iO Associates
SC/DV Senior Infrastructure Engineer

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SC/DV Cleared Senior Infrastructure Engineer
Location: London - 2-3 days per week onsite
Rate: Up to £625 per day, Outside IR35
Contract Length: 6 months
Clearance: Active SC or DV Clearance required
I'm looking for an experienced, security-focussed Senior Infrastructure Engineer to design, implement and support secure Microsoft infrastructure across complex enterprise environments.
This is a hands-on role focused on Microsoft infrastructure, identity, security, automation and operational support, with involvement across the full lifecycle of technical projects.
Key Skills & Experience
- Strong Windows Server administration experience
- Extensive Active Directory experience, including domains, trusts and identity management
- Strong experience with PKI and certificate services
- Hands-on PowerShell and Ansible automation experience
- Experience designing and supporting secure Microsoft infrastructure services
- Knowledge of identity, authentication and privileged access management (PAM)
- Experience with security monitoring, SIEM and logging
- Experience supporting Exchange / Exchange Online, DNS and core infrastructure services
- Strong troubleshooting skills across infrastructure and security environments
- Experience producing technical documentation, implementation plans and operational procedures
- Experience working through the full project lifecycle, from requirements and design through to implementation and transition into service
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.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
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.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
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
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Highly Desirable Experience


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- Python and automation/tooling development
- Linux / Unix environments
- CyberArk or other PAM technologies
- DLP and security hardening
- Virtual desktop / remote access technologies
- SMTP, HTTP/HTTPS, DNS and proxy services
- Experience working within regulated, public sector or security-conscious environments
This opportunity would suit an experienced infrastructure or security professional who enjoys working across Microsoft technologies, automation and secure enterprise environments, while engaging with both technical teams and stakeholders.
Please don't hesitate to apply now for further information!
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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