HSE is an Athens-based engineering company. We build production systems for banks, energy operators, public-safety authorities and government agencies: work that has to clear audit, run 24/7, and be defensible under regulatory scrutiny.
We take on engagements from short discovery sprints to multi-year production builds. Typical work: agents and copilots over your own data, real-time data backends, ML pipelines that have to pass audit, replatforming systems that have outgrown their original architecture.
HSE has been a delivery partner in EU framework programmes since FP7. We design work packages that ship into production, not white papers. Strong fit with HE clusters 3, 4 and 5 around explainable AI, federated learning, and operational digital twins.
Commercial clients
Public sector
Research & academic
Three featured systems in long-running production. Each one points to a fuller write-up on the case-studies page.
A proprietary binary-protocol backend that streams Athens Stock Exchange data into e-banking with sub-second latency. Production for years.
Read case study →Investigation tools for European law-enforcement tackling cryptocurrency-facilitated crime. Built around transparent, explainable AI. No black boxes.
Read case study →An IoT framework bringing federated learning and swarm computing across cloud-to-edge continuum to unlock untapped grid flexibility.
Read case study →Domain-specific copilots, RAG over your own data, and agentic workflows for ticket triage, document review and reconciliation. Built with your privacy boundary intact.
Real-time market data backends, credit and fraud models, interpretable AI that passes audit, not just demo day. Two decades of Greek banking experience baked in.
Building- and grid-level intelligence with IoT, federated learning, and digital twins of physical infrastructure. Working today inside EU Horizon Europe consortia.
Explainable AI for law-enforcement workflows: blockchain analytics, maritime surveillance, travel intelligence. Co-designed with the agencies that use it.
Clinical software, health data interoperability and AI-assisted decision support for hospitals and research. Built to integrate, comply and evolve.
Modern data stacks, governance frameworks and cloud architectures that hold up over the long term. Designed for compliance and scale.
HSE has been a delivery partner in Horizon and Horizon Europe consortia since FP7. We design research work packages that live in production, not just white papers. If you are shaping a proposal under HE clusters 3, 4 or 5, we can co-design the work package and ship the result.
See all EU projects →HSE was founded in 1999 as an NTUA spin-off and has been shipping into Greek banking, government and public-sector environments ever since. Privately held, deliberately small, senior team in the room.
From core banking integration through to live market-data infrastructure that has survived multiple platform generations.
Current Horizon Europe portfolio across energy, security and the digital twin agenda. Research that lands as code, not slides.
An NTUA spin-off by origin and by hiring pipeline. Strong bench for the kind of work where the maths still matters.