Small teams
Engagements are staffed by senior engineers who remain on the work from brief to operation. No handoff to a delivery pool.
Argyriou GmbH — Est. Zürich
We design, build and operate software, cloud and security systems. Our practice is engineering-first, deliberately small in scope per engagement, and unhurried in craft. Below is a survey of how we work and what we do.

Argyriou GmbH is an independent technology practice. We are engaged by companies and public-sector organisations to design software, run infrastructure, integrate systems, and make sense of data. Our engagements are typically multi-year and structured around outcomes rather than hours.
We do not chase novelty for its own sake. Most of the systems we build should be boring — predictable, observable and maintainable long after the initial delivery. That commitment shapes the technologies we choose, the way we document, and the way we handover.
Custom applications, APIs and internal tooling — designed to be read as often as they are written.
Architecture, provisioning and day-two operations on public and private cloud environments.
Hardening, threat modelling, identity and secure development lifecycles across the stack.
Pipelines, warehousing and reporting foundations that give teams a single, trustworthy view.
Connecting ERPs, CRMs and line-of-business software with reliable, well-documented interfaces.
Long-term maintenance, on-call rotations and lifecycle management for the systems we ship.

We are wary of the word "transformation". In practice, moving an organisation forward is rarely a single programme — it is a long sequence of technical and operational choices, each of which either compounds or corrodes the last. Our role is to help make those decisions carefully, document them clearly, and reverse them cleanly when the situation changes.
We work alongside internal teams rather than around them, contributing engineering capacity, review and mentorship where it is most useful.
Applications, APIs, internal platforms and command-line tools. We favour typed languages, modest dependencies and thorough tests. When we can justify it, boring is the correct answer.
Every project is designed so that another team could pick it up in two years without archaeology: clear boundaries, honest documentation, reproducible builds, real runbooks.

Infrastructure as code, reproducible pipelines, observability from day one. We treat cloud accounts, on-premise clusters and hybrid environments as production from the moment they are first provisioned.
We integrate security throughout the software lifecycle — threat modelling early, identity and secrets managed centrally, dependencies reviewed, and controls verified continuously. Security is not a phase we add at the end; it is a property of the systems we build.

A written statement of the outcome, its constraints, and its stakeholders. No engagement starts without one.
Architecture, interface and data-model sketches. Reviewed openly, revised often, kept in version control.
Iterative delivery in short cycles. Every increment is documented, tested and shippable.
Handover, runbooks, monitoring, and long-term maintenance under a defined service arrangement.

Languages
Runtimes & frameworks
Cloud platforms
Practices
The specifics of every sector are different, but the underlying discipline is the same: understand the constraints, design accordingly, deliver conservatively.
Sector
Financial services
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Industrial & manufacturing
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Logistics & mobility
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Health & life sciences
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Public sector
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Professional services
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Energy & utilities
Sector
Retail & commerce
Engagements are staffed by senior engineers who remain on the work from brief to operation. No handoff to a delivery pool.
Decisions, trade-offs and architectures are written down. If it is not in the repository, it did not happen.
We stay with systems we build. Maintenance is not an afterthought — it is planned and priced from the beginning.
We are not resellers. Technology choices are made against the requirements of the engagement, not commercial incentives.
Estimates are ranges with assumptions. When something moves, we say so.
We decline work that we cannot deliver responsibly. This is a feature, not a limitation.
Every deliverable is reviewed by a second engineer. Tests accompany features, not the other way around. Observability is treated as production functionality. Incidents are followed by written post-mortems whose recommendations are tracked to completion. These are not initiatives — they are how we work.
