Hello, I’m Lewis James Carruthers. I’m a CAD/BIM specialist with extensive experience supporting mechanical services and HVAC systems in GMP-regulated pharmaceutical environments. I’ve led drawing offices, coordinated ducting and piping layouts, and maintained large technical drawing libraries to ensure accuracy and compliance across projects. I excel at interpreting HVAC schematics, updating as-built drawings, and collaborating with engineering and facilities teams to deliver precise documentation and efficient workflows. I’m now looking to transition into a full HVAC Draftsperson role, bringing deep system knowledge, hands-on problem solving, and a proven track record of delivering accurate drawings and model updates that support real-world operations and capital projects.…

Lewis James Carruthers

Hello, I’m Lewis James Carruthers. I’m a CAD/BIM specialist with extensive experience supporting mechanical services and HVAC systems in GMP-regulated pharmaceutical environments. I’ve led drawing offices, coordinated ducting and piping layouts, and maintained large technical drawing libraries to ensure accuracy and compliance across projects. I excel at interpreting HVAC schematics, updating as-built drawings, and collaborating with engineering and facilities teams to deliver precise documentation and efficient workflows. I’m now looking to transition into a full HVAC Draftsperson role, bringing deep system knowledge, hands-on problem solving, and a proven track record of delivering accurate drawings and model updates that support real-world operations and capital projects.…

Available to hire

Hello, I’m Lewis James Carruthers. I’m a CAD/BIM specialist with extensive experience supporting mechanical services and HVAC systems in GMP-regulated pharmaceutical environments. I’ve led drawing offices, coordinated ducting and piping layouts, and maintained large technical drawing libraries to ensure accuracy and compliance across projects. I excel at interpreting HVAC schematics, updating as-built drawings, and collaborating with engineering and facilities teams to deliver precise documentation and efficient workflows.

I’m now looking to transition into a full HVAC Draftsperson role, bringing deep system knowledge, hands-on problem solving, and a proven track record of delivering accurate drawings and model updates that support real-world operations and capital projects.

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Language

English
Fluent

Work Experience

Lead Draftsman at CSL Behring
July 1, 2024 - Present
Managed and improved drawing standards across civil, mechanical, structural, electrical, pneumatic, P&IDs, WFI, and Steam; oversaw AutoCAD and Revit for 2D/3D modelling and BIM applications; developed and implemented improvements to CAD/BIM systems to ensure accuracy, efficiency and pharmaceutical compliance; collaborated across departments to coordinate drawing requirements; reduced drawing approval times by 20%; led system upgrades to improve integration across drawing categories and team collaboration.
Designer/Toolmaker at Steel Post & Rail (Australia)
March 1, 2013 - September 1, 2014
Converted customer inquiries into orders by providing 3D design options that met and exceeded expectations; optimized material usage reducing waste by 15%; contributed to assembly of large-scale projects ensuring adherence to schedules and structural standards.
Toolmaker at Mold Systems
June 1, 2012 - December 1, 2012
Created and refined tooling for manufacturing; supported production runs and contributed to design-for-manufacture improvements.
Toolmaker at Tallent Automotive Ltd (part of Gestamp Automocion)
June 1, 2010 - February 1, 2012
Produced precision tooling for automotive components; collaborated with design and production teams to optimize tooling processes; contributed to continuous improvement initiatives.
Apprentice Toolmaker at Tallent Automotive Ltd (part of Gestamp Automocion)
September 1, 2006 - June 1, 2010
Learned core toolmaking skills, built and maintained tools for manufacturing, supported projects in automotive production; progressed through apprenticeship.
Drawing Office Manager at GlaxoSmithKline
February 1, 2017 - July 31, 2024
Responsible for over 20,000 technical drawings across multiple disciplines; oversaw the drawing approval process, release timelines, and quality control; implemented AutoCAD, Revit, and Inventor to ensure high-quality designs; contributed to CAD/BIM system improvements and compliance with pharma standards; maintained HVAC/as-built documentation and supported shutdowns and upgrades with accurate drawings.
Process Engineer at Labone Castleside
October 1, 2016 - February 28, 2017
Implemented tooling design reviews to improve first-time tool run success; reduced tooling-related production delays; helped develop a more organized drawing management system to reduce retrieval times; supported tooling and process improvements.
CAD Support Team at Arlington Automotive
January 1, 2016 - September 30, 2016
Provided timely CAD support to launch new products; reduced lead times by streamlining communications with suppliers and customers; contributed to cross-functional process improvements to speed up CAD design submissions.
Toolmaker at Mold Systems – UK
June 1, 2012 - December 31, 2012
Toolmaker contributing to tooling development and precision manufacturing processes.
Apprentice Toolmaker at Tallent Automotive Ltd (part of Gestamp Automocion) – UK
September 1, 2006 - June 30, 2010
Apprentice toolmaker gaining foundational experience in tooling, fabrication, and manufacturing processes.

