Hans R.-Engineering and Leadership Consultant
Check rate
Experience
Founder
N+One
Building an AI-native coaching platform for cyclists: a conversational Dynamic Coach that turns training and recovery data into the next session decision, available daily instead of a static calendar.
Designed and shipped a full-stack, chat-first coaching experience on Next.js and the Vercel Edge Network, with agentic workflows that adapt plans in real time to readiness, load, and life constraints.
Built integrations with Garmin, Strava, Whoop, and intervals.icu so sleep, HRV, and ride data feed coaching recommendations without manual data entry.
Product thesis: make high-quality coaching principles accessible at scale by combining adaptive training logic with plain-language conversation, not another metrics dashboard.
AI-Native Systems Architect & Engineering Advisor
Self-employed
Helping engineering organizations transition from legacy architectures to AI-native products. I don't just consult; I bridge the gap between high-scale architecture and the agentic future.
AI & Machine Learning: Hands-on architecture and implementation using Vercel AI SDK, Next.js, Supabase, and Serverless architectures to build production-ready AI applications.
Reference Architecture: Designed and implemented a full-stack, conversational coach (N+One) based on Next.js and Vercel Edge Network for personalized training, demonstrating expertise in performant serverless applications and AI-powered experiences.
Agentic Systems & Data Processing: Developed agentic-led, low-code crawling and indexing processes for fiber internet network information, showcasing proficiency in automation, LLM integration, and data structuring.
Fractional CTO
Fiberfone GmbH
Led technical strategy and a 23M+ data point infrastructure for automated location-based order management.
Built agentic AI crawling and indexing with Vercel AI SDK and Next.js; launched the comparison portal checkout with external partners.
Vice President Engineering
Seven.One Entertainment Group GmbH / ProSiebenSat.1
As Vice President Engineering, I was responsible for the strategic development and maintenance of the customer facing applications of the multi-tenant Streaming Platform Joyn, serving 11 million monthly active users.
Led six distributed engineering teams (55 individuals) including Engineering Managers and Staff Engineers, reporting to the CTO. Established a collaborative, innovation-friendly, and agile culture.
Directed engineering vision and budget planning. Led change management and transformation during the Joyn and ProSiebenSat.1 merger.
Created standardized reference architectures and deployment playbooks for multi-tenant platform, accelerating tenant rollouts and ensuring cross-platform consistency.
Established data-driven decision-making with product-led metrics, resulting in ~4% increase in user engagement and 20% reduction in technical debt. Utilized DORA metrics and Core Web Vitals.
Successfully introduced AI engineering practices by piloting GitHub Copilot, enhancing developer productivity and code quality.
Director Technology & Product, FYEO
Seven.One Entertainment Group GmbH / ProSiebenSat.1
As Director of Technology & Product, I led the development and maintenance of FYEO, a podcasting app with over 1.6 million formats and 40 million episodes.
Built and led an agile, cross-functional team of 13 members, overseeing career development and recruitment.
Led transformation by replacing external agency with internal development and design personnel, demonstrating change management capabilities.
Developed and aligned business strategy with business owners and management, reporting to the CTO.
Implemented engineering and product vision, executed product roadmap, and established data-driven planning processes.
Significantly increased KPIs including retention, reach, and technical stability, improving audience engagement.
Lead Software Engineer and Software Architect
AXA Deutschland
Led the development and growth of an engineering team responsible for building online insurance tariff calculators for AXA Deutschland in a strongly regulated environment.
Developed services using Node.js and Java for the backend, utilizing a microservice architecture.
Guided cross-functional teams on adopting modern, type-safe application architecture (React/TypeScript) to accelerate time-to-market, increasing annual application delivery velocity from 2 to 6.
Architected and deployed the applications in a custom Cloud environment based on Kubernetes and Docker, utilizing cloud-native best practices and automation tools like Terraform and Jenkins.
Expanded the team from four to 14 developers by leading cross-functional teams, fostering an agile work environment.
Software Engineer
REWE digital
- Contributed to the development of platform services enhancing the web experience of REWE's online presence and shop
- Built microservices with Node.js, transforming the backend from on-premise to cloud-native on Google Cloud Platform using Kubernetes and Docker
- Implemented Apache Kafka for efficient data streaming and real-time data processing
- Employed React.js for the front-end with a micro-frontend architecture
- Developed internal services that streamlined workflows for engineers
Engineering Manager and Software Architect
Fashionette
Spearheaded the transformation of the monolithic e-commerce platform to a scalable microservice architecture.
