Swagger Expert in Frankfurt

Ornel Franck W.

Purchasing Manager, Logistics, IT Manager & Software Architect

Last position:

Sales Partner at ERGO PRO

Industry: Insurance, Trade, IT
Customers & Projects: Consulting and selling insurance and similar services
Main tasks: Insurance consulting (health insurance, retirement planning, wealth building); commercial services, inside and field sales; sales data analysis and forecasting; customer consulting and support; opening a new sales headquarters for private and business customers; business development & innovation management; business use case development; process optimization; stakeholder management; team leadership and training; preparation and delivery of trainings;
Technologies used: Microsoft Office 365, Microsoft Teams, Jira, Draw.IO, Camunda 8, Java (8, 17,21,25), Git, Spring Boot, Spring Batch, Spring Data REST, Spring Web, Spring Security, J-Unit, Playwright, Lombock, Vaadin, H2, PostgreSQL (16, 17 18), pgAdmin, Docker, LLMs, JasperSoft Studio, JasperReports

Minh D.

Project Manager / Business Analyst / Application Manager

Bad Vilbel

Last position:

Project Manager / Business Analyst / Application Manager at Finance and Insurance

Introduction of 5 different process applications for different teams
Release planning: scope and time management
Resource/capacity planning
Conducting Sprint Planning / retrospectives
Increment planning (several sprints)
Preparation of Steering Committee meetings / reporting to the Board
Coordination / alignment with external suppliers / deliveries
Resource planning for multiple projects
Coordination with business department and development team
Identification of best practices with IBM BAW
Cost control and planning for the project team and external service providers
Collection of KPIs using LogScale
Analysis of application errors with LogScale / Queries
User Story definitions / coordination of requirements with the business department and development team
Testing and defect tracking
UI/UX design of applications
Preparation and moderation of Brown-Paper workshops
Test concept, test data, test organization, test execution
Collection of team velocity / metrics
Test execution
Script for automated testing
Test organization with business department and IT
Recording and prioritization of defects
Establishment and operation of the application
Establishment of application monitoring with LogScale Dashboards
Checking health endpoints with PowerShell
Post Mortem analysis
Establishment of Incident Management
Establishment of Problem Management
Analysis of errors using LogScale Queries and Dashboard
Pre-processing of data for AI
Evaluation using AI language models (Meta Llama 3.3 LLM and deepset Haystack) and RAG
Installation of runtime environments for LLMs (Large Language Model)
Evaluation of various LLMs
Installation of RAG (Retrieval Augmented Generation) and integration with LLM
Extraction of unstructured data with LLM and RAG
Project based on IBM BAW (Business Automation Workflow), Websphere Liberty, Domea, d.3, REST, LogScale (formerly Humio), Swagger, Powershell, JIRA, Confluence, Lucom Interaction Platform (LIP), Mattermost, Jabber

Uday V.

Full Stack Java Developer and DevOps Engineer

Last position:

Senior Full Stack Java Developer & DevOps Engineer at Deutsche Börse (DBAG)

Project: SCS (Settlement / Clearing Services)

Settlement platform serving multiple trading and clearing venues — counterparty risk safeguarding, settlement volume reduction, central risk management, and post-trade anonymity.

Technologies: Java 17, Spring Boot 3, Microservices, Spring Data JPA, SonarQube, Fortify (SCST), Mockito, Jenkins, OpenShift, Maven, Podman, GitHub, JIRA, Liquibase, Swagger, AMQP, Apache Camel, Terraform, PostgreSQL, Instana, Graylog.

Identified and remediated CVEs in third-party libraries using SCA tooling, strengthening the security posture of production components.
Maintained 90% code coverage with SonarQube, improving code quality and reducing production defects.
Enabled mTLS for database authentication and message broker connections, enforcing encrypted, certificate-validated communication.
Designed and deployed microservices with asynchronous, REST-based communication between components.
Optimized a high-volume REST API (~200K requests) by reducing response time from 3s to 2s (33% improvement), boosting throughput and reliability under production load.
Automated build and continuous integration pipelines using Maven and Jenkins.
Orchestrated containerized workloads on Podman/OpenShift and governed schema evolution with Liquibase, ensuring reliable, repeatable deployments across all environments.
Optimized Java code and implemented EHCache-based caching, improving application performance.
Streamlined release management by governing application images, JAR versions, and dependencies through DBAG Artifactory, ensuring version consistency and audit traceability across environments

Silke D.

