We Build Mission-Critical SaaS

METATAG OÜ is an engineering-driven company founded by a developer with continuous hands-on production experience since 1997.

We specialize in building and operating complex systems that sit deep inside our clients’ businesses — platforms that must remain stable, controllable, and economically viable for years.

• SaaS product architecture & development
• High-load backend systems
• Streaming & real-time data pipelines
• Hardware-integrated and edge-based systems
• Geo-spatial data platforms
• API-first platforms & integrations

We don’t outsource responsibility.
We design systems that continue working when conditions become non-ideal.

Many companies can write code.
Few can design systems that survive scale, pressure, and time.

• Continuous production experience since 1997
• Systems that outlived multiple technology cycles
• Practical understanding of infrastructure failure scenarios
• Clear view of real-world scaling limits beyond benchmarks
• Experience operating under regulatory and operational constraints
• Preference for simplicity over trends
• Control instead of fragile abstractions
• Long-term system ownership mindset

We build platforms meant to exist for years — and to remain understandable and controllable throughout their lifetime.

Our approach is based on one principle:
technology must serve the business — not the other way around.

• Architecture before implementation
• Explicit threat and failure modeling
• Measurable performance, not assumptions
• Predictable behavior under load
• Business rules treated as first-class system components

We design systems that engineers respect — and businesses can rely on.