As a Senior System Architect (Siemens ITS, BSH etc.) I have been very successful analyzing complex systems, working with stakeholders to retrieve the obvious and also hidden requirements and then come up with solutions, which are aligned between all parties with me being the catalyst and driver. Part of my work includes being the senior technical counterpart for local and also offshore development teams. I have a good track record working with development teams in India for example (multiple visits in India of cause).

UX/UI is also on of my strengths. I have learned the basics working for Vodafone Global and since those days i work with a focus on UX and UI. I offer related services (analysis, integration of standards, wireframes, briefing of visual designers). This includes the UI for embdedded/edge systems, mobile solutions in particular. I am also providing services regarding multi modal UI. Integration of speech dialog systems into existing or new embedded systems for example. Besides working on abstracted visual design tools for speech dialog solutions i was also working on completely local NLP solutions for edge devices, integrating them into more complex systems (DialogFlow, Alexa) for hybrid systems. Add cloud APIs, lip reading and the UI state machine gets complex and needs to be improved.

The third path is the system buildup for scaleable big data/data space systems based on Kafka and Pulsar with the help of Presto, Pig and Hive. Ingress your IoT data, normalize and enrich it as part of the process to support future use cases, nobody knows about today. I am currently diving into Iceberg, since it seems to be a natural next step for structrured big data.

I like to work with node.js and especially NestJS, but do also work with Spring Boot, Grails, Micronaut and Quarkus.

Docker/Kubernetes: sure.

Main focus: I am helping my customers to find the best solutions. To do that i listen to the internal stakeholders, find out about the requirements (some are "obvious" and some are unknown even to all stakeholders) and propose a solution, which is the best way going forward for the customer. I act as a sparring partner to define the scope, improve and fine-tune it. 

UI/Applications, Cordova, Ionic, Angular, Android, mobile, Ionic/PWA/SPA, Live Streaming, group chat, backend, microservices, frontend, backbone, data analysis, UI, video streaming, file sharing, APIs, node.js, NestJS, Docker, Kubernetes, Nextcloud, Jitsi, Ovenmediaengine, Wowza, Kurento, OpenCV, BigBlueButton, Machine Learning, Keras, Traefik, Keycloak, Prometheus, Grafana, MongoDB, AWS, S3, EC2, Server, Ubuntu, Scripting, Python, nginx, Adyen Payment API, RabbitMQ, API, REST APIs, KOA, Typescript, IoT, big data, metadata, LinkedIn, Hadoop, SQL, Spring Boot, Spring Security, SOAP, ActiveMQ, Kafka, Spark, OpenWhisk, GIS, Ontologies, DevOps, JavaScript, Java, Kibana, Wireshark, SNMP, OCIT, Cloud, protobuf/gRPC, Cassandra, Aerospike, Min.IO, Presto, Hive, Interface, ecommerce, Interfaces, RESTful, JSON, open APIs, XML, cloud storage, backup, Mashups, Data Mining, JS, HTML5 Canvas, Grails, Groovy, REST, Spring, Hibernate, MySQL, Linux, Tomcat, CSS, HTML5, online payment, data security, API programming, WordPress API, iOS, Apache POI, WAV, FLAC, MP3, Amazon S3, Google, IBM, transcoding, encryption, Open Source Cloud, Intellij, Studio, WebStorm, data management, system security, deep learning, gRPC, Tensorflow, System Monitoring, RPi, Nvidia Jetson Nano, ESP32, embedded Linux, OnVif, multi modal, DOM tree, NLP, Angular 9, RxJS, NgRX, Akita, Maven, CI, Webpack, UX, WebRTC, Yocto, Jupyter, Blockchain, UI/UX components, business logic, Angular6/7, abstraction layer, CMS, Natural Language processing, AllSeen/AllJoyn, OpenHab, Iotivity, HomeKit, NLP Technologies, Arduino, Raspberry Pi, IFTTT, SmartThings, Lora, FreeRTOS, Linaro, AngularJS, Tizen, Alexa, Google Assistant, Dialogflow, MyCroft, RASA. Crank Software, embedded, Anaconda, CUDA, REST API, Room/SQlite database, RxJava, DB, Google Maps, System Design, Linux environments, GUI, Google Home, Strongloop, sensor, REST communication, Android devices, database, Android SDK, Android apps, gulp, grunt, bower, Yeoman, Java/Groovy, Grails Backend, Mysql/MongoDB, Apache, Apache Kafka, RESTful API, Wireframes, User Stories, iBeacon, BLE, Bluetooth, NFC, Google Play Services, Android Studio, Jira, Confluence, Stash, BitBucket, Android Media, Media streaming, Background Services, Theming, git, RESTful interfaces, GSON, UX Design, Phonegap, jQuery, Webkit, Android libraries, ActionbarSherlock, SVN, Gradle, GWT, HBM, WebSocket, System analysis, jQuery Mobile, Twitter Bootstrap, Webfonts, mobile application, Android framework, Client/Server, Idea/Android Studio, Embedded Control, user interface, mobile network, OMAP, CSS Design, Qt, VoIP, SIP, IMS, iPad Solution, SZ, web content, JavaScript libraries, LTE, session management, RIL, C, Radio, User Experience, Scrum, Waterfall, Codecs, Modem, Intellij Idea/Android Studio, HTML4, BONDI APIs, Windows Mobile, Symbian, C++, BONDI, JIL, WAC, HTML 4/5, W3C, app store, application framework, EMP, Prototype, OpenMoko, mobile Linux, Text Messaging, File Transfer, System architecture, Eclipse, C. C++, Lauterbach, Visio, MS Office, MS Project, RTP, RSVP, SAP, SDP, MSRP, AJAX implementations, Photoshop, Emulators, CDN, mobile devices, GUI Design, Office Tools

