Stephan Schwab - Software Developer

Development of an agroforestry planning and design tool. ChatGPT is used extensively for research about plant species and their properties as well as a means to speed up development tasks.

• Fully automated build and deployment (CI/CD)
• Trunk-based development
• Java
• Spring Boot (MVC, REST, Data)
• Thymeleaf
• htmx for HTML5/CSS3 frontend instead of a framework
• HTML5, CSS3
• MongoDB
• ChatGPT for subject matter research

Client: Caimito Services, USA

Industry: Agriculture

Evaluated, planned and installed IoT gateway and end nodes to monitor soil humidity, temperature and conductivity to provide automated irrigation to a Miyawaki style forest co-financed by the European Union's LIFE program (via LifeTerra foundation).

• Created dashboards and automations for power monitoring, to control water pumps and other devices
• Did the electrical installation and software. The system is solar powered and off the utility grid.
• Internet of Things Network
• LoRaWAN
• NPC
• BLE
• Home Assistant
• Dragino, Milesight, Shelly, and SMA devices
• Docker, Docker Compose

Client: Caimito Agile Life, Spain

Industry: Agriculture

Worked 100% remote with an international DevOps style group on an internal application to manage SonarQube in combination with GitHub Enterprise.

• Backend development in Java
• Frontend development in JavaScript with Vuetify
• Maintenance of Terraform scripts and Helm charts for Kubernetes deployment
• Fully automated build and deployment (CI/CD)
• Code reviews and use of Pull Requests (PR) via GitHub Enterprise
• Developer support for .NET group
• Coaching of Junior Developers
• Java
• Quarkus
• Quarkus Native, GraalVM
• Hibernate
• Maven
• VueJS
• Vuex Store
• TypeScript
• Vuetify
• SonarQube
• Cypress
• Docker
• Microsoft Azure
• Kubernetes on Azure, Ubuntu Micro K8s
• Terraform
• Helm charts
• Keycloak
• Microsoft .NET
• Microsoft C#

Client: Mercedes-Benz Bank, Germany

Industry: Financial Services

Development of frontend application and marketing website CaimitoEU

• JavaScript
• VueJS, VueRouter
• HTML5, CSS3
• TailwindCSS
• Consumption of RESTful APIs
• PayPal integration for payment processing
• Web shop with shopping cart and product listing (overview, details)
• Internationalization (i18n) in English, German, Spanish
• Trunk-Based Development with feature flags and Continuous Deployment
• Cypress
• Keycloak (OAuth2)
• Docker, Docker Compose
• NGINX
• Multiple GitHub Actions workflows for automated build and deployment (CI/CD)
• Set up and maintenance of production, staging and test environments via Ansible (Debian based virtual servers)

Client: Caimito Agile Life, Spain

Industry: Agriculture

Development of ERP system GranjaEU for smallholdings

• Product design, software development and UX design
• Restful API development for external users
• Internationalization (i18n) in English, German, Spanish
• Test-Driven Development, Rapid Prototyping
• Trunk-Based Development with multiple daily deployments to production
• Delivery of emails via JavaMail via Google SMTP services
• Multiple GitHub Actions workflows for automated build and deployment (CI/CD)
• Set up and maintenance of production, staging and test environments via Ansible (Debian based virtual servers)
• Java
• Spring Boot (REST, Data, Mail, Thymeleaf, Security)
• Flyway
• JUnit
• Maven
• JavaScript
• VueJS
• Vuetify
• HTML, CSS
• Cypress
• Keycloak (OAuth2)
• Docker, Docker Compose
• MongoDB
• PostgreSQL
• NGINX

Client: Caimito Agile Life, Spain

Industry: Agriculture

Backend for Social Network

• NodeJS
• JavaScript
• VueJS
• HTML, CSS
• Functional programming with promises and lodash/fp
• Coached Senior JavaScript Developers on test-driven development (TDD)
• Cucumber.js
• Chai
• JEST
• Integration of several external services like OneSignal, Firebase
• JSON Web Token Authentication
• Geographically distributed team with team members working from individual locations in Europe, Japan, and USA.
• Support for debugging an IOS application

Client: PH7, Japan

Industry: Social Networks

Created rmq - A Ruby Wrapper for the IBM MQ Series client API

• Ruby
• Cucumber
• IBM MQ Series Message Broker
• SOA based application in an integration project
• Coached a large group of developers and testers on Acceptance Test-Driven Development with Cucumber and my tool rmq

Client: Independent Health, Buffalo, New York, USA

Industry: Insurance

Vastly extended RAutomation per client request. RAutomation is a tool to automated Windows desktop programs for testing purposes and enable to use of Cucumber in the context of Acceptance Test-Driven Development.

• C, C++
• Windows Win32 API
• DLL development with Visual Studio
• Ruby
• Cucumber
• Automation of desktop application via Win32 API calls and accessibility features of Windows

Client: Nationwide Insurance, Columbus, Ohio, USA

Industry: Insurance, Financial Services

Code on GitHub

In an embedded Senior Developer Advocate role participated in an agile transformation spanning 23 teams and personally provided technical and organizational coaching to 6+ teams and about 80 individuals.

• Java, J2EE
• IBM Rational Application Developer
• IBM Websphere
• Spring Framework
• Spring Batch
• Oracle SQL
• Ruby
• Cucumber
• Pair programming with Developers and Testers
• Mob / Ensemble programming
• Business Analysis
• Story Mapping
• Executable Specification (ATDD)

Achieved to deliver to production a prototype application within weeks and in time for the first presentation to the internal customer.

Client: Nationwide Insurance, Columbus, Ohio, USA

Industry: Insurance, Financial Services

As Senior Software Developer co-created the Summon product. The product ingests academic reference data from different sources, normalizes it and creates a search index for use by a frontend application.

• Java, standalone
• Apache Solr
• Apache Lucene
• Apache Camel
• XML
• Apache ActiveMQ
• Mentoring remote Chinese team members
• Remote work with an on-site week every 3 months for team coordination

Client: Serials Solutions, Seattle, Washington, USA

Industry: Academic Publisher

Contractor role to uplift technical skills of software architects and team members on agile development practices including test-driven development and continuous integration.

• Java
• Ruby
• Cucumber
• Spring Framework
• IBM Websphere
• Oracle SQL

Client: Nationwide Insurance, Columbus, Ohio, USA

Industry: Insurance, Financial Services

Developed the agile lifecycle management tool Caimito One Team for distributed Scrum teams.

• Java
• JavaScript
• HTML, CSS
• Thymeleaf
• MySQL
• Hibernate
• Spring Framework
• Software activation via cryptographic key
• Deployment as a on-premises software

Client: Caimito Development, Panama City, Panama

Industry: Software

Built Cloud9's Messenger product (webapp) (from inception to deployment to production) using Scrum as methodology.

• Java
• JavaScript
• HTML, CSS

Client: Cloud9, San Mateo, California, USA

Industry: eCommerce

I develop software since the early 1980s and have used numerous development tools and programming languages on many different operating systems and environments.

In the 1990s I created one of Germany's early Internet Service Providers (my own company). Besides being co-founder I developed internal applications for provisioning and billing, deployed and configured routers and other devices to connect customers to our network.