2024 - today: Created dashboards and automations for power monitoring

Place of Work: Spain

Role: IoT Developer

Customer: on requst

Tasks:

• Evaluated, planned and installed IoT gateway and end nodes to monitor soil humidity, temperature andconductivity to provide automated irrigation to a Miyawaki style forest co-fi nanced by the European Union'sLIFE program (via LifeTerra foundation).
• Created dashboards and automations for power monitoring, to control water pumps and other devices. Did theelectrical installation and software. The system is solar powered and off the utility grid.

Skills:

Internet of Things Network, LoRaWAN, NPC, BLE, Home Assistant, Dragino, Milesight, Shelly, SMA devices

2022 - 2023: frontend application to promote an ecosystem restoration project

Place of Work: Spain

Role: Product Designer and Developer

Customer: on request

Tasks:

• CaimitoEU is a frontend application to promote an ecosystem restoration project in Andalusia, Spain. The application contains a shop for packaged products and also an innovative butcher shop to facilitate the sale of fresh Iberico meat.
• It is written in JavaScript with VueJS (version 3), HTML5 and CSS3 for styling. After a bad experience with TailwindCSS the styling was redone in pure CSS3. It is deployed as a Docker container with an NGINX reverse proxy in the front and for handling SSL encryption. CaimitoEU consumes an API provided by GranjaEU and does not have local data storage.
• Secured via Keycloak, CaimitoEU calls the backend API REST endpoints authenticating itself as a service account.
• To process payments PayPal is integrated. CaimitoEU displays information in English, German, Spanish languages via vue-i18n and some Vue Router tricks to redirect to language specific pages for larger content.
• Build and deploy happen via GitHub Actions to a staging and production environment. The multi-stage build includes Cypress UI tests and also Cypress smoke tests before a candidate container is marked as ready for deployment.
• More complex features that take longer in development are controlled via feature flags in order to make them visible in the staging but not in the production environment.
• GranjaEU is the backend API for CaimitoEU and also a small-scale ERP system for running a farm which is being used daily by the workers of Granja Caimito.
• The backend API is coded in Java with Spring Boot. It exposes REST endpoints to the GranjaEU webapp and also a secured public API, via Keycloak, for CaimitoEU (in the future, other farm applications as well).
• User management is done within Keycloak. Data is stored either structured in PostgreSQL or as documents in MongoDB.
• The user interface is made with Vuetify and supports English and Spanish languages via vue-i18n.
• GranjaEU also sends emails via JavaMail and the Google SMTP server to customers in response to shop actions and to notify customers about state changes for their orders.
• Test-driven development and rapid prototyping are two of the methods used. Actual farm workers use the application at a very early stage and provide feedback. Deployment to production - in the sense of trunk-based development - for both applications happens multiple times per day in small chunks.
• As with CaimitoEU build and deploy happen via GitHub Actions as a multi-stage build pipeline. Maven is building and running a large number of JUnit unit and integration tests. Cypress is used to test the GranjaEU web UI and also runs smoke tests of the deployed application for selected critical functionality. The output is several Docker containers which are stored at GitHub's container registry and deployed via SSH to a Docker Compose to staging and production environments.
• All servers running Docker Engine based on Debian Linux are maintained by myself.

Skills:

VueJS, Vuetify, Cypress, Keycloak (OAuth2), Docker (compose), MongoDB, PostgreSQL, NGINX, Spring Boot (REST, Data, Mail, Thymeleaf, Security), Flyway, JUnit, Maven

2021 - 2022: Coaching on Object-Oriented Programming

Place of Work: Germany

Role: Developer

Customer: Mercedes-Benz

Tasks:

• Worked 100% remote with an international DevOps style group on an internal application to manage SonarQube in combination with GitHub Enterprise.
• Backend work with Java, Quarkus, Hibernate, Maven Frontend work with VueJS, Vuex Store, Typescript, Vuetify, Cypress automated testing
• Development environment was Docker, GitHub Actions. Production deployment to Azure Kubernetes cluster.
• Worked on Quarkus Native Executable on GraalVM as Docker container. Did minor changes to Helm charts and within Microsoft Azure.
• The application uses Keycloak for authentication and I also got to do some work with its API and manage local deployment for testing purposes.
• Worked on a demo setup for a different group to enable them to use Microsoft .NET on Kubernetes. Development with .NET on Mac OS and deployment to selfhosted Ubuntu MicroK8s.
• Did some limited coaching on Object-Oriented Programming and Test-Driven Development for the colleagues with a SysAdmin background.

