CBSbutler Holdings Limited trading as CBSbutler
Open positions
DevOps Engineer - DV Cleared
Contract DevOps engineer (outside IR35), onsite in Basingstoke, who must hold UK DV clearance. Day to day: designing CI/CD pipelines, infrastructure-as-code, container/Kubernetes platforms, monitoring and DevSecOps security across cloud (AWS/Azure/GCP) and on-prem estate. Pays £600–£650/day via CBSbutler.
Quantitative Developer - Python / Java - Market Risk & FRTB
Hands-on Python/Java developer building critical risk analytics and regulatory (FRTB) solutions for a City of London financial-markets team, sitting between Quantitative Research, Risk Strats and Engineering. Permanent role, hybrid with 2-3 days per week onsite, paying £70K-£110K.
Network Engineer - Aruba
6-month contract (inside IR35, up to £585/day) for a Network Engineer with strong HPE Aruba expertise to design, implement and manage enterprise LAN/WLAN infrastructure, including network security services. Hybrid role in Kent with 2 days per week onsite; requires active SC clearance and sole UK nationality.
Azure Cloud Developer
Contract Azure Cloud Developer for a 9-month, 100% onsite engagement in Basingstoke, delivering cloud-based solutions within a complex enterprise environment. Requires DV security clearance; day rate £600–£674 outside IR35, sourced via recruiter CBSbutler.
Senior Developer
Contract Senior Developer (up to £525/day inside IR35) on a major UK government AI programme, building an enterprise AI enablement platform — initially an Enterprise AI Gateway integrating AI models, developer tooling and security controls. Requires strong backend/cloud engineering, hands-on Generative AI experience and active SC clearance.
Quantitative Developer – Python/Java, Market Risk & FRTB
Quantitative Developer building enterprise-scale market-risk analytics and regulatory (FRTB/IMA) applications in Python or Java — translating quantitative/regulatory requirements into technical solutions, working with time-series market data, testing frameworks and model validation. Permanent role in Central London, hybrid 2–3 days/week in office; £70k–£110k.
Senior Network Engineer (Squid Proxy & Palo Alto Security)
Contract role (up to £780/day inside IR35) for a senior network engineer to own and optimise enterprise Squid proxy and Palo Alto next-gen firewall services — security policies, SSL decryption, packet analysis and upgrades — hybrid with two onsite days per week. Requires active SC clearance and sole UK national status.
Network Engineer - Aruba
Six-month contract Network Engineer (up to £585/day inside IR35, two days onsite) designing and supporting HPE Aruba enterprise LAN/WLAN infrastructure — Aruba CX/ArubaOS switching, wireless controllers, Aruba Central and ClearPass — for refresh, migration and transformation projects. Requires active SC clearance and sole UK national status.
Earlswood, Redhill, Posted 15 hours ago, up to 585 £ / daySenior Developer
Senior backend developer (contract, up to £525/day inside IR35) building an Enterprise AI Gateway and AI enablement platform for a major UK government AI programme. Day to day: production backend services and REST APIs, LLM integrations via AWS Bedrock, CI/CD, and secure cloud infrastructure on AWS.
Infrastructure Platform Engineer
Inside-IR35 contract (£550–£630/day, 7 months in Taunton, UK) running day-to-day operations of a secure private cloud platform for sensitive government work: monitoring, patching, hardening, IAM/access controls, automation and dashboards. Core stack: VMware/Hyper-V, Linux and Windows, networking, PowerShell/Bash.
DevOps Engineer - DV Cleared
Contract DV-cleared DevOps Engineer (outside IR35, £550-600/day, condensed 3-long-day week) based in Earlswood/Redhill. The engineer designs, builds, and maintains CI/CD pipelines and cloud-native Kubernetes platforms using GitLab CI, Terraform, Ansible, Helm, and Python, requiring active MOD DV clearance.
DevOps Engineer - DV Cleared
Contract DevOps Engineer (outside IR35, £600–£650/day) onsite in Basingstoke, requiring mandatory DV security clearance. The role designs and maintains CI/CD pipelines, infrastructure-as-code, and monitoring across the full software delivery lifecycle, likely for a cleared/defense-related client.
Infrastructure Platform Engineer
Inside-IR35 contract role (£550–630/day) in Taunton for an Infrastructure Platform Engineer to operate, maintain and develop a secure private cloud platform in a highly sensitive environment, requiring active DV clearance and strong infrastructure/virtualisation skills.
Database Administrator
Six-month rolling contract Database Administrator (£430/day inside IR35), hybrid in Telford with two days a week onsite, recruited by CBSbutler for a public-sector engagement. Day-to-day work spans installing and maintaining databases, performance tuning, backups/DR, security controls and troubleshooting across SQL Server, Oracle, MySQL or PostgreSQL.
IT Operations & System Coordinator
Hands-on IT support and operations role in a small IT team: managing helpdesk tickets and access requests, administering Microsoft 365 (Teams, SharePoint, Exchange Online), assisting with SAP Business One and business systems, coordinating suppliers and licences, and supporting cybersecurity and Power BI reporting. Onsite in Redhill, UK.
AI Solutions Architect
Contract AI Solutions Architect (£645/day inside IR35) leading technical discovery of AI opportunities — GenAI, LLMs, RAG, agentic AI — inside a cyber security operations centre: assessing SOC tooling (SIEM, SOAR, EDR/XDR), evaluating AI risks, and defining a secure target architecture and roadmap. Remote with fortnightly London client visits; active SC clearance essential.
Data Analyst - Aerospace
Principal Data Analyst on an Inside IR35 contract (£70–£75/hr, hybrid from Reading) within CBSbutler's Edgewing aerospace/defence business. Day to day: shaping a greenfield data environment, analysing aircraft sensor data, improving data quality, and delivering SQL/Power BI dashboards; active SC clearance is required.