Nils Bokermann
Senior Architect
Experience
Senior Architect
Seghorn GmbH
- Independent builds of components through smart interface design
- Ensuring availability with a decoupled software architecture
- Java implementation
- Technical leadership of developers through code reviews
Senior Consultant
Seghorn GmbH
- Architecture assessment through interviews
- Development of a target architecture
- Migration plan
Senior Consultant
Systemum GmbH & Co.KG
- Improving traceability of requirements by integrating Jenkins and JUnit applications with the central ticket system
Senior Architect
Systemum GmbH & Co.KG
- Analysis of existing documentation
- Creation of an architecture concept
Developer/DevOps-Consultant
Verband der Vereine Creditreform
- Development in Java/Spring Boot
- Further development of the CI/CD platform
- Kubernetes deployment
- Coaching
IT Consultant
Verband der Vereine Creditreform
- Architecture analysis
- Further development of the CI/CD platform
- Kubernetes deployment
- Kubernetes security
- Coaching
Senior Java Developer
Systemum GmbH & Co. KG
- Development of Java components
- Documentation of the current architecture
- Creation of architecture proposals for the target architecture
- Further development of the CI/CD platform
- Migration from Jenkins to GitLab CI
Senior Java Developer
anderScore GmbH
- Development of Java components
- Design and development of Vaadin UIs
- REST services
- Requirements analysis
- Reverse engineering
Senior Consultant
Systemum GmbH & Co. KG
- Gathering of core requirements
- Analysis of the existing system architecture
- Design of the target architecture
- Design of the migration strategy
- Planning of prototype implementation
Senior Java Developer
E.ON Business Services GmbH
- Implementation in Java and Spring
- Introduction of a behaviour-driven test system
Java Backend Developer
Valtech GmbH
- Implementation in Java and Spring
Senior JEE Developer
Systemum GmbH & Co. KG
- Implementation in JEE (EJB3.1)
- Administration JBoss 7.2 (Redhat EAP 6.4)
IT Security Consultant
Volkswagen AG
- Led a workshop on IPv6 security in vehicles
Product Owner (Technical Part)
Volkswagen AG
- Software architecture
- Quality assurance management
- Test management
- Interface design
- Requirements analysis
- Process design
Senior Java Developer
EWE TEL GmbH
- Implementation
- Testing
IT Consultant
Versatel Deutschland GmbH
- Documentation
- Reverse-Engineering PHP
- Reverse-Engineering PostgreSQL
Developer
EMDS AG
- Implementation in Orchestra
Senior C Developer
PrimeForce
- Implementation
- Solution description
Senior Java Developer
Volkswagen
- Coordination of software development
- Software architecture
- Implementation of J2EE on IBM WebSphere
- Extension of Apache httpd module (mod_ssl, mod_auth_ldap)
Senior System Analyst Billing
Telefónica O2 Germany GmbH & Co. OHG
Development and design of a wholesale billing solution for VoIP services
Design of a service interface between the billing system and the order management system
Through the service interface between the order management and billing, full automation of billing is sought. This automation minimizes manual transfers, reducing errors and improving performance. This results in a double quality improvement, as the need for retroactive changes after the billing run is minimized.
System Analyst Billing
Telefónica Deutschland GmbH
Set up and accepted a billing solution for LLU (ADSL) resale products
Designed and implemented a billing interface for LLU (ADSL) billing
Switched from a proprietary billing solution to a flexible standard software, resulting in more predictable operations due to clear documentation and the option to rely on external experts.
System Developer Fulfillment
Telefónica Deutschland GmbH
Designed and developed a multi-tier geoinformation system
Designed and developed an SOA solution for number and SIP provisioning
Developed a backend to control SIP account features
Extended the number provisioning system to assign SIP accounts, adapted the workflow engine, and implemented asynchronous transaction control
Refactored and restructured a geoinformation system into front-end, business logic, and persistence layers
System Developer
Fox-Lightware GmbH
Ported a database retrieval software from OS/2 to MS Windows
Contributed to the open-source telephony solution OpenH323GK
Designed and developed a VoIP switching solution per ITU-T standard H.323
Created a slim, tailored VoIP access solution to distribute load from the central voice switch to a cluster. Handled client authentication and authorization in this software while keeping routing on the specialized voice switch. Decommissioned this solution in early 2011.
System Administrator
IOK Internet Services
Developed a custom web shop in Perl
Administered LAMP servers
Configured Cisco routers
Planned and monitored backups
Automated the installation of virtual web servers, improving quality, reducing manual effort, increasing productivity, and boosting customer satisfaction by preventing manual input errors from causing partial setups seen as system failures.
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Information Technology (14 years), Telecommunication (10.5 years), Banking and Finance (3 years), Professional Services (2.5 years), and Automotive (2.5 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (25 years), Product Development (12 years), Finance (3 years), Quality Assurance (2.5 years), and Strategy (0.5 years).
Summary
Nils Bokermann is an experienced software architect and IT consultant with over 25 years of project experience in developing distributed systems. His technical focus is on Java EE and Spring Boot, complemented by deep expertise in application security, CI/CD, X.509 infrastructures, and interface design with OpenAPI. In numerous projects for clients in telecommunications, the financial sector, industry, and the public sector, he was responsible for the architecture, implementation, and integration of complex systems.
Alongside his hands-on work, he is active as a conference speaker and technical author, and holds certifications in PRINCE2, Scrum, and requirements engineering.
Skills
- Software Architecture (5 Years)
- Application Security (15 Years)
- X.509 Infrastructures (15 Years)
- Interface Design (20 Years)
- Continuous Integration (10 Years)
- Specification By Example (Behavior Driven Design)
- Software Development (25 Years)
Languages
Education
Bielefeld University
Diploma in Physical Chemistry · Chemistry · Bielefeld, Germany · good
Certifications & licenses
Certified Scrum Product Owner
IREB® Certified Professional for Requirements Engineering
PRINCE2
Pilot License PPL(A)
Profile
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