48°48'N 009°31'E

Precision in the Deep

Offshore Operations · UXO Specialist · Project Management

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Interdisciplinary expert in maritime exploration with a career built on lead roles in offshore and nearshore survey missions. I bridge the gap between high-level operational planning and hands-on technical R&D.

Offshore Lead

ROV-based & uncrewed survey systems.

UXO Certified

Authorized under §7 & §20 SprengG.

Innovation Driven

Expert in ROV fiber-optic upgrades and custom subsea engineering.

Beyond the Standard

Technical Upskilling & R&D

During a dedicated 2023 R&D phase, I fused traditional maritime surveying with cutting-edge automation and digital fabrication.

Advanced Engineering

3D modeling (Autodesk Fusion 360) and rapid prototyping for functional subsea parts.

Software & AI

Custom Python scripts for AIS data acquisition and AI-assisted concept development (Stable Diffusion).

Fabrication

Operation and workflow optimization for CNC laser and milling systems.

Created Software

Creator and developer of WorkspaceGridder — a desktop workspace management tool built from the ground up to streamline multi-monitor and multi-window workflows.

www.workspacegridder.com

Professional Journey

Present

Freelance — UXOGEO Christian Cajar

Operational lead for offshore missions, ROV piloting for 3D inspection, and conversion of analog ROV systems to fiber-optic communication.

2018 – 2022

Head of Department

Full personnel responsibility for onshore/offshore exploration. Managed geophysical and hydrographic projects from tender to final data validation.

2015 – 2018

Geophysicist & Offshore Surveyor

Specialized in underwater positioning (USBL/DVL) for divers and ROVs.

2013 – 2015

Managing Director — Boatshed Ltd

Leadership of a manufacturing team of five, overseeing production and quality control.

Technical Toolkit

Software

Survey Software

QINSyQimeraSonarWizEIVAOasis MontajGlobal Mapper
Disciplines

Offshore Disciplines

Hydrography (MBES, SSS)Geophysics (Magneto, SBP)Geotechnical (CPT, Vibrocorer)
Code

Programming & Hardware

PythonMATLABArduino IDERaspberry PiESP32RS232 / RS485
Design

Engineering & Design

Autodesk Fusion 360BlenderAdobe Creative Suite

Education & Qualifications

Academic Foundation

M.Sc.
Surveying, Land- & Environmental Management University of Exeter, UK
B.Sc.
Environmental-Resource Management University of Plymouth, UK

Certifications

§20 SprengG
Technical Supervisor for UXO Clearance

Marine Licenses

SBF
Recreational Craft License — Inland & Sea

The Maker Spirit

Technical craftsmanship isn't just a job — it's a passion. From car mechanics and sailing to CNC milling and GFRP electronics, I build and optimize systems in all environments.

Languages

German Native English Fluent Danish Greek Latin