseVercelWork
Trusted around the world.
Coder has built for international organisations, universities, banks and hosting companies. Its sister company RentSight runs on the same stack.
Trusted by
RentSight Pty LtdSister CompanyRentSight
Competitive market intelligence and explainable AI pricing for US student housing and multifamily. Daily market surveys, fused with the demand signals in your PMS, built on the same React, Next.js, TypeScript and Postgres stack we use for client work.
Founder
Saša Forić
Founder and CEO of Coder and RentSight. Founder of 
Foric.
Saša is a software engineer with more than 20 years of experience building for the web. He founded Coder to design and build software for clients, from startups to enterprises, and RentSight to bring competitive market intelligence and explainable AI pricing to US student housing and multifamily.
- Experience
- 20+ years in software engineering
- Based in
- Sydney, Australia
Start a project.
Tell us what you’re building, or ask us anything. Email us.