Application Security Engineer, Fyxer

£80k

+ Equity

AWS

GCP

Python

macOS

Bash

Splunk

Azure

Windows

Powershell

Mid and Senior level

London

4-5 days a week in office ( Holborn/Chancery Lane, London)

AI executive assistant

Job no longer available

AI executive assistant

21-100 employees

B2CB2BArtificial IntelligenceInternal toolsProductivity

Job no longer available

£80k

+ Equity

AWS

GCP

Python

macOS

Bash

Splunk

Azure

Windows

Powershell

Mid and Senior level

London

4-5 days a week in office ( Holborn/Chancery Lane, London)

21-100 employees

B2CB2BArtificial IntelligenceInternal toolsProductivity

Company mission

Get back one hour every day. Begin your day with emails neatly organized, replies crafted to match your tone and crisp notes from every meeting.

Job

Company

Role

Who you are

4+ years in cybersecurity or technical security roles
Familiarity with frameworks like NIST, ISO 27001, or CIS Controls
Working knowledge of networking, OS (Windows/macOS), and security protocols
Experience with tools like Splunk, CrowdStrike, Nessus, Palo Alto, Wireshark
Basic cloud security knowledge (AWS/Azure/GCP)
Scripting experience (Python, Bash, PowerShell)
A sharp eye for log analysis, threat investigation & incident response
Bonus: Security+ / CEH / CySA+ certs
You’re deeply curious, action-oriented, and thoughtful under pressure. You don’t just want to spot problems, you want to fix them, automate the fix, and then teach the team how to prevent it altogether
You want ownership, not hand-holding. You thrive in ambiguity and get a kick out of being the person others rely on when things go sideways

What the job involves

We’re looking for a hands-on Security Engineer with at least 4 years of real-world experience to help us build a security-first culture and infrastructure as we scale
You’ll be our first dedicated security hire, working directly with our CISO and engineering teams to embed best practices, monitor for threats, and stay ahead of attackers
You’ll get to design and implement controls from the ground up
Harden cloud environments and monitor endpoints
Run threat hunts, analyze logs, and detect anomalies
Respond to incidents in real-time, not just read about them
Participate in tabletop exercises and incident simulations
Stay close to the latest tactics, techniques & procedures (TTPs)
Your fingerprints will be on every layer of our infrastructure from CI/CD pipelines to employee devices to cloud configurations

Application process

Submit your CV (no need for a cover letter)
Quick intro call (20 min) with our talent team
Hiring manager interview (30 min)
Real-world case study (45 min)
Meet the team over lunch (60 min)

Salary benchmarks

Our take

Built with the intention of turning the burden of email drafting into a business's competitive edge, Fyxer AI delivers AI executive assistants that can organise inboxes, draft emails in the tone of voice of each user, and write "better-than-human" meeting notes. Plugging directly into Gmail, Outlook, Slack, Teams, Google Meet and Zoom, its service is simple to use without the need to grasp additional software.

Fyxer is especially useful for industries that spend large amounts of time composing emails. Think real estate, consultants and recruiters, all saving time through the pure-play AI software of Fyxer and its open-source AI models and retrieval augmented generation. The company claims that its customers send 53% of the email drafts generated on its platform.

As more and more professionals turn to AI to save them time in their everyday tasks, Fyxer AI's secure and streamlined service is sure to gain more attention. Things certainly look to be going well, as in 2024, the company raised $500K in just three weeks from existing customers and their networks. It also rocketed from $1m ARR to $22m in just 10 months in 2025 - a sure-fire sign of the value users see in its offering

Steph

Company Specialist at Welcome to the Jungle

Company

Funding (last 2 of 3 rounds)

Sep 2025

$30m

SERIES B

Mar 2025

$10m

SERIES A

Total funding: $40.5m

Company values

What do we value? We're very intentional about adding new people. We believe a small team of exceptional people working hard at a problem they care about will always outperform a larger, more unfocused team. That means you'll need to bring an intensity to this role that might not be expected at other companies but it also means you'll be fast-tracked into roles with greater responsibilities far earlier.

Company HQ

Midtown East, New York, NY

Leadership

Archie Hollingsworth

(Co-Founder & CRO)

Founding Member of Pavilion. Co-founded FYXER, an Executive Assistant Agency, in 2016, and is now using that knowledge at Fyxer AI.

Matthew Ffrench

(Co-Founder & CTO)

Previously co-founded and was CTO at Mercado. Was also Product Manager at Zopa.

Richard Hollingsworth

(Co-Founder & CEO)

Founding Member of AI Circle. Co-founded FYXER with Archie, and was a Quant Trader at Bull Moose Derivatives.

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