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Data Scientist / Machine Learning Engineer – Defence & Security Bristol, London, Manchester DV Cleared Required The Opportunity Join a growing Data Science & Machine Learning team working on some of the most ambitious and mission-critical programmes in the Defence & Security sector. This role offers the chance to apply cutting-edge AI techniques to real-world challenges, delivering impactful solutions that support national security. Key Responsibilities • Apply data science, machine learning, and AI techniques to solve complex, real-world problems, • Research, design, and implement innovative models and solutions, • Work across the full ML lifecycle from requirements gathering and prototyping to deployment and live service support, • Deliver high-quality, scalable solutions with measurable impact, • Collaborate with multidisciplinary teams in agile environments, • Contribute to new ideas, propositions, and project delivery, • Build strong relationships with stakeholders and communicate insights effectively Essential Skills & Experience • Proven experience applying data science or machine learning in Defence, Security, public sector, or academia, • Strong understanding of machine learning models (e.g. Transformers, CNNs, Generative AI) and their practical applications, • Excellent communication skills with the ability to present complex ideas clearly, • Experience working with stakeholders and cross-functional teams, • Track record of contributing to project delivery, innovation, or capability development Desirable Skills • Experience working with text, audio, image, or video data, • Familiarity with cloud platforms (AWS, Azure, GCP), • Strong Python skills and experience with ML libraries and frameworks (e.g. TensorFlow, PyTorch), • Knowledge of statistics and probability, • Experience with ML lifecycle tools (e.g. MLflow, Kubeflow, Argo), • Understanding of Ethical and Responsible AI principles Security Requirements You must hold active UK Developed Vetting (DV) clearance.