Led the relaunch of the e-commerce platform which resulted in market rollouts across Europe, UK and US.
Established a robust foundation for the company's future growth based on microservice architecture.
Employed PHP for backend development, leveraging cloud-based services to enhance scalability.
Expanded the team to 14 software engineers fostering an agile work environment.
Front-end Architect
Vaillant Group
Played a pivotal role in shaping the online presence for Vaillant Group and its subsidiaries as a front-end architect.
Collaborated with ten front-end developers to build the company's online presence.
Contributed to the expansion of a team from seven to 40 members operating in a Scrum environment.
Instrumental in establishing a scalable, reusable front-end environment.
Pioneered an agile transformation within Vaillant Group.
Software Architect & Engineer, Engineering Manager
Self-employed
- Worked on projects for clients such as AXA, REWE digital, Vaillant Group Business Services and Fashionette
- Served as Software Architect, Engineer, Scrum Master and Engineering Manager working on new and existing software architectures
Lead Front-end Developer
/gebrüderheitz
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Insurance, Retail, Media and Entertainment, Telecommunication, and Manufacturing.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Project Management, Strategy, and Human Resources.
Summary
AI-Native Systems Architect & Engineering Advisor with 15+ years of experience building high-scale platforms (11M+ MAU). I help engineering organisations transition from legacy architectures to production-ready AI products, and advise on technical strategy at scale. Hands-on with agentic engineering, cloud-native systems, and modern web stacks; proven at defining engineering vision, leading transformation, and turning complex architectures into business value. As a consultant, coach, and co-host of the Working Draft Podcast, I synthesise technical depth into clear, actionable guidance.
Skills
Ai-Native Systems Architecture, Agentic Engineering, And Engineering Leadership. I Help Teams Move From Legacy Architectures To Production-Ready Ai Products, And Advise On Technical Strategy At Scale.
Specialisations: Next.Js, Typescript, React, Vercel Ai Sdk, Serverless/Edge Architectures, Supabase, Rag Pipelines, Mcp, Llm Integrations, And Agentic Workflows Across The Sdlc. Strong Background In Cloud-Native Platforms, Microservices, And High-Scale Product Engineering (11m+ Mau).
What Sets Me Apart: I Bridge Hands-On Ai Implementation With Senior Engineering Leadership. Former Vp Engineering At Prosiebensat.1 (Joyn), Fractional Cto, Founder Of N+One, And Coach At Digitale Leute School. I Don’T Stop At Prototypes: I Design Reliable, Guardrailed Ai Systems And Help Organisations Adopt Them Sustainably.
Languages
Certifications & licenses
Leadership Education Program
WHU – Otto Beisheim School of Management, Executive Education
Scrum Alliance
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Hans is based in Cologne, Germany and can operate in on-site, hybrid, and remote work models.
Hans speaks the following languages: German (Native), English (Advanced).
Hans has at least 16 years of experience. During this time, Hans has worked in at least 11 different roles and for 9 different companies. The average length of individual experience is 2 years and 6 months. Note that Hans may not have shared all experience and actually has more experience.
Based on recent experience, Hans would be well-suited for roles such as: Founder, AI-Native Systems Architect & Engineering Advisor, Fractional CTO.
Hans's most recent position is Founder at N+One.
In recent years, Hans has worked for N+One, Self-employed, Fiberfone GmbH, and Seven.One Entertainment Group GmbH / ProSiebenSat.1.
Hans is most experienced in industries like Information Technology, Insurance, and Retail. Hans also has some experience in Media and Entertainment, Telecommunication, and Manufacturing.
Hans is most experienced in business areas like Information Technology, Product Development, and Project Management. Hans also has some experience in Strategy and Human Resources.
Hans has recently worked in industries like Information Technology, Media and Entertainment, and Telecommunication.
Hans has recently worked in business areas like Information Technology, Product Development, and Strategy.
Hans has 2 certificates. These include: Leadership Education Program and Certified Scrum Master.
Hans is immediately available part-time for suitable projects.
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Calculated based on our freelancers’ daily rates as of 14 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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