I have been working on-site internationally and in various places in Germany (Duesseldorf, Frankfurt, Berlin, Nuremberg, Fulda, Darmstadt, Traunreut, Munich). I have been living in the Bay Area for a while too. For some of my projects i have been visiting various places in India, the Carribean and most european countries. 

Would prefer the Munich area but Frankfurt, Nuremberg, Berlin are fine too.

Austria/Switzerland: Depends on the daily rate ....

I am - on purpose - crossing the lines in my projects from time to time. I am working on topics like UX/UI to System Architect and machine Learning but also focusing on Kafka/Pulsar for a project and then moving on to/back to Android or Embedded and Edge devices.

Why is that?

I was recently working as a Senior System Architect steering and helping the dev team with up to 50 developers (Pune/India for Siemens ITS for example) for a Smart City/Traffic Control/IoT project recently. My project history helped me big time to help the team, to provide a lot of know how transfer (how to build APIs, how to build a scalable big data system etc.) and to steer a bunch of initially unexperienced developers to form a powerful team during the time. All of the projects and work i did before was very helpful enabling me to steer such a wild offshore team.

Now i am working as CTO for a startup defining the technical architecture but also working as a developer. Before that i helped a large company to define the UI technology for its embedded solutions (doing a shootout between four competing candidates - implementing the same UI flow to be able to compare) and also worked on potential use cases for machine learning for variouis use cases. I implemented a edge based NLP solution, worked on a abstracted system for define and manage voice UI dialog systems. Before that i defined the system architecture and the Android app for my mobile context based ad startup (succesfull Exit to Verve Inc.). 

Why all those different paths? Well, they are all connected. Without a good UX/UI any product looses and "eats" unnecessary user time. Voice is just another UI component but most UI designers do not understand the implecations for multi mdal scenarios. The embedded platforms have not been developed to support multiple UI states. The backend need to be scalable to be able to retrieve the data from millions of mobile devices and IoT sensors. The backend technolopy for these kind of use cases changed  quite a bit. From JPA to Kafka to Pulsar to OpenWhisk etc. From in-House development to open source solutions like the activities from SODA foundation for example. 

The technologies change fast these days. It is good to understand the basic components first hand from different angles to be able to support my customers as good as possible.

https://www.linkedin.com/in/juergenfey/