Software Developers in Switzerland

Reduced time-to-market by optimizing CI/CD pipelines. Employees without customer VM access can now deploy. Increased system stability and performance and reduced maintenance effort through systematic database cleanup. Restricted rights for Flyway migrations versus service users. Improved transparency and decision-making basis with enhanced Grafana dashboards for response times, optimized logging, and standardization with Loki. Reduced security risks by consistently applying security best practices such as removing the public schema in PostgreSQL, individual service user permissions, and Docker security context. Facilitated knowledge transfer and sustainable process improvements by creating process diagrams and implementing various concepts. Conducted code reviews across multiple repositories.

"ZLF – Future Billing Solution"

Cross-module S/4HANA

• Technical consulting and development in the area of S/4 Master Data Governance (MDG-BP)
• Various developments in HR-BP integration, order-to-cash, SAP CAR analytics data modeling, interfaces from and to third-party systems. (native HANA, CDS, RAP, Fiori Elements, OData)

• Solely responsible for managing procurement operations
• WTO tenders in an open procedure
• Invitation process
• Direct call-offs and mini-tenders from framework contracts
• Simap.ch, SuisseOffer.ch, Confluence, Jira, Microsoft 365 applications

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

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

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

• Designed and executed automated and manual test cases for REST APIs and UI workflows using Selenide, Selenium, and Postman.
• Developed and maintained Gatling-based performance tests for simulating user load and validating system responsiveness and stability under stress.
• Integrated test suites into CI/CD pipelines with Jenkins, enabling rapid and reliable delivery cycles.
• Employed Splunk, Grafana, and Prometheus to monitor logs, track metrics, and perform in-depth application performance monitoring (APM).
• Utilized Swagger for validating and documenting API contracts and ensuring consistency across environments.
• Created and managed isolated test environments using Docker, enabling reproducible and consistent test execution.
• Collaborated with cross-functional teams using Confluence, Jira, and Bitbucket for agile planning, documentation, and version control.
• Worked in a Java/Spring Boot tech stack, leveraging Maven for project build automation and IntelliJ IDEA for development and debugging.

Key Achievements:

• Built a reusable Selenide-based UI automation framework that reduced test creation time by over 50%.
• Automated end-to-end test scenarios for critical business workflows, increasing test coverage and release confidence.
• Designed a modular Gatling load testing framework, used for continuous performance benchmarking.
• Detected and resolved several critical production performance issues through proactive APM and stress testing.

• Maintained PeopleSoft HCM 9.2/Tools 9.59.08 for batch and interface programs
• Used Application Designer, Application Engine/Packages, PeopleCode
• Developed BI/Excel reporting and proof of concept
• Performed business analysis, SQL reports and documentation

• Worked in mixed teams with several clients
• Performed requirement engineering, proposal and time estimation
• Developed ACLs, business rules, flows, workflows, catalog items, various scripts, UI actions, policies, scoped applications
• Customized mobile apps: Now Agent and Now Mobile
• Implemented integrations using the Integration Hub
• Coordinated continuously with clients during development
• Performed testing and helped clients with testing
• Deployed to production and applied main version upgrades and patches
• Managed CMDB, domain separation and asset management
• Integrated between instances at different clients
• Developed GlideScript: business rules, scripted REST endpoints, extension points, fix scripts, background scripts

• Analyzed migration strategies after Camunda 7 was declared end of life with extended support until 2030.
• Evaluated potential migrations to Camunda 8, Flowable, and Operaton.
• Conducted a proof of concept demonstrating that existing projects could be migrated to both Flowable and Operaton.
• BPMN
• DMN
• Confluence
• Flowable
• Operaton

• Developed ERC20 smart contracts with a mechanism for vesting, including deployment, testing, and auditing.
• Wrote a JavaScript application for managing transactions in Bitcoin, Ethereum, and SEPOLIA with a custom token.

• The comdirect app for iOS offers an intuitive and user-friendly mobile banking app that allows users to manage their banking efficiently and securely.
• Central features: bank transfers, portfolio analysis, personalized financial manager to facilitate daily banking and financial planning.
• Users: over 1 million.
• Written in native Swift using UIKit and SwiftUI.
• App-wide MVVM and Coordinator design pattern.
• Partial reactive programming using Apple’s Combine framework or vendor RxSwift.
• API integrations and data structures with JSON.
• Documented clean code.
• Continuous integration with Git and Jenkins.
• High unit test coverage with XCTest.
• Agile project setup according to Scrum.

• For the internal MIS, which gathers data in a complex, comprehensive system landscape and loads it into a central database via ETL, existing processes and packages had to be maintained and new KPIs analyzed, specified, and implemented.

• Implementations of a code refactoring framework able to refactor thousands of repositories leveraging Generative AI
• Use Python (Django, Flask, FastAPI), Java and Typescript in Azure Cloud (Data Lake, VMs, AI) and GitLab infrastructure
• Mentoring and pair programming
• Obtained Azure AI-900 and AI-102 certifications