Sara Schönherr-Senior Software Developer with UI/UX Focus
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Experience
Senior Software Developer with UI/UX Focus
vGen GmbH
Developed an interactive prototype for an AI-powered enterprise architecture management tool. The goal was to clearly present complex relationships between IT systems, business processes, and departments, and to support decision-making in IT transformation contexts.
The prototype combined data-driven analysis with guided queries and interactive visualizations. A key part was integrating a RAG process to provide domain-specific EAM knowledge in context. The focus was on rapid idea validation, user-centered interaction design, and the technical feasibility of a scalable overall concept.
Designed, implemented, and validated a RAG process for domain-specific EAM knowledge using Python, LangChain, and graph/vector databases (Neo4J, Milvus)
Conducted business and technical requirements analysis and defined an MVP
Developed the architecture and technology concept using Angular, Spring Boot, GraphQL, and Kubernetes
Created interaction design concepts and a brand style guide with Figma
Built interactive prototypes with Angular, Konva.js, and TypeScript
Integrated CI/CD processes with GitLab CI/CD
Senior Software Developer
vGen GmbH
Developed a web-based capacity planner for realistic planning and optimization of staff workload. The goal was to identify over- and underutilization early and provide project and team leaders with a solid basis for decision-making.
Existing data on projects, working hours, reports, and absences were loaded via the HelloHQ API to calculate billing rates and derive monthly available project capacities. The application visualizes booked, planned, and free capacities and allows direct assignment of staff to projects and tasks.
Full-stack software development with Python, Django, and Alpine.js
Connected to the HelloHQ API for aggregating and analyzing project and time data
Developed a responsive user interface with Tailwind CSS
Integrated CI/CD pipelines with GitLab CI/CD and Docker
Conducted architecture and code reviews to ensure quality and maintainability
Software Developer
vGen GmbH
Designed and developed a user-centered digital product to improve scheduling in table tennis sports. The goal was to give players a simple and fast way to sign up and cancel training sessions and matches, increasing commitment and planning for teams and coaches.
Focused on a low-threshold user experience design with a mobile-first approach that supports spontaneous interactions and encourages early feedback. The application was implemented as a modern web solution with clear information architecture and intuitive operation.
Full-stack software development with Java, Spring Boot, Angular, and PostgreSQL
Implemented a mobile-first strategy with Angular, Tailwind CSS, and Material UI
Developed and secured the application through test automation with Karma/Jasmine
Created and applied a consistent corporate design with Figma
Conducted architecture and code reviews
Integrated CI/CD processes with GitLab CI/CD and Docker
Senior Software Developer
vGen GmbH
Developed a software solution for automated scheduling of customer activation appointments in telecommunications companies' partner communication. The application takes into account monthly available slots from the network operator and incoming customer requests, supporting reliable and on-time scheduling.
Through a modern web-based user interface, relevant data can be viewed, analyzed, and exported. The solution increases customer satisfaction with more reliable appointment commitments and ensures better compliance with contractual obligations to the network operator.
Full-stack software development with Java, Spring Boot, React, and TypeScript
Migrated and cleaned up legacy data from a previous system using Oracle SQL
Developed and secured REST APIs, including authentication with OAuth 2.0 and Keycloak
Provided user support and established support and operations processes
Conducted architecture and code reviews
Software Developer
vGen GmbH
Developed a software solution for accounting-relevant customer contracts under IFRS 15 in a telecom environment. The project's goal was to automatically detect, evaluate, and process accounting-relevant contract changes across multiple connected source systems. Contract and customer data were consolidated, validated, and the resulting transactions were sent to a connected SAP target system.
A special focus was on ensuring data quality and traceability in a business-critical environment. For this, a web-based user interface was developed to display transactions, interruptions, and validation errors transparently, allowing manual correction and export of affected data. The solution was gradually integrated into an existing system landscape and fully replaced the previous solution.
Mapped processes and captured data in the IT system landscape
Implemented detection and processing of relevant business processes with Java, SQL, and Spring Boot
Implemented validation rules for processed customer contracts (completeness, correctness, timeliness, integrity)
Captured and transmitted accounting-relevant information to the SAP target system via SOAP
Designed and developed a monitoring user interface with TypeScript and React to assess process quality
Replaced the legacy solution, including data migration
Provided user support and assistance during the rollout and operation of the solution
Industry Experience
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Experienced in Telecommunication, Information Technology, and Sport.
Business Area Experience
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Experienced in Information Technology, Accounting, Product Development, Business Intelligence, and Quality Assurance.
Summary
Sara positions herself as a Senior Full-Stack Developer with a strong focus on combining complex backend logic with intuitive user interface design for specialized end users. Her expertise is based on several years of experience in designing and developing business-critical software systems that demand high standards in data quality, traceability, security, and maintainability.
One of her core focuses has been modernizing critical legacy systems. As part of a long-term IFRS 15 accounting project, she not only led the implementation of complex validation rules using Java and Spring Boot but also managed the error-free migration of sensitive contract data from legacy systems, including version-safe handling of schema and data changes.
Sara's profile also includes hands-on experience with modern AI solutions. She built an AI-powered prototype designed to evaluate its use in enterprise settings. She combined Retrieval-Augmented Generation (RAG) with modern frontend frameworks like Angular 20 to make knowledge about IT systems and processes in companies easily accessible.
In addition to development skills, Sara brings solid UI/UX design experience (Figma). She translates business requirements not only into code but also into intuitive interfaces and provides user support during the rollout of new systems. As a mentor for code reviews and architecture questions, she is a valuable addition to any development team.
We highly recommend Sara for challenging software development projects that require a balance of domain complexity, technical quality, and user focus.
Skills
Frontend/backend Development (Full Stack)
Software Architecture (Clean Architecture, Domain-driven Design)
User Interface/user Experience Design
Agile Project Management (Scrum)
Database Migration & Administration
Llm-based Systems & Rag
Continuous Integration/continuous Delivery
Ai-powered Backend Services With Python, Langchain, Neo4j, Milvus
Web Development With Typescript, Especially Angular, React, Tailwind Css
Api Development (Rest, Graphql, Soap)
Authentication (Oauth 2.0, Keycloak)
Software Development With Spring Boot, Maven, Gradle & Intellij Idea
Ui/ux Design, Graphics Creation, And Prototyping With Figma & Affinity
Industries: Telecommunications
Industries: Enterprise Architecture & It Transformation
Building Relational Databases With Flyway, Liquibase, Oracle Sql, Postgresql, Jpa, Hibernate
Setting Up Ci/cd Pipelines, Including Test Automation With Gitlab Ci/cd, Docker, Kubernetes
Java (Spring Boot)
Javascript (Node.js)
Typescript (Angular, React, Vue)
Python (Django)
Oracle Sql
Postgresql
Neo4j
Milvus
Windows
Linux
Languages
Education
FernUniversität in Hagen
Master of Science, Practical Computer Science · Practical Computer Science · Hagen, Germany
HTW Dresden
Bachelor of Science, Media Informatics · Media Informatics · Dresden, Germany
b.i.b. International College
State-Certified Technical Assistant for Computer Science · Dresden, Germany
Certifications & licenses
AZ-204: Microsoft Azure Developer Associate
committance AG, Montabaur
AZ-900: Microsoft Azure Fundamentals
Gerstaecker Verlag GmbH
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