Education

Higher National Certificate: Mechanical Engineering at University of Teeside - England
May 1, 2008 - May 1, 2010
BTEC: Manufacturing Engineering at Darlington Technology College - England
April 1, 2006 - May 1, 2008
High School Diploma at Woodham CTC - England
January 11, 2030 - April 1, 2006
Higher National Certificate: Mechanical Engineering at University of Teeside - England
January 1, 2008 - December 31, 2010
BTEC: Manufacturing Engineering at Darlington Technology College - England
January 1, 2006 - December 31, 2008
High School Diploma at Woodham CTC - England
January 11, 2030 - April 1, 2006
Higher National Certificate: Mechanical Engineering at University of Teesside - England
January 11, 2030 - March 31, 2026
BTEC: Manufacturing Engineering at Darlington Technology College – England
January 11, 2030 - March 31, 2026
High School Diploma at Woodham CTC - England
January 11, 2030 - March 31, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Manufacturing, Life Sciences, Real Estate & Construction, Professional Services, Transportation & Logistics, Healthcare
    paper Custom 72V E‑Bike Battery System & 3D‑Printed Frame‑Integrated Enclosure

    Custom 72V E‑Bike Battery & 3D‑Printed Frame‑Integrated Enclosure
    I designed and built a custom high‑voltage e‑bike battery system to overcome the limited internal space of my mountain bike frame. The project combined 3D scanning, CAD modelling, iterative 3D printing, and hands‑on battery assembly to create a precision‑fit 72V pack tailored exactly to the bike’s geometry.
    Frame Scan & CAD Modelling
    Using an iPhone LiDAR scanning app, I captured an accurate 3D model of the bike frame and imported it into AutoCAD. From this, I created a clean digital reference and mapped out a battery layout that preserved full rear‑shock movement. The optimised design accommodated 60 cylindrical cells, enabling a 20s3p configuration suitable for a 72V system.
    Custom Enclosure Design
    I designed a multi‑piece enclosure shaped precisely to the scanned frame triangle. Several 3D‑printed prototypes were produced to refine mounting points, structural rigidity, cable routing, and suspension clearance. The final prototype achieved a perfect fit with full range‑of‑motion clearance.
    Component Selection & Fitment
    I sourced high‑quality P50B 2700mAh lithium‑ion cells and all required assembly materials. Honeycomb cell holders were used to maximise packing efficiency and maintain consistent spacing. A full dry‑fit confirmed the 60‑cell array aligned with the enclosure and frame geometry.
    Battery Assembly
    The pack was assembled in a 20s3p layout, welded and interconnected with appropriate insulation and structural reinforcement. A 150A Daly BMS was integrated to manage charge, discharge, and cell balancing. The completed pack fit cleanly into the final enclosure with secure mounting and tidy cable routing.
    Outcome
    The finished system is a custom‑engineered 72V battery pack that:
    Fits the frame with millimetre‑level precision
    Maintains full suspension travel
    Provides increased power and range
    Demonstrates end‑to‑end capability across digital design, prototyping, and fabrication
    This project highlights my ability to combine digital engineering tools with practical hands‑on execution, delivering a tailored solution to a real‑world design constraint