Seamless API Integration

Connect your business systems with our high-performance gateway layer — reliable, scalable and built for Northern European enterprises.
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Data You Can Trust

Real-time data pipelines, event streaming and secure multi-cloud connectivity — engineered for compliance and performance.
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About Nordia Systems

Founded in Helsinki in 2014, Nordia Systems Oy specialises in API gateway architecture, middleware integration and cloud data connectivity. We help companies across Finland, the Nordics and the Baltics modernise their digital infrastructure — replacing legacy point-to-point integrations with robust, observable and maintainable API layers. Our team of 30+ engineers combines deep platform expertise with a pragmatic, delivery-focused approach that keeps projects on time and on budget.

API Gateway

Design and deploy production-grade API gateways with authentication, rate limiting, versioning and full observability across your microservices landscape.

System Integration

Connect ERP, CRM, payment and logistics platforms through a unified integration layer — reducing vendor lock-in and accelerating time-to-market.

Cloud Connectivity

Multi-cloud and hybrid-cloud architectures on AWS, Azure and GCP — with automated failover, traffic shaping and cost optimisation built in from day one.

Data Streaming

Real-time event pipelines powered by Kafka and Flink — enabling analytics, fraud detection and operational dashboards with sub-second latency.

Our Team

Our Helsinki-based engineering team brings together specialists in distributed systems, API design, DevOps and data engineering. Many of our engineers previously held senior roles at Tieto, Nokia and F-Secure, giving us a unique blend of enterprise experience and startup agility. We operate with flat hierarchy and short feedback loops — which means our clients always talk directly with the people building their solutions.

Nordia Systems is an ISO 27001 certified organisation and an active member of the Finnish Software and E-business Association (ohjelmistoyrittäjät). We take data security and GDPR compliance seriously, and all our infrastructure is hosted within the EU. Whether you need a single integration proof-of-concept or a company-wide API strategy, we have the depth and bandwidth to deliver.

Our Clients

We work with mid-market and enterprise clients across retail, logistics, finance and public sector. From fast-growing Finnish scale-ups to established Baltic manufacturers, our clients share one thing in common — a need for reliable, future-proof connectivity between their systems and partners.

Nordia Systems redesigned our entire payment API layer in under three months. The new gateway handles peak loads we previously could not even test for, and the monitoring dashboards finally give our ops team the visibility they have been asking for since 2019.

– Mikael Leppänen, CTO, Paylink Nordic Oy

We brought Nordia in to untangle a decade of point-to-point integrations between our WMS and three carrier APIs. They delivered a clean, documented integration hub in eight weeks. The project came in on budget and the team was a pleasure to work with.

– Sanna Mäkinen, Head of IT, Kuljetuspalvelu Harjula

After evaluating four vendors, we chose Nordia Systems for their honest assessment of our architecture and their hands-on delivery model. Six months later our API platform serves fifteen internal teams and four external partners without a single P1 incident.

– Andres Tamm, VP Engineering, Tallinn Digital Group

The Kafka streaming pipeline Nordia built for us processes over two million events per day. Latency dropped from twelve seconds to under 200 milliseconds. Our data science team can now build models on fresh data rather than yesterday's batch files.

– Hanna Virtanen, Data Platform Lead, Kopio Analytics

Seamless API Integration