16 of 16 Part-Time Senior Security Engineer Jobs

Senior Application Security Engineer Hybrid From Any UK Hub (London, Swindon, Manchester, Glasgow, Belfast) Salary – Up to £100,000 Depending on experience + Discretionary Bonus + Additional Corporate Benefits Package The Client: A leading financial services firm requires a senior application security engineer! The … Role: As a Senior Application Security Engineer here, you'll sit within CTO, assisting a wide range of delivery teams in engineering secure solutions and protecting our member's money and data. As a senior security engineer, you will work cross-functionally to assess … risk and help deliver countermeasures that protect our member's data. You will work will engineering teams to create solutions that solve or remediate security problems. This will involve a range of activities, including (but not limited to) threat modelling, selection and configuration of DevSecOps tools, high-level and More ❯

Senior Cyber Security Engineer – Aberdeen or London Are you a highly motivated and skilled Senior Cyber Security Engineer looking for your next challenge? Join a dynamic team where you'll play a key role in safeguarding critical information assets. As a Senior Cyber … Security Engineer , you'll be responsible for identifying, evaluating, and reporting cybersecurity risks to ensure robust cyber assurance. Working alongside the Operational Security team, you'll carry out second-line assurance activities to uphold the confidentiality, integrity, availability, safety, privacy, and recovery of crucial information in line … working pattern, with at least three days onsite each week. What you’ll do Work with the Project Team, Operations and Information Systems (IS) Security team to support IS in the delivery of secure, reliable, and safe IS operations to the business Work across vendors, project teams and wider More ❯

integrity are components of a work ethic taken very seriously since the company was founded in 1959. Tradition is currently seeking to appoint a Senior IT Security Engineer to be based in our London office. Main responsibilities within the Senior IT Security Engineer position … include: Support Information Security risk management, compliance activities, and governance initiatives. Collaborate with stakeholders to identify, document, and mitigate security risks through effective controls. Work with key software and service vendors to manage security products and solutions. Lead and support security incident response, including investigation, containment … and remediation. Deploy, manage, and continuously improve security tools, including vulnerability management, identity management, and attack surface monitoring. Analyse emerging threats and vulnerabilities, leveraging threat intelligence to proactively mitigate risks Perform proactive threat hunting, research, and analysis, delivering actionable intelligence to IT and security teams Perform security More ❯

Senior Security Engineer – £75,000 – Hybrid Overview I am currently recruiting for a Senior Security Engineer to join a global digital marketing and technology agency specialised in online gaming, where you’ll be instrumental in shaping and securing the organisation’s digital landscape. If … you thrive in a dynamic, high-performance environment, this role offers the opportunity to lead impactful security initiatives across a complex, fast-evolving business. Role and Responsibilities Lead design, implementation and monitoring of robust security controls Oversee security architecture and operational tools across on-prem and cloud … environments Manage incident response, threