Dirk Bolte
Senior Software Developer
Experience
May 2024 - Present
1 year 3 monthsSenior Software Developer
Congstar
- Mobile app backend development for mobile service management for end customers.
- Implemented authentication methods.
- Operations support.
- Languages/technologies used: Kotlin, Quarkus, Microprofile, Jackson, MariaDB, Redis, JSON, XML, SOAP, Maven, Git, GitLab CI, Splunk, Jenkins, Kubernetes, Helm, Terraform, microservices.
Apr 2024 - May 2024
2 monthsSoftwareentwickler
Anonymer Auftraggeber
- GitLab pipeline optimizations.
- Created training materials around OpenID and gematik.
- Languages/technologies used: GitLab, GitLab CI, Java, Kotlin, TypeScript, Spring, Quarkus, Angular, Keycloak, OAuth, OpenID, gematik.
Nov 2023 - Present
1 year 9 monthsTechnical Interview Consultant
WorkGenius
- Conducted interviews focused on technology topics.
- Languages/technologies used: Java, Kotlin, various technical topics.
Aug 2023 - Apr 2024
9 monthsAWS/Kotlin Developer
OTTO
- Fullstack development including DevOps in product categorization for e-commerce.
- Spring Boot 2 to 3 migration.
- Vue.js 2 to 3 migration.
- Database optimization.
- Languages/technologies used: Kotlin, Spring Boot, microservices, MongoDB, JSON, Vue.js/TypeScript, REST, HAL, Gradle, Git, GitHub Actions, Terraform, Terragrunt, Docker, AWS, OIDC, Keycloak.
Jan 2022 - Jul 2023
7 monthsLead Architect
JB10X
- Web backend and frontend development for a SaaS solution in identity management and dynamic workflows.
- Operations support.
- Languages/technologies used: Java, Spring Boot and Spring Cloud, microservices, Jackson, PostgreSQL, RabbitMQ, JSON, Vue.js, Maven, Git, GitHub Actions, Kubernetes, Docker Compose, FluxCD, OIDC, Keycloak.
May 2022 - Dec 2022
8 monthsSecurity Consultant
JB10X
- Threat modeling of an existing application.
- Advising on its mitigation.
- Software development.
- Languages/technologies used: threat modeling, Spring Boot, Kotlin, Java.
Oct 2021 - Feb 2023
1 year 5 monthsTechnical Interview Consultant
Expertlead
- Conducted interviews focused on technology topics.
- Languages/technologies used: Java, Kotlin, various technical topics.
Oct 2021 - Jan 2023
1 year 4 monthsSenior Software Developer
Congstar
- Mobile app backend development for mobile service management for end customers.
- Ported a backend from Java/Spring to Kotlin/Quarkus.
- Operations support.
- Languages/technologies used: Kotlin, Java, Spring Boot, Quarkus, Microprofile, Jackson, MariaDB, JSON, XML, SOAP, Maven, Git, Splunk, Jenkins, Kubernetes, Helm.
Jul 2021 - Dec 2021
6 monthsSoftware Developer
LANCOM
- Integrated external identity providers with SAML and OIDC/OAuth2 into an existing SaaS solution for network management/IoT.
- Languages/technologies used: Kotlin, Spring Boot, microservices, Angular/TypeScript, Hibernate, Jackson, PostgreSQL, JSON, XML, SAML2, OIDC/OAuth2, Keycloak, Gradle, Git, Kubernetes, Helm.
Apr 2021 - Sep 2021
6 monthsPrincipal Developer Operations Center
German Edge Cloud
- Enhanced a cloud management solution.
- Languages/technologies used: Kotlin, Spring Boot, jOOQ, PostgreSQL, JSON, Jackson, REST, HAL, Kubernetes, Helm, Terraform, cloud-init, Maven, Git.
Mar 2021 - Jul 2021
5 monthsHead of Security
Comuny GmbH
- Ensured and advised on product and operational security during development.
