SOAP Experts in Switzerland

• Led architecture and end-to-end engineering delivery for community-driven SaaS platforms serving 2M+ monthly active users.
• Architected and led the migration of a monolithic Python/FastAPI and PostgreSQL database and LangChain with codebase to an event-driven microservices architecture on AWS EKS, sustaining 10x traffic growth from ~150 RPS to 1,500+ RPS with zero re-architecture cycles.
• Defined and enforced engineering standards across services including API contracts, observability baselines, and deployment topology, reducing production incidents by 55% and MTTR from 2 hours to under 25 minutes within 9 months.
• Redesigned the caching and query layer using multi-tier Redis caching and database indexing/partitioning, cutting p95 API latency from 850ms to 180ms (78% reduction) and database CPU load by 45%.
• Built CI/CD platform on GitHub Actions, Terraform, and Kubernetes (EKS) with blue-green and canary rollouts, increasing deployment frequency from ~2/month to 8-12/day and reducing lead time from 10 days to under 6 hours.
• Implemented contract testing, automated load testing, and observability SLOs using Prometheus, Grafana, and OpenTelemetry, raising platform availability from 99.5% to 99.95% (10x reduction in error budget burn).
• Led and grew a cross-functional team of 8 engineers across backend, frontend, and DevOps, scaling headcount from 4 to 8 with 85% retention; owned hiring, onboarding, performance reviews, and career development.
• Partnered with Product, Design, and Client Success leadership as primary technical decision-maker; translated business goals into technical roadmaps and drove build-vs-buy decisions on authentication, search, and AI tooling.
• Introduced AI-assisted development workflows including automated code review and a RAG-based internal knowledge assistant using Graph (GraphRAG, Neo4J), increasing sprint throughput by 30% across two quarters.
• Owned incident command and production support rotation; established runbooks, postmortem culture, and on-call SLOs, reducing weekend paging incidents by 70%.
• Developed and optimized Algorithms using python libraries like Numpy and Pandas.

• Highest level achieved: Certified Mid-Level Angular Developer
• 13 technologies newly learned or refreshed with (re-)certifications
• Current: Docker, Azure, Quarkus

Technologies: Confluence, PlantUML, BPMN

• As part of the modernization of ING DiBa, the master data management system is also being renewed. As the Domain Architect for this topic, I had to find a way to combine global solution approaches from the headquarters in Amsterdam with local requirements from the German branch in Frankfurt.

• Implementation and maintenance of highly critical IAM solutions for B2B clients (SSO, MFA, SAML/OIDC, Entra ID, PIM/PAM)
• Security administration of Linux systems (CentOS, Red Hat) in Docker and Kubernetes environments
• Migration from Docker Swarm to Kubernetes
• Infrastructure automation with Terraform
• Planning and execution of risk assessments, threat modeling, and compliance reports
• Development and management of B2B applications (Java, REST/SOAP, Angular) and CI/CD pipelines (Python, Ansible, Jenkins, GitLab)
• Leading integration tests and UAT (Cucumber, Selenium, Katalon)
• Implementing monitoring and observability strategies with Grafana, Prometheus, and Splunk
• Integrating SAST tools like Snyk and SonarQube
• Release management and project coordination according to Scrum and SAFe
• Mentoring and technical support of junior team members

• Scalable platform for children and parents to discover future skills and technologies in a way that suits them
• React web frontend with microservice architecture in the backend (.Net Core, Azure Storage, Azure Entra ID, REST API)

• Support and further development of the Leegoo Builder
• Handling ad hoc requests
• Definition of rules/attributes and their rules
• Optimizing and managing SQL queries

• Build prototypes, expand AI skills, and practical application in a startup context.
• Transition phase: further training in prompt engineering, APIs, AI, working on independent prototype projects, and collaborating at a friend's startup.
• Technologies: LangChain, REST, Python, Java, JS, TS, Node.

• PoC for various platform integration functionalities using Backstage and Crossplane
• Implementation of improvements of developer experience with Azure AVD and DevSpace
• Manage application deployment infrastructure on Kubernetes clusters
• Manage CI/CD platform
• Manage deployments into Kubernetes (Rancher and AKS) and into Azure
• Act as security champion of the DevOps team
• Manage vulnerabilities and support dev teams to manage third-party vulnerabilities using JFrog Xray
• Support building the platform team
• Manage infrastructure as code using Terraform and Atlantis
• Build and integrate a platform and IDP using Crossplane

• Analysis, consulting, and development of a WordPress application for the digital processing and delivery of the Bauma chronicle archive

• Building a framework for automated website testing
• Testing, regression testing
• Defect management
• Release management, UAT, agile testing
• Feature discussions with business
• Test management

• Participating in a strategic enterprise project to introduce a centralized customer data platform ("Single Source of Truth") to eliminate redundant data storage and accelerate digital services

• Analyzing and documenting business and system requirements for migrating large, heterogeneous data sets (ETL) and for continuous data synchronization between core systems and the new platform

• Close collaboration with business units, data engineers and architects to gather and validate requirements, and to ensure data quality, consistency and regulatory compliance

• Defining the migration strategy, specifying ETL processes and synchronization mechanisms, and documenting technical interfaces

• Developing and executing test cases for migration and synchronization processes, and performing defect analysis to ensure data integrity and system stability

• Technologies: SQL, Microsoft SQL Server, Azure DevOps, Confluence, UML, RESTful Services, Swagger, Postman

• Consulting in ICT, business processes, system architecture, web integration, client-server computing, cross-platform development, responsive web design, social media integration, GUI
• Custom and specialized solutions
• Applications for small and medium-sized enterprises
• Web services, web applications, portals, application extensions (add-ins, plug-ins)
• Database design, interface solutions
• Outsourcing in various industries
• Solutions for other software houses
• Project management and project support (software engineering, coding)

• Created interfaces for transferring SD orders and customer master data (including various protocols and the ability to process erroneous data)
• Analyzed and adapted existing programs due to infrastructure changes
• SOAP and REST API for creating customer master data from SugarCRM
• REST APIs in Json (SD orders, invoices, payments, PDF forms)
• Logging program for REST APIs
• Created various invoice forms in 8 languages, including document links, email delivery, and PDF generation
• Provided data for the data warehouse
• Various user exits and enhancements in SD and FI
• Intercompany sales order creation, program for creating credit memos (uploads from Excel and the server)
• Reports (VAT, sales orders, invoices)
• Correction program for CO data
• Support for various interfaces, Notes, etc.
• Enhancement for Idoc INVOIC02
• XML file upload program (Rydoo) for posting cash receipts to FI (FB01)
• Created dunning forms in various languages (Smartforms and Adobe, including email delivery)
• Account statement program (ALV displaying postings, emailed to accounts receivable as a PDF using Smartform)

• Workstream Lead Order-to-Cash for Deloitte Consulting in the discovery phase for the “Vehicle Lifecycle Solutions” business unit in the S/4 HANA transformation program S4us