Jobs at SiXworks Limited

Designs and implements platform capabilities including Kubernetes environments, CI/CD pipelines, monitoring, repository management, automation, and infrastructure as code. Supports on-premise and cloud platforms while improving reliability, security, scalability, and maintainability. The role collaborates with development teams, provides platform best-practice guidance, and drives continuous improvement across secure digital solutions supporting defence and national security missions.

Leads complex technology and digital projects across secure, mission-critical environments. Responsibilities include delivery strategy, multidisciplinary team leadership, service transition, stakeholder engagement, budget and commercial management, risk assurance, customer governance, and mentoring project managers. The role also supports bids, account growth, operational readiness, and delivery recovery while ensuring security, quality, and customer outcomes.

Design and implement data migration activities, including source analysis, migration pipelines, transformations, validation, testing, and deployment. Build data models, reporting datasets, and ETL/ELT pipelines while optimizing performance and refresh schedules. Support dashboard development teams and contribute to secure, mission-critical technology solutions for Defence and National Security organizations.

Business Analysts will elicit and document data migration and reporting requirements, map data sources and flows, define KPIs, support migration workshops, produce specifications, and assist with user acceptance. The role requires experience on technical projects, data migration or reporting, Agile and Waterfall delivery, Jira, and strong communication. Defence or government-sector experience is desirable. The position is mostly remote with occasional travel to Farnborough or Hook and requires existing or obtainable UK security clearance.

Lead the 24/7 Security Operations Centre, overseeing security monitoring, threat detection, incident response, threat hunting, team management, SOC processes, customer relationships, compliance, KPIs, and continuous improvement. The role requires managing analysts, coordinating critical incidents, optimizing SIEM, SOAR, and EDR capabilities, and reporting operational risks and metrics to leadership.

Designs, deploys, and manages secure Azure cloud infrastructure in highly secure environments. Responsibilities include provisioning IaaS and PaaS services, managing AKS and containers, developing Terraform infrastructure as code, implementing identity and network security controls, monitoring system reliability, supporting CI/CD pipelines, and optimizing cloud costs and performance. The role requires collaboration with engineers, architects, and delivery specialists supporting defence and national security missions.

Lead platform engineering initiatives covering Kubernetes, CI/CD, GitOps, infrastructure as code, monitoring, repository management, and automation across on-premise and cloud environments. Improve platform security, reliability, scalability, maintainability, and performance while mentoring engineers, reviewing designs and code, and guiding development teams on platform best practices. The role requires strong Kubernetes, Terraform, Azure, monitoring, version control, and automation experience in secure environments.

Designs, implements, supports, and troubleshoots secure LAN, WAN, data center, firewall, VPN, and network security infrastructure. The role includes routing, SD-WAN, spine-leaf fabrics, EVPN, automation, whitebox networking, NSX, configuration documentation, proof-of-concept work, and customer support in highly secure Defence and National Security environments.

Work with engineers, architects, and delivery teams to gather and document functional and non-functional requirements, design secure platforms, apply industry methodologies, use data analytics to inform decisions, liaise between IT and stakeholders, mentor junior staff, and support delivery of mission-critical digital solutions in highly secure defence environments.

Manage and develop a large platform engineering team: line management, career development, resourcing, recruitment, capacity planning, and operational oversight. Coordinate with Principal Platform Architect, operations and project managers to align skills to priorities, ensure delivery excellence, secure funding for tools, and communicate resource risks and constraints across stakeholders in a secure defence-focused environment.

Ensure quality, reliability, and security of physical and IaC-based infrastructure by analysing requirements, designing test strategies, provisioning and validating environments, executing functional/integration/regression/resilience/security tests, managing defects, and supporting accreditation, assurance, and compliance activities.

Design, build, secure and maintain multi-classification virtualised, public/private/hybrid cloud and network infrastructure. Support monitoring, patching, incident triage, automation, DevSecOps tooling, and advise project teams while maintaining security standards and delivering operational support in protected environments.

Design, build, maintain and secure multi-classification virtualised and cloud infrastructures. Support public/private/hybrid cloud systems, monitoring, patching, incident triage, tooling (Elastic, Nessus), Kubernetes, VMware, Terraform/HashiCorp Vault, and advise project teams while developing secure-by-design capabilities.

Designs, deploys, and documents secure digital solutions for defence and national security environments. Responsibilities include managing vulnerabilities, configuring SIEM and EDR tools, hardening information systems, integrating security testing into CI/CD pipelines, managing identity and access solutions, developing SOC playbooks, and supporting secure-by-design delivery using Agile and DevSecOps practices.

Lead development and maintenance of information security, risk management, and compliance frameworks. Oversee incident response, vulnerability assessments, penetration testing, audits, and assurance reporting. Ensure alignment with standards (ISO 27001, Cyber Essentials, JSPs), GDPR compliance, governance, stakeholder engagement, training, and business continuity. Manage security resources and support secure-by-design throughout system lifecycles.

Design and deliver secure digital solutions for defence clients. Perform cyber risk assessments, produce risk treatment plans, support compliance and assurance activities, create security documentation, and liaise with MOD stakeholders to translate technical risks into business language.

Operate and maintain privileged-access and identity tooling in highly secure Defence environments: manage credential lifecycles, run discovery scans, ensure RPC and backups, monitor engines and sessions, generate audit reports, apply patches, troubleshoot network components, and integrate alerts with SIEM to detect suspicious activity.

Lead security architecture and secure delivery for MOD and internal projects. Support agile teams to design and deliver secure Kubernetes/cloud environments, perform risk management, produce assurance artefacts to meet MOD regulations, design mitigations, and collaborate with engineering, DevSecOps and cyber teams to implement secure-by-design solutions.