Dirk Bolte - Senior Software Developer

Recommended expert

Birkenfeld, Germany

Experience

May 2024 - Present

1 year 9 months

Senior Software Developer

congstar

Mobile app backend development in the mobile network management area for end customers
Implementation of authentication methods
Converting a monolith to microservices
Operational support
Technologies: Kotlin, Quarkus, Microprofile, Jackson, MariaDB, Redis, JSON, XML, SOAP, Maven, Git, GitLab CI, Splunk, Grafana, Jenkins, Kubernetes, Helm, Terraform, Microservices

Apr 2024 - May 2024

2 months

Software Developer

Anonymous Client

Optimizing GitLab pipelines
Creating training materials around OpenID and gematik
Technologies: GitLab, GitLab CI, Java, Kotlin, TypeScript, Spring, Quarkus, Angular, Keycloak, OAuth, OpenID, gematik

Nov 2023 - Present

2 years 3 months

Technical Interview Consultant

WorkGenius

Conducting interviews with a focus on technology topics
Technologies: Java, Kotlin, various technical topics

Aug 2023 - Apr 2024

9 months

AWS/Kotlin Developer

OTTO

Fullstack development including DevOps in the product categorization area for eCommerce
Migrating from Spring Boot 2 to 3 and Vue.js 2 to 3
Database optimization
Technologies: Kotlin, Spring Boot, Microservices, MongoDB, JSON, Vue.js/TypeScript, REST, HAL, Gradle, Git, GitHub Actions, Terraform, Terragrunt, Docker, AWS, OIDC, Keycloak

Jan 2023 - Jul 2023

7 months

Lead Architect

JB10X

Web backend and frontend development for a SaaS solution in identity management and dynamic workflows
Operational support
Technologies: Java, Spring Boot, Spring Cloud, Microservices, Jackson, PostgreSQL, RabbitMQ, JSON, Vue.js, Maven, Git, GitHub Actions, Kubernetes, Docker Compose, FluxCD, OIDC, Keycloak

May 2022 - Dec 2022

8 months

Security Consultant

JB10X

Threat modeling of an existing application and advising on how to address discovered vulnerabilities
Software development
Technologies: Threat Modeling, Spring Boot, Kotlin, Java

Oct 2021 - Feb 2023

1 year 5 months

Technical Interview Consultant

expertlead

Conducting interviews with a focus on technology topics
Technologies: Java, Kotlin, various technical topics

Oct 2021 - Jan 2023

1 year 4 months

Senior Software Developer

congstar

Mobile app backend development for end-customer mobile network management
Porting a backend from Java/Spring to Kotlin/Quarkus
Operational support
Technologies: Kotlin, Java, Spring Boot, Quarkus, MicroProfile, Jackson, MariaDB, JSON, XML, SOAP, Maven, Git, Splunk, Jenkins, Kubernetes, Helm

Jul 2021 - Dec 2021

6 months

Software Developer

LANCOM

Integrating external identity providers using SAML and OIDC/OAuth2 into an existing SaaS solution for network management/IoT
Technologies: Kotlin, Spring Boot, Microservices, Angular/TypeScript, Hibernate, Jackson, PostgreSQL, JSON, XML, SAML2, OIDC/OAuth2, Keycloak, Gradle, Git, Kubernetes, Helm

Apr 2021 - Sep 2021

6 months

Principal Developer Operations Center

German Edge Cloud

Further development of a cloud management solution
Technologies: Kotlin, Spring Boot, jOOQ, PostgreSQL, JSON, Jackson, REST, HAL, Kubernetes, Helm, Terraform, cloud-init, Maven, Git

