Nils B.-Senior Architect
Check rate
Experience
Senior Architect
Seghorn GmbH
- Independent builds of components through intelligent interface design
- Ensuring availability through 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
- Improved requirements traceability by connecting Jenkins and jUnit applications to 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
- Java/Spring Boot development
- Further development of the CI/CD platform
- Kubernetes deployment
- Coaching
IT-Consultant
Verband der Vereine Creditreform
- Architecture analysis
- Further development of CI/CD platform
- Kubernetes deployment
- Kubernetes security
- Coaching
Senior Java Developer
Systemum GmbH & Co. KG
- Development of Java components
- Documentation of current architecture
- Creation of architecture proposals for the target architecture
- Further development of CI/CD platform
- Migration from Jenkins to Gitlab-CI
Senior Java Developer
anderScore GmbH
- Development of Java components
- Design and development of Vaadin interfaces
- REST services
- Requirements analysis
- Reverse engineering
Senior Consultant
Systemum GmbH & Co. KG
- Gathering of core requirements
- Analysis of the existing system architecture
- Design of target architecture
- Design of migration strategy
- Planning of prototype implementation
Senior Java Developer
E.ON Business Services GmbH
- Implementation in Java and Spring
- Introduction of a Behaviour-Driven Testing System
Java Backend Developer
Valtech GmbH
- Implementation in Java and Spring
Senior JEE Developer
Systemum GmbH & Co. KG
- Implementation in JEE (EJB3.1)
- Administration of 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
- QA 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 modules (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 solutions
Design of a service interface between the billing system and the order management system
The service interface between order management and billing is intended to achieve full billing automation. This automation minimizes manual transfers, which both reduces the risk of errors and improves performance. This results in a double improvement in quality, as the need for retroactive changes after the billing run is minimized.
Billing Systems Analyst
Telefónica Deutschland GmbH
Design and acceptance of a billing solution for LLU (ADSL) resale products
Design and implementation of a billing interface for LLU (ADSL) billing
Migration from a proprietary billing solution to flexible standard software. This made operational effort easier to plan, as clear operating documentation was available, and also enabled the use of external specialists.
Fulfillment Systems Developer
Telefónica Deutschland GmbH
Design and development of a multi-tier geographic information system
Design and development of an SOA solution for telephone number and SIP provisioning
Development of a backend for controlling features of SIP accounts
Expansion of the telephone number provisioning system to include SIP account allocation. Adaptation of the workflow engine and implementation of asynchronous transaction control.
Refactoring and restructuring of a geographic information system into frontend, business logic, and persistence layers.
Systems Developer
Fox-Lightware GmbH
Porting of database retrieval software from OS/2 to MS Windows
Participation in the Open-Source telephony solution OpenH323GK
Design and development of a VoIP switching solution according to ITU-T Standard H.323
By implementing a lean, needs-based solution in the area of VoIP access, the load was distributed from the central voice switch to a cluster, as client authentication and authorization were handled in the software developed here, while routing continued to be performed by the specialized voice switch. This solution was decommissioned at the beginning of 2011.
Systems Administrator
IOK Internet Services
Development of a custom online shop in Perl
Administration of LAMP servers
Router configuration (Cisco)
Design and monitoring of backups
Automation of the installation of virtual web servers. This improved quality and reduced manual effort, increasing productivity and customer satisfaction, as manual input errors no longer led to partial configurations that customers perceived not as misconfigurations, but as operational errors.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Telecommunication, Banking and Finance, Professional Services, and Automotive.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Finance, Quality Assurance, and Strategy.
Summary
Nils Bokermann is an experienced software architect and IT consultant with over 25 years of project experience in developing distributed systems. His technological focus is on Java EE and Spring Boot, complemented by in-depth knowledge of application security, CI/CD, X.509 infrastructures, and interface design with OpenAPI. In numerous projects for clients in telecommunications, finance, industry, and the public sector, he was responsible for the architecture, implementation, and integration of complex systems.
In addition to his practical 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
Universität Bielefeld
Diplom, physikalische Chemie · Chemie · Bielefeld, Germany · gut
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Nils is based in Bielefeld, Germany.
Nils speaks the following languages: German (Native), English (Advanced).
Nils has at least 25 years of experience. During this time, Nils has worked in at least 17 different roles and for 17 different companies. The average length of individual experience is 1 year and 1 month. Note that Nils may not have shared all experience and actually has more experience.
Based on recent experience, Nils would be well-suited for roles such as: Senior Architect, Senior Consultant, Developer/DevOps Consultant.
Nils's most recent position is Senior Architect at Seghorn GmbH.
In recent years, Nils has worked for Seghorn GmbH, Systemum GmbH & Co.KG, and Verband der Vereine Creditreform.
Nils is most experienced in industries like Information Technology, Telecommunication, and Banking and Finance. Nils also has some experience in Automotive, Professional Services, and Energy.
Nils is most experienced in business areas like Information Technology, Product Development, and Finance. Nils also has some experience in Quality Assurance and Strategy.
Nils has recently worked in industries like Information Technology and Banking and Finance.
Nils has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Nils attended Universität Bielefeld for Chemie.
Nils has 4 certificates. Among them, these include: Certified Scrum Product Owner, IREB® Certified Professional for Requirements Engineering, and PRINCE2.
The availability of Nils needs to be confirmed.
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Calculated based on our freelancers’ daily rates as of 27 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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