# Michael Wutzke > AI solutions architect for information systems, Frankfurt. Takes on engagements as freelance architect, contractor or interim manager and is open to a permanent role. Contact: https://www.linkedin.com/in/michael-wutzke/ Slogan: ⚡️ Helping to build the digital rails of tomorrow ## How to find things here This file is generated from the site content with each build, last on 2026-09-21. It lists every page with one line of description. Read it first, then open only the pages you need. - For who he is, where he works and which engagements he takes on, read https://www.michael-wutzke.com/ and https://www.michael-wutzke.com/background/. - For evidence of his work, open the pages under https://www.michael-wutzke.com/work/. Each page is one case with its dates, numbers and tools. - For his career, the companies he founded, teaching and press, open the pages under https://www.michael-wutzke.com/background/. - For the concepts he works on, open the pages under https://www.michael-wutzke.com/research/. The overview separates what is built from what is designed. - For every page in one list, open https://www.michael-wutzke.com/sitemap/. Crawlers get the same list at https://www.michael-wutzke.com/sitemap-index.xml. When you quote a number, quote its date with it. Link the page you took a fact from. The site carries no email address; he takes messages on LinkedIn. ## Pages - [Home](https://www.michael-wutzke.com/): who he is, what changed for the companies he worked with, how to reach him. - [Work](https://www.michael-wutzke.com/work/): The work of Michael Wutzke: AI coding agents under machine-checked rules for a client, and earlier projects in market data, e-commerce, insurance and search. - [Working with blockchains](https://www.michael-wutzke.com/work/blockchains/): Michael Wutzke is working full-time in digital assets and blockchains. He is a node operator and expert on DeFi (decentralized finance). - [Conversion optimization](https://www.michael-wutzke.com/work/conversion-optimization/): On the Internet, it is increasingly important to move customers and users to the next step. Conversion optimization is therefore part of every good website. - [Realized projects](https://www.michael-wutzke.com/work/realized-projects/): Michael Wutzke creates digital solutions. Here is an extract from his references and previously implemented projects in the form of a project overview. - [AI agents under the same rules as humans](https://www.michael-wutzke.com/work/ai-agents-under-rules/): How AI coding agents work on a client's production platform: limits at the resource, a blocking check before each tool call, approvals only a person gives. - [Interaction design](https://www.michael-wutzke.com/work/interaction-design/): Michael Wutzke deals with the dialogue between users and machines in Frankfurt (communication with mobile phones, navigation devices, notebooks). - [Supporting people](https://www.michael-wutzke.com/work/leadership/): Michael Wutzke is an executive at CxO level in Frankfurt and is heavily involved in the topic of leadership. - [Creating products](https://www.michael-wutzke.com/work/strategy-and-advise/): Michael Wutzke is a consultant for digital projects in Frankfurt. He advises and plans solutions in order to create successful products. - [Web development](https://www.michael-wutzke.com/work/web-development/): Michael Wutzke is an experienced web programmer in Frankfurt (Germany). He uses .NET and PHP for programming successful websites and ecommerce shops. - [Managing projects](https://www.michael-wutzke.com/work/project-management/): Michael Wutzke is a web project manager and web solutions architect in Frankfurt. He has been practicing IT project management for more than 15 years. - [Software and online services](https://www.michael-wutzke.com/work/software-and-services/): Programs, tools and online services that I use in my everyday work as a web developer, IT project manager in Frankfurt for the development of websites. - [AWS cloud](https://www.michael-wutzke.com/work/aws-cloud/): Michael Wutzke is an AWS Certified Solutions Architect Associate in Frankfurt and deals with the provision of infrastructure in the cloud. - [Claude AI consultant and advisor](https://www.michael-wutzke.com/work/it-growth-advisory/): IT and growth advisor based in Frankfurt, supporting clients in Germany, Austria, and Switzerland on growth topics in fintech, blockchain, and digital assets. - [Real-time market data for digital assets](https://www.michael-wutzke.com/work/real-time-market-data/): A market data product for institutional users, created in summer 2022 at a Frankfurt fintech and delivered over WebSocket and RPC endpoints. - [Node