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Braska
Braska

Projects since 2014

Platforms, migrations and operations for enterprises and mid-sized companies. Contacts for reference calls on request.

  1. Wilde-IT

    Wilde-IT

    Role
    Staff Software Developer
    Period
    10/2024 – today
    Industry
    Financial
    Technologies
    Golang, Kubernetes

    Design and Development of a Multi-Stage, Workflow based Data Processing Pipeline

    Details
    • Built a Kubernetes-native file integration platform in Go, distributed across core services and remote agents, processing around 10,000 jobs per minute
    • Workflow engine based on a state machine with retry, cancellation and flow control between core and agents
    • Pluggable protocol adapters for SFTP, SMTP and local filesystems — new sources or targets plug in without touching the core
    • gRPC middleware chain for filtering, selective compression, PDF conversion, tokenization and templating
    • PostgreSQL-backed job queue with stream-based S3 file transfer for reliable delivery under failure
    • Kubernetes CRDs and controllers for workflow management, RBAC with multi-tenancy and enterprise auth via LDAP, OIDC and SAML
  2. Teleson AG

    Teleson AG

    Role
    Dev-Ops and Platform-Engineer
    Period
    05/2024 – 10/2024
    Industry
    Marketing
    Technologies
    AWS, Golang, Saltstack

    AWS Cloud Migration and implementation of AWS best practice patterns

    Details
    • Built a Go-based automation infrastructure for on-premise and AWS environments to address frequent incident downtime, reducing recovery time and providing full visibility into all deployed services
    • Migrated manually provisioned servers and infrastructure to Industry best practices (Infrastructure as Code via CDK), increasing deployment reliability and boosting team confidence in production changes
    • Introduced CI/CD pipelines on GitHub Actions to eliminate manual deployment steps, reducing the number of required admin interactions per deployment to near zero
    • Led the adoption of containerized architecture on EKS to replace slow EC2 instance rebuilds, cutting deployment time from over 30 minutes to under 2 minutes
  3. Juratherm GmbH

    Juratherm GmbH

    Role
    System Architect and Dev-Ops
    Period
    05/2018 – today
    Industry
    Industrials
    Technologies
    Kubernetes, AWS, Ansible, CUPS, Slack, CSI

    IoT Devices, AWS Account Management and Manufacturing Automation

    Details
    • Designed and executed a zero-downtime migration of the company's critical on-premise infrastructure to AWS using CDK and CloudFormation, establishing a fully codified and reproducible cloud environment
    • Developed a distributed, GRPC-based print spooler and server in Go to automate manufacturing label printing, replacing a fragile manual process
    • Implemented microservice authentication using Smartcards and Yubikeys with OAuth/OpenID Connect in Go, securing access across distributed services
  4. EnBW AG

    EnBW AG

    Role
    Software Developer and Dev-Ops
    Period
    multiple, latest 10/2022 – 06/2024
    Industry
    Utilities
    Technologies
    Golang, Kubernetes, Harbor, AWS, Gitlab, Vmware vRa/vRo

    Kubernetes On-Premise Infrastructure and OS patch automation tooling

    Details
    • Designed and developed a distributed, GRPC-based patch management system in Go to automatically update all Linux servers across the company's backend networks, replacing a previously manual and error-prone process
    • Built a headless Saltstack-based command execution engine in Go, enabling secure and auditable remote command execution across hundreds of servers
    • Reduced bare-metal Kubernetes cluster provisioning time from 30 minutes (kubespray) to under 2 minutes by developing custom Go tooling deployed within an existing management cluster
    • Configured Palo Alto Prisma runtime security for intrusion and attack vector detection within Kubernetes workloads, strengthening the company's security posture for containerized environments
  5. Scout24 AG

    Scout24 AG

    Role
    Software Developer and Dev-Ops
    Period
    06/2019 - 11/2019, 07/2021 – 08/2022
    Industry
    Online
    Technologies
    Kubernetes, Golang, AWS, CDK

