Novi Sad, Serbia
Dušan
Šušić
I build platforms and stay to run them.
Platform Engineer · SRE · DevOps
builder · debugger · maintainer · consultant · advisor
What I do
Cloud infrastructure, CI/CD, observability, and the security work that comes with all three. I build the thing, carry the pager for it, and keep it boring enough that nobody has to think about it.
Thirteen years in, across platform engineering, SRE and DevOps, I still think the unglamorous parts of reliability are the interesting ones. Instrument a system so it explains itself, automate whatever nobody should have to do twice, and most incidents stop being mysteries. These days I do that with teams I have built and led.
Most recently it meant replacing a commercial APM and a CloudWatch log bill with a self-hosted OpenTelemetry and Grafana stack. Then I wrote down what it actually cost.
I consult and advise as well, usually on observability and on the platform decisions that are expensive to reverse.
Where I've worked
Full history →- UniverexportMay 2013 to Aug 2014
- Levi9Aug 2014 to Oct 2017
- codecentricOct 2017 to Mar 2018
- InstanaMar 2018 to Sept 2020
- Hero HealthSept 2019 to present
- goUrbanMar 2021 to Jan 2022
Writing
All posts →The Observability Migration is a ten-part account of moving logs, metrics and traces onto a stack we run ourselves.
- Lessons LearnedTen sessions in: what I would do the same, what I would do differently, and whether it was worth it.
- The Cost BreakdownWhat the self-hosted stack costs per month, line by line, against the bill it replaced.
- Migrating MonitorsPorting hundreds of alerts into a new query language, and the remote-write we forgot to move.
- GitOps Deployment ModelTerraform modules, configuration in Git and automated sync, so the observability stack can be rebuilt from scratch.
- OTel InstrumentationWiring the OpenTelemetry SDK into real services: resource attributes, batch processors, and the settings that actually matter.