Requirements Engineer

Schwalbach am Taunus

Last position:

Business Analyst at Rentenservice

Developed a digitalization strategy Analyzed legacy systems and designed a new IT landscape

Gathered current work structures and processes
Identified optimization opportunities
Developed a tool landscape to support business processes
Created a request for proposal
Defined epics and user stories
Modeled processes

Technologies/Methods: Confluence, MSTeams, MindManager, PlantUML, JIRA

Ralitsa P.

Process, Project and Requirements Manager, Customer Project @ RUBINLAKE

Last position:

Process, Project and Requirements Manager, Customer Project @ RUBINLAKE at 1&1 Versatel GmbH

Introduction of a new workflow tool for Fibre Connectivity & Broadband Delivery
Requirements design, estimation and prioritization
Creation of rollout and project plans
Management of the development team according to Scrum
Design and project management of the API interface to existing tools
Process modeling for the new Order Dispatching team (FCD & BD)
Design of processes within and outside the team
Requirements design and implementation of the necessary tools
Creation and calculation of production KPIs

Werner K.

Test Coordinator, Designer and Engineer

Bad Homburg

Last position:

Test Coordinator, Designer and Engineer at IBM

Testing the SekIDP and related components
Test design, execution and automation, microservices, GitHub Enterprise, Eclipse, Katalon Test Platform, API Testing, Confluence 8, JIRA/Xray, Draw.io, Swagger/OpenAPI, Postman, Docker, Kubernetes, Podman, PuTTY, E-Health, Telematik, Gematik standards, EPA, E-Rezept, sektoraler IDP, encryption, XaDES, PaDES, DICOM, HL7, FHIR, IHE, ICD, SSO, SAML/Shibboleth, OAuth, smartcards, JWT, two factor authentication Android and iOS, Wireshark, BrowserStack, Cypress, gRPC, REST, SOAP, WS-Security, Linux Shell, PowerShell, SSH/SSL, Java, Kotlin, Cordova, Gradle, Groovy, Python, TypeScript

Alexey L.

Frontend Styler

Last position:

Frontend Styler at Finanz Informatik

Implementation of business transaction layouts for the online banking UI in compliance with BITV (accessibility)
Technologies: JavaScript, jQuery, LESS

Leonid R.

Business Analyst | Requirements Engineer (certified) | Requirements Manager

Last position:

IT Business Analyst / Requirements Engineer at S-Payment GmbH / Sparkasse (DSV-Gruppe)

Business analysis of payments for the introduction of Wero EPI in Germany.
Analysis and optimization of merchant processes in the context of acquiring and issuing.
Analysis of interfaces for instant payments.
Analysis of SCT-Inst processes, settlement mechanisms and reporting processes.
Identification and clarification of gaps in merchant processes.
Analysis and documentation of clearing and settlement processes.
OSPlus process analysis and documentation.
Coordination and alignment with scheme management as well as various payment service providers and financial institutions on merchant processes.
Preparation and follow-up as well as active participation in EPI meetings on technical coordination and regulatory topics in payments, including content familiarization and prioritization.
Preparation and documentation of project and steering committees in the EPI environment.
Creation of status reports for the subproject.
Maintenance and structuring of Confluence pages for project documentation.
Coordination and alignment with the issuing teams on individual customer processes as well as aligning with bank processes and acquirer processes in the Wero environment.
Communication with payment service providers regarding merchant and bank processes in the Wero environment.
Organizational support for project management in special tasks in the EPI and Wero environment.
Digital filing and documentation in Confluence and Microsoft Teams.
Planning, implementation and tracking of work packages and steps.
Quality assurance and project control.
Consulting on IT strategy, IT architecture and interface management in the EPI and Wero environment.
Technical environment: Jira, Confluence, XML, JSON, MS Office (Word, Excel, Teams, PowerPoint), SharePoint, Draw.io, Innovator, 3rd-level support, ITIL, creation and updating of software documentation, interface management, OSPlus, Scrum, KYC, payment, European Payments Initiative (EPI), Wero, Microsoft Loop, Instant Payments, SCT-Inst.

Illia S.