The Opportunity ProCheckUp, an elite independent cybersecurity consultancy serving FTSE 100 corporations, UK government authorities, and international financial institutions, is seeking an experienced Penetration Tester with SC Clearance to join our expanding remote team. This is an exceptional opportunity to conduct high-impact security assessments across diverse enterprise environments while maintaining work-life balance through flexible remote working. You'll contribute to ProCheckUp's ambitious expansion phase, working alongside industry-leading security professionals on mission-critical infrastructure, applications, and network security testing for the UK's most security-conscious organizations. What You'll Do Core Responsibilities: • Conduct advanced penetration testing across network infrastructure, web applications, and mobile platforms for enterprise clients, • Perform vulnerability assessments, threat modelling, and risk analysis across diverse technical environments, • Execute social engineering assessments and physical security testing, • Produce detailed scoping documents and executive-level penetration testing reports aligned with CREST and NCSC standards, • Lead incident response investigations and digital forensic analysis when required, • Work independently on client-facing assessments whilst collaborating with senior consultants and team leaders, • SCADA/OT environment security testing, • Cloud infrastructure penetration testing (AWS, Azure), • Web services and API security, • Mobile application testing (iOS/Android) Who You Are Essential Experience & Skills: • Minimum 3+ years professional penetration testing experience, • Demonstrable expertise in network, application, and infrastructure security testing, • Strong hands-on proficiency with penetration testing frameworks, exploitation techniques, and security tools (Metasploit, Burp Suite, Wireshark, custom tools), • Deep technical knowledge of Windows, Linux, Unix operating systems and TCP/IP networking protocols, • Proven ability to perform source code reviews and application security analysis, • Advanced understanding of web application vulnerabilities (OWASP Top 10) and mitigation strategies, • Excellent report writing and executive communication skills—ability to translate technical findings into business risk, • Ability to work autonomously and adapt to client-specific environments, • CREST/CyberScheme CCTM/CSTM CCT/CSTL-INF or CCT/CSTL-APP (current), • NCSC CHECK Team Leader (CTL) (current) or CHECK Team Member (CTM) (current) preferred but not essential, • CEH Advanced (AECH) or OSCP, • SANS GCIH, GPEN, or GWAPT, • EnCase Certified Examiner (EnCE), • CWSP (Certified Wireless Security Professional), • Published security research, CVE disclosures, or white papers, • Curiosity and passion for emerging security threats and attack methodologies, • Drive to mentor junior consultants and contribute to technical innovation, • Professional demeanour with excellent client-facing communication, • Attention to detail in all deliverables, particularly technical reports and evidence documentation Why ProCheckUp? ✓ Proven Track Record: 25+ years delivering security services to world-leading organisations; holders of NCSC CHECK, CREST, PCI QSA, and PCI ASV accreditation's ✓ Prestigious Client Base: Work directly with FTSE 100 companies, UK government bodies, international law firms, and critical infrastructure operators ✓ Technical Leadership: Collaborate with industry experts who publish research, present at major conferences, and drive the cybersecurity industry forward ✓ Flexibility & Autonomy: Remote-first working with complete location flexibility across the UK—work from home, co-working spaces, or client sites as you prefer ✓ Career Progression: Clear advancement pathway from Consultant → Senior Consultant → Team Leader → Technical Director; investment in advanced certifications and professional development ✓ Competitive Remuneration: Market-leading salary package (£65,000–£85,000+ depending on experience and certifications) plus comprehensive benefits ✓ Backing of a Stable, Well-Funded Firm: Work for an independent, profitable, growth-focused security consultancy—not a commodity testing mill ✓ Continuous Learning: Access to research funding, certification sponsorship, conference attendance, and exposure to cutting-edge threat landscapes The Application Process This is a carefully selected search—we're looking for genuine penetration testing professionals with the technical depth to advise enterprise clients, not script-runner-test shops. To Apply: • Submit your CV (including certifications, security clearance status, and estimated clearance renewal date), • Write a brief covering letter (150–250 words) addressing:, • Why ProCheckUp's mission and client base appeal to you, • Your remote working setup and availability (notice period, start date), • Screening call with HR (15 mins): Verify background, clearance status, and role fit, • Technical interview with Senior Consultant (45 mins): Deep-dive on penetration testing methodology, recent case studies, and security trends, • Final interview with Hiring Manager/Technical Director (30 mins): Culture fit, growth ambition, and team dynamics Logistics | Position Type | Full-Time, Permanent | | Location | Remote, United Kingdom | | Security Clearance | SC (Minimum) | | Working Arrangements | Flexible remote; occasional travel for client engagements | | Salary | £65,000–£95,000+ based on experience, certifications, and client-facing impact | | Benefits Package | Competitive pension, health insurance, professional development budget, | | Notice Period | 2-8 weeks preferred; negotiable for exceptional candidates | About ProCheckUp Founded in 1999, ProCheckUp has evolved from a specialist penetration testing firm into a multi-disciplinary cybersecurity consultancy trusted by the world's most security-conscious organizations. Our team of CHECK Team Leaders, CREST Certified Testers, and forensic specialists delivers: • Penetration Testing & Security Audits: Infrastructure, application, and mobile assessments, • Compliance Advisory: PCI DSS, GDPR, ISO27001 implementations and certifications, • Incident Response & Forensics: 24/7 emergency response and digital evidence analysis Equal Opportunities ProCheckUp is an equal opportunities employer. We celebrate diversity and are committed to building an inclusive environment for all employees, regardless of gender, race, ethnicity, religion, disability, age, sexual orientation, or gender identity. We encourage applications from underrepresented groups in cybersecurity. Security Vetting: All successful candidates will be subject to UK security vetting procedures. Applicants must have resided in the UK for the last 5+ years to be eligible for SC clearance (or provide documented reasons for absence). Previous security clearance experience is valued but not essential. *

