Senior Information Security Analyst (Security Architecture Team)

StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision. With 465 billion automated optimizations per second, the AI-powered StackAdapt Marketing Platform seamlessly connects brand and performance marketing to drive measurable results across the entire customer journey. The most forward-thinking marketers choose StackAdapt to orchestrate high-impact campaigns across programmatic advertising and marketing channels.

As a Senior Information Security Analyst on our Security Architecture team, you will play a key role in how StackAdapt secures its technology, systems and people. Working closely with the Information Security Architect, you will execute the end to end security architecture process for a range of initiatives across the business. Engaging with business units, defining security requirements, and ensuring they are implemented effectively. Beyond project work, you'll contribute to the broader InfoSec function: supporting the team's use of security tooling, helping the business with InfoSec queries, and playing an active role in how the team adopts and embeds AI into its work.

This role follows established processes and frameworks, but we're not looking for someone who just executes tasks. We want someone who brings curiosity and initiative. Someone who can help improve processes. You'll have real autonomy in how you manage your work, with the support and mentorship of the Information Security Architect.

You'll thrive in this role if you're someone who enjoys variety, takes pride in producing clear and useful security outputs, and wants to develop into a well-rounded security architect over time. A collaborative mindset, strong communication skills, and a genuine interest in the evolving security landscape, including AI.

StackAdapt is a remote-first company. This role is open to candidates in Canada and the US. We will be prioritizing candidates in Eastern time zones.

What you'll do:

Execute the security architecture process for business initiatives — including new technology onboarding, tool integrations, and system reconfigurations — from initial engagement through to confirming requirements have been implemented

Engage with project teams and the PMO to understand what is being built or changed, identify the security implications, and produce clear, actionable security requirements

Support the Information Security Architect across their broader remit — contributing to analysis, reviews, and outputs as needed

Develop a strong working knowledge of the team's internal security systems and processes, and identify and drive improvements where opportunities arise

Act as a point of contact for InfoSec queries from across the business, handling requests independently and escalating where appropriate

Use the team's security tooling including SIEM, EDR, CNAPP, vulnerability scanning, email and web security gateways, and AI security tools — to identify and analyse risk areas and support in driving down key risks

Contribute to the team's adoption of AI tools in day-to-day InfoSec work, and support the broader AI security strategy

What you bring:

3–5 years of experience in an Information Security role

An understanding of project security engagement. How to assess what's being built or changed, identify the implications, and turn that into clear requirements

Ability to produce clear, practical security requirements that technical and non-technical teams can understand and act on

Hands-on experience or familiarity with security common tooling: SIEM, EDR, vulnerability management, or similar platforms

Comfortable working autonomously on a varied workload and managing your own queue of work

Strong communication skills - able to have productive conversations with engineers, product managers, and business stakeholders without being a blocker

A curious, improvement-oriented mindset - you follow process but you also ask whether the process is right

Awareness of common security frameworks and standards such as ISO 27001, NIST, SOC 2, or CIS Controls

An interest in AI - both as a tool to improve how security teams work and as an emerging risk area to understand

Understanding risk management: Identifying risks and understanding mitigation strategies

Nice to have:

Experience with cloud security across AWS, GCP, or Azure

Familiarity with third-party or vendor risk assessment processes

Experience contributing to a risk register, audit, or compliance programme

Relevant certifications such as CompTIA Security+, CISSP Associate, CISM, or similar

StackAdapter's Enjoy:

Highly competitive salary

Retirement/ 401K/ Pension Savings globally

Competitive Paid time off packages including birthday's off!

Access to a comprehensive mental health care program

Health benefits from day one of employment

Work from home reimbursements

Optional global WeWork membership for those who want a change from their home office and hubs in London and Tor…