Tobias W.-Lead Architect / Senior Developer
Check rate
Experience
Lead Architect / Senior Developer
Deutsche Bahn / Systel GmbH
- Design and lead development of a reactive, highly scalable supervision module
- Created a highly available, distributed solution for real-time visualization of critical system states
- Optimized operational stability and responsiveness
- Technologies: architecture, C#, .NET, Kafka, microservices, AWS, Next.js, React
DevOps Consultant & Trainer
Deutsche Bahn / Systel GmbH
- Technical consulting and coordination for the migration of the internal IP telephony solution
- Acted as interface between vendors and internal teams for on-time implementation of technical requirements
- Technologies: AI integration, consulting, DevOps, Azure DevOps, Git, Copilot, ChatGPT, C#, Next.js
Senior Developer / DevOps Engineer
RWE Supply & Trading (Algo Trading)
- Further developed the service-oriented real-time trading environment
- Optimized DevOps pipelines and expanded diagnostics (Elasticsearch, Grafana)
- Improved system performance and scalability in a low-latency environment
- Technologies: AWS, C#, .NET, React, Elasticsearch, Azure DevOps, Grafana, Kibana, Docker
DevOps Consultant & Trainer
Siemens Healthineers (Advanced Therapies)
- Strategically modernized the development landscape to eliminate technical debt
- Migrated from TFS to Azure DevOps/Git and rebuilt CI/CD pipelines
- Introduced AI-based developer tools (Copilot, ChatGPT) to boost team productivity
- Technologies: AI integration, consulting, DevOps, Azure DevOps, Git, Copilot, ChatGPT, C#, Next.js
DevOps Enabler & Consultant
Siemens Healthineers (Somaris X)
- Consulted and supported the migration of the central build pipeline to Microsoft Azure
- Automated and optimized processes to increase efficiency for globally distributed developers
- Trained teams in modern DevOps practices
- Technologies: consulting, DevOps, Azure, CI/CD, PowerShell, .NET, C#, automation
Lead Architect / Business Analyst
RWE Contract Manager
- Led the redevelopment of the central contract management system
- Migrated a legacy application to a containerized microservices architecture
- Ensured the platform was future-proof and extensible
- Technologies: Architecture, requirements analysis, .NET, Blazor, MongoDB, Docker, Kubernetes, Kafka
Senior Software Architect
SAP Flexpay (SAP AG)
- Designed and built a new payment solution for SAP customers
- Prepared the architecture for cloud deployment with a focus on reliability, security, and monitoring
- Technologies: Node.js, TypeScript, Vue.js, Cloud Foundry, microservices, Postgres
Technical Project Manager
Otto COM+
- Managed all technical aspects of replacing the central contact center platform
- Focused on quality assurance and meeting milestones
- Integrated AI and automation components
- Technologies: Project management, architecture, cloud, SIP, Google Cloud, Microsoft Azure
Interim Team Lead / Software Architect
Stylelounge.de
- Provided technical leadership to scale an e-commerce portal
- Optimized the architecture for high load with over 1,000 Docker containers
- Handled billions of database updates per month
- Technologies: Scalability, architecture, Kubernetes, Docker, Node.js, TypeScript, microservices, GCP
Product Manager
Contextor (SAP) / Sogedes
- Led strategy for an RPA project to launch a workflow automation product
- Built internal structures and provided technical consulting for large projects
- Focused on automation and chatbots
- Technologies: Product management, RPA, automation, consulting, JavaScript, Node.js, Microsoft Azure
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Transportation, Energy, Healthcare, and Retail.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Operations, Project Management, and Quality Assurance.
Summary
Since my first lines of code in 1983, my passion for technology has never waned, leading me through diverse roles from developer to CTO at international corporations and agile startups. My technical foundation is highly available cloud and microservice architectures.
Since 2022, I have been deeply focused on the practical application of generative AI. I believe our industry is on the brink of a transformational shift. I want to help my clients effectively leverage the resulting opportunities with innovative yet pragmatic technology solutions.