Location: Bristol, Cambridge, London, Manchester Position Summary Connect to your Industry Do you want to be at the heart of some of the biggest and most ambitious programmes undertaken to keep our country safe? We are proud of the impact we have with our Defence & Security clients, the strength of our relationships, and the variety of our skills and expertise that we bring to help them achieve their mission. We’re growing our teams across all of Technology & Transformation. If you are cleared to DV level, and want to grow your career in this sector, we are very keen to hear from you. Connect to your career We drive progress. Using our vast range of expertise, we help our clients become leaders wherever they choose to compete. To do this, we invest in outstanding people. We build teams of future thinkers, with diverse talents and backgrounds, and empower them all to reach for and achieve more. What brings us all together? It’s how we approach the thousands of decisions we make every day. How we behave, our beliefs and our attitudes. In other words: our values. Whatever we do, wherever we are in the world, we lead the way, serve with integrity, take care of each other, foster inclusion, and collaborate for measurable impact. These five shared values guide every decision we make and action we take, helping us deliver impact where it matters most. Connect to your opportunity We're looking for people who are natural initiative-takers—individuals who bring out the best in others, are brilliant listeners, and can help grow our business without compromising standards, integrity, or culture. We are seeking a highly skilled and motivated Full Stack Developer to join our dynamic team in the public sector. The ideal candidate will possess a strong background in both front-end and back-end development, with a focus on creating innovative and efficient solutions for government-related projects. The successful candidate will play a key role in designing, implementing, and maintaining web applications that address the unique challenges and requirements of Defence & Security. Responsibilities: • Design, develop, and deploy robust web applications for public sector projects., • Contribute to the entire software development lifecycle in collaboration with cross-functional teams., • Create responsive user interfaces using modern front-end technologies and frameworks., • Develop secure and efficient server-side logic using relevant languages and frameworks., • Implement security best practices, ensuring compliance with government regulations., • Conduct regular security assessments and collaborate to address vulnerabilities., • Develop and maintain well-documented RESTful APIs for seamless system communication., • Work with project managers, UX/UI designers, and stakeholders to translate requirements into technical specifications. All applicants must hold (or be willing to obtain) UK security clearance to Developed Vetting (DV) level. Essential skills: • Proficient in modern front-end technologies: HTML5, CSS3, JavaScript, and frameworks like React, Angular, or Vue.js., • Strong skills in server-side logic using languages such as Node.js, Python, or Java., • Experience with both SQL and NoSQL databases, including data modelling for government applications., • Proficient in analyzing complex issues and implementing effective solutions for public sector challenges., • Flexibility to navigate changing project requirements in a dynamic public sector environment., • Familiarity with government processes, policies, and systems, enhancing the ability to tailor solutions to public sector needs., • Understanding of UX principles to create applications that are accessible and user-friendly for government officials and the public., • Proven ability to develop and maintain well-documented RESTful APIs for seamless system communication., • Experience with implementing and adhering to security best practices for government data.

SC Cleared DevOps Engineer – AWS, Java, React – 12 Months - £450 - £550 per day – Inside IR35 – Home based SC Cleared DevOps Engineer - AWS – Home based. Experience building and operating secure, automated, cloud‑native platforms, ideally within public‑sector, policing, justice, or other security‑sensitive environments. Comfortable working with LLM‑assisted engineering, and Claude is a strong bonus. This programme is already in delivery and requires a significant number (x40) of DevOps Engineers to accelerate build and deployment activity, with a target completion around mid-year. Skills & experience: • SC Clearance – (NPPV3 ideally), • AWS - Building and operating secure, automated, cloud‑native platforms, • DevOps – Software Engineering, • Comfortable working with LLM‑assisted engineering, and Claude is a strong bonus, • Experience working in a AWS, Postgres, React, Node environment, • Build and maintain CI/CD pipelines for automated build, test, and deployment, • Develop and manage Infrastructure as Code (IaC) using tools such as Terraform, • Deploy and manage applications using containerisation (Docker) and Kubernetes, • Contribute to software engineering activities across the platform (not pure ops), • Work within cross-functional teams delivering a modern data platform, • Support the migration from a legacy mainframe system to a cloud-native solution Security Clearance • SC Clearance – must be currently held (Home Office SC highly preferred), • NPPV Level 3 – not required upfront, but must be willing to undergo SC Cleared DevOps Engineer – AWS, Java, React – 12 Months - £450 - £550 per day – Inside IR35

