Silentium Defence reports more than 100 employees worldwide. Its business combines passive-radar equipment, space-surveillance data and new US, UK and European operations.
Silentium Defence is an Australian sensing company expanding its commercial organisation across North America, the UK and Europe. Its business combines passive-radar hardware with planning software and a space-surveillance data offering. Public records identify Australian procurement work, a research-to-company origin and a workforce exceeding 100 people worldwide in 2026.
The company is useful to follow as an example of a specialist sensor supplier building several routes to market. A defense buyer may purchase equipment within a wider programme, while a space customer may seek information delivered as a service. Regional leadership appointments then add a third dimension: the local organisation needed to turn a technical offering into supported customer delivery.
The corporate overview identifies James Palmer as global chief executive and Simon Palumbo as a co-founder. The business dates its establishment to 2017. Its contact directory lists offices at Gepps Cross and Wingfield in South Australia, both within Adelaide's wider industrial area.
Silentium uses “Defence” in its Australian branding and “Defense” for its American business. The named US operation is part of the company's international expansion. Readers researching financial or ownership information should retain the full entity name: other businesses using Silentium in their names should not be assumed to share this radar company's accounts or investors.
The UK company register records Silentium Defence Ltd, company number 16089548, as incorporated in November 2024, with a registered office in Chester. That legal establishment predates the July 2026 regional leadership announcement. A registered-office record establishes the entity; it does not measure the size of its customer-facing team.
The reviewed corporate material does not provide a complete current shareholder register. The profile therefore identifies the Australian private-company business without inventing a controlling parent or attributing an unrelated public listing. Its government research origins also do not establish that the company remains government-owned.
The division between global and regional leadership is commercially relevant. A supplier or prospective partner should establish whether the proposed relationship concerns Australian product development, local delivery support or a regional customer programme. Those responsibilities can require different commitments even where the underlying product brand is the same.
| Measure | Verified disclosure | Scope |
|---|---|---|
| Employees | More than 100 worldwide | Company announcement, 22 July 2026 |
| Annual turnover | Not verified | No estimate derived from programme budgets |
| Australian locations | Gepps Cross and Wingfield | Current company contact page |
| US headquarters | Apex, North Carolina | Establishment announced May 2026 |
| UK and European leadership | Ian Muldowney appointed regional CEO | Announced July 2026 |
The July leadership announcement explicitly describes the workforce as exceeding 100 worldwide. This provides a dated company-wide measure, rather than a count of one office or only technical employees. It remains a lower bound, so the directory shows “more than 100” rather than an exact 100.
The company had also published a June workforce update describing recruitment across engineering, product, programme-management and corporate functions. Vacancies show the functions it was seeking to strengthen, but they do not establish how many roles were subsequently filled.
No current annual revenue figure was verified in this review. That limits financial comparisons with listed radar manufacturers. A contract announcement can establish a specific commercial relationship, but combining historical awards or allocating a share of a national budget would not produce a defensible turnover estimate.
The Defence Science and Technology Group's April 2017 account describes Palmer and Palumbo participating in CSIRO's ON Accelerate programme under the Silentium Defence team name. The purpose was to assess whether their research could become a marketable product, including direct work on understanding customers and communicating its value.
That history is relevant to the company's business development. It describes a transition from a research capability to an offering that a buyer can specify and purchase. Technical expertise supplied the starting point, while customer understanding helped define how the technology could become a business.
Raytheon Australia's Capability Plus profile supplies a second commercial reference. It discusses training, certification and business processes around delivery. Its older workforce figure is not used as the current employee count, but the account remains useful evidence of engagement with a major industrial partner's supplier-development environment.
For newer companies, the practical lesson is that a relationship with a prime may involve improving delivery organisation as much as presenting a product. A technical demonstration can start a discussion; repeat business also depends on the supplier's ability to manage quality, schedules and customer commitments consistently.
Silentium's 27 July 2021 announcement reports an A$7.4 million Department of Defence contract for MAVERICK M-series equipment supporting Army development and evaluation. This is a dated award with a stated purpose. It should not appear in a current profile as newly won revenue or as proof that every later product has been accepted.
The company's LAND 156 announcement identifies selection to supply its M8 system. The release places that work within a much larger counter-drone investment, but does not disclose the value of Silentium's individual award. The programme's headline funding therefore remains separate from the company's contract record.
That distinction makes the story more useful to competitors and prospective suppliers. A national programme can contain many equipment categories, vendors and stages of purchase. Knowing that a specialist sensor has been selected is an actionable market signal; assigning the entire programme value to one participant would distort its business scale.
The Giraffe 1X procurement analysis provides another example of separating an individual supplier's role from a wider radar requirement. Comparison should begin with the customer, product and contract stage, rather than assuming that all sensing announcements describe equivalent purchases.
Silentium's space-market page presents both OMNIGUARD equipment and OMNIGUARD SpaceWatch as a data service. This creates different commercial propositions: owning a sensor and arranging its operation, or obtaining information from a provider's service. The public page does not disclose a standard subscription price or a verified recurring-revenue figure.
The Australian Space Agency's Oculus Observatory account records a facility built with support from an A$1.46 million International Space Investment grant. It also describes intended collaboration involving Western Sydney University and the Swedish Space Corporation. The grant is a historical infrastructure-development record, not current service revenue or evidence that every proposed data arrangement has been completed.
For a potential customer, the distinction between equipment and information affects procurement. A data agreement needs clear terms about the information supplied, permitted use, availability and support. An equipment purchase adds responsibility for installation and operation. The company's two offerings may address related needs while fitting different customer budgets and delivery models.
The May 2026 North America announcement names Matthew Ratnesar as regional chief executive and establishes Apex as the US headquarters. It describes responsibilities for the local business, governance and customer relationships. The July appointment of Ian Muldowney similarly covers building the UK and European organisation and its partnerships.
These appointments establish management commitments, while future named contracts, local support arrangements and programme deliveries will show their commercial results. The DefSecIntel profile provides a related company comparison around surveillance products and customer integration. For Silentium, the most informative next evidence will connect its growing regional organisation to a specific buyer and a defined delivery obligation.
Primary company, DST, Raytheon Australia and Australian Space Agency records read. The July 2026 company release supplies a worldwide employee lower bound. Current revenue and shareholder percentages remain unverified. The LAND 156 release does not disclose the individual award value; programme funding is not allocated to Silentium. Historical awards, grant-backed infrastructure and contemplated data partnerships retain their source-specific stages. Product performance claims are not independently endorsed.
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