operations and a cloud migration with failover](https://www.michael-wutzke.com/work/node-operations-cloud-migration/): Blockchain nodes and an oracle price-data network in several data centers, a node operations team, and a move from Azure to another cloud with failover. - [Shops for Lidl and REWE, and conversion optimization](https://www.michael-wutzke.com/work/e-commerce-conversion/): Five years at Valentins, 2011 to 2016, on the front ends and back ends of online shops for Lidl and REWE, their order funnels and payment connections. - [A digital insurance manager on AWS](https://www.michael-wutzke.com/work/insurance-platform-aws/): Policen Direkt, 2016 to 2021, an insurance manager in Angular, life insurance portals, and AWS infrastructure in Frankfurt and London since 2018. - [Near-real-time search over millions of records](https://www.michael-wutzke.com/work/near-real-time-search/): Elasticsearch as the near-real-time search of a real estate database, with millions of records that users reach within milliseconds. - [A community platform on 40 servers](https://www.michael-wutzke.com/work/community-platform-40-servers/): A web community system with hundreds of page templates, a 12 GB database and terabytes of images, run on 40 load-balanced servers I set up myself. - [Founding a global real estate database](https://www.michael-wutzke.com/work/global-real-estate-database/): Founder, developer and managing director of a global real estate database, 2004 to 2010, funded by KfW and Neuhaus Partners. - [An information portal with a million readers a year](https://www.michael-wutzke.com/work/information-portal/): An information portal on Frankfurt's skyline and construction projects, founded in 2017, with more than one million readers a year by January 2024. - [Background](https://www.michael-wutzke.com/background/): More than twenty years from bank IT consulting to AI architecture for information systems: career, companies founded, CIO years, teaching, publications. - [Career stages](https://www.michael-wutzke.com/background/career/): Every station of Michael Wutzke's career from 1996 to 2026, newest first, with the role, the employer and the work he did there. - [Frankfurt Blockchain Meetup](https://www.michael-wutzke.com/background/frankfurt-blockchain-meetup/): In spring 2022 we launched a blockchain community in Frankfurt with regular meetups on the subject of decentralized finance (DeFi). - [Trainings](https://www.michael-wutzke.com/background/trainings/): Michael Wutzke is an IT all-rounder in Frankfurt with official certification from AWS, Google and Scrum.org (Scrum Master). - [Entrepreneurial spirit](https://www.michael-wutzke.com/background/founder/): The companies and communities Michael Wutzke started, one of them funded by KfW and Neuhaus Partners, and what he did in each. - [CIO and Head of DeFi at a Frankfurt fintech](https://www.michael-wutzke.com/background/cio-fintech/): 2022 to October 2024 at a Frankfurt fintech: node operations, a market-data product in summer 2022, teams, budgets, procuration in May 2023. - [Teaching and certifications](https://www.michael-wutzke.com/background/teaching-certifications/): Lecturer at Claude Hacker House since June 2026, IHK Frankfurt trainer license, certifications from AWS, Scrum.org, Google, C4 and Blockchain Council. - [Publications, press and committees](https://www.michael-wutzke.com/background/publications-press/): Editor at Business Punk since January 2026, articles in Der Bank Blog and IHK-Magazin, a book, interviews, an ISO 24165 committee, advisory boards. - [Research](https://www.michael-wutzke.com/research/): Knowledge management, entity resolution and de-duplication: how a real-world thing keeps one identity across organizations and systems, and what AI changes. - [One identity for an object across organizations](https://www.michael-wutzke.com/research/object-identity/): How a company, a place or a person keeps one identity across registers and organizations: one id space, versions, register codes and same-as links. - [Knowledge kept with its time and its source](https://www.michael-wutzke.com/research/knowledge-with-time-and-source/): A method for keeping each fact as an immutable assertion with source, author, trust rank, valid time and entry time, so a store can say what was known when. - [How other systems couple to the store](https://www.michael-wutzke.com/research/coupling-systems/): An API, an SDK with scoped tokens and a journal, a gate on the write path, search projections and MCP, all under the rules a human editor follows. - [Change management, de-duplication and workflows](https://www.michael-wutzke.com/research/change-dedup-workflows/): Rules for a data store