Selenium Experts in Cologne

Hooman Behmanesh

Fullstack Developer

Last position:

Fullstack Developer at Möbel Roller GmbH

Further development of the existing e-commerce platform based on SAP Commerce (Hybris) to meet the growing demands of digital commerce.
Ensuring the scalability and performance of the backend, so the platform remained stable and efficient even under heavy user load.
Development and integration of new OCC REST APIs and services for modular extensions and flexible adjustments, to implement new features quickly.
Optimization of data flows and interfaces, which significantly improved platform efficiency and system performance.
Ensuring a maintainable and scalable code base by using Clean Code principles, proven design patterns, and a future-proof architecture.
Reduction of errors through extensive testing with JUnit, Mockito, and load tests with Gatling, supported by the introduction of automated test processes.
Improved system performance through targeted refactoring measures and efficient database queries, especially to handle peak loads.
Use of modern cloud and monitoring tools such as Kubernetes, Google Cloud Platform (GCP), and Grafana to ensure a stable and monitored infrastructure.
Clear improvement in efficiency, scalability, and reliability of the platform, which now meets the demands of a dynamic and growing e-commerce market.

Christoph Sawicki

Test Manager

Last position:

Test Manager at Logistics

Coordination and planning, execution, documentation, and analysis of test cases
Development of test concepts considering best practices (e.g., test pyramid) with a focus on reliable, automatable test runs
Implementation and maintenance of test cases according to the test concepts
Technologies: Citrix Workspace, Shopify, Jira, Xray, MS Teams, MS SharePoint, Confluence, MS Office 365

Yaroslav Shargorodskiy

Senior Low-Code Consultant

Last position:

Senior Low-Code Consultant at Freelancer

Structured analysis and evaluation of business processes
Gathering, documenting, and prioritizing requirements
Creating business-friendly and technically executable process models
Use of Camunda tools
Deriving requirements and interfaces from BPMN diagrams
Coordination with stakeholders and business units
Translating business requirements into technical solution designs
Implementing efficient and tailored applications
Systematic collection, analysis, and documentation of requirements
Prioritizing and validating requirements in close collaboration with stakeholders
Alignment between business and development to ensure shared objectives
Creating use cases, user stories, and acceptance criteria
Continuous requirements and change management throughout the project lifecycle
Define project goals and create project plans
Delegate tasks and monitor project progress
Monitor budgets and inform stakeholders
Mendix: Architecture, development, and maintenance of custom applications (Microflows, Domain Model, Security, XPath)
Modeling Mendix workflows for process optimization
Develop scalable apps with Mendix including REST/SOAP integration with SAP, SQL, Azure & SharePoint
UI design for Mendix using Atlas UI, Fluent UI, HTML, CSS, JavaScript
Develop web & mobile apps with Mendix using agile methods (Scrum, Kanban)
Implement business logic with Mendix Microflows and Nanoflows
Performance optimization and architecture improvements for Mendix applications
Conduct Mendix training
Create technical documentation and best practices for Mendix
Coaching and mentoring for low-code development with Mendix

Thomas Pawlitzki

Freelance Software Architect

Last position:

Freelance Software Architect at Self-employed

Ralph Konitzer

Product Owner / Business Owner

Rommerskirchen

Last position:

Product Owner / Business Owner at AXIS Management Consulting GmbH

Full product responsibility from a business perspective: requirement analysis, UX design, product strategy, and go-to-market implemented without an internal dev team using fully AI-supported development (Claude Code / Anthropic)
Technical differentiation: KRITIS-compliant air-gapped deployment (Windows/NSIS), GDT interface for PVS integration, DATEV-LODAS export for payroll
Managed pilot operation with initial external client (Dormagen medical practice): structured requirement gathering, test support, error analysis, and release management
Developed rollout and sales strategy for market entry in the segment of private practices and small medical centers
Human-in-the-Loop development principle: business decision → AI implementation → manual review → approval → release – each sprint documented in Jira (TIME project), every change traceable via co-authored commits
Product outcome: Tauri/Rust desktop app with GDT watcher, multi-tier model (Starter/Professional/Enterprise), cloud mirror on Hetzner/Traefik, complete ISMS framework based on ISO 27001 and BSI basic protection as product foundation
Direct method validation for the test manager role: hands-on experience with quality assurance of AI-generated products from a user perspective, review gate discipline, release approval under GDPR and the EU AI Act

Ayhan Gezer

Senior QA Engineer / Test Automation Engineer / SDET

Last position:

