ActiveFence - UG
AI Safety & Alignment · Cybersecurity AI
4open roles
1backers · Resolute Ventures
Growinghiring pace, 68 of 100
10+team · employees, estimated range
Overview
Security, Safety, and Trust platform for the AI Era. Protect GenAI and UGC platforms with end-to-end trust, safety & security solutions.
Key facts
As of Nov 13, 2026, Alion lists 4 open roles at ActiveFence - UG. ActiveFence - UG is headquartered in London, United Kingdom. It was founded in 2018.
- Open roles
- 4Its careers board, read on Sep 28, 2026
- Headquarters
- London, United KingdomAlion company profile, updated Nov 5, 2026
- Founded
- 2018Alion company profile, updated Nov 5, 2026
- Employees
- 10+Alion company profile, an estimated range
- Visa sponsorship, United Kingdom
- A-ratedUK Home Office · checked Nov 12, 2026
- Technologies in its job postings
- 11Named in its job postings
Official records
Funding and backers
Team
11-50
employees, estimated range
Hiring now
4
+3 posted in 30 days
Backers
1
Resolute Ventures
Momentum
55/100
hiring for its size, a new city, in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Jun 6, 2022
Incorporated ACTIVEFENCE LIMITED · Companies House
2018
Founded
Tractionpublic signals, read monthly
Web presence
top 0.08%
of 133.2M domains by links, Common Crawl
Hacker News stories
1
best: 1 points
Registers and programsofficial lists and records that name the company
| Legal entity | ACTIVEFENCE LIMITED | Companies House |
| Registered | 6 Jun 2022 |
Backed byfrom the funds' portfolios and accelerator catalogs
Investors in similar startupsfunds that back the companies most like this one
backs compliant-llm
backs Refractal
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Jobs
$127k – $140k per year · Remote (United States) · Full-Time · 5+ years exp
Multimodal AI
Red Teaming
LLM Guardrails
Machine Learning
Apply
≈ $130k – $256k per year (Estimated) · Remote (United States) · Full-Time · 1+ year exp · Master's Degree · United States
Python
Multimodal AI
AI Agents
PyTorch
LLM
OpenAI
Anthropic
Red Teaming
Machine Learning
Apply
Salary insights
Compensation ranges based on this company's open jobs
Median
$220k
Typical range
$140k – $300k
Open positions
2
2
Jobs
Senior
50%
Staff
50%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 1 | $300k | $300k |
| Staff | 1 | $140k | $140k |
Highest paying role
GenAI Account Executive
$300k
Normalized to USD per year
Visa sponsorship
A-rated
Sponsor licence
Skilled Worker
Visa route
0
Open roles in United Kingdom
In the register as ActiveFence Limited, London
Other sponsors in the same field
Arcadia Impact
BlueDot Impact
Mindgard
Anthropic
Alert me
UK Home Office · checked Nov 12, 2026 · Visa details by country
Growth
Hiring Momentum
68/100
Growing
Open positions
4
2 opened / 0 closed in 30 days
Hiring Dynamics
0%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
AI/ML
25% ▲
Security
25% ▲
Management
25% ▲
Sales
25% ▲
Activity Timeline
Added Post-training to stack
Oct 2026
Added LLM Guardrails to stack
Oct 2026
New location: United States
Oct 2026
Added PyTorch to stack
Oct 2026
Added Python to stack
Oct 2026
Added OpenAI to stack
Oct 2026
Added Multimodal AI to stack
Oct 2026
Added Machine Learning to stack
Oct 2026
Added LLM to stack
Oct 2026
Added Anthropic to stack
Oct 2026
Added AI Agents to stack
Oct 2026
Tech stack
Technologies named in job postings at ActiveFence - UG over the last 12 months, by layer, with the share of postings for each.
Technologies in use
11
Postings analysed
4
Stack modernity
80/100AI adopter
Languages
Python
Frameworks & libraries
PyTorch
Cloud & platforms
Anthropic
OpenAI
AI & ML
LLM
Sign in to see how your skills match this stack
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Full ActiveFence - UG tech stack
11 technologies · by team · pay by technology · changes · similar stacks
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Resolute VenturesVia a fund
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
Shared investors
News
Aug 25 2026 Alice, AI Security Startup Working With Anthropic and Google Raises 140 Million Read More
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Report
Everyone is talking about AI 'escaping', but cyber experts say the real threat is far more serious
It's not science fiction: Recent tests saw powerful AI agents exploit security flaws, reach the open internet and target real systems; Israeli experts say rapidly improving cyber capabilities, not machine consciousness, are the immediate concern
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Report
Is your AI pilot passing the wrong test?
AI Impact tracks AI safety gaps, India's opportunity beyond the model and a new way to divide work across people and AI.
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Report
AI Security Benchmark: Detection Accuracy & False Positives Alice
Compare top AI safety models on precision, recall, and false positives to choose the right defense for your GenAI applications and agents.
Read more
Report
Top Tech Solution Providers Honored by Marketplace Risk Excellence Program
Top solution providers recognized for advanced strategies and technologies that bolster the risk management capabilities of marketplaces and digital platforms.
Read more
Report
Alice VP of Security Research Roey Fizitzky on Why AI Won't Replace Human Researchers for Ctech CTech profiles Alice's security research team and why human intuition, hypothesis, and imagination still drive the work as AI accelerates it. Read More
CTech profiles Alice's security research team and why human intuition, hypothesis, and imagination still drive the work as AI accelerates it.
Read more
Report
Alice CISO Guy Stern on Securing Agentic AI for CTech CTech examines how security teams must rethink identity, credentials, and control as AI agents gain the ability to act on their own. Read More
CTech examines how security teams must rethink identity, credentials, and control as AI agents gain the ability to act on their own.
Read more
Report
Alice Raises 140M to Make Sure AI Does Exactly What It's Supposed to Do Trusted by Anthropic, Google, and Cohere, Alice brings nearly a decade of real-world adversarial intelligence to frontier AI - and is approaching 100M in ARR. Read More
Trusted by Anthropic, Google, and Cohere, Alice brings nearly a decade of real-world adversarial intelligence to frontier AI - and is approaching 100M in ARR.
Read more
Report
Show more news
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
London
London
United Kingdom
HQ
1 open roles 1 posted in 90 days 10-50 est. staff
hires for Management
How to cite this page
Alion, "ActiveFence - UG: key facts", as of Nov 13, 2026. https://alion.io/company/activefence
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page. CC BY-SA 4.0