The person who builds your platform should be the one who runs it.
D2 Solutions is a platform engineering, SRE, and AI infrastructure practice founded by Dejan Dukic in Resetari, Croatia. One operator, real production systems, and work that has to keep running after everyone else goes home.
A decade of production operations, from a Croatian ISP to multi-cluster Kubernetes. Resetari, Croatia; remote worldwide, still on call.
LinkedInWhere this started
The work started in a telecom data center. Dejan spent eight years at Iskon Internet, one of Croatia's largest ISPs, where uptime was never a slide, it was a pager. Enterprise DevOps at BISS followed, then multi-tenant Kubernetes at Scoop Technologies. D2 Solutions grew out of that decade spent on the operations side of the fence.
The same gap kept showing up along the way. Engineering teams understood their code, and SREs understood their clusters, but nobody owned the line between them. So the practice was built around that line: scoped quarterly engagements for platform engineering, SRE, and AI infrastructure work.
The way we work is simple to say and harder to hold to. Honesty over slideware. Operate real systems rather than advise from the outside. Keep a human on every gate that can hurt you. We are also the delivery partner for ID Shield Protect, running the LureLab phishing simulation and Nexably compliance platforms on EU infrastructure we operate ourselves.
D2 Solutions is incorporated in Croatia as D2 Solutions d.o.o., registered with the Commercial Court of Osijek. Full statutory details on the Impressum page.
Systems that stayed up.
At Scoop Technologies, a multi-tenant Kubernetes platform on VMware Tanzu with an Istio ambient mesh. Hard tenant isolation that has held across seven clusters and ten-plus tenants, with zero cross-tenant data leaks.
For the Electricity Authority, the Crown entity governing New Zealand's electricity market, four public portal apps consolidated across Azure tenants. Managed identity everywhere, and a two-wave production cutover with pre-agreed rollback thresholds.
For SuiteFiles, a multi-region Azure platform across three regions serving more than ten thousand customers. Private telemetry, cost governance, and backend CI cut from 22 minutes to 12.
The stack we run.
Platform & Orchestration
CI/CD & IaC
Cloud Platforms
Observability & SRE
AI Infrastructure
Security
A check that cannot fail is not a check, and a machine's confidence is not evidence.
That rule governs how we build. Every automated check points at real data, AI output is a strong first pass and not a verdict, and a human stays on every gate that can hurt you. It is why the systems we deliver stay legible in production.
Bring the system, the constraints, and the deadline. We will tell you honestly what it takes, and stay on the gates that matter.