Tomas Stiller-Co-Founder & CTO
Check rate
Experience
Co-Founder & CTO
Printkiss GmbH & Co. KG
- Agile app development and product ownership in e-commerce
- Feature planning and creating user stories
- Organizing external freelancers (cross-functional teams)
- Backend and frontend development
- Story mapping
- Backlog management
- Roadmap planning
- Budget control and capacity planning
Co-Founder & CTO
Wunderkarten GmbH
- Designing and operating a scalable AWS infrastructure (EC2, ALB, RDS, S3, EFS, IAM, CloudFront)
- Developing a custom PHP-based e-commerce system including a real-time card designer (Vanilla JavaScript)
- Building and leading an 11-person development team using agile methods
- Introducing DevOps automation (Jenkins, CI/CD pipelines) and improving deployment reliability
- Responsible for SEO strategy and website performance optimization
Founder & Consultant
Stillforward GmbH
Building and operating a Kubernetes-based internal developer platform for over 25 AWS EKS clusters
Developing Crossplane compositions and composition functions in Golang
Managing secure rollouts of new Kubernetes APIs with release coordination and a testing strategy
Implementing secure RBAC models and policy enforcement with Gatekeeper and Rego
Providing second-level support and platform tooling for internal teams
Conducting knowledge-sharing sessions (e.g., SIG moderation, platform onboarding)
Developing an AI infrastructure prototype with LangChain, Flowise, Terraform, and AWS EKS
Implementing retrieval-augmented generation (RAG) pipelines with private LLMs and vector databases
Completed a professional course in AI agent design and orchestration (LangChain & LLMs, 2025)
Conducting internal workshops and knowledge transfers on AI tooling and architectural fundamentals
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology and Retail.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Research and Development, Project Management, and Marketing.
Summary
Over 15 years of experience building scalable cloud platforms and leading tech-driven companies. As a founder and consultant, I helped businesses modernize their infrastructure, establish a DevOps culture, and integrate AI-powered solutions. Successes with AWS, Kubernetes, Golang, and AI agent platforms across transport, e-commerce, and platform engineering.
I specialize in building AI-driven systems that deliver real value. From custom LLM workflows and agent infrastructures to retrieval-based architectures, I turn AI from a buzzword into working solutions. My strength lies in combining deep cloud expertise (AWS, Kubernetes, Golang) with hands-on AI implementation to create scalable, intelligent platforms. I also design, develop, and operate these platforms while sharing my knowledge about them.
Skills
- Ai Platforms & Tools: Flowise, Langchain, Hugging Face, Ollama, Openai
- Cloud: Aws (Eks, Ec2, S3, Iam, Route53, Rds, Cloudfront)
- Kubernetes & Gitops: Argocd, Helm, Karpenter, Crossplane
- Iac & Devops: Gitlab Ci/Cd, Docker, Terraform, Linux
- Programming: Golang, Typescript, Python, Php
- Ai Infrastructure Engineering
- Developer Enablement & Ai Onboarding Workshops
- Retrieval-Augmented Generation
- Lean Ai Prototyping & Mvp Development
- Technical Leadership Of Platform Projects
- Integration Of Ai Agents Into Cloud-Native Applications
- Ux-Centered Ai Tools & Prompt Design
- Lean Ux & Ux Research
- Startup Execution & Product-Market Fit For Ai Tools
- Cloud-Native Architecture With Aws, Kubernetes & Golang
- Platform Engineering With Gitops & Crossplane
- Secure Api Design With Rbac, Gatekeeper, Rego Policies
- Fullstack Web Development: React, Angular, Typescript, Html/Css
- Strategic Thinking With A Strong Sense For Ai Systems
- Practical Leadership With An Engineering-First Mindset
- Clear, Technical Communication Across Disciplines
- Problem Solving Through Experimentation And Iterative Approaches
- Driven By Curiosity, Autonomy, And The Desire For Tangible Impact
Languages
Education
Karlsruhe Institute of Technology (KIT), University of Karlsruhe (TH)
Diploma in Computer Science · Computer Science · Karlsruhe, Germany
Certifications & licenses
AI Agents: LangChain & LLM Apps
AI For Everyone
Coursera
ArgoCD Essentials
Udemy
Node JS - The Complete Guide
Udemy
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Tomas is based in Landshut, Germany and can operate in on-site, hybrid, and remote work models.
Tomas speaks the following languages: English (Advanced), French (Advanced), German (Intermediate).
Tomas has at least 11 years of experience. During this time, Tomas has worked in at least 2 different roles and for 3 different companies. The average length of individual experience is 4 years and 7 months. Note that Tomas may not have shared all experience and actually has more experience.
Based on recent experience, Tomas would be well-suited for roles such as: Co-Founder & CTO, Founder & Consultant.
Tomas's most recent position is Co-Founder & CTO at Printkiss GmbH & Co. KG.
In recent years, Tomas has worked for Printkiss GmbH & Co. KG, Wunderkarten GmbH, and Stillforward GmbH.
Tomas is most experienced in industries like Information Technology and Retail.
Tomas is most experienced in business areas like Information Technology, Product Development, and Research and Development. Tomas also has some experience in Project Management and Marketing.
Tomas has recently worked in industries like Information Technology and Retail.
Tomas has recently worked in business areas like Information Technology, Product Development, and Research and Development.
Tomas attended Karlsruhe Institute of Technology (KIT), University of Karlsruhe (TH) for Computer Science.
Tomas has 6 certificates. Among them, these include: AI Agents: LangChain & LLM Apps, AI For Everyone, and MS Certified: Azure AI Fundamentals.
The availability of Tomas needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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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 6 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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