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Westerkirk

Mechanical Systems Engineer

Calgary, AB, Canada
Mississauga, ON, Canada

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Job details

Apply by: Nov 20, 2026
Posting language: English
Posted: Oct 30, 2026

Original job description

De Havilland Aircraft of Canada Limited (DHC) is a storied name in the aerospace industry, recognized worldwide for its pioneering contributions to aviation and its unwavering commitment to quality, innovation, and reliability. Headquartered in Calgary, AB, DHC currently has approximately 2,400 employees across British Columbia, Alberta and Ontario, as well as in markets and distribution hubs world-wide.

Established in 1928, De Havilland Canada has a rich history marked by the development of some of the most iconic and versatile aircraft ever built. These aircraft have served a variety of roles - from bush flying to commercial aviation - and are celebrated for their rugged durability, operational versatility, and excellence in performance.

Over the decades, De Havilland Canada has evolved to meet the changing needs of the aviation industry. Today, we are more than just an aircraft manufacturer; we are a comprehensive aerospace company with capabilities that span design, production, maintenance, repair, and overhaul (MRO) services. Our operations are supported by a team of skilled engineers, technicians, and industry professionals who are dedicated to upholding the highest standards of craftsmanship and innovation.

Profile

We have positions available in our Calgary, AB and Mississauga, ON offices for Mechanical Systems Engineers responsible for the development of engineering data packages to support the development and certification of various aircraft modifications. This includes engineering design, technical analysis, and airworthiness certification activities.

Duties & Responsibilities

Support in service aircraft by creating and reviewing engineering modification packages based on customer change requests
Support aircraft test programs including writing Test Definition Sheets, aircraft equipment integration, aircraft test witnessing and subsequent test report development and review
Prepare and define Technical Requirement Documents and Engineering Technical Assessments
Evaluate vendor technical proposals and internal Program Change Requests.
Prepare Design Change Proposals.
Review and approve vendor requirement specifications, design documentation including engineering drawings, modification summary packages and vendor equipment qualification reports.
Prepare technical reports to show compliance to the applicable certification requirements. Ensure airworthiness is maintained per required regulations
Technically manage supply chain relationships by supporting technical meetings and writing/receiving Engineering Coordination Memos.
Support aircraft production including problem solving and snag resolution.
Technically supervise/coordinate the work and the mentoring of less experienced Engineers in the department.

Education and Professional Qualifications

Bachelors or Masters Degree in Aerospace or Electrical Engineering
Current or candidate-for Aircraft Certification Delegate AP/DAR preferred

Experience

5+ years experience in the design, installation, integration, testing, and certification of aircraft mechanical systems modifications.
5+ years experience supporting airworthiness certification under a TCCA framework working knowledge of system design, test and certification requirements and advisory material.
Discipline preferred experience in aircraft Hydro-Mechanical Systems, Landing Gear Systems, Flight Controls Systems.
Able to review the merits of different proposals for components, subsystems and systems with regard to function, weight, reliability and safety and ensure that they are compatible within aircraft mechanical systems.
Knowledgeable with ARP4754 (Guidelines for Development of Civil Aircraft and Systems), ARP4761 (Guidelines and Methods for Conducting The Safety Assessment Process on Civil Airborne Systems and Equipment) and Electrical Wiring Interconnect Systems (EWIS) is an asset.
Knowledgeable with civil airworthiness FAR Part 23 & 25 regulations and advisory material.
Knowledgeable with industry advisory material including SAE, RTCA and ARP documents for applicable TCCA, EASA and FAA certification requirements. Familiar with and have a working relationship with TCCA, EASA or FAA.

Skills

Intermediate user knowledge of MS Office Suite (MS Word, Excel, and PowerPoint)
Proven experience in the design and certification of aircraft modifications
Effective technical writing skills
Support continuous improvement initiatives
Effective time management
Ability to estimate manage work, adjust priorities to suit demands, track project performance, and report progress and issues

Why work at De Havilland?

De Havilland Canada is a Canadian-owned and operated aircraft manufacturer dedicated to providing rewarding opportunities in a diverse and welcoming workplace.

Work with a team that makes a true difference in the world-making it possible for people to travel around the globe efficiently, comfortably and safely.
We’ve manufactured over 5,600 aircraft including the most advanced turboprop in the air today. Our experience and expertise in constructing the highest performing aircraft in the industry is second to none.
Our state-of-the-art manufacturing facilities are dynamic workplaces led by teams that support and encourage all employees.
With a passionate team of innovators and a global network of support, De Havilland Canada proudly carries on it’s tradition as a leader in aerospace.

In addition to plenty of opportunities for career growth in a stimulating work environment, De Havilland Canada offers:

Competitive wages
Paid vacation
Extended health benefits (medical, dental, vision, paramedical)
Life insurance
RRSP/DPSP Plan
Employee and family assistance program

At De Havilland Aircraft of Canada (DHC), we are committed to protecting our people, customers, shareholders and the public through Health & Safety Excellence. As such, it is expected that all employees maintain strict adherence to Health & Safety Policies and to perform key physical tasks of the position described in the job description and interview process. This may include but is not limited to the ability to work in a variety of environmental conditions including temperature extremes, confined spaces, working at heights and with or around chemicals. Employees are expected to adhere to the use of personal protective equipment (PPE) when at work which must include but is not limited to the ability to maintain a positive fit test when mask use is required.

At De Havilland Canada, we aim to be inclusive and diverse and provide equal opportunity for employment. All qualified applicants, regardless of gender, age, race, religion, sexual orientation, and disability, are encouraged to apply. De Havilland will accommodate the needs of applicants with disabilities throughout all stages of the selection process. If you need accommodation during the recruitment process, please advise your Talent Acquisition representative. Information relating to the need for accommodation and accommodation measures will be addressed confidentially.

Any offer of employment is conditional on the completion of positive and satisfactory background checks, which may include, proof that you are legally entitled to work in Canada, professional references, verification of employment history, verification of educational background and criminal background checks.

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More about this job

Responsibilities

The Mechanical Systems Engineer will develop engineering data packages for aircraft modifications and support airworthiness certification activities. They will also manage technical supply chain relationships, support aircraft production, and mentor less experienced engineers.

Requirements

Candidates must hold a Bachelor or Master degree in Aerospace or Electrical Engineering and have at least 5 years of experience in aircraft mechanical systems design and certification. Proficiency in TCCA, EASA, or FAA airworthiness regulations and advisory material is required.

Skills

Mechanical systems design
Airworthiness certification
Technical writing
Engineering modification packages
Aircraft test programs
Supply chain management
Problem solving
Mentoring
Hydro-mechanical systems
Landing gear systems
Flight controls systems
MS Office Suite
Project management
Regulatory compliance

Benefits

Paid vacation
Extended health benefits
Medical
Dental
Vision
Paramedical
Life insurance
RRSP/DPSP Plan
Employee and family assistance program

Visa sponsorship

Not detected in the job text

Keywords

Aerospace
Mechanical Systems
Airworthiness
Certification
TCCA
EASA
FAA
ARP4754
ARP4761
EWIS
Design Change Proposals
Engineering Drawings
Technical Assessments
Aircraft Modification
Hydro-Mechanical Systems
Landing Gear
Flight Controls
Supply Chain
Engineering Coordination Memos
MS Office
Project Performance
Safety Assessment
Civil Aircraft
Manufacturing
MRO Services

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