Making data accessible everywhere.
Simple. Reliable. Fast. Secure.
Engineered for reliable data movement
Weld was founded in Copenhagen in 2021 by Jonas Thordal and Kristian Barrett. They were early members of the startup success Pleo, where they were a part of building the company’s data infrastructure from the ground up. That experience shaped Weld’s mission: to deliver simple, fast, reliable, and secure ETL pipelines.


Breaking down scattered data
Modern companies run on dozens of SaaS tools, each creating its own silo of valuable data. Moving that data is complex and fragile. Pipelines break, insights get delayed, and teams end up working with partial truths. Weld’s mission is to make data movement effortless: bringing your company’s data where it’s needed, securely, reliably, and in near real-time, so every team can trust the same source of truth.
Built for global scale
Since Weld’s inception, we’ve raised multiple funding rounds from leading investors and business angels. Today, Weld’s data infrastructure supports the analytics, AI, and operational workflows of hundreds of data-driven teams in more than 20+ countries
Reliable infrastructure in the age of AI
The explosion of data with more sources, greater volumes and higher expectations makes reliability essential. In the age of AI, broken pipelines or delays do not just slow reports, they risk corrupting models and decisions. Weld now powers more than 150,000 daily data jobs and moves over 30 terabytes of data every single day with enterprise-grade SLA (99.9% uptime). This gives engineering teams the scale and trust they need to build AI-ready products and analytics.
1 zettabyte = 1 billion terabytes = 1 trillion gigabytes.
Source: Statista






Built by a passionate team
We are a small team of tech entrepreneurs passionate about data engineering and AI. We believe reliable data infrastructure is the foundation for the next generation of products and companies, and we are here to make it simple, powerful and accessible.
We're backed by forward-thinking investors
Frontline Ventures
Cherry Ventures
Innovation Fund Denmark

Des Traynor

Petr Janda

David Clarke
Get started with Weld
Spend less time managing data and more time getting real insights.