tl;dr: I'm a DevOps and platform engineer with over 8 years of hands-on experience. Operated production Kubernetes clusters (EKS, AKS) and managed cloud infrastructure across AWS, Azure, and GCP using Terraform and Helm. Three-year track record running a business-critical integration system on K8s with sub-minute sync cycles, handling cluster upgrades, state management, and incident response. Reduced CI build times by 96% through Docker layer caching and multi-stage builds. Configured monitoring (Datadog, Sentry), enforced RBAC and namespace isolation, and deployed through ArgoCD-driven GitOps pipelines. Also delivered the applications running on these platforms: Python/Django backends, Flutter mobile, and Azure-hosted microservices.
01Experience
MaxmoveCertificateCologne, in partnership with
BMWE, 
EXIST, 
PTJ, Full-time- Co-founded an on-demand logistics platform with Max and Christian, running on AWS EKS; provision the cluster, RDS, ECR, and networking with Terraform as Infrastructure-as-Code and ship through ArgoCD GitOps, Helm, and GitHub Actions CI/CD
- Building the backend as event-driven Go and TypeScript microservices over ConnectRPC/gRPC with Protobuf and a NATS message bus, behind a type-safe Bun + Elysia API (Better Auth multi-tenant orgs, Kysely, PostgreSQL, Redis)
- Delivering React Native (Expo) customer and driver apps plus Next.js web and ops dashboards, with live GPS tracking, dispatch, pricing, promotions, referrals, and in-app chat
- Integrating Shopify and WooCommerce for checkout-to-delivery booking and Stripe Connect for payments and driver payouts; building internal CRM and admin tools for real-time order tracking and support
- Setting up and running Datadog, Sentry, and PostHog observability across infrastructure, errors, and field usage on a multi-tenant, cloud-native platform that moves an order from checkout to delivered
- Operated production Kubernetes clusters (EKS, AKS) over three years; performed minor-version upgrades including API deprecation audits, control plane rollouts, and rolling node group replacements
- Provisioned and maintained cloud infrastructure with Terraform (EKS clusters, node groups, IAM roles, networking, S3, RDS) using S3+DynamoDB state backend
- Reduced CI Docker build times by 96% (8 min → 20 sec) through layer caching strategy and multi-stage builds; approach adopted across all company projects
- Configured Datadog APM across Django services with 5xx and Celery queue depth alerting; integrated Sentry for exception tracking; enforced namespace isolation with RBAC and ArgoCD GitOps-only production deployments
- Ran a bidirectional ERP sync system (12K customers, 25K products, sub-minute cycles) on Kubernetes for three years; delivered application backends (Django/DRF, Celery, PostgreSQL), a production Flutter mobile app, and a Power Automate solution with Flask microservice on Azure AKS
- Managed Kubernetes clusters (AKS, EKS) and CI/CD pipelines with GitHub Actions and GitLab CI/CD
- Implemented infrastructure-as-code with Terraform and Helm; configured Datadog monitoring and security policies (RBAC, OAuth2, JWT)
- Managed cloud deployments on AWS using Terraform for infrastructure provisioning, ArgoCD for GitOps-driven continuous delivery, and Helm for Kubernetes package management
- Developed backend services in Kotlin integrating SAP One Business Suite and Amagno document management
- Built full-stack web applications with TypeScript frontends and REST API backends; integrated OAuth2/JWT-based authentication
02Selected Projects
CI/CD Pipeline Optimization
Docker, Shell, Multi-stage Builds, Layer Caching
Took over a CI pipeline with 8-minute build times. Rewrote shell scripts, restructured Dockerfiles for optimal layer caching, and introduced multi-stage builds. Result: 20-second builds. The approach has since been applied across multiple company projects.
Production Kubernetes Platform
EKS, AKS, Terraform, Helm, ArgoCD, Datadog
Three years operating a multi-service Kubernetes platform across EKS and AKS. Infrastructure provisioned via Terraform with S3+DynamoDB state locking. Deployments managed through ArgoCD with Helm charts. Performed cluster version upgrades with API deprecation audits and rolling node replacements. Namespace isolation and RBAC policies enforced per project, with CI service accounts scoped to their target namespaces only.
Selectline ↔ Shopware ERP Integration (Ops)
Kubernetes, Docker, Celery, Datadog, Sentry
Operated a bidirectional sync between a German ERP system and Shopware 6 webshop on Kubernetes: 25K products, sub-minute sync cycles, >50 orders/day. Datadog APM for request latency and error rate monitoring; Sentry for exception tracking. Celery queue depth alerting to detect upstream API degradation before it impacts sync reliability.
SVG Threat Detector
Python, XML/AST analysis, Open Source
Detects script injection, XSS payloads, and malicious elements in SVG uploads via XML tree parsing and AST-level analysis of embedded scripts, onload handlers, and href injection vectors.
03Education
Thesis: Prediction of Human Mobility Patterns in Multiple Cities.
04Timeline
Got into programming from a math background. Python, algorithms, first exposure to system design, hackathons.
Started freelancing. Built Telegram bots for mid-sized firms automating internal workflows — webhooks, process supervision, zero-downtime redeploys on rented VPSes.
Competed in Kaggle and Codeforces rounds, reaching yellow (Candidate Master), alongside continued freelance work. Enrolled BSc Computer Science at TU Dortmund in October.
DevOps Engineer at Adesso Insurance Solutions, August through December. Moved from mixed full-stack work into a role focused entirely on platform operations.
Joined a software agency as Full Stack Developer and Product Owner. Took over the Selectline × Shopware ERP integration end-to-end: architecture, monitoring, customer support, and same-day hotfix cycles against an unreliable upstream. Shipped a Shopware PHP plugin for Gewerbeschein validation alongside the sync work; client saved 50k+ EUR in manual reconciliation.
At the agency, shipped a Django AI interview platform, a Flutter factory app for daily on-site use, and an Azure Flask microservice for Power Automate order management. Open-sourced the SVG Threat Detector for XML/AST-level scanning of upload vectors MIME checks miss.