    Company-wide hosting platform for microservices and AWS account migration

    Details
    • Built Kubernetes custom resources and controllers in Go to provide a standardized interface for metrics, alerts, and autoscaling for internal developers, reducing average deployment time from 15 to 3 minutes and unrecoverable deployment failures from 1% to below 0.1%
    • Implemented automated backup and restore pipelines for 5 Kubernetes clusters using Velero with a custom UI, enabling cross-cluster service migration in under 1 minute — well within the 1-hour RTO requirement
    • Executed a zero-downtime organizational carve-out, migrating 150 of 600 services — including relational databases, AWS account resources, and Kubernetes workloads — into new organizational structures without service interruption
  6. Klingel K - Mail Order GmbH & Co. KG

    Klingel K - Mail Order GmbH & Co. KG

    Role
    Dev-Ops
    Period
    08/2023 – 02/2024
    Industry
    Online Retailer
    Technologies
    Ansible, Kubernetes, Ubuntu, K3s, PostgreSQL

    Interim System Management and establishing a new Observability pipeline in an on-premise Environment.

    Details
    • Took over interim system administration of the returns department's application stack using Ansible, Ubuntu, and Kubernetes, ensuring operational continuity during a staffing gap
    • Migrated Nexus, EFK/ELK, and monitoring solutions between in-house data centers with minimal disruption, establishing a modernized observability pipeline
    • Implemented automated backup strategies for in-house hosted PostgreSQL databases, closing a critical gap in data protection
  7. ADB Safegate

    ADB Safegate

    Role
    Site Reliability Engineer
    Period
    08/2022 – 01/2023
    Industry
    Manufacturing
    Technologies
    Kubernetes, Golang, Rancher, On-Premise

    Kubernetes-based Application Edge deployments and infrastructure

    Details
    • Designed and led development of a standardized Helmfile-based deployment pipeline, enabling reproducible and offline-capable Kubernetes cluster provisioning across heterogeneous edge environments
    • Trained and mentored the in-house development team on Kubernetes operations and fault-tolerant architecture patterns, accelerating the team's ability to independently manage production workloads
  8. IONOS SE

    IONOS SE

    Role
    Dev-Ops / Platform Engineer
    Period
    12/2021 – 03/2022
    Industry
    Online
    Technologies
    Kubernetes, Golang

    In-Hose on-premise Kubernetes Cloud Offering and automation tooling

    Details
    • Contributed to building and maintaining a Kubernetes PaaS serving over 10,000 customers, developing and validating all Go-based tooling through automated CI pipelines
  9. AMAN Media GmbH

    AMAN Media GmbH

    Role
    AWS Architect / SRE
    Period
    08/2020 – 09/2021
    Industry
    Online
    Technologies
    AWS, Python, Lambda

    Cloud Architecture and implementation of scalable webshops

    Details
    • Architected a scalable AWS hosting solution for a PHP web application with asynchronous background task processing, enabling the platform to handle growing traffic without manual intervention
    • Introduced Infrastructure as Code and automated Jenkins deployment pipelines, enabling developer self-service deployments and eliminating manual provisioning steps
    • Established Opsgenie-based on-call alerting integrated with the production environment, reducing incident response time through structured alert routing and triage
  10. Baxter International

    Baxter International

    Role
    Dev-Ops / SRE
    Period
    07/2020 – today
    Industry
    Healthcare
    Technologies
    Azure, Kubernetes, Golang, React.JS, GitHub Enterprise, GHEC

    Role Based Access Control Policies and Kubernetes Infrastructure

    Details
    • Established reliable operations for 3 AKS Kubernetes clusters supporting 400 developers transitioning from on-premise deployments, creating standardized workflows and runbooks for the new platform
    • Containerized 25 Java-based applications and automated GitHub workflows with Helm-based lifecycle management, reducing lead and deploy time for software changes from multiple hours to under 5 minutes
    • Migrated the company's source code management system (230 repositories, 400 users) from Bitbucket to GitHub Enterprise, implementing SAML, 2-factor authentication, and SCIM-based user provisioning to strengthen security
    • Built self-service tools in Go and TypeScript enabling engineering managers to manage team membership and role-based access control within Azure AD, eliminating manual IT tickets for access changes
  11. AutoScout24 GmbH

    AutoScout24 GmbH

    Role
    Software Developer
    Period
    11/2019 – 04/2020
    Industry
    Online
    Technologies
    React.JS, AWS, Golang

    Offer management for car dealerships

    Details
    • Developed a React.JS/TypeScript frontend for an online car selling platform, enabling car dealers to manage their active listings and monitor performance metrics in real time
  12. 100 days Software Projects GmbH

