Amazon RDS Experts in Berlin

• Bootstrapping a CloudOps team and building a multi-cloud provider backend for a low-code Internal Developer Platform (IDP) with env zero

• Introducing user story mapping, ADRs, milestones, and backlog management

• Designing and developing core APIs, setting up CI/CD pipelines, OpenTofu/Terraform scripts

• Representing and communicating the team with third-party stakeholders (e.g. env zero)

• (Cross-)team coaching on DevOps, software design, Terraform, Golang, and agile practices

• Creation, maintenance and hardening of Kubernetes clusters employing Ansible and ArgoCD
• Keywords: Ansible, AWX, Kubernetes, NetApp, Prometheus, CI/CD ArgoCD, SSO, Fluent-bit, HAProxy, Calico, Keycloak, oauth2-proxy, SealedSecrets, kubeseal, Aqua kube-bench, CIS-Benchmarks, Aqua Trivy operator

• Development of control units for the automotive industry incl. embedded software
• CAN bus, Vector Tools, CANoe
• Support of the development process according to ISO 26262
• Ensuring cyber security standards:
• Key exchange (PKI) between vehicle and control units
• Hardware Security Module (HSM)
• Communication with external service providers (international)
• Development (PCB) of measuring adapters, statistical analysis of sensors
• IoT and embedded software development, backend administration

• Architected and operated cloud-based data and ML platforms for autonomous driving and parking systems, supporting large-scale (multi PB scale) simulation and vehicle data ingestion.
• Implemented security, compliance, and governance standards across Azure subscriptions and cloud resources.
• Managed GitHub organizations and CI/CD pipelines to improve deployment reliability and developer productivity.
• Contributed to hiring and technical interviews as part of the recruitment panel.

• Developed high-performance APIs for SDK backend on JavaEE Web, iOS, and Android, improving application performance and scalability by 30%.
• Led system design, tech stack planning, and development, ensuring 98% uptime with strong code quality and automated tests.
• Implemented CI/CD pipelines with Jenkins and GitHub Actions, reducing release cycle time by 40%.
• Deployed cloud-native applications on AWS EC2 instances, ensuring 99% uptime and optimized performance.
• Delivered clean code with full unit, component, and integration test coverage, reducing defects by 25%.
• Collaborated across engineering, QA, and product teams to deliver secure, reliable solutions.
• Mentored team members, increased development efficiency by 20%, automated routine tasks, and contributed to hiring, growing team capacity by 15%.

• Consulting an NGO in the field of data center sustainability in publicly funded projects (BMUKN with NADIKI and Federal Environment Agency with SIEC)
• Development of Python APIs and web applications, deployment on AWS/ECS with Terraform
• Collecting power consumption metrics for servers, CPUs, GPUs running AI workloads
• Technologies used: AWS, EC2, ECS, Fargate, CloudMap, VPC, Route53, Lambda, EventBridge, CodeBuild/CodePipeline/CodeDeploy, Terraform, Docker, Linux, Bash scripting, Python, Flask, SQLAlchemy, SQL, MariaDB, InfluxDB, Telegraf, Prometheus, Zabbix, Kubernetes, Letsencrypt, certificate management

• Led the implementation of a critical backend initiative for the offer teasing feature, resulting in a 10% increase in users actively seeking counter offers.
• Contributed to high-impact features such as instant advice, customer ratings, and automatic contract switching, leading to increased user engagement and conversion rates.
• Built a gRPC service to integrate internal systems with the ERP platform, improving the reliability and observability of data exchange.
• Refactored parts of the legacy Ruby codebase into a more maintainable and scalable Elixir-based architecture.
• Delivered a greenfield project from concept to production on a new stack, integrating with internal services and managing infrastructure setup and deployment.
• Collaborated closely with the front-end team, product managers, and cross-functional team members to ensure the seamless integration of backend features, fostering effective communication and collaboration across disciplines.
• Stack: Ruby, Ruby on Rails, Elixir, OTP, Phoenix, REST, GraphQL, gRPC, PostgreSQL, AWS, Cognito, Lambda, SNS, SQS, Terraform, Helm, Docker, CI/CD, Grafana, Prometheus, Git, Agile Methodology.

• Technical Leadership & SW Architecture: Conducting trade-off analyses for technology stacks and leading the design and implementation of the software architecture, including mobile and backend solutions. Facilitating Event Storming workshops for DDD and software architecture.
• Strategic Direction & Organizational Development: Playing a key role in defining the strategic direction of the product and organization, exploring new models such as steward ownership.
• Lean Startup & Agile Development: Introducing Lean and Agile principles, implementing lean prototypes, and ensuring adherence to Lean Startup processes, iterative development from product/solution fit to product/market fit.
• Team Building & Collaboration: Facilitating workshops, retrospectives and future workshops to collaboratively develop tactics and strategies.
• Technologies: Flutter, JS/TS, React, Google Cloud, Firebase, Android, iOS.
• Organizational Methods: Lean startup, lean canvas, lean agile, event storming, retrospectives.

• Designed and deployed scalable REST APIs for enterprise clients
• Led migration of legacy systems to modern maintainable system, reducing deployment time and enabling daily deployments
• Mentored junior developers and collaborated cross-functionally to align technical roadmaps with business goals, improving team velocity by 50%.
• Tech Stack: PHP (Symfony), Golang, PostgreSQL, MySQL, GCP, Terraform, Kubernetes

• Provisioned a Kubernetes platform on Open Telekom Cloud CCE with comprehensive network isolation
• Built a VPC architecture with public, private, and data subnets
• Integrated managed services: RDS PostgreSQL, DCS Redis, DMS Apache Kafka
• Implemented monitoring with Cloud Eye and Log Tank Service

IMPACT: Cloud Infrastructure Engineer delivered a production-ready platform in 5 days with full network security isolation

• Contributed to over 20 successful projects

• Delivered MVP for strategic enterprise client including core Links banking APIs and interest rate calculations
• Integrated German banking APIs for automated credit checks
• Built lead distribution system that improved sales team efficiency by 40%
• Developed microservices architecture for mortgage offer generation from multiple banks
• Automated document verification process for customer KYC and income validation
• Implemented GDPR-compliant consent management for customer data protection
• Deployed and managed services using Kubernetes with custom YAML configurations
• Wrote comprehensive test coverage using Rspec ensuring code reliability
• Reduced customer onboarding time by 30% through workflow optimization

• Developed backend systems for the DWS Investment App, a white-label investment solution (robo-advisor), and an investment solution for institutional clients.
• Java 8-17, Kotlin, Spring Boot, Spring MVC, OpenAPI 3.0, JPA, JDBI, Oracle, Hazelcast, JXLS, Apache POI, Apache PDFBox, Apache Kafka & Avro, Active MQ, Elasticsearch, React Native, Spock Test, IntelliJ IDEA, Kubernetes, Helm, Microservices/Netflix-Stack, TeamCity, Splunk.
• Kanban team, continuous integration.
• Migrated existing applications from Deutsche Bank's private cloud environment to Azure as part of a carve-out.