Senior Cloud Native Engineer

Contributor to the Open Component Model (OCM), a NeoNephos open-source Go project for packaging, signing, transporting and deploying software artefacts with end-to-end security and provenance. - Developed and bugfixed Go libraries and CLI features for OCI registry interactions, HTTP client configuration, artifact downloads, and component transformation workflows. - Packaged the Kubernetes controller as a Helm chart with E2E tests and maintained CI/CD pipelines (GitHub Actions, Renovate, reusable workflows). - Authored ADRs, credential system documentation, and component authoring guides for the OCM website. Tech Stack: Go, OCI, Kubernetes, Helm, Kustomize, GitHub Actions, OpenSource

Project: Multi-regional Developer's Platform tailored for electric vehicle (EV) projects. Location: Hague, Netherlands. - Engineered Crossplane resources for Kafka and Kubernetes IAM role bindings. - Built a GoLang application demonstrating Kafka and Crossplane resources usage. - Maintained and bugfixed GoLang applications responsible for connecting EV chargers with backend systems. - Instrumented GoLang applications using OpenTelemetry to provide metrics, traces and contextualised logs. - Standardised Helm charts for consistent deployments. - Developed cost allocation dashboards. - Configured multiple ArgoCD deployments. - Performed zero downtime migration of topics between two Kafka clusters. - Transitioned applications to a new domain while maintaining accessibility via the old one. - Performed Route53 zone transfers with DNSSEC enabled. - Replaced GitLab CI pipelines with GitHub Actions. - Authored several Architectural Decision Records (ADRs). - Performed On-call responsibilities. Tech Stack: GoLang, AWS, AWS Route53, AWS Load Balancers, AWS MSK(Kafka), Kafka MirrorMaker, AWS EKS(Kubernetes), ArgoCD, Helm, GitHub Actions, Prometheus, Grafana, Loki, Dynatrace, OpenTelemetry

Project: Enhance CI/CD processes and migrate workloads to Google Kubernetes Engine (GKE) for a global wholesale platform. Location: Berlin, Germany. - Advised on CI/CD best practices and implemented GitOps workflows using ArgoCD, Helm, and Kustomize. - Configured GCP/GKE application environments utilising Shared VPC. - Built secure and automated secret management. - Automated Jenkins for repository discovery. - Migrated repositories from GitLab to GitHub. - Managed the transition of workloads to GKE. - Configured DataDog logs collection and alerts. Tech Stack: GCP, GCP Secret Manager, GCP GKE(Kubernetes), GCP Shared VPC, ArgoCD, GitHub, Jenkins, DataDog, Helm, Kustomize, External-Secrets, Networking

Project: Build an e-commerce platform for a warehouse startup. Location: Oslo, Norway. - Provided technical advice on cloud-native development practices. - Mentored the team, enhancing their skills and promoting effective collaboration. - Developed effective strategies and integrated best practices to ensure high-quality work outputs. - Developed several NodeJS microservices utilising NATS. - Implemented Stripe for payment processing with subscription management. - Introduced ArgoCD to streamline continuous delivery processes. Tech Stack: Google Cloud Platform, Kubernetes, GitOps, ArgoCD, GitLab, NATS, Stripe, NodeJS

Project: Migrate a major e-commerce platform to the cloud. Location: Paris, France. - Supported the migration of SAP Hybris to the AWS cloud. - Developed a proof of concept (PoC) for a microservice architecture alongside the existing monolith. - Engineered GraphQL APIs using Spring Boot to enhance data retrieval processes. - Configured and deployed Akamai CDN to improve global content delivery speeds. Tech Stack: AWS EKS (Kubernetes), AWS ElastiCache (Redis), AWS CloudFormation, Javam Spring Cloud Gateway, GraphQL, Bamboo, Akamai CDN, SAP Hybris

Project: Build and maintain a cloud platform to support a large-scale cloud migration. Location: Amsterdam, Netherlands. - Implemented cost optimization strategies, including auto-scaling Kubernetes clusters and employing Hashicorp's Reaper function to remove unused resources. - Developed Grafana dashboards to monitor resource utilization. - Automated Jenkins configuration using Configuration-as-Code and Job DSL. - Set up and maintained monitoring systems based on Grafana and Prometheus. - Configured cloud infrastructure components using an infrastructure-as-code approach. Tech Stack: AWS, AWS EC2, AWS EKS(Kubernetes), Terraform, Grafana, Prometheus, Jenkins

Location: Warsaw, Poland. Project: In-app fuel payments. - Served as the team leader. - Ensured reliable connectivity to fuel stations. - Set up and developed cloud infrastructure environment. - Developed applications using Node.JS and Java to process transactions. Project: A hub-like integration platform collecting and serving station-related data. - Developed backend and frontend applications in a microservice approach. - Performed DevOps tasks to support service deployment and operations. Project: Provide real-time car wash vacancy data. - Developed backend in Node.js collecting real-time data from stations. - Handled basic DevOps tasks to ensure smooth deployment and operation. Tech Stack: AWS (IAM, RDS, Redis, Elastic Beanstalk, EC2), Terraform, Docker, HAProxy, ELK, Node.js, TypeScript, Java, Spring Boot, RxJava, Gradle, Nginx, Jenkins (Pipelines, Job Builder), Elasticsearch, Jennkins (Pipelines, Job Builder)

Project: Support and maintain the internal platform for issuing insurance policies. Location: Warsaw, Poland. - Performed routine maintenance and troubleshooting. - Developed and implemented software enhancements to improve platform functionality and user experience. - Maintained direct communication with clients (internal stakeholders) to address their needs promptly and ensure their requirements were met effectively. Tech Stack: Java, JSF/JSP, XML, XSLT, JavaScript, SQL/Oracle