- Analyzed and aligned with external security and product requirements (BSI, gematik).
- Languages/technologies used: 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 monthsConsultant
LANCOM
- Evaluated and ran feasibility study on technology options for authentication (SAML, OIDC/OAuth2) within a SaaS solution for network management/IoT.
- Languages/technologies used: Kotlin, Spring, microservices, Kubernetes, SAML 2.0, OIDC/OAuth2.
Mar 2019 - Feb 2021
2 yearsCTO / Fullstack-Entwickler
Comuny GmbH
- Product design and development for backend, frontend and mobile.
- Project and team management.
- Regular customer contact.
- Architecture and implementation of a SaaS solution for identification and authentication (OIDC/OAuth2) across multiple microservices.
- Interface design and implementation.
- Security analysis and architecture.
- CI/CD.
- A major challenge was building and implementing high data protection and security features.
- Languages/technologies used: 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 monthsProduct Owner / Fullstack-Entwickler
LANCOM
- Product Owner for two teams.
- Coordinated multiple Product Owners.
- Feature and UX design.
- Also did fullstack development of authentication features.
- Designed and developed the related interfaces and UI.
- Developed end-to-end tests for a SaaS solution in network management/IoT.
- Set up a new office location.
- Languages/technologies used: Java, Kotlin, Spring Boot, microservices, Angular/TypeScript, Hibernate, Jackson, PostgreSQL, JSON, REST, Swagger, Gradle, Jenkins, Pact, Git.
Aug 2015 - Sep 2017
2 years 2 monthsProduct Owner Wireless / Backend-Entwickler
Sophos
- Product Owner for 5 teams across 3 locations.
- Set up a new office in India.
- Feature and UX design.
- Fullstack development of individual features including interface design and development for a SaaS in network management/IoT.
- Languages/technologies used: Java, Spring, microservices, REST, OAuth2, MongoDB, Redis, AWS, Git, Gradle, Bitbucket, threat modeling.
Mar 2013 - Aug 2015
2 years 6 monthsSenior Software Entwickler & Architekt
Sophos
- Backend development and architecture of a multi-tenant cloud application as SaaS in network management/IoT.
- Migration of a cloud application from Ruby on Rails to Java/Spring.
- Interface design and development.
- Languages/technologies used: Java, Spring, microservices, REST, OAuth2, Ruby on Rails, MongoDB, Redis, Elasticsearch, AWS, Wi-Fi, Git, Gradle, Bitbucket.
Jan 2011 - Mar 2013
1 year 3 monthsRemote
Firmware Architekt System z
IBM
- Architecture and development of firmware components for IBM System z in the network area.
- Technical lead of a remote team in Moscow.
- Technologies used: C++, C, Bash, Linux, RPM, SCons, CVS.
Jan 2008 - Dec 2011
4 yearsTeamleiter / Firmware Entwickler
IBM
- Team leader in various departments for local and distributed teams.
- Architecture and development of firmware components.
- Developed a virtualized test environment.
- Evolved and maintained critical development systems.
- Technologies used: Groovy, Grails, Xen, C++, C, Bash, SAN, GPFS, Linux, Gradle, SCons, CVS.
Mar 2003 - Dec 2008
4 years 10 monthsFirmware Entwickler System z
IBM
- Architecture and development of firmware components for IBM System z in the network area.
- Technologies used: C++, C, Bash, Linux, RPM, SCons, CVS.
Nov 1999 - Sep 2000
11 monthsPraktikant
IBM Deutschland GmbH
- IBM Lotus Notes development.
- Supported interns.
- Department: GS LS Training.
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 as Product Owner
Languages
German
Native
English
Advanced
Education
Oct 2000 - Sep 2003
Berufsakademie Stuttgart
Diploma Engineer · Information Technology – Network and Software Engineering · Stuttgart, Germany · 1.3
Wilhelm-Busch-Gymnasium
High school diploma · Stadthagen, Germany · 1.7
Certifications & licenses
Certified Product Owner
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