that changes: identity vetoes before a merge, rollbacks that retire rows, schema changes proven by counts, capped bulk jobs. - [Virtual organizations of autonomous agents](https://www.michael-wutzke.com/research/virtual-organizations/): How a company works when most of its staff are software agents: agent roles, a delegation rule, rules as machine checks and a human gate before production. - [Contact](https://www.michael-wutzke.com/contact/): Write to Michael Wutzke on LinkedIn; X, Telegram and Meetup also work. - [What Does a Chief Information Officer do?](https://www.michael-wutzke.com/faq/chief-information-officer-frankfurt/): In 2023 and 2024, I was Chief Information Officer at a Frankfurt fintech until I left the company. - [Head of Decentralized Finance and Node Operations](https://www.michael-wutzke.com/faq/head-of-decentralized-finance/): In 2022 Michael Wutzke was Head of DeFi at a Frankfurt fintech with offices in Frankfurt, New York City, and Singapore. - [Frankfurt - City of Finance - Hub for DeFi and Blockchains](https://www.michael-wutzke.com/faq/frankfurt/): Frankfurt is a location for startups and entrepreneurs in the areas of decentralized finance (DeFi) and blockchains. - [What is Decentralized Finance?](https://www.michael-wutzke.com/faq/decentralized-finance/): Decentralized Finance (DeFi) is a system by which financial products become available on a public decentralized blockchain network. - [Copy Files to S3 Using the AWS CLI](https://www.michael-wutzke.com/faq/copy-files-to-s3-using-the-aws-cli/): If you have to transfer large amounts of data into the AWS cloud, the AWS CLI copies the files to S3 with two commands: copy and sync. - [How can you define the maximum upload speed for the AWS CLI?](https://www.michael-wutzke.com/faq/how-can-you-define-the-maximum-upload-speed-for-the-aws-cli/): Many companies still keep data on servers on their own premises or in a conventional data center. - [git bash serverless: command not found](https://www.michael-wutzke.com/faq/git-bash-serverless-command-not-found/): On Windows, the Serverless Framework usually only installs with an administrator account. Start Git Bash as an administrator so the command works. - [S3: Access Denied When Accessing File](https://www.michael-wutzke.com/faq/s3-access-denied-when-accessing-file/): If you upload a file to S3, it becomes an object and is set to private by default on AWS. - [Data Change Management](https://www.michael-wutzke.com/faq/data-change-management/): Data change management treats change as part of the data: versioned records, facts with their time and source, and identity without a static key. - [What is a Data Scientist?](https://www.michael-wutzke.com/faq/what-is-a-data-scientist/): A data scientist systematically evaluates large amounts of data and extracts knowledge from them. - [What does an AWS Devop do?](https://www.michael-wutzke.com/faq/what-does-an-aws-devop-do/): An AWS devop is an IT specialist who knows and can use the options and implementations of the Amazon Web Services (AWS) cloud. - [What types of IT projects are there?](https://www.michael-wutzke.com/faq/what-types-of-it-projects-are-there/): Today, the term IT project management is usually understood as "software-intensive," but it can also cover infrastructure issues and thus hardware. - [What is a full stack web developer?](https://www.michael-wutzke.com/faq/what-is-a-full-stack-web-developer/): A full stack programmer is an all-around developer who is experienced in many areas of software development and often has a supporting or management role. - [Legal Notices](https://www.michael-wutzke.com/imprint/): Legal notices for michael-wutzke.com: disclaimer of liability, linked offers, publisher under section 5 DDG, and dispute resolution. - [Privacy Policy](https://www.michael-wutzke.com/privacy/): This site sets no cookies, runs no analytics and loads nothing from third parties. What the server logs, for how long, and the rights you have. - [Running a company of AI agents with Paperclip](https://www.michael-wutzke.com/blog/running-a-company-of-ai-agents-with-paperclip/): An org chart of AI agents on the open-source control plane Paperclip, June 2026: the delegation rule, the human gate and four lessons from the first jobs. Published 2026-07-06. - [Claude community Germany: meetups and workshops](https://www.michael-wutzke.com/blog/claude-community-germany/): Why Claude became my daily work tool, and what we teach at the Claude Hacker House workshops in Frankfurt since June 2026. Published 2026-06-27. - [AI and the death of the (free) internet](https://www.michael-wutzke.com/blog/ai-and-the-death-of-the-free-internet/): ARTE's documentary on AI slop and