Senior QA Engineer / Test Automation Engineer / SDET at Rewe digital

Consulting, designing, and implementing the software testing lifecycle for multiple Android apps and backends Introducing test automation with Appium, SpringBootTest, RestAssured Setting up and managing emulators Developing an E2E library, an integration library, a Testcontainers library, and other libraries Developing, implementing, and advising on CI strategies Building the test environment with Testcontainers and virtualization Developing and implementing test cases for integration tests and end-to-end tests Establishing a maintainable test architecture with low entry barriers to simplify the creation of automated tests Some tools and technologies used: JUnit, RestAssured, Testcontainers, Kubedock, Appium, Android emulator, Jira Xray, Mockito, WireMock, Spring Framework, Kotlin

Hassan Amjad

IT Consultant

Düsseldorf

Last position:

IT Consultant at ALDI South (Albrecht's Discount)

Supporting the DevOps team in Terraform-managed, multi-region AWS infrastructure to achieve environment parity.
Developed end-to-end CI/CD pipelines using AWS CodePipeline, CodeBuild, and CodeDeploy, automating the build and deployment.
Maintained pre- and post-deployment scripts to automate critical tasks such as database schema migrations and environment sanity checks.
Implemented CI/CD flow specifically for hotfixes via separate Git branches, managing back-merge activities from feature branches to release branches to ensure code integrity through automated conflict resolution.
Deployed a dedicated, lightweight sanity check application hosted cost-effectively on Azure Container Apps to run automated health and basic functional checks as a post-deployment activity triggered via pipeline.
Investigated production incidents through code changes and AWS CloudWatch logs.
Coordinated integration of Dynatrace APM and its APIs for monitoring purposes.
Full stack QA strategist for a high-traffic e-commerce platform built on a layered architecture for the back-end testing of core platform services, especially the order management system in Zed and Glue layers.
Managed automation activities, testing process, and refactoring practices.
Responsible for framework migrations, setup, and training for new automation frameworks.
Promoted a shift-left approach within the QA team and created the test concept.
Participated in meetings with IT managers, business owners, product owners, and team members.

Predrag Perovic

Test Developer | Test Automator

Leverkusen

Last position:

Test Developer | Test Automator at CreditReform

Technologies: Java 25, Selenium, Insomnia, SSO, GitLab, Jenkins, Docker, Kubernetes, Jira, IntelliJ, Nexus, Oracle, MariaDB, Spring Boot, Grafana, Concept Board, Vue.js, OpenAPI, Kotlin. Implementation, maintenance, and extension of automated end-to-end regression tests for UI and API interfaces. Appropriate and targeted test automation across multiple software products, including Java-based Windows applications. Automating business processes with Selenium, reset jobs, and DB import jobs, as well as creating test concepts, test case descriptions, and structured bug reporting.

Jeanne Yap

Process Engineering Intern

Last position:

Process Engineering Intern at Procter & Gamble

Independently initiated and deployed automated validation workflows using Python, cutting manual processing by 58% and improving efficiency
Developed a machine learning model for synthetic defect generation, reducing downtime and production costs; deployed locally and via Databricks and Azure AI Factory
Utilized a small dataset of image data from the production lines and extended this dataset with training on models like cycleGAN and pix2pix
Built and optimized the Linux-based development environment for training 3D models; maintained reproducibility via GitHub
Presented technical insights to cross-functional teams (engineers, QA, project managers), ensuring alignment of ML solutions with operational needs

Vladimir Maznicenko

Developer

Brühl

Last position:

Developer at Financial services provider

Support and further development of a framework for developing applications in a banking association: DynS/OSPE
Migration of the framework to Java 11 and Java 17
Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira

Pappu Prasad

Senior Cloud Consultant (AWS Services and Consulting)

Last position:

Senior Cloud Consultant (AWS Services and Consulting) at devoteam GmbH

Developed automated ETL pipelines with AWS Glue and Athena to ensure consistent data quality and governance requirements
Implemented validation, anonymization, and encryption measures for data in compliance with GDPR
Optimized cloud costs by introducing FinOps practices and increased transparency for business units
Monitored performance, performed root cause analyses, and ensured adherence to SLAs
Supported data and solution architects in building scalable data models for ML and analytics scenarios

Jacqueline Haefke

Düsseldorf

Last position:

Kitchen Appliance Manufacturer

Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks

Fabian Kramer

Managing Partner

Last position:

Managing Partner at FK Solution Design GmbH

Founded FK Solution Design GmbH and acts as managing partner.
Optimizes existing system landscapes, reduces data silos, and connects software systems.
Enables more efficient data usage and reduces process lead time.

Kay Odenthal

Fullstack Developer

Last position:

Fullstack Developer at INIT GmbH

Development of monitoring and control systems for public transport
Development of a platform for real-time monitoring of passenger information and ticketing systems and an application for remote control and status monitoring of access systems
Development of dynamic forms, complex tables, real-time dashboards (SignalR), and reusable components in the frontend (using Storybook)
Implementation of REST interfaces in the backend
Deployment to Microsoft Azure Cloud
Technologies used: Angular 20, Angular Material 3, Dev Extreme, Storybook, C#/.NET 10

Building test automation with Cucumber