René Wick-Developer
Check rate
Experience
Development of an AI-supported system for lead generation
As part of an in-house development project, a pipeline for automated lead generation was created as the second stage of a preceding system for project monitoring. Based on a list of freelance project URLs (freelancermap), qualified lead records are generated, including company, contact person, official and personal email address, and the appropriate form of address (informal/formal). The technologies used were Python (openpyxl, requests) as well as an LLM agent workflow in VS Code (GitHub Copilot Chat) with a custom slash command and extensive rule set; search APIs (Serper.dev) are connected for research. My tasks included the full concept and development. The core is a rule set of around 480 lines that guides the LLM agent deterministically through extraction, website and email lookup, duplicate matching (against existing provider lists), and the creation of a structured JSON output. Deterministic steps (Excel matching, web/email search, pattern derivation) were moved into Python helper scripts. Other requirements included validating the results through versioned blind runs against a reference, iterative refinement of the rule set, and a swappable search provider layer for cost and stability reasons.
Various small projects – further development, optimization & maintenance
As part of several small projects, existing online calculators, forms, and related application parts were further developed, optimized, and maintained. The technologies used were JavaScript, TypeScript, and CSS on the client side, and .NET with C# and XML on the server side. My tasks included both frontend and backend development combined with consulting work. Among other things, I was responsible for additional BFSG adjustments to forms and online calculators, replacing the existing Chart.js library with Apache ECharts, and improving tracking. Other requirements included migrating the existing JavaScript framework to TypeScript, general bug fixing and maintenance, and carrying out a proof of concept for AI-supported form creation.
Developer, Consultant
As part of a project, several existing online calculators and forms were converted to BFSG-compliant accessibility. The technologies used were JavaScript and CSS on the client side, and .NET with C# and XML on the server side. My tasks included both frontend and backend development combined with consulting work. I was mainly responsible for adapting the UI components and for ensuring full screen reader compatibility. Other requirements included mobile optimizations (responsive design), code stabilization, refactoring, and bug fixing.
Developer
As part of an in-house development project, a server-side Node.js application was created for the automated detection and evaluation of new freelance project offers.
The application runs on its own Linux server (cPanel) and checks several platforms such as XING, Freelancermap, Freelance.de, and LinkedIn daily for new projects.
It works cookie-based, uses HTML scraping, and stores the data in a SQLite database.
Optionally, it sends email notifications for relevant matches.
Technical challenges: session handling without Puppeteer, HTML data extraction with Cheerio, processing non-standardized data sources, filtering, deduplication, and categorization of results.
Developer, Consultant
Further development of an application for creating offers for customers in medical technology.
Frontend with Angular 14/19 and TypeScript, backend with .NET Core 8.0 and C#, Power Automate/Power Apps flows.
Responsible for Word generation using Open XML, PDF conversion, the complete approval process, flow adjustments, and creating the offer in Dynamics CRM.
Additional tasks: upgrading Angular to version 19, introducing multilingual support, mobile optimizations (responsive design), code stabilization, refactoring, and performance optimization.
Developer, Consultant
Migration of the frontend of an e-health and telematics infrastructure application to the latest Angular version.
Complete redevelopment from version 7 to 16 with Angular Material 16, TypeScript, and Tailwind CSS.
Removal of NgRx state management and custom components, integration of our own UI framework for reusability.
Tasks: developing UI components, extending and adapting the UI framework, migrating old pages and functions, adapting the backend, improving performance, and coaching developers.
Developer, Consultant
Further development of an e-health and telematics infrastructure application.
Client with Angular 7 and TypeScript, server with ASP.NET and C# including SQL database.
Responsible for stability and performance, bug fixing, and developing new features.
Developer, Consultant
Development of an application for creating quotes in medical technology.
Interface for data entry including approval process, connection to Power CRM, SAP, SQL, and SharePoint, creation of the quote in Word and PDF.
Frontend with Angular 13 and TypeScript, backend with .NET Core 6.0 and C#.
Responsible for UI implementation, data management, and Word generation using Open XML.
Additional requirements: code stabilization, refactoring, and performance optimization.
Developer, Consultant
Further development of a booking system for demo events in the lab.
Client with AngularJS and TypeScript, server with ASP.NET MVC and C#.