Skills:

Java, Quarkus, Hibernate, Maven Frontend work with VueJS, Vuex Store, Typescript, Vuetify, Cypress automated testing, Docker, GitHub Actions, Azure Kubernetes cluster

2020 - 2020: Orchestrate a number of external services

Place of Work: Japan, USA, Europe

Role: Developer

Customer: PH7

Tasks:

• Working on a NodeJS based API to orchestrate a number of external services.
• Functional programming style and use of Promise and lodash/fp.
• Unit testing with JEST, acceptance and smoke testing with Cucumber.js and Chai.
• Geographically distributed team with team members working from individual locations in Europe, Japan, and USA.

2019 - 2019: Performed an IT process and system assessment for the executive board

Place of Work: Pristina, Kosovo

Role: Consultant

Customer: Raiffeisen Bank

2019 - 2019: Performed an IT process and system assessment for the executive board

Place of Work: Sarajevo, Bosnia-Herzegovina

Role: Consultant

Customer: Raiffeisen Bank

2019 - 2019: Performed an IT process and system assessment for the executive board

Place of Work: Belgrade, Serbia

Role: Consultant

Customer: Raiffeisen Bank

2018 - 2018: Improving engineering practices

Place of Work: Moscow, Russia

Role: Agile Coach

Customer: Alfa Insurance

Tasks:

• Continued the work from 2017. Worked with several teams and senior management on improving engineering practices.
• Advised on network security and information security practices.
• Introduced a former coachee to the teams to support XP style testing practices at the team level.
• Consulted on Self-Contained Systems (SCS) based on Docker containers to improve application architecture

2017 - 2017: Performed an audit of the software development and operations groups

Place of Work: Moscow, Russia

Role: Agile Coach

Customer: Alfa Insurance

Tasks:

• Performed an audit of the software development and operations groups in preparation of a larger engagement to uplift skills and create a DevOps structure.
• Did some initial coaching on two teams to lay the foundation for future coaching work with these two teams and additional groups to follow.

2017 - 2017: cooperation with other Agile Coaches

Place of Work: Moscow, Russia

Role: Agile Coach

Customer: Alfa Bank

Tasks:

• Continuation of the 2016 engagement
• Objective is to create a DevOps culture inside the bank and restructure the whole organization accordingly.

2016 - 2016: Test-Driven Development

Place of Work: Germany

Role: Agile Coach

Customer: Thales, Stuttgart

Tasks:

• Within the axle counter group of Thales Transportation Systems I coached project manager and solution architect on their new roles of Scrum Master and Product Owner.
• Introduced technical team members to Test-Driven Development in C using the tool Cantata.

2016 - 2016: product development

Place of Work: Bad Waldsee, Germany

Role: Agile Coach

Customer: Versandhaus Walz

Tasks:

• The engagement started as a group of three coaches for their main office and an external development partner.
• Initially I trained and coached on technical matters in a Java J2EE environment with IBM Websphere Commerce.
• Over time I became the main coach for the main office and worked with a larger group developing the new eCommerce shop for Walz.
• Coaching topics included product development vs service delivery, information visualization, integration of non-developers, restructuring a traditional retailer to become an eCommerce company, new roles and skills.
• For 2017 Walz wants to bring all shop development inhouse and I started in 2016 to train newly hired developers on microservices architecture and the DevOps model.

2016 - 2016: cooperation with other Agile Coaches

Place of Work: Moscow, Russia

Role: Agile Coach

Customer: Alfa Bank

Tasks:

• Did anamesis with a number of several development groups over the course of a whole week and created a proposal about creating a DevOps culture within a division for management.
• Received approval to proceed in 2017.

2016 - 2016: Introduced User Story Mapping

Place of Work: Frankfurt, Germany

Customer: Deutsche Bank

Tasks: