Architecting
Digital Ecosystems

I help teams at dotbydot and i3 Solutions Inc. design and ship resilient digital systems without unnecessary complexity.

Flagship initiatives

Where the work happens.

Two companies and the two products built between them: from architecture and code to the infrastructure they run on.

Philosophy

Precision Engineering.
Strategic Innovation.

"Innovation without foundation is chaos. Experience without curiosity is stagnation. The magic happens when deep study meets battle-tested intuition."

Digital systems architecture demands a solid computer science foundation paired with relentless curiosity and complete problem understanding. Innovation emerges from studying deeply, not guessing quickly. Experience-based intuition acts as a compass, helping navigate complexity and avoid costly rabbit holes. The result? Secure, scalable systems delivered faster, built on fundamentals that actually work.

Years experience
20+
Users served
2M+

Experience

Experience Snapshot.

A compact view of the work I do most: architecture, delivery, and product/platform execution.

Architecture

System Design

End-to-end architecture for distributed platforms, from service boundaries and APIs to reliability, observability, and security.

Delivery

From Plan to Production

Technical leadership through discovery, planning, execution, and rollout, with focus on predictable delivery and clean handover.

Infrastructure

Hosting & Operations

Running what gets built: hosting, networks and operations that stay secure and affordable.

Track Record

20+ Years | 2M+ Users

Long-term work across healthcare and enterprise environments, building systems that stay operable as teams and traffic grow.

Tech Stack

Can Use Anything.
Won't Love Everything.

Two decades navigating the technology landscape taught me this: every tool has its place, but some places are better than others. Here's where things land when plotted on axes that actually matter.

How Good I Believe It Is →
How Much I Enjoy Using It →
Go: Simple, fast, elegant
Git: Version control done right
Docker: Changed everything
Linux: The only real OS
Python: Prototype to production
Bash: Underrated power tool
C#: Enterprise excellence
nginx: Rock solid reliability
Redis: Caching perfected
OTel
OpenTelemetry: Observability done right
AI
AI: Revolutionary, use wisely
Ansible: Does the job, reluctantly
SQL: Necessary, all flavors
PostgreSQL: Gold standard
Kubernetes: Necessary complexity
Kafka: Powerful but painful
Prometheus: Metrics, reluctantly
AWS: Vendor lock-in paradise
Azure: Enterprise overhead
GCP: Google's experiment
DDD
Domain-Driven Design: Used when necessary
JavaScript: Love-hate relationship
GitHub Actions: Convenient mediocrity
Windows: When clients insist
µSvc
Microservices: Distributed monolith
Jenkins: Gladly avoiding
REST
REST: Dated but ubiquitous
Daily drivers
Go-to choices
Core tools
When necessary

Let's Connect.

Need a senior technical partner for architecture, platform strategy, or delivery leadership? Let's talk.

Kostas Tsopanakis

kostas@tsopanakis.com

Office

Athens, Greece

In business since

28/12/2009