DERK-JAN BOLKS
Hardenberg
Summary
Experienced Mechanical Engineer with 30+ years in compressor technology and service. Skilled at leading international teams, improving manufacturing processes, and solving complex technical problems. Strong track record in lean manufacturing, root cause analysis, and service center optimization that reduces costs and improves equipment reliability.
Overview
42
42
years of professional experience
1
1
Certification
Work History
Senior Specialist Engineer – Compressors
Siemens Energy
04.2019 - Current
- Lead technical support and troubleshooting for global compressor service centers
- Conduct inspections, repairs, and root cause analysis worldwide
- Manage internal audits and certification programs
- Develop training materials for international teams
- Support senior management with service operations improvements
Manager, Repair & Spare Parts Engineering
Siemens
02.2010 - 04.2019
- Managed repair and spare parts teams local
- Ensured compliance with regulatory and customer standards
- Coordinated workshops and technical support across regions
Group Leader, Repair Engineering
Siemens
09.2007 - 02.2010
- Oversaw order fulfillment and quality assurance in repair operations
- Provided technical support to project teams
- Supported safety and quality improvement initiatives
Group Leader, Technical Administration & Planning
Siemens
11.2001 - 09.2007
- Led supply chain management and process improvements
- Developed team training and optimized workflows
Machining Manager
Demag Delaval
06.2000 - 11.2001
- Led machining department
- Improved manufacturing efficiency with lean methods
- Managed budgeting and team performance
Group Leader, Manufacturing Engineering & Tool Design
Delaval Stork
10.1994 - 06.2000
- Directed engineering teams to improve workflows and production quality
- Implemented CAD/CAM and process automation
Tool Design Engineer
Delaval Stork
11.1992 - 10.1994
- Designed tools for efficient compressor assembly and disassembly
Fabrication Technologist
Delaval Stork
06.1991 - 11.1992
- Developed and standardized manufacturing processes
Corporal First Class, Maintenance Mechanic – Army Tanks
Dutch Armed Forces
05.1990 - 06.1991
- Maintained and repaired tank systems
- Trained junior mechanics
Production Employee
Wavin Netherlands
08.1983 - 06.1990
- Ensured quality and efficiency in production lines
Education
B.Sc. (Dipl. Ing.) - Mechanical Engineering (Precision Technology)
Stenden University
Emmen01.1990
Secondary Vocational Technical Education - Mechanical Engineering
Almelo
01.1984
Pre-Vocational Technical Secondary Education - Mechanical Engineering
Hardenberg
01.1980
Skills
- Manufacturing process optimization
- CAD/CAM basics & tool design
- Lean manufacturing & Six Sigma principles
- Automation & quality management
- Team leadership & mentoring
- Budget & resource planning
- International operations coordination
- SAP (Atlas)
- Teamcenter (GloBus)
- Technical communication
- Emergency response
- Analytical thinking
- Compressor troubleshooting & root cause analysis
Accomplishments
- Improved parts delivery and service workflows for faster turnaround
- Led certification for 30+ global service centers in 10 years
- Developed training programs for engineers worldwide
- Implemented lean manufacturing projects to cut costs and boost quality
- Reduced supply chain lead times through optimized processes
Certification
- Advanced Compressor & Safety Certifications (2023)
- Low & High-Speed Balancing, Hoffman
- Management Essentials, Siemens Learning Campus (2017–18)
- Management Development, Siemens (2014)
- VCA VOL Safety Certification (2015)
- API Rotor Repair Certification, API Institute (2008)
- SAP & Teamcenter Training (2010–11)
LANGUAGES
Dutch: Native
English: Professional working proficiency
German: Professional working proficiency
Hobbies and Interests
New technologies in engineering, International business development, Industry trends & continuous learning
Timeline
Senior Specialist Engineer – Compressors
Siemens Energy
04.2019 - Current
Manager, Repair & Spare Parts Engineering
Siemens
02.2010 - 04.2019
Group Leader, Repair Engineering
Siemens
09.2007 - 02.2010
Group Leader, Technical Administration & Planning
Siemens
11.2001 - 09.2007
Machining Manager
Demag Delaval
06.2000 - 11.2001
Group Leader, Manufacturing Engineering & Tool Design
Delaval Stork
10.1994 - 06.2000
Tool Design Engineer
Delaval Stork
11.1992 - 10.1994
Fabrication Technologist
Delaval Stork
06.1991 - 11.1992
Corporal First Class, Maintenance Mechanic – Army Tanks
Dutch Armed Forces
05.1990 - 06.1991
Production Employee
Wavin Netherlands
08.1983 - 06.1990
Secondary Vocational Technical Education - Mechanical Engineering
Almelo
Pre-Vocational Technical Secondary Education - Mechanical Engineering
Hardenberg
B.Sc. (Dipl. Ing.) - Mechanical Engineering (Precision Technology)
Stenden University
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