Responsible for connecting mobile labs and UK Lab, preparing the application for migration to Angular 13.
Developer, Consultant, IT Architect
Development of smart bus replacement transport with incident management, company and vehicle maintenance, and vehicle dispatch systems.
Client side with Nx.dev, Angular 11, and TypeScript.
Tasks as lead developer: setting up the UI architecture, developing UI components, coaching developers, code stabilization, and refactoring.
Developer, Consultant
Migration from Project Server 2010 to Project Online.
Use of VBA, C# and SharePoint CSOM.
Tasks: developing the scripts, carrying out the migration and quality assurance.
Developer, Consultant
Development of a SAPUI5/Fiori-based system for document exchange in the industry.
Subproject for exchanging documents/data between the client and suppliers with three web applications.
UI development, coaching and consulting, responsibility for code quality through reviews and refactoring.
Developer, Consultant
Further development of a booking system for demo events in the lab.
Client with AngularJS 1.6 and TypeScript, server with ASP.NET MVC and C#.
Tasks: developing new features, connecting new target group users, UI adjustments, Azure integration, interface adjustments, code stabilization, refactoring and performance optimization.
Developer, Consultant
Further development of a SAPUI5/Fiori-based customer portal for an existing SAP ERP/CRM system.
Provision of SAP transactions in the browser (responsive), ordering services with status tracking, document exchange and dashboard visualization.
UI development, coaching internal developers, consulting and development of a complex custom control.
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Healthcare, Professional Services, Biotechnology, and Manufacturing.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Operations, and Quality Assurance.
Summary
As a senior full-stack developer with a focus on TypeScript, Angular, and C#, I build performant, scalable applications for modern web and enterprise solutions. In addition to new development, I optimize existing systems for long-term maintainability and flexibility. I advise on software architecture, technology selection, and best practices to align projects strategically. My focus is on modular, sustainable, and individually adaptable solutions for complex requirements. Increasingly, I integrate AI-supported methods into development processes and applications — from AI-assisted software development and automation to LLM-based solutions. With analytical thinking and a quick grasp of new topics, I get up to speed with new technologies fast. I value a structured, solution-oriented way of working and clear, transparent communication to achieve economically sensible results.
Skills
Technical Focus**
Frontend: Javascript, Typescript, Angular, Rxjs, Bootstrap, Tailwind
Backend: C#, Asp.Net, .Net Core, Entity Framework
Cloud & Devops: Azure Devops, Ci/Cd
Roles**
Software Developer
It Architect
Consultant
Detailed Knowledge**
Agile Methods: Scrum, Xp, Ci/Cd
Architecture Patterns: Client-Server, Mvc, Mvvm, Microservices, Serverless Architecture
Frontend: Angularjs, Angular, Angular Material, Rxjs, Bootstrap, Tailwind, Sapui5/Fiori, Jquery, Electron, Ionic, Nx.Dev, Html, Css, Svg, Less, Sass, Xml, Progressive Web App (Pwa), Markdown
Backend: .Net, .Net Core, Asp.Net (Mvc, Razor), Entity Framework, Node.Js
Cloud & Devops: Azure (Services, Devops, Logic Apps), Aws
Data & Apis: Rest, Sql Server, Odata
Authentication & Security: Msal (Azure Ad), Oauth
Testing: Cypress, Jest, Mstest, Mocha, Chai
Microsoft & Business Solutions: Sharepoint, Power-Crm, Power Automate/Power Apps, Open Xml
Development Tools: Visual Studio, Vs Code, Rider, Webstorm
Version Control: Git, Github, Bitbucket
Project Management & Communication: Jira, Confluence
Api Testing & Debugging: Postman, Browser Devtools
Ai-Supported Development: Chatgpt, Github Copilot
Additional Knowledge**
Python, Docker, Kubernetes, Rabbitmq, Nedb (Mongodb), Postgresql, Mysql, Wordpress, Joomla, Php, Electron, Highcharts, Docxtemplater, D3.Js, Ag-Grid, Fullcalendar, Chart.Js, Sheetjs, Exceljs, Blazor, Java, Spring
Languages
Education
FH Munich
Diploma · Business Computer Science · Munich, Germany
LBB
Bank clerk (IHK) · Bank clerk · Berlin, Germany
Statistics
Experience
Expertise
Profile
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Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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