System Design & Architecture
Distributed and real-time systems with clear architectures — fault-tolerant, auditable and built to scale and to last for years.
Flemming.IT · Engineering Berlin
Engineering —from siliconto the app.
Systems, software and embedded solutions from a single source. Designed, built and operated — from idea through prototype to production.
End-to-end
Silicon Firmware Backend App
Services
One continuous stack.
Six areas of expertise, one coherent stack — from low-level firmware through the backend infrastructure to the app.
Software, Web & Apps
Software, web and apps from backend to interface — considered, maintainable and cleanly built. One stack, one signature.
Embedded, Firmware & Hardware
Hardware-level systems from the board through firmware to the 3D-printed enclosure — with sensing, vision and resilient wireless links, even in harsh conditions.
DevOps, Backend & Hosting
Backend infrastructure, automated deployment and own operations — from first setup to a stable production cluster. Sovereignly hosted.
Security & Sovereignty
Secure, fault-isolating systems for regulated environments — auditable, sovereign and built for contexts where control matters.
0→1 & Startup Building
From first idea to a working product — fast to prototype, then hardened. Board, backend, AI and app from a single source.
Approach
From idea to a robust system.
A proven path: first show that it works, then harden it properly — together with the team.
01
Understand & design
An ambiguous problem becomes a clear architecture. Risks first, assumptions tested, options kept open.
02
Prototype & validate
Fast to a working end-to-end prototype — from firmware to UI — that proves early that it works.
03
Harden & operate
The prototype becomes a robust, secure system in production — documented, handed over, supported.
Work
Selected work.
Own developments and client projects — from embedded and IoT through web and mobile to sovereign AI.
Some projects from confidential or regulated environments are deliberately hidden here.
No projects found.
AI 2025
Ch∆In (FAI Chain) ↗
Deterministic, WASM-sandboxed AI workflow engine for regulated environments. Tamper-proof audit chain, CRA-ready.
RustWASM
AI 2025
Br∆In (BrAInOS) ↗
Cognitive AI runtime in Rust — 33-crate workspace, event-sourced, semantic memory (Qdrant), local-first.
RustQdrant
AI 2024
Plenario
RAG platform over a hybrid graph (ArangoDB) + vector store (Qdrant) for German parliamentary data. FastAPI, spaCy NER.
Flutter/DartPythonFastAPIspaCy-NERQdrantArangoDB
Embedded 2017–24
AI Golf
Embedded AI product end-to-end: sensor fusion, on-device vision, fault-tolerant LoRa/LTE comms. International patent.
C/C++VisionLoRa/LTE
AI 2023
CDU Copilot
AI copilot app for political use. Flutter, Firebase.
Flutter/DartFirebase
Mobile 2021
Shift.today
Shift-planning app — cross-platform, Java backend.
Java
Mobile 2021
CardWallet
Secure card and data vault as a mobile app. Encrypted local storage.
Java
IoT 2020
Luciflex IoT Lights
IoT lighting control on ESP firmware — wireless control and scenes.
C++ESP
IoT 2020
Smart Pool
Smart AI pool control — ESP firmware, sensors and MQTT with adaptive control.
C++ESPMQTTKI
Web 2019
Gamblingate
System to verify gamblers’ eligibility to play via the OASIS self-exclusion database. Full web stack.
Flutter/DartOASIS
Web 2018
Blackcentric Onlineshop
Online shop / e-commerce — shop system and web presence.
PHPMySQL
Web 2018
Incinity.media Press Portal
Press portal — editorial and publishing platform.
WebBackend
Web 2017
Lichtheiler Webportal
Lichtheiler web portal — presence and content management.
PHPMySQL
Web 2016–20
advanced-it.academy
E-learning platform of the Advanced IT Academy — online and in-person courses.
ScalaPlay Framework
Web 2014
mtv-mariendorf-1889.de ↗
Club website MTV Mariendorf — CMS and web presence.
React
Web 2014
Kolonie.online ↗
Social network for all of Berlin's allotment garden associations — networking, members and content.
Flutter/DartPostgreSQL
IoT 2010–15
Open Inspire (+ Home) ↗
Open IoT platform for monitoring and control; a Home variant for smart-home use.
JavaIoT
More on the AI projects at the product brand Explore Flemming.AI →
Profile
Dr. Stefan Flemming
Systems architect & 0→1 builder.
Founder and systems architect with 30 years across the intersection of embedded systems, AI and distributed platforms. Ph.D., four-time founder and CTO.
From the research reactor through the judiciary to defense-relevant AI: systems where data protection, auditability and sovereignty are non-negotiable.
- 30+
- years hardware & software
- 4×
- founder / CTO
- Ph.D.
- + M.Eng. with distinction
- Berlin
- clearance-ready (SÜG / NATO)
Evidence
- International patent (embedded AI)
- Security-vetted: IAEA, research reactors
- 8 years lecturer, Beuth Hochschule Berlin
- Chair, Digitalisation & AI Strategy, MIT Berlin
Trust
Built for environments where control matters.
Sovereignly hosted
On own infrastructure in Germany — without dependence on hyperscalers.
Auditable
Traceable, reproducible and verifiable — down to the individual run.
Security-aware
Experience from regulated and security-vetted environments.
Contact
Got a project in mind?
From consulting to full delivery — a short message is enough.