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Callen-Lenz career site

Be Part of Our Future, Where Innovation Takes Flight.

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Who We Are

At Callen-Lenz, we are always expanding the limits of what is possible. We specialise in design, prototyping, development, advanced avionics, systems integration and manufacture of novel Uncrewed Aerial Systems (UAS). We are going through a period of rapid growth and development and are looking for key roles to assist with these changes. Callen-Lenz offers innovative and customer focused UAS solutions through our four key business strands; technical services, products, platforms and operational services. We are looking for individuals to help drive forward our expansion, placing you at forefront of UAS development in the UK.

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Benefits of Working For Us

At Callen-Lenz, we believe that investing in our employees is key to achieving success, which is why we prioritise their growth and development as well as providing an extensive benefit and reward proposition.

Our Values

At the heart of everything we do here at Callen-Lenz is a commitment to push boundaries within innovation, act with integrity, work collaboratively with purpose, and strive for excellence in every outcome. These values sit as the foundation of our culture and are the driving force for all our colleagues. 

Our Story

2007

Our Journey Began

Founded in 2007, our roots sit within aviation consultancy. Our early focus was the commissioning and management of uncrewed flight operations services. The founders and senior team brought a wealth of crewed aviation experience as aircrew, engineers, and innovators.

2010

Breakthrough Technology

In 2010, Callen-Lenz became a world leader in the breakthrough technology of drone-based photogrammetric data capture. This pioneering remote sensing service used in-house designed aircraft with to fly over forests and crops gathering 3D and multispectral data.

2013

SkyCircuits

In 2013, we acquired SkyCircuits. SkyCircuits develop high-integrity autopilots for use in crewed and uncrewed systems. Since 2013, the SC2 has architecturally evolved, leading to the design and manufacture of the SC3 in 2019, a more powerful and sophisticated autopilot.

2019

Koios

In 2019, Callen-Lenz started the design, development, and manufacture of our key UAS platform, Koios, in our Wiltshire-based UK facility. Koios is a medium VTOL UAS which offers fully autonomous operations providing strategic ISR capabilities with a tactical footprint.

2025

Our Journey Continues

Having grown our teams significantly to over 250 employees we continue to be the UK-based leader in design, development and testing of next generation UAS.

Hear From Our People

Don't just take our word for it, here what our talented colleagues have to say about their experiences.

  • I enjoy working at Callen-Lenz as it is a dynamic fast-paced work environment that complements my working style. In the engineering domain, there are plenty of challenging problems that we get to work through and given the small size of my team, this comes with a great deal of responsibility and ownership of the work that I get to produce.

    Software Engineer

  • Callen Lenz have supported my career development through regular reviews with my line manager, plenty of on-the-job training, paying for my professional registration and by enrolling me on an apprenticeship on Operational Management.

    Emma, Systems Engineering Team Lead

  • Being part of a fast-growing organisation means there’s constant momentum and fresh opportunities to contribute in meaningful ways. I get to collaborate with incredibly talented people who are passionate about what they do, and that energy is contagious

    Liv, People Advisor

  • I would recommend Callen-Lenz (and have done) to others because of the great work that we do and the satisfaction that it brings, along with having a strong and positive company culture.

    Will, Senior Air Vehicle Design Engineer

Find out more about what to expect during our interview processes here.


Interview Process Insight

Armed Forces Covenant

  • At Callen Lenz, we are proud to support the Armed Forces through our commitment to the Armed Forces Covenant and as recipients of the Ministry of Defence Employer Recognition Scheme Bronze Award. We actively work to provide meaningful opportunities for veterans, service leavers, and reservists by partnering with the British Forces Resettlement Services, hosting career insight days, and offering flexible support for reservists balancing military and civilian careers.

    Our Pledge

    Click on the link above to view our pledge in full.

Where to find us

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