Front-End Developer

Last position:

Front-End Developer at Tangram Internet Services GmbH

IAUP (Interregional Academy of Personnel Management) commissioned the development of a distance learning system for its secondary school subdivision.
Development of the website [link]
Development of a billing system and integration with various payment systems
Development of a distance learning system based on the open source Moodle solution
Integration of the distance learning system into the user office on the [link] website
Front-end: Vue.js v2, Nuxt.js, JavaScript, HTML, CSS, SCSS
Back-end: LAMP (Linux, Apache, MySQL, PHP), PHP Framework Laravel, Redis, Swagger, MySQL 8.x, PayPal API
DevOps: Docker, CI/CD, GIT

Jonas W.

Frontend

Frankfurt

Last position:

Fullstack Developer at Soulven Agency

Working for customer and internal projects ranging from B2C, B2B applications
Development and maintenance of customer-facing and internal applications across B2C and B2B domains
Responsibility for technical direction, architectural decisions and code quality standards
Design and implementation of scalable application architectures, including modular frontend and service-oriented backend structures
Conceptual planning and technical execution of the agency website relaunch in Angular
Rapid prototyping and MVP development for B2B customer projects in the pharmaceutical sector with Vue.js
Creation of first MVPs for 3D rendering–based products, including real-time visualization and interactive experiences
Strong UX/UI expertise with a focus on gamification, user engagement and conversion-driven interfaces
Close collaboration with product management, design and stakeholders to translate business requirements into technical solutions
Agile software development using Scrum, including sprint planning, reviews and retrospectives, supported by Azure DevOps
Full-stack development using React, Angular, TypeScript, Vue.js, HTML5, CSS3/SCSS, C#, .NET, Node.js, RESTful APIs, Unity, Azure DevOps, Git and CI/CD pipelines

Adil S.

Mobile/Backend Developer

Frankfurt

Last position:

Mobile/Backend Developer at Freelance

Built a cross-platform mobile application using React Native that interacts with IoT devices via RESTful APIs
Implemented state management with Redux and integrated IoT-specific components for smooth data visualization and device control
Developed RESTful APIs using Node.js and Express, utilizing MongoDB for scalable data storage
Facilitated secure communication between the mobile app and IoT devices, enabling device onboarding, status monitoring, and control commands
Implemented real-time data synchronization and optimized data flow to minimize latency

Timur Y.

Lead Frontend Developer | Fullstack Developer

Eschborn

Last position:

Lead Frontend Developer | Fullstack Developer at Finanz Informatik

Further development of an application for managing personnel changes.
Development of frontend and backend.
Implementation of the frontend with React and Material UI.
Implementation of the backend with Java and Spring Boot.
Use of React, Java, Spring, TypeScript, next.js, Material UI, Github Enterprise, Figma, Docker, Playwright, swagger, swagger UI, OpenAPI, npm, yarn, git.

Thomas F.

Senior Fullstack Developer .NET | Angular | SQL

Rodgau

Last position:

Senior Fullstack Developer at DB InfraGO AG

Frontend: new development in Angular
Backend: new development in ASP.NET Web API
Database: modeling, implementation, and operation based on Microsoft SQL Server
Requirements management, design, and implementation
Deployment, maintenance, operation
Knowledge transfer to internal staff
Agile development (SCRUM)

Igor P.

Senior Frontend Developer

Rüsselsheim

Last position:

Senior Frontend Developer at Objego GmbH

Within the project, Objego's digital platform for real estate management was further developed.
Further development of various software modules within the application.
Continuous improvement and optimization of existing functionalities to enhance performance and user experience.
Design and implementation of unit tests to ensure code quality and stability.
Close collaboration with the QA team to quickly fix bugs.
Implementation of new features in coordination with stakeholders and end users.
Active member of the Scrum team with a focus on agile methods and continuous improvement of the software.
Technologies: Angular 16/17, Material, Angular CDK, Angular Elements, Nx, NgRx, NgNeat, NgX-Translate, NgX-Charts, NgX-Lottie, NgX-Markdown, Sentry, Azure AI Form Recognizer, Lodash, Dayjs, Flatpickr, Lottie-Web, Mixpanel, RxJS, Prettier, ESLint, Webpack, Cypress, Playwright, Jest, Husky, TypeScript, Node.js, Zone.js, Docker, Spring Boot, Git, Figma, Figma Token, Storybook, Jira, Confluence, Atlassian, Gitlab CI/CD, Codecov, Custom Design System, Mockoon.

Ingo D.

Analytics