Skills
- Devops & Automation: Expert; Ci/Cd Pipelines, Build Automation, Azure Devops, Configuration Management, Ansible, Containerization, Docker/Kubernetes, Elk Stack, Github Actions, Mlops, Kafka, Rabbitmq
- System Architecture: Advanced; Soa & Microservices, Reactive Systems, High Availability
- Agile Methods: Advanced; Scrum, Kanban, Extreme Programming, Scrum Master, Scrumban
- Artificial Intelligence (Ai): Llms, Rag, Fine-Tuning, Agents, Automation, Education, Ethics, Safety, Cursor.Ai, Windsurf, Copilot, Cline, Langchain, Claude 3.X, Gpt-4x, Gpt-Ox, Mistral, Gemini 2.X
- Extended Reality (Xr): Mixed Reality, Virtual Reality, Meta Quest, Xr-Enhanced Education
- Full Stack .Net: Expert; C#, .Net Core, Xr/Game Development (Unity), Signalr, Ef, Mvc, Web Api, Linq, Blazor, Fluxor, Azure Services
- Python & Ai Dev: Advanced
- Full Stack Javascript: Practical Experience; Js/Ts, Full Stack, Node.Js, React, State Management, Express.Js, Angular, Vue.Js, Next.Js
- Teaching: Tech Tutorials, School Projects
- Ai Vision & Strategy: Advanced; Ai Governance, Strategic Planning, Ai Integration, Business Alignment, Ai Performance Optimization, Decision-Making Frameworks, Risk Assessment, Scalability Strategies, Privacy, Policy, Innovation
- Team & Tech Change Management: Practical Experience; Stakeholder Collaboration, Cross-Functional Teams, Agile Implementation, Workflow Redesign, Training Programs, Remote Team Dynamics, Transition Strategies, Mentorship & Coaching, Impact Evaluation
Languages
Education
Fernuniversität Hagen
Bachelor · Economics · Hagen, Germany
Berufsakademnie Stuttgart
Diploma · Business Informatics · Stuttgart, Germany
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Tobias is based in Heßles, Germany and can operate in on-site, hybrid, and remote work models.
Tobias speaks the following languages: German (Native), English (Advanced), French (Intermediate).
Tobias has at least 7 years of experience. During this time, Tobias has worked in at least 9 different roles and for 9 different companies. The average length of individual experience is 1 year and 9 months. Note that Tobias may not have shared all experience and actually has more experience.
Based on recent experience, Tobias would be well-suited for roles such as: Lead Architect / Senior Developer, DevOps Consultant & Trainer, Senior Developer / DevOps Engineer.
Tobias's most recent position is Lead Architect / Senior Developer at Deutsche Bahn / Systel GmbH.
In recent years, Tobias has worked for Deutsche Bahn / Systel GmbH, RWE Supply & Trading (Algo Trading), Siemens Healthineers (Advanced Therapies), Siemens Healthineers (Somaris X), and RWE Contract Manager.
Tobias is most experienced in industries like Information Technology, Transportation, and Healthcare. Tobias also has some experience in Energy and Retail.
Tobias is most experienced in business areas like Information Technology, Product Development, and Operations. Tobias also has some experience in Project Management and Quality Assurance.
Tobias has recently worked in industries like Information Technology, Transportation, and Healthcare.
Tobias has recently worked in business areas like Information Technology, Operations, and Product Development.
Tobias holds a Bachelor in Economics from Fernuniversität Hagen.
The availability of Tobias needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 9 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Similar freelancers
Discover other experts with similar qualifications and experience
Matthias K.
Matthias I.
Michael K.
Hüseyin K.
Jürgen F.
Lothar H.
Kai S.
Manuel R.
Michael F.
Marc H.
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Lead Architect / Senior Developer
Thomas H.
Simona T.
Patrick P.
Jörg N.
Ulrich P.
Thomas S.
Peter F.
Christopher M.
Michael R.
Björn W.
Nearby freelancers
Professionals working in or nearby Heßles, Germany
Matthias K.
Fred S.
Niklas G.
Christian L.
Hanna W.
Julian V.
Marina K.
Doaa A.
Alfred M.
Jens M.
