Mark Hofmann

Java + Kotlin Backend Development, Architecture and Consulting

Kotlin Backend Development - Migration of a Mainframe based service to a modern cloud-based architecture using AWS - Development of solutions in close coordination with the sales department - Refactoring of the existing datastructure - Migration from MongoDB to PostgreSQL - AWS SQS integration - Excel report generation Linux, Intellij IDEA, Kotlin, Java, Spring Boot, MongoDB, PostgreSQL, JPA, AWS SQS, AWS S3, SFTP, Hibernate, Maven, Flyway, Kubernetes, Terraform, Gitlab, JIRA, Confluence, Trello, SCRUM

Java Backend Development - Development and maintenance of internal backend services - Deployment and maintenance of the test environment on GCP - Development of Gradle build scripts

Development of a framework for app-based Startups. - Planning and implemtentation of the architecture - Development of backend services with REST API and Websockets - Management of the CI/CD pipeline - Management of cloud services - Project planning (Kanban) Kotlin, Java, Microservices, Websockets, jOOQ, Vert.x, Gradle, Postgresql, Vert.x Reactive PostgreSQL Client, Liquibase, OpenAPI, Intellij IDEA, Git, DigitalOcean, S3, CircleCi, Bitbucket, Kubernetes, Docker

Development of a b2c website for insurance applications for a large insurance company based on the clients specifications. - Development of backend services based on the client framework - Research of required APIs and tasks - Coordination of the development plan with the clients development team - Communication with the clients specialist department

- Design of the of the overall system architecture based on Microservices and AWS - Specification and implementation of the REST API - Development of the Backend using Java - Setup and maintenance of the Docker and AWS based cloud environment - Setup and maintenance of the Continuous Integration and Delivery (CI/CD) system - App deployment (App Store + Play Store) - Authoring of system specifications and documentation - Interviewing of developer candidates - Lead of the development team, code reviews

- Development of the microservice architecture - Development of all microservices - Development of the REST interface - Setup of the DevOps framework

Java Software Development, Architecture, Consulting

Maintenance + Development of an Webapp for risk management - Development of the backend services - Development of JSF templates - Development of Gradle build scripts - DB updates with Liquibase

- Development of the system architecture and database structure - Specification and implementation of the REST API - Design und implementation of the backend services - Development of the Gradle based build system

• Development of an server based disease diagnosis App for dogs • Creation of the architecture and database structure • Development of the REST APIs • Development of Flex + GraniteDS based admin tools • Creation of the landing pages + SEO (www.doggydoc.com + mobi.doggydoc.com) • Administration of the Linux servers • Installation and administration of Nexus Maven repository + Jenkins continuous integration system • Development of deployment scripts

Entwicklung des Backends einer News App Erstellung der Systemarchitektur und Datenbankstruktur, Entwicklung der REST APIs, Bildskalierung, Anbindung von S3, Import von RSS Feeds

Development of a Wicket-based data entry tool for medical studies • Development based on specifications of the customer • Refactoring of the existing system base to use current standards IT-environment: Mac OSX, Ubuntu Linux, IntelliJ IDEA, Java 1.7, Apache Wicket, Spring Framework 3.1, AspectJ, Apache Commons, Hibernate, JPA, SLF4J, Tomcat, PostgreSQL, Oracle DB, Maven

ROCKSTAR MODELS is the rockstar among the model agencies. The agency aims at bringing a new type of model into the market. Models with attitude, possibly even tattoos and piercings - simply people who represent the new urban way of lifestyle and beauty. Being a "technology guy" the main part of my job in this company is to build and maintain the website and model database.

Development of a REST configuration framework based on Redis and Spring MVC - Development of Unit-tests with Mockito - Adjustment of the newsletter delivery - Development of JMeter tests - Profiling with VisualVM

Refactoring and further development of an online shop for sport travel - Refactoring and extension of the architecture - Integration of the spring framework - Migration of the build-process to Maven - Refactoring of existing JSPs to use Tiles - Further development of the application based on existing standards and patterns - extension of the database and programming of the persistence layer - Coaching of the developers in the team

Development for a new socialmedia internet startup - Creation of the architecture - Integration of the application in Scala + Java - Creation of the database and programming of DB persistence layer / DAO layers via Hibernate - Development of a Facebook-access layer via RestFB - Creation of a REST/JSON API for the PHP-based frontend - Development of a product import tool via REST/JSON

New development of an administration systems for car registrations o Consulting on which architecture to choose o Implementation of the selected architecture and optimisation of the existing systems o Java Software-development according to SCRUM o Creation of the build environment based on Maven

Webshop development with Java, consulting