Sara Schönherr - Senior Software Developer with UI/UX Focus
Experience
Senior Software Developer with UI/UX Focus
vGen GmbH
Developed an interactive prototype for designing 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 the context of IT transformations.
The prototype combined data-driven analysis with guided questioning and interactive visualizations. A key part was integrating a RAG process to provide domain-specific EAM knowledge in context. The focus was on quick 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
Designed interaction models and created 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 employee workloads. The goal was to identify over- and underutilization early and provide project and team managers with solid data for decision-making.
Loaded existing data on projects, working hours, reports and absences via the HelloHQ API to calculate billing ratios and derive monthly available project capacities. The application visualizes available, allocated and free capacities and allows direct assignment of employees to projects and tasks.
Full-stack software development with Python, Django and Alpine.js
Connected to the HelloHQ API to aggregate and analyze 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 optimize scheduling in table tennis. The goal was to give players a simple and fast way to register and deregister for 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 to support spontaneous interactions and encourage early feedback. The application was implemented as a modern web solution with clear information architecture and intuitive navigation.
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 implemented 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 installation appointments in telecommunications partner communications. The application takes into account the monthly quotas available from the network operator and incoming customer requests to support reliable and punctual planning.
Provides a modern web-based interface to view, analyze and export relevant data. The solution improves customer satisfaction through more reliable appointment promises 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 predecessor 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
Created a software solution to account for relevant customer contracts under IFRS 15 in the telecommunications sector. The project aimed to automatically detect, assess and process contract changes relevant to accounting across multiple connected source systems. Contract and customer data were consolidated, validated and the resulting business transactions sent to a connected SAP target system.
A special focus was on ensuring data quality and traceability in a business-critical environment. To do this, a web-based user interface was developed to display transactions, failures and validation errors transparently, allow manual corrections and export affected data. The solution was gradually integrated into an existing system landscape and fully replaced the previous system.
Mapped processes and data capture in the IT system landscape
Implemented the detection and processing of relevant business processes with Java, SQL and Spring Boot
Developed 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 interface with TypeScript and React to assess process quality
Replaced the legacy system including data migration
Provided user support and assisted with rollout and operations 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 business users. Her expertise is based on many years of experience in designing and developing business-critical software systems that demand high standards for data quality, traceability, security and maintainability.
A key focus of her work has been modernizing critical legacy systems. In the long-running IFRS15 accounting project, she not only led the implementation of complex validation rules with Java and Spring Boot, but also took responsibility for the flawless migration of sensitive contract data from legacy systems, including version-controlled management of schema and data changes.
Sara's profile also includes hands-on experience with modern AI solutions. She developed an AI-powered prototype designed to validate its use in enterprise environments. She combined retrieval-augmented generation (RAG) with modern front-end frameworks like Angular 20 to make knowledge about IT systems and processes accessible in companies.
In addition to her development skills, Sara has solid experience in UI/UX design (Figma). She translates business requirements not only into code, but also into intuitive user interfaces and provides professional support to users in rolling out new systems. As a mentor for code reviews and architecture questions, she is an asset to any development team.
We therefore strongly recommend Sara for challenging software development projects that require a balance of business complexity, technical quality and user orientation.
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 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 in Practical Computer Science · Practical Computer Science · Hagen, Germany
HTW Dresden
Bachelor of Science in 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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Experience
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Expertise
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