    100 days Software Projects GmbH

    Role
    Software Developer and SRE
    Period
    01/2018 – 06/2019
    Industry
    Online
    Technologies
    React, Kubernetes, Golang, Codeship, Google Cloud Platform, Kafka, Node.JS, Jira, Linux, Nginx, MySQL, PostgreSQL

    On-Premise Kubernetes Setup, Cloud Collaboration Suite and Online Password Manager

    Details
    • Developed an office-suite-like collaboration frontend (Excel, Word) for small-to-medium-sized businesses using React.JS and TypeScript, providing a browser-based alternative to desktop productivity tools
    • Built a Google-Drive-like cloud storage service with a React.JS frontend and Go backend, supporting real-time file management and sharing
    • Designed and implemented a thumbnail generator in Go with S3-based storage, leveraging asynchronous fan-out worker pipelines for high-throughput image processing
    • Architected and developed a web-based password manager using React.JS, Go, and WebAssembly, enabling client-side encryption for secure credential storage
    • Built on-premise Kubernetes hosting and CI infrastructure with Ansible-based automation, providing the team with a self-managed deployment platform
  13. seven point.media GmbH & Co. KG

    seven point.media GmbH & Co. KG

    Role
    Software Developer and SRE
    Period
    03/2016 – 12/2019
    Industry
    Health
    Technologies
    React, PHP, Kubernetes, AWS, GitHub

    Membership and Device Management for EMS-based training

    Details
    • Co-developed fitness center management software used by 600 clients across 10 countries, building the PHP backend and React.JS frontend for membership and device management
    • Built and maintained an AWS/EKS platform product enabling developers to build and deploy PHP applications in under 5 minutes through self-service pipelines
  14. ERAMON GmbH

    ERAMON GmbH

    Role
    Consultant and React Coach
    Period
    03/2016 – 06/2016
    Industry
    Industry Supply
    Technologies
    React, Webpack, Node.JS, Sass

    Details
    • Coached internal developers on React.JS adoption and modern frontend best practices, enabling the team to independently build and maintain React components
    • Integrated React components into the company's legacy software platform, modernizing the user experience without requiring a full rewrite
  15. VATC Technologies Inc.

    VATC Technologies Inc.

    Role
    Software Architect and Developer
    Period
    03/2015 – 06/2016
    Industry
    Defense
    Technologies
    React, Node.JS, Apache, Ruby on Rails, PHP, Docker, Linux, AWS, Elasticsearch, Cassandra, ArcGIS

    Modern-Age Exercise Planning and Monitoring

    Details
    • Designed and built a platform for secure storage and analysis of biometric data (fingerprints, iris, PII) using Ruby on Rails and React.JS on AWS, meeting strict security requirements for sensitive data handling
    • Architected a social network intelligence aggregation platform using web scrapers, Twitter Firehose, and Kafka pipelines feeding into Cassandra, enabling exercise operators to inject training scenarios and analysts to practice identification workflows
  16. Corscience GmbH & Co. KG

    Corscience GmbH & Co. KG

    Role
    SRE
    Period
    01/2015 – 12/2016
    Industry
    Healthcare
    Technologies
    Debian Linux, Ansible, Docker, VMware, Ruby on Rails, React

    Details
    • Administered and automated the company's Debian-based server landscape using Puppet and Ansible, reducing manual maintenance effort and improving consistency across environments
    • Developed in-house software applications using Ruby on Rails and Docker, delivering internal tools to streamline business operations
    • Consolidated 20 web services into a Docker-based hosting platform, reducing total infrastructure overhead and simplifying deployment workflows
  17. XPANDMMI

    XPANDMMI

    Role
    Software Developer
    Period
    01/2015 – 03/2015
    Industry
    Online
    Technologies
    PHP, Apache, MySQL, Ruby on Rails

    Details
    • Developed various platform modules for a CMS system in PHP and Ruby on Rails, extending the platform's functionality for client-specific requirements
  18. Jacor Online Marketing

    Jacor Online Marketing

    Role
    Software Developer
    Period
    06/2014 – 12/2014
    Industry
    Online
    Technologies
    PHP, React

    Details
    • Designed and developed an image evaluation and rating application in PHP and React, enabling users to upload, review, and score visual content

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