For my customers I worked everywhere in the data-flow 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
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.
Exaris Solutions supports companies in the health and pharma sector with insights and data enrichment of their groups of interest of doctors, hospitals etc. With their data-driven business model they are heavily relying on big data technologies. I helped them setting up and improving their infrastructure on AWS and finding cost-effective solutions for their business needs. Throughout the projects with them I used a lot of VPC networking, EC2 and Lambda with AWS SAM of course, both EKS (Kubernetes on AWS) and ECS, IAM, cognito, SQS and of course this list is not exhaustive. Infrastructure as Code was used, or not used on a per case situation, we began with cloudformation and moved to terraform lateron. Development on Lambda was done in python as per customers preference.
I supported Protectsys GmbH with moving from a custom developed IoT solution to a standart product they decided to move to. I helped them with the architecture and how they can integrate their measurement data from sensor-devices all over europe. To fill gaps I implemented two microservices for them. One written in python to transcode binary encoded data to json. Another microservice written in golang to integrate weather data into their system and create alarm on upcoming weather events.
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.
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.
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.
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:
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.
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.