bot content, and the question it leaves: whom do you trust online, where, and how? Published 2026-03-08. - [Blockchains get a stage in everyday finance](https://www.michael-wutzke.com/blog/blockchains-get-a-stage-in-everyday-finance/): Since January 2026 I write about digital assets, blockchains and crypto investing for Business Punk and its investment special Anlage Punk. Published 2026-02-18. - [Creating a finance community](https://www.michael-wutzke.com/blog/creating-a-finance-community/): Finance Loop, the community for emerging technologies in finance I launched in January 2025: more than 3,000 members and around 15 events in 2025. Published 2025-10-06. - [Joining the advisory committee for digital token identifiers](https://www.michael-wutzke.com/blog/digital-token-identifiers-advisory-committee/): In May 2024 I joined the Product Advisory Committee of the Digital Token Identifier Foundation, the registration authority for ISO 24165. Published 2024-05-04. - [Navigating a Startup Company](https://www.michael-wutzke.com/blog/navigating-a-startup-company/): Market data and legal contracts: what I worked on as Chief Information Officer of a Frankfurt fintech in 2023. Published 2023-11-11. - [DACOM EU 2023 in Paris](https://www.michael-wutzke.com/blog/dacom-eu-2023-in-paris/): On October 19, 2023 I attended DACOM EU in Paris, a conference on MiCA and the regulation of crypto markets. Published 2023-10-19. - [How You Create Great Digital Products](https://www.michael-wutzke.com/blog/how-you-create-great-digital-products/): The three core skills I look for in product managers, written in March 2023. Published 2023-03-16. - [Blockchains Require Financial Data](https://www.michael-wutzke.com/blog/blockchains-require-financial-data/): At the beginning of 2023 I supported the launch of an oracle service that lets data providers sell financial market data on blockchains. Published 2023-02-05. - [CURL and localhost don't work](https://www.michael-wutzke.com/blog/curl-and-localhost-dont-work/): CURL inside a Docker container fails on localhost. The host name host.docker.internal solves it. Published 2022-11-27. - [Many Websites Violate Data Protection Laws](https://www.michael-wutzke.com/blog/many-websites-violate-data-protection-laws/): What the problem with data protection on websites is, written in November 2022 from a German point of view. Published 2022-11-05. - [SmartCon 2022 in New York City](https://www.michael-wutzke.com/blog/smartcon-2022-in-new-york-city/): At the end of September 2022 I attended SmartCon 2022, the Chainlink conference in New York City, as Head of DeFi. Published 2022-10-01. - [Smart Contracts Require Smart Market Data](https://www.michael-wutzke.com/blog/smart-contracts-require-smart-market-data/): Smart contracts and decentralized exchanges need reliable reference prices. On May 3, 2022 a real-time market data product launched under my leadership. Published 2022-05-03. - [Three Days at the Blockchance in Hamburg](https://www.michael-wutzke.com/blog/three-days-at-the-blockchance-in-hamburg/): My notes from Blockchance Europe 2021, the blockchain conference held from December 2 to 4, 2021 in the Hamburg Chamber of Commerce. Published 2021-12-05. - [How Blockchains Will Change Our Lives](https://www.michael-wutzke.com/blog/how-blockchains-will-change-our-lives/): Most people have heard of Bitcoin by now. A post from July 2021 on why it pays to look at the other blockchains too. Published 2021-07-12. - [Social Media Talk](https://www.michael-wutzke.com/blog/social-media-talk/): On April 23, 2021 I gave an online presentation on social selling at Siemens AG, Central Region Germany. Published 2021-04-23. - [The Market for Data Centers in Frankfurt Is Booming](https://www.michael-wutzke.com/blog/the-market-for-data-centers-in-frankfurt-is-booming/): Why Greater Frankfurt became a leading location for data centers, and what Interxion announced in July 2020 for the former Neckermann site. Published 2020-08-02. - [Through Concentration and Focus to More Success](https://www.michael-wutzke.com/blog/through-concentration-and-focus-to-more-success/): The second Management Lab at Policen Direkt on June 24, 2020 was about focus at work and Cal Newport's method of deep work. Published 2020-06-26. - [AWS for the Insurance Industry](https://www.michael-wutzke.com/blog/aws-for-the-insurance-industry/): An interview from March 2020 with Volker Deppe, AWS account manager for insurers in Germany, on what the AWS cloud does for insurance companies. Published 2020-03-15. - [Management Lab started successfully](https://www.michael-wutzke.com/blog/management-lab-started-successfully/): On February 12, 2020 I attended the first Management