Colt Technology Services
Security Architect - Platform Engineering

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Colt provides network, voice, and data center services to thousands of businesses around the world, allowing them to focus on delivering their business goals instead of the underlying infrastructure.
Why we need this role
The primary purpose of this role is to be a Security Architect with the “Security and Resilience - Security Architecture” team. To be eligible for this role, you will be capable of acting as a subject matter expert on security framework architecture and standards for network, platforms, and security components.
The role will have close interaction with the Security Engineering, SOC, Threat Intelligence team, and Risk functions within the wider department and will participate in researching emerging technologies, products, services, and architectures, to work with the various Colt technology groups (DIO, Network Engineering, Service Delivery) in producing, delivering, and validating the Colt-wide end-to-end architecture.
The role is a combination of internal activities and accountabilities (defining the target architecture for your domain, initiating and/or leading important transformations and new wide-scale deployments, supporting the design and engineering teams) as well as external activities (working with key vendors and start-ups, engaging with customers and the sales organization, and participating in industry forums and events).
Join us and you will be part of a fast-growing community of like-minded experts to grow and learn alongside you in your career.
What you will do
- Design, deliver, and maintain the end-to-end target architecture for the security domain
- Work with your architecture, design, and engineering peers to align the architecture to the Colt technology landscape
- Design and consult on security elements for new product and technology introductions and support compliance/security enforcement projects
- Ensure Colt networks are compliant with relevant regulations, standards, and frameworks such as TSA, DORA, ISO27001, and more
- Technology watching and ability to translate research into actionable data and present up to management (research memos, strategy papers, etc)
- Work with the Colt Business Units on strategic initiatives and support key transformational or wide-scale projects
- Support the product portfolio and product engineering teams on products and services strategy and developments
- Participate in and represent Colt at industry bodies
- Conduct capability mapping exercises
- Ensure all new implementations/changes across the entire Colt landscape are following a “Secure by Design” approach
- Assist with development, planning, and delivery of “Hackathons” and other employee security awareness initiatives such as “Security Awareness Week”
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
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What we're looking for
Must haves:
- 3 years+ technical knowledge and practical experience in information security in a large-scale enterprise or telecommunications industry environments.
- 5 years experience and advanced understanding of information security concepts related to private and public cloud providers and services, and key cloud design concepts such as IaaS, PaaS, SaaS, and their differences, as well as M365 security with specific coverage of E5 security capabilities.
- Able to translate technical security jargon into clearly understood business language.
- Experience in conducting risk assessments in accordance with a recognized risk assessment/management methodology.
- Engineering degree or equivalent (networking, computing/computer science, etc). Pure work experience also accepted.
- Good understanding or above of software-defined concepts and technologies (SDN) as well as NFV concepts and technologies.
- Understanding of network technologies (Role of Switches/Routers in network, TCP/IP IP stack, Knowledge of protocols such as HTTPS, SNMP, NTP, Telnet, SSH) as well as security enabling technologies (Firewalls, IDS/IPS, content filtering platforms, proxies, DMZ, anti-malware, anti-spam, anti-ransomware, anti-DDOS, NAC, and MDM technologies).
- Entry-level experience of UNIX and/or MS Windows including Active Directory.
- Strong team player able to lead small teams of senior architects/engineers, drive projects, and activities.
- Good presenting and interpersonal skills (C-level, customer meetings, vendor management, speaking at conferences, publishing thought leadership, active participation in SDOs and other industry forums).
- Good combination of creative and analytical skills, able to deliver complex documents and "connect the dots".
Might haves:
- Experience in AI (LLM) security, guardrails, DLP, understanding of risk such as Prompt Injection and Model Poisoning, etc.
- Good understanding of Telecoms Security Act requirements, contained within the Code of Practise.


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What we offer you:
Looking to make a mark?
At Colt, you’ll make a difference. Because around here, we empower people. We don’t tell you what to do.
Instead, we employ people we trust, who come together across the globe to create intelligent solutions.
Our global teams are full of ambitious, driven people, all working together towards one shared purpose: to put the power of the digital universe in the hands of our customers wherever, whenever, and however they want.
We give our people the opportunity to inspire and lead teams, and work on projects that connect people, cities, businesses, and ideas. We want you to help us change the world, for the better.
Diversity and inclusion
Inclusion and valuing diversity of thought and experience are at the heart of our culture here at Colt. From day one, you’ll be encouraged to be yourself because we believe that’s what helps our people to thrive. We welcome people with diverse backgrounds and experiences, regardless of their gender identity or expression, sexual orientation, race, religion, disability, neurodiversity, age, marital status, pregnancy status, or place of birth.
Most recently we have:
- Signed the UN Women Empowerment Principles which guide our Gender Action Plan
- Trained 60 (and growing) Colties to be Mental Health First Aiders
Please speak with a member of our recruitment team if you require adjustments to our recruitment process to support you. For more information about our Inclusion and Diversity agenda, visit our DEI pages.
Benefits
Our benefits support you through all parts of life, for both physical and mental health.
- Flexible working hours and the option to work from home.
- Extensive induction program with experienced mentors and buddies.
- Opportunities for further development and educational opportunities.
- Global Family Leave Policy.
- Employee Assistance Program.
- Internal inclusion & diversity employee networks.
A global network
When you join Colt, you become part of our global network. We are proud of our colleagues and the stories and experience they bring – take a look at ‘Our People’ site including our Empowered Women in Tech.
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