Hai D.-Principal System Architect & Tech Lead
Check rate
Experience
Principal System Architect & Tech Lead
IU International University of Applied Sciences
Leading architecture and delivery of AI-powered educational content platform, managing two development teams with full technical ownership.
Designed and architected the Content Hub platform replacing legacy SiteFusion systems, enabling professors to create AI-assisted learning materials for improved student outcomes.
Established technical strategy, defined architecture requirements, and aligned two cross-functional teams (AI Media Team, TEAQ Team) on a unified delivery roadmap.
Implemented Clean Architecture principles and AI-agent-friendly documentation standards across the engineering organization.
Drove adoption of modern development workflows including CI/CD automation and MongoDB-based content management solutions.
Senior Cloud/DevOps Architect
Pexon Consulting GmbH
Led cloud architecture and DevOps transformation for enterprise clients in the IT sector.
Architected a central Azure Data Lake repository for multi-source data synchronization with high availability and automated release processes.
Designed and implemented a cloud migration strategy for on-premise applications to Azure PaaS, achieving significant cost reduction and improved scalability.
Established Infrastructure as Code practices using Terraform and Ansible for automated provisioning across development, staging, and production environments.
Introduced GitFlow and comprehensive CI/CD pipelines enabling faster, quality-assured releases.
Full Stack Engineer
Avenga
Developed distributed systems and blockchain-based solutions for automotive and enterprise clients.
Built a blockchain-based used car trading prototype for Daimler using Ethereum smart contracts and a Vue.js frontend.
Developed Node.js microservices with a React frontend for an enterprise booking platform and implemented GitLab CI/CD for automated deployments to Azure.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Automotive, and Education.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Strategy, Operations, and Quality Assurance.
Summary
Principal System Architect with 8+ years of experience in designing and delivering enterprise-grade cloud solutions. Proven track record in leading cross-functional teams, driving technical strategy, and modernizing legacy systems. Deep expertise in Azure cloud infrastructure, distributed systems, and AI-enabled platforms. Currently leading digital transformation initiatives in the education sector.
Skills
Architecture & Leadership: System Design, Technical Strategy, Cross-Team Alignment, Delivery Management, Stakeholder Communication
Cloud & Infrastructure: Azure (Expert), Kubernetes, Docker, Terraform, Ansible, Ci/Cd Pipelines
Development: Python, Node.Js, Typescript, React, Angular, Mongodb, Postgresql
Methodologies: Clean Architecture, Domain-Driven Design, Agile, Devops
Languages
Education
Technische Universitat Berlin
Bachelor of Engineering, Mechanical Engineering · Industrial Engineering · Berlin, Germany
Technische Universitat Berlin
Master of Science, Distributed Systems · Business Informatics · Berlin, Germany
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Hai is based in Berlin, Germany.
Hai speaks the following languages: English (Advanced), Vietnamese (Advanced), German (Intermediate).
Hai has at least 10 years of experience. During this time, Hai has worked in at least 3 different roles and for 3 different companies. The average length of individual experience is 3 years and 3 months. Note that Hai may not have shared all experience and actually has more experience.
Based on recent experience, Hai would be well-suited for roles such as: Principal System Architect & Tech Lead, Senior Cloud/DevOps Architect, Full Stack Engineer.
Hai's most recent position is Principal System Architect & Tech Lead at IU International University of Applied Sciences.
In recent years, Hai has worked for IU International University of Applied Sciences, Pexon Consulting GmbH, and Avenga.
Hai is most experienced in industries like Information Technology, Automotive, and Education.
Hai is most experienced in business areas like Information Technology, Product Development, and Strategy. Hai also has some experience in Operations and Quality Assurance.
Hai has recently worked in industries like Information Technology, Automotive, and Education.
Hai has recently worked in business areas like Information Technology, Product Development, and Strategy.
Hai holds a Master in Business Informatics from Technische Universitat Berlin and a Bachelor in Industrial Engineering from Technische Universitat Berlin.
Hai has 1 certificate: Azure Expert Solution Architect.
The availability of Hai 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 7 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
Tungi D.
Matthias K.
Paul W.
Marc H.
Jürgen F.
Michael K.
Olaf T.
Kenan Š.
Marcel M.
Jens R.
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Principal System Architect & Tech Lead
Alex I.
Rüdiger S.
Viktor S.
David K.
Tezcan D.
Kai S.
Prasad T.
Arne H.
Niko S.
Christoph T.
Nearby freelancers
Professionals working in or nearby Berlin, Germany
Stefan O.
Sascha B.
Dmitry P.
Chris W.
Björn S.
Nune I.
Mladen B.
Andreas R.
Erik W.
Silvia B.