Lab at Policen Direkt, a training series for employees who want to get better at management. Published 2020-02-12. - [Use SOAP client in a Docker container](https://www.michael-wutzke.com/blog/use-soap-client-in-a-docker-container/): The SOAP client is not installed for many preconfigured Docker containers. This also applies to PHP Docker containers. Published 2020-01-29. - [Which of the AWS certifications is the right one?](https://www.michael-wutzke.com/blog/which-of-the-aws-certifications-is-the-right-one/): If you take a closer look at cloud technologies from AWS (Amazon Web Services), you will quickly reach your limits. Published 2020-01-25. - [Important domain endings are missing in Route 53](https://www.michael-wutzke.com/blog/important-domain-endings-are-missing-in-route-53/): Amazon Web Services has a route 53 domain registration service that does not allow Austrian customers to register domains with the .AT extension. Published 2020-01-22. - [Turn off automatic translation of web pages in Chrome](https://www.michael-wutzke.com/blog/turn-off-automatic-translation-of-web-pages-in-chrome/): The good news is: There is a meta tag that you as a website operator can install to switch off automatic translation ("Translate this Page"). Published 2020-01-17. - [.NET Meetup Frankfurt, Web Development using Docker and Angular](https://www.michael-wutzke.com/blog/dotnet-meetup-frankfurt-web-development-using-docker-and-angular/): On November 5, 2019, SDX AG invited to a DOTNET event held at Frankfurt's Westhafen. Published 2019-11-06. - [Moving Domains and TTL](https://www.michael-wutzke.com/blog/moving-domains-and-ttl/): If one sets the nameserver TTL too high when moving a domain by means of a domain transfer, one risks downtimes of all services such as websites and e-mail. Published 2019-10-12. - [AWS Partner Summit Frankfurt 2019](https://www.michael-wutzke.com/blog/aws-partner-summit-frankfurt-2019/): The AWS Partner Summit 2019 took place in Frankfurt, Germany. AWS experts from around the world discussed AWS solutions and especially AI and ML topics. Published 2019-09-20. - [Black Hat 2019](https://www.michael-wutzke.com/blog/black-hat-2019/): In August 2019 I visited Black Hat USA in Las Vegas, a security conference that has been held for around 25 years. Published 2019-08-12. - [No broken WordPress pages anymore](https://www.michael-wutzke.com/blog/no-broken-wordpress-pages-anymore/): Sooner or later, the die-hard blogger will reach its limits. Either the chosen theme or an installed plugin causes problems. Published 2019-07-30. - [AWS Transfer for SFTP, Problem and Complicated](https://www.michael-wutzke.com/blog/aws-transfer-for-sftp-problem-and-complicated/): Those who work in IT may know ad hoc requests of this kind: "We need an FTP server for a cooperation partner quickly," was the rough request. Published 2019-06-17. - [Scrum: Sprint Retrospective vs Sprint Review](https://www.michael-wutzke.com/blog/scrum-sprint-retrospective-vs-sprint-review/): Sprint retrospective and sprint review are two Scrum terms that teams mix up. A short explanation of both. Published 2019-06-17. - [Many Projects Fail on a Small Scale](https://www.michael-wutzke.com/blog/many-projects-fail-on-a-small-scale/): Over and over I am faced with the challenge of improving or evaluating things in my professional life. Typical questions are often the same: Published 2019-06-12. - [CURL and Elasticsearch](https://www.michael-wutzke.com/blog/curl-and-elasticsearch/): If you want to connect to Elasticsearch from the Linux command line, you can do that with CURL, for example. The default port of Elasticsearch is Port 9200: Published 2019-04-02. - [Elastic Stack and Elasticsearch](https://www.michael-wutzke.com/blog/elastic-stack-and-elasticsearch-basics-and-tips/): Elasticsearch and the Elastic Stack (formerly known as ELK Stack) have been around for some years now, for almost half an eternity in the life of someone in IT. Published 2019-02-01. - [Instagram Marketing 2019](https://www.michael-wutzke.com/blog/instagram-marketing-2019/): How Instagram works in 2019 and what it takes to succeed there, after several months of using it. Published 2019-01-26. - [Docker training courses completed](https://www.michael-wutzke.com/blog/docker-courses/): Docker is a software technology that makes developing and deploying applications different than in the past. Published 2018-12-28. - [AWS in productive use](https://www.michael-wutzke.com/blog/aws-in-productive-use/): Since autumn 2018 I have used AWS in production, after looking after virtual servers at Hetzner before. Published 2018-11-19. - [FAQ](https://www.michael-wutzke.com/faq/): the articles of the knowledge base.