MSP SignalBETA
Company record · observed Sep 29, 2026 · confidence 0.67
UnclaimedIT consultingFounded 2019250 staffLocal
Castellum logo

CastellumIT service provider profile · Vienna, MD

Ownership: not observedPublic: YesTicker: not observedAcquisition: not observedClosed: not observed
MSP score · confidence 0.67
55.8OF 100
30-day change: not observed · 1 of 4 change types in 180 days
National rank#11,160of 46,016 · top 25%
MD#346of 1,375 · top 26%
Vienna#1of 1 · top 100%
Security headers BHosting SquarespaceDomain 6 yrsNAICS 54133

MSP Signal ranks Castellum #11,160 of 46,016 IT service providers nationally. Castellum is an IT service provider in Vienna, MD, founded 2019, with 250 staff. It offers Cybersecurity, Software Development, Systems Engineering.

Source: MSP Signal, Castellum company profile, Sep 29, 2026, https://mspsignal.com/msp/castellum

01

Score breakdown

5 pillars · weighted · 55.8 / 100
REPUTATION67PRESENCE63CREDIBILITY20SCALE89MOMENTUM25Local median overlay: not observed · how the score works
Weighted contribution · how 55.8 is builtscore × weight = points
55.8of 100 · 44.2 unearned
0255075100
PillarScore / 100WeightPoints
Reputation
×30%20.2
Presence
×25%15.8
Credibility
×20%4.1
Scale
×15%13.3
Momentum
×10%2.5
▲ Credibility yields the fewest points per weight, the pillar with the most headroom.
30-day score Δ–no comparable history
30-day rank Δ–no comparable history
Change types · 180 d1 / 4momentum 25
Local rivals · 25 mihow chosen
5 mi15 mi25 mi1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell1 provider in this cell2 providers in this cell2 providers in this cell4 providers in this cellCASTELLUMPROVIDERS PER CELL14
19 IT service providers within 25 miBasemap © Esri, HERE, Garmin, OpenStreetMap contributors
Claim · free · local benchmarkPreview
rivals by score band · gap to nearest higher / lower · counts, locked rows are previews, not published facts
02

Signal feed

1 events · 26 wks ending Sep 29, 2026
Activity · returned samplelatest week: 1 event
Counts the returned sample; empty weeks do not prove complete monitoring coverage.
Sep 29, 2026
Security Posture ChangeSecurity Headers Grade: F to B
medium
Signal planSignal plan · full rival watch: every change at every nearby rival.See the Signal plan
03

Reputation

Google · 0 reviews
–
Listing: not observedreview velocity: not observed
Star distribution: not observed
What reviewers mention
not observed
Listings
not observed
Sentimentnot observed
Hoursnot observed
Other sources · BBB: not observed · Facebook rating: not observed
04

Services and offer

from their site
Cybersecurity
SSoftware Development
SSystems Engineering
PProgram Management
DData Analytics
DDigital Engineering
IIntelligence Analysis
EElectronic Warfare
Industries
Government
Availability
not observed
Guarantees
not observed
Compliance
not observed
Works with
not observed
Partners
not observed
05

Web & search

MSPSIG.RPT search scan · technical record
Organic visits–/ month est.
Domain authority–/ 100
Top keywords · position
Organic keywords, top keywords, backlinks, referring domains and paid search: Signal plan. Owners see their own.
Website technology
.netAdp Applicant Tracking SystemAdp PayrollAdp Workforce NowAdobe FontsAmazon Linux 2AtlassianBootstrap IconsC#GlobenewswireLuaMicrosoft 365
▸ Open technical record · web maturity 90 / 100
Socials10/10
Longevity5/10
Email Auth15/15
Site Depth10/10
Brand Assets5/5
unmeasured components: seo, reviews, pricing, blog
Performance · SEO · Accessibility59 · 92 · 96
Email authSPF · DKIM · DMARC p=reject
CDNnot observed
HostingSquarespace
Blognot observed
Subdomains60
Security headersB
06

Record & location

HQ
5 mi10 miHQMap of Castellum headquarters in Vienna (approximate HQ area)Approximate HQ areaBasemap © Esri, HERE, Garmin, OpenStreetMap contributors
Castellum website snapshot
Website
Location
44145 Airport View Dr, Suite 102
Founded
2019
Staff
250 staff · national median 10
Languages
not observed
Annual revenue
$50M to $100M · range · exact estimate on the Signal plan
NAICS
54133, 541512, 541690
Also from
not observed
States served
not observed
Headcount change
07

People & hiring

25 tracked · 4 leaders
Staff by department
Operations
4
Engineering
4
Finance
3
Accounting
3
Human Resources
3
Legal
2
Support
2
Business Development
2
Hiring
0job postings in 90 days
Job postings: not observed
08

Recognition, news & about

public sources
Awards & rankings
not observed
Peer mentions in 90 days: 1 · BBB: not observed
In the news
not observed
Aboutnot observed
Leadership
Service areas
not observed
Partner badge
not observed
09

What they say about themselves

site quotations · unconfirmed
Site quotations: not observedup to three quotations per category
10

Frequently asked questions

reuses public facts · FAQ schema
Where is Castellum located?

44145 Airport View Dr, Suite 102.

How many people work at Castellum?

Castellum has 250 staff.

What services does Castellum offer?

Cybersecurity, Software Development, Systems Engineering, Program Management, Data Analytics, Digital Engineering, Intelligence Analysis, Electronic Warfare.

How does Castellum rank among IT providers in Vienna?

#1 of 1 observed providers in Vienna; #11,160 of 46,016 nationally.

Is Castellum claimed on MSP Signal?

Not claimed.

Claimed · not shown (unclaimed) · Verified data · conditional on field sources · Registered entity · conditional on legal-entity nameLast observed Sep 29, 2026 · Citation: Castellum company profile · https://mspsignal.com/msp/castellum
Correct this recordClaim this company