Senior Platform Engineer

Deogratias
Uwizeyimana

Running the Kubernetes platform behind 40+ banks.

I design and operate multi-tenant platforms for regulated workloads, from GitOps and policy to observability and incident response, so they stay secure, observable and boringly reliable.

View work ↓ Get in touch →
Portrait of Deogratias Uwizeyimana 
$ kubectl describe engineer deo
Role:      Senior Platform Engineer
Location:  Kraków, PL · remote EU
Status:     Open to new roles
Certs:     6/6 Ready
Uptime:    5y+ in cloud
40+
banks on the platform
I help operate
10+
production environments
migrated to AKS
50+
repos & pipelines moved
to GitHub Actions
24/7
on-call incident
response

Selected Work

Data services · 2026

Multi-tenant Redis & PostgreSQL, re-architected

Tenants were locked into Azure Cache for Redis and shared one PostgreSQL server, so applications could not be isolated from each other.

Cache Azure Cache for Redis Managed Redis · region A region B
Database Shared PostgreSQL server One server per application
  • Designed a multi-tenant Azure Managed Redis platform with active-active geo-replication, giving clients a migration path off Azure Cache for Redis.
  • Re-architected PostgreSQL provisioning into one server per application, migrating all existing state in place.
Platform operations · 2026

A fleet kept current, and leaner after hours

AKS, Istio, ArgoCD and Kyverno release fast, banks expect zero surprises, and workloads ran at full scale around the clock.

Capacity
Off-hours ArgoCD SyncWindows Kyverno DeletingPolicy automatic scale-down
  • Own lifecycle upgrades of AKS, Istio, ArgoCD and Kyverno across the platform.
  • Automated off-hours scale-down with ArgoCD SyncWindows and Kyverno DeletingPolicy, improving resource use and consolidating tooling.
  • Share 24/7 on-call for production incidents, and write the SOPs that help support teams and developers adopt new features.
Observability · 2023 – 2025

Datadog → Grafana

High metric cardinality slowed dashboards down, and incident alerts had no common standard across teams and customers.

Telemetry Datadog PrometheusLoki Grafana
Alerting One framework PagerDutySlackTeamsEmail
  • Helped move the platform from Datadog to Grafana, lowering cost and adding flexibility.
  • Cut metric cardinality with adaptive metrics and datasource caching, speeding up dashboard queries.
  • Built one configurable alerting framework routing to PagerDuty, Slack, Teams and email.
Cloud migration · 2023 – 2025

AWS → Azure: one platform on AKS

Production environments for regulated banking clients were spread across AWS EKS and private Azure tenants.

Runtime AWS EKSPrivate Azure Managed hosting · AKS
GitOps FluxCD ArgoCD + Helm
CI/CD Azure DevOps GitHub Actions
  • Migrated 10+ production environments to managed hosting on AKS.
  • Standardised GitOps on ArgoCD + Helm, replacing FluxCD.
  • Moved 50+ repositories and their pipelines from Azure DevOps to GitHub Actions.

Certifications

CKS
Certified Kubernetes Security Specialist
CNCF · verify ↗
CKA
Certified Kubernetes Administrator
CNCF · verify ↗
AWS
DevOps Engineer – Professional
Amazon Web Services · verify ↗
AWS
SysOps Administrator – Associate
Amazon Web Services · verify ↗
AZ
Azure Administrator Associate
Microsoft · verify ↗
TF
Terraform Associate
HashiCorp · verify ↗

Stack

Cloud
AzureAWS
Containers
KubernetesDockerHelmIstioKyverno
IaC & CI/CD
TerraformArgoCDGitHub ActionsFluxCD
Observability
GrafanaPrometheusLokiDatadogPagerDuty
Scripting
BashPython
AI tooling
Claude CodeOpenCodeMCP servers

About

I design and run Kubernetes platforms for production-critical, regulated environments, with multi-tenant managed hosting on AKS as my current focus. My principle is reliability by design, not by rescue: security, operability and resilience are built in from the start, not bolted on after the first incident.

I moved into cloud in 2021 from an engineering background, with a dual Master's from AGH Kraków and IST Lisboa. I mentor junior engineers, run internal knowledge-sharing sessions, and work fluently in English and French.

  1. Senior System EngineerHEAD
    Backbase · Platform Engineering · 2026 – now
  2. System Engineer
    Migration & Observability · 2023 – 2025
  3. Junior System Engineer
    EKS & AKS onboarding · 2021 – 2022
  4. Associate Cloud Engineerandela
    Andela · GCP, remote · 2021
  5. IT Analyst
    HCL Technologies · Kraków · 2020 – 2021
  6. Dual Master's degreeinit
    AGH Kraków / IST Lisboa · Chemical Technology & Energy Engineering · 2019 – 2021

Let's work
together.

Open to senior platform and infrastructure roles, remote across Poland and the EU.

[email protected] LinkedIn ↗