Mar 2021 - Jul 2021

5 months

Head of Security

comuny GmbH

Ensuring and advising the development team on product and operational security
Analyzing and aligning with external security and product requirements (BSI, gematik)
Technologies: Kotlin, Java, Spring Boot, Microservices, Angular/TypeScript, GCP, Hibernate, Jackson, PostgreSQL, JSON, JWT, REST, HAL, Swagger, Pact, OIDC/OAuth2, Keycloak, Android, Ionic, Gradle, GitLab-CI, Docker, Git, Threat Modeling

Mar 2021 - May 2021

3 months

Consultant

LANCOM

Evaluation and feasibility study of authentication technology options (SAML, OIDC/OAuth2) within a network management/IoT SaaS solution
Technologies: Kotlin, Spring, Microservices, Kubernetes, SAML 2.0, OIDC/OAuth2

Mar 2019 - Feb 2021

2 years

CTO / Fullstack Developer

comuny GmbH

Product design and development (backend, frontend, mobile), project and team management, and regular customer interaction
Architecture and implementation of a SaaS solution for identification and authentication (OIDC/OAuth2) with multiple microservices
Interface design and implementation
Security analysis and architecture
CI/CD
Successfully met high data protection and security requirements
Technologies: Kotlin, Java, Spring Boot, Microservices, Angular/TypeScript, GCP, Hibernate, Jackson, PostgreSQL, JSON, JWT, REST, HAL, Swagger, Pact, OIDC/OAuth2, Android, Ionic, Gradle, GitLab-CI, Docker, Git, Threat Modeling

Oct 2017 - Jul 2019

1 year 10 months

Product Owner / Fullstack Developer

LANCOM

Product Owner for two teams and coordination of multiple product owners
Feature and UX design
Fullstack development of authentication features, including interface and UI development, and end-to-end tests
Setting up a new location
Technologies: Java, Kotlin, Spring Boot, Microservices, Angular/TypeScript, Hibernate, Jackson, PostgreSQL, JSON, REST, Swagger, Gradle, Jenkins, Pact, Git

Aug 2015 - Sep 2017

2 years 2 months

Product Owner Wireless / Backend Developer

Sophos

Product Owner for five teams across three locations
Setting up a new site in India
Feature and UX design
Fullstack development of individual features, including interface design and development, for a network management/IoT SaaS
Technologies: Java, Spring, Microservices, REST, OAuth2, MongoDB, Redis, AWS, Git, Gradle, Bitbucket, Threat Modeling

Mar 2013 - Aug 2015

2 years 6 months

Senior Software Developer & Architect

Sophos

Backend development and architecture of a multi-tenant cloud application as SaaS in network management/IoT
Migrating an application from Ruby on Rails to Java/Spring
API design and development
Technologies: Java, Spring, Microservices, REST, OAuth2, Ruby on Rails, MongoDB, Redis, ElasticSearch, AWS, Wi-Fi, Git, Gradle, Bitbucket

Jan 2012 - Mar 2013

1 year 3 months

Remote

System z Firmware Architect

IBM

Architecture and development of firmware components for IBM System z in the networking area
Technical lead for a remote team in Moscow
Technologies: C++, C, Bash, Linux, RPM, SCons, CVS

Jan 2008 - Dec 2011

4 years

Team Lead / Firmware Engineer

IBM

Managing teams across multiple departments for local and distributed teams
Architecture and development of firmware components
Development of a virtualized test environment
Enhancing and maintaining critical development systems
Technologies: Groovy, Grails, Xen, C++, C, Bash, SAN, GPFS, Linux, Gradle, SCons, CVS

Mar 2003 - Dec 2007

4 years 10 months

System z Firmware Engineer

IBM

Architecture and development of firmware components for IBM System z in the networking area
Technologies: C++, C, Bash, Linux, RPM, SCons, CVS

Summary

Backend developer with frontend experience
Kotlin/Java, Spring/Quarkus, Angular/Vue.js, SQL/NoSQL, Cloud
21 years of professional development experience in international and distributed teams
12 years of team leadership and project management experience
10 years in cloud and security, authentication/authorization
5 years certified Product Owner