Sebastian Büttner
I am experienced from the circuit board to the high-level Dashboard. Enthusiast Unix User. Projects where reliability and performance are key always get my attention. Highly interested in a decent User Experience
Experience
Software Engineer
Nola Ventures
Through nola ventures I am available as a freelancer to support with data integrations for (but not only) IoT, general IoT challenges and finally all things microservices, containers and serverless. I can be booked from a daily basis to multi-month projects.
Spring 2022 - Present
Product Owner thin-edge.io
Cumulocity IoT by Software AG
Guiding the product development to create a product with a great UX and real value for users. As Product Owner, I brought my field experience to the developer team. I managed the development tasks in the backlog and organized implementation preparation. I was one of the major contact persons for customers and partners to evaluate their needs and connect them with the development. Also set up the GitHub project structure for the open source project, as just one thing to mention. In general, I gained a lot of knowledge about open-source and what challenges companies starting open-source projects are facing.
My main tasks were not coding in this position, but still, I got some insights into Rust and what it means to code in Rust.
Discussing with very experienced and knowledgeable colleagues in my team, I learned very much about software architecture, memory-optimized, efficient and resilient code. I enjoyed these topics and loved working in this area that seems to be underrated very often today.
2020 - 2022
IoT Solution Architect
Software AG
Experienced the broad Use Cases in the IoT-Segment. Working many hours with the c8y Thick Edge(proprietary Linux-based VM for edge use-cases). Projects in all industries where IoT matters.
With this broad field of IoT, I also implemented quite a number of PoC Microservices and device agents. The majority of work was done in python, golang and spring boot here.
2018 - 2020
Embedded System Developer
Baumtec GmbH
Developing a Linux image for lighting controller boards. Integrated proprietary Software Components into a custom-fitted Linux distro. This was one of my first professional experiences with Linux, my interest and preference for working with Unix systems remained until today. Working with Linux and usually being one of the more experienced with it, accompanied my career ever since.
2014 - 2014
Education
Bachelor Computer Science
University of Applied Sciences Darmstadt
Cooperative Study program, half time at University and half time working for Software AG in the Research department. About 3 years on "enera", a project about metering and controlling the electrical grid of the future.
Beginning with this project, I am very interested in all topics about energy grid projects. By the time we worked with java for the majority of topics, some minor python was also used.
Beginning with this project, I am very interested in all topics about energy grid projects. By the time we worked with java for the majority of topics, some minor python was also used.
2014 - 2018
Apprenticeship System Informatics Technician
Bosch Security Systems GmbH
Working and learning on the edge between electronics and computer science. Gained knowledge from soldering circuit boards, up to the industrial protocols connecting them. From this apprenticeship I do know how sensoring and devices in the field work. Also I experienced what it means installing the sensors that are producing the data for IoT use-cases. From this time I also do know how much effort it can be to exchange a device or to find failures in on-site systems.
2009 - 2013
References
Transcoder Microservice
Protectsys GmbH
Protectsys wanted to connect their sensor devices to their new IoT Platform of Choice Cumulocity IoT. The sensors are sending data in a proprietary binary format and base64 encoded. To make the IoT platform understand the data it needs to be transcoded to a specific JSON format. The developed microservice provides a secured REST endpoint for authorized devices to send their data. Additionally, the microservice handles some more complicated tasks before creating JSON measurements in the platform:
- Check if the device is already created in the IoT Platform and create if not.
- Manage registration with the related end customer.
- Easily accessible warnings, for devices that are sending data that are not registered with the platform and not related to a end customer. Therefore warning of possible lost data.
#python #microservice #api
2022
Weather alarming
Protectsys GmbH
Protectsys wanted to offer a service to their customers where they get warned in case there are stronger winds or precipitation forecasted in the next couple of days. I built a microservice that fetches the relevant positions from their IoT Platform. For each position, a forecast is fetched from the OpenWeatherMap API. Each forecast is then checked again a threshold that was discussed with Protectsys. In the case of an exceeded wind or precipitation threshold, an alarm is generated on the IoT platform and the end customers also do get a warning email with the date and the forecasted numbers.
#golang #microservice
2022
Skills
Programming Languages & Tools
Interests during my free time
I am an aspiring chef and enjoy eating authentic food. I always like to explore new technologies and I am always interested in new stuff.
From 2021 on I do own a sailing boat together with my girlfriend. That said vacations often are for maintaining the boat. Since spring 2022 we live on our sailboat, travel the med and work remotely.