DV Cleared Data Engineers & Data Architects UK | Hybrid | Multiple Levels Datatech Analytics is partnering with a leading UK consulting and technology organisation delivering secure, production-grade data platforms across defence, national security and critical infrastructure. This is real engineering. Systems that directly support mission-critical decision making. We’re looking to connect with DV cleared Data Engineers and hands-on Data Architects who still enjoy building and leading from the front. The Role Design, build and scale modern data platforms in highly secure environments, working across the full lifecycle from ingestion through to serving. This isn’t theory-heavy. It’s delivery, solving complex problems and getting systems into production. What You’ll Be Doing • Building end-to-end, production-grade data pipelines, • Engineering scalable platforms across batch and real-time environments, • Working with large-scale structured and unstructured data, • Deploying and optimising cloud-native infrastructure, • Collaborating on high-impact, secure programmes Tech Environment Python, SQL Spark, Databricks AWS, Azure or GCP Lakehouse, streaming, modern data platforms Who We’re Looking For • Active DV clearance, essential, • Engineers who enjoy building, not just designing, • Experience delivering production data platforms at scale, • Architects who stay close to the tech These roles sit at the centre of programmes where scale, security and reliability are non-negotiable. If you’re DV cleared and want to stay close to the tech while working on systems that genuinely matter, it’s worth a conversation.

ServiceNow Technical Consultant DV Cleared Location: Remote (UK-based with travel to client sites) Like the look of this opportunity Make sure to apply fast, as a high volume of applications is expected Scroll down to read the complete job description. Salary: £45,000 £60,000 per annum + 10% annual bonus Clearance: Must hold active DV (Developed Vetting) clearance We are looking for a motivated ServiceNow Technical Consultant to join a growing delivery team, working on impactful projects across enterprise and public sector environments. This is a fully remote role with UK-based travel to client sites. This is a fantastic opportunity for someone with 23 years of ServiceNow experience who is looking to build on strong platform foundations, develop their consulting skills, and contribute to successful client delivery within a supportive and high-performing team. Key Responsibilities Solution Delivery • Configure and develop ServiceNow solutions across ITSM, ITOM, and CMDB workstreams, • Build platform components including Flows, Business Rules, UI Policies, Client Scripts, and integrations, • Contribute to technical documentation including build specifications, test scripts, and handover materials, • Ensure all configurations follow best practices and are scalable and upgrade-safe, • Support workshops and requirements gathering sessions alongside senior team members, • Build positive working relationships with client stakeholders and project teams, • Work closely with senior consultants and architects to develop technical capability, • Actively pursue ServiceNow certifications and continuous professional development, • Stay up to date with platform developments and industry trends, • 23 years of hands-on ServiceNow experience (implementation, support, or internal IT), • Working knowledge of ITSM processes and core ServiceNow configuration, • Experience with platform development including Business Rules, Client Scripts, and UI Policies, • ServiceNow Certified System Administrator (CSA), • Strong communication and interpersonal skills, • Eagerness to learn and develop within a fast-paced environment, • Exposure to ITOM, CMDB, or integrations, • Progress towards CIS-ITSM or other ServiceNow certifications, • Familiarity with ITIL frameworks, • Private medical insurance, • Death in service cover, • Ongoing training and certification support, • 10% annual bonus

ServiceNow Senior Technical Consultant DV Cleared Location: Remote (UK-based with travel to client sites) Is this the role you are looking for If so read on for more details, and make sure to apply today. Salary: £60,000 £75,000 per annum + 10% annual bonus Clearance: Must hold active DV (Developed Vetting) clearance We are looking for an experienced ServiceNow Senior Technical Consultant to join a growing delivery team, working on high-impact projects across enterprise and public sector environments, specialising in ServiceNow implementation and AI-driven enterprise automation. This is a fully remote role with UK-based travel to client sites. This is an excellent opportunity for a hands-on technical specialist with 35 years of ServiceNow experience who is ready to take ownership of technical delivery, contribute to solution design, and play a key role in successful client engagements. We hold ourselves to very high standards on delivery, and know our people are our USP. You will be supporting not only client success, but the future success of the business. Key Responsibilities Solution Delivery • Deliver end-to-end ServiceNow implementations across ITSM, ITOM, and CMDB workstreams, • Configure and develop platform capabilities including Flows, Business Rules, Script Includes, UI Policies, Client Scripts, and integrations, • Produce high-quality technical documentation including design specifications and test plans, • Lead technical workstreams and coordinate day-to-day delivery activities, • Provide guidance and support to junior consultants, • Participate in design reviews, QA processes, and continuous improvement initiatives, • Build strong relationships with client stakeholders and technical teams, • Facilitate workshops and translate business requirements into technical solutions, • Communicate progress and technical decisions clearly to a range of audiences, • 35 years of hands-on ServiceNow implementation experience, • Strong expertise in ITSM (Incident, Problem, Change, Request), • Experience with ITOM, CMDB, and integrations (REST/SOAP/MID Server), • Proven delivery across the full project lifecycle, • ServiceNow certifications such as CSA and CIS-ITSM, • Excellent communication and stakeholder engagement skills, • Strong problem-solving ability and attention to detail, • Additional ServiceNow certifications, • Experience with AI capabilities within the ServiceNow platform, • Exposure to public sector or defence environments, • Private medical insurance, • Death in service cover, • Ongoing training and certification support, • 10% annual bonus

Collaborate closely with backend developers to integrate front-end solutions with APIs and services. DV Cleared Front End Developer. Our client is seeking DV cleared Front End Developers to support high impact Defence and Security programmes.

The role provides expert oversight of external supplier security controls, evaluates third‑party risk exposure, and delivers assurance that supply chain partners meet the organisation’s security expectations. Senior / Security Risk Assurance Manager – SC cleared. The Senior Security Risk Assur

The position allows for flexible work arrangements, with up to 3 days a week in London and a requirement for security clearance due to project nature.

The successful candidate will possess proven experience in cybersecurity, security architecture, threat modelling, or related fields within Public Sector and MOD and will have achieved or be working towards Full Membership of CIISEC and UK Cyber Security Council professional registration at either C

Security clearance is ideally required.

Candidates must have strong project management skills, experience in technology delivery, and UK Government Security Clearance.

The role involves working on high-impact projects related to Defence and Security, Transport, and Public Services.

We are seeking an SC Security Cleared Cyber Assurance Coordinator SME with proven experience in security assurance and risk management within defence, government, or high-security environments. Security Assurance Coordinator - SC Cleared, Hybrid. Experience with accreditation processes, developing s

A leading technology and information services firm is seeking a Lead Platform Engineer to manage secure AWS and on-premise environments.The role involves operating platform services, providing L3 support, and ensuring compliance with best practices.Ideal candidates will have experience with AWS plat

In this role, you will implement security solutions and lead the configuration of Fortinet products while receiving full training. A fast-growing technology firm in the East Midlands is seeking a dedicated Cyber Security Engineer with a current CCNA or PCCET certification.

ASSYSTEM, based in Greater London, seeks an exceptional Executive Assistant to provide strategic and operational support to Director-level leadership.This pivotal role demands experience in supporting senior executives and offers significant responsibilities such as managing complex priorities, prep

This role offers the opportunity to gain security clearance, work with cutting-edge technologies like Palantir Foundry, and build strategic capabilities in data modelling and application development. A current UK Security Clearance. Be part of a high-profile Defence initiative and gain/enhance secur

A consulting company in Cambridge is searching for an experienced Electronics Engineer Consultant with a focus on security clearance. Ideal candidates have experience across various electronics fields such as RF Engineering, and must be able to obtain security clearance.

A consultancy focusing on critical engineering solutions is seeking a security cleared Lead Software Engineer to lead a team in delivering complex systems integral to nationally significant programmes. The ideal candidate will have strong leadership skills and experience in a high-stakes environment

Mott MacDonald is hiring a Senior Electrical Building Services Engineer to join their Energy Unit's National: Defence and Civil division.This role involves managing and delivering electrical building services design solutions for various projects across the UK and Europe.The ideal candidate will hav

Experis is seeking a DV Cleared Network Engineer to support a satellite network project in England. This full-time position offers hybrid working opportunities while contributing to critical national security projects.

SC Cleared Cloud Security Engineer (Azure). Review technical changes for security impact. Work closely with engineering to embed security into delivery.

Proven experience as a Security Architect or senior cyber security consultant in digital delivery environments. Security Architect - SC Cleared - Outside IR35. Sanderson G&D are seeking a Security Architect who will provide strategic cyber security advice and guidance to digital product teams, actin

A technology services provider in the UK is looking for multiple Cyber Security Engineers to maintain cyber security for classified and unclassified networks. The role requires experience in MOD project environments and encompasses system vulnerability assessments, incident detection, and working wi

The position is hybrid, offering flexibility while contributing to initiatives that ensure safety and security for clients. This role requires a strong background in manual testing and active UK Security Clearance.

A highly specialised technology organisation in the National Security sector seeks a Senior Data Science and Machine Learning Researcher.

Are you SC cleared and passionate about cyber security? We're hiring across multiple exciting roles within the Public Sector. Business Analysts with experience in cyber security, risk, or compliance frameworks. If you're interested in working with cutting‑edge technology and contributing to the de

BPSS and SC security clearance required. Security clearance is desirable, and the ability to obtain SC clearance is required.

A leading cybersecurity training provider in Greater London is seeking a Principal Cybersecurity Engineer with SC Clearance. This role involves providing expert advice on defenses against cyber threats, managing security tooling and operations, and improving cybersecurity policies. Candidates should

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.

A leading global consulting firm is seeking a Data Architect to manage and define architecture for high-profile projects.Candidates must have a strong background in data strategy, migration, and integration, with expertise in Java, Scala, Python, and Big Data technologies.Key responsibilities includ

Sanderson Government & Defence is seeking a Senior Incident Manager for a government and defence programme in London or Milton Keynes.This position requires strong experience in incident management within complex environments.Responsibilities include leading incident management efforts, coordinating

Cyber Security Solution Architect – Disaster Recovery & Business Continuity (SC Cleared). The Cyber Security Solution Architect will be responsible for solution design, assurance and technical governance, working across engineering, security and platform teams to embed resilience into enterprise s

Candidates must hold a UK Security Clearance or be willing to obtain one.

Successful applicants will be required to be security cleared prior to appointment which can take a minimum 10 weeks. Cyber Security Solution Architect - Disaster Recovery & Business Continuity - Remote (SC Cleared). The Cyber Security Solution Architect will be responsible for solution design, assu

A leading technology consulting firm in the UK is seeking candidates passionate about cyber security for roles in the Public Sector. Applicants should have SC Clearance and can include Business Analysts, Service Designers, Security Architects, and SOC Analysts.

Security Architect (SC Cleared) – Containerisation & Virtualisation. Evaluate tools for container security scanning, runtime protection, secrets management, and network security. Our client, a reputable organisation, is hiring for a skilled SC Cleared Security Architect to lead the design and assu

We’re currently supporting a major UK transformation programme and are looking to connect with experienced security‑cleared contractors for a range of upcoming roles. Security Clearance is essential, please see below for requirements. Security clearance is essential.

As a leading provider of security-cleared talent, we are dedicated to ensuring a diverse and equitable recruitment process.

Senior Procurement Consultant (Security Cleared). Cross‑sector experience with Utilities/Defence and Security/Public Contract Regulations or equivalent; ability to lead and develop key procurement strategies or complaint documentation. Ideally hold Security Clearance (SC) – currently valid or co

Senior Business Analyst - Change & Transformation - Leading UK Asset Manager.Methods is urgently looking for a Senior Business Analyst on a contract basis.From now until end of March 26.Ideally no more than a week's notice.Work will be mostly hybrid, with travel to meetings 4–5 times during the co

DV Cleared Cyber Security Engineer. DV Cleared Cyber Security Engineer. Strong understanding of network security principles.

The role involves maintaining network security, solving networking issues, and supporting custom products.

A UK-based defence contractor is looking for a Security Assurance Manager to oversee cloud security assurance processes. The role involves maintaining security frameworks, conducting compliance audits, and ensuring adherence to UK MOD security standards. Candidates should have a strong background in

Turner & Townsend's Digital business unit are looking for a SC Cleared Business Analyst to join their team, to support and deliver digital and technology-enabled change across defence organisations and the supply chain.

You will be responsible for robust security controls and compliance with industry standards.