Where 404 Becomes Legend.
We engineer custom software, digital products, and AI systems — turning complex problems into technology teams can rely on.
- Systems in production
- Full-stack + AI
- Architecture-first delivery
A software engineering studio, not a website shop.
404 Legends builds custom software, web and mobile applications, enterprise systems, and AI-powered products for organizations that need technology they can rely on. We take a problem from first conversation to a system running in production — and stay accountable for how it holds up.
Every hard problem starts as a 404 — something missing, broken, or unsolved.
- A missing piece
- A broken system
- A workflow no one has automated
- A problem no one has solved yet
What we bring to it — engineering discipline and the standard we hold every build to.
- Production systems, not prototypes
- Architecture that survives scale
- Code we can hand over and support
- Judgment on what to build — and what not to
- Education platforms
- Queue & operations systems
- Internal tools & dashboards
- Automation & AI workflows
What we build
One team across the full stack — from the architecture decisions down to the last deployment.
Software Engineering
Custom systems built around real business requirements — not templates.
Web Applications
Scalable, responsive, production-ready web platforms.
Mobile Applications
Cross-platform and native apps that ship to real users.
System Architecture
APIs, databases, integrations, and infrastructure designed to scale.
Automation
Repetitive workflows turned into reliable automated systems.
AI & Intelligent Systems
AI-powered applications, computer vision, and intelligent workflows.
System Integration
Connect existing systems, APIs, databases, and third-party services.
Engineering process
Six stages, run in the open — you always know what we're on and what's next.
Discover
Map the real problem, constraints, and what success looks like.
Architect
Design the system, data model, and integration boundaries.
Build
Engineer it in reviewable increments with tests alongside.
Test
Validate against real scenarios, edge cases, and load.
Deploy
Ship to production with monitoring and a rollback path.
Evolve
Maintain, optimize, and scale as the system earns its keep.
Real work, shipped and running.
A selection of systems we've engineered end to end. Open any project to read its full technical README on GitHub.
The stack behind the work
We choose technology based on the problem, not the trend — and go deep on a focused set rather than chasing every new tool.
- LANGUAGES
- Python
- JavaScript
- TypeScript
- FRAMEWORKS & RUNTIME
- React
- Next.js
- Flutter
- Node.js
- .NET
- Laravel
- DATA
- PostgreSQL
- SQL Server
- Firebase
- Supabase
- PLATFORMS & AI
- Cloud Platforms
- AI / ML
Have a problem worth engineering a solution for?
Tell us what you're building and where it's stuck. We'll come back with how we'd approach it — scope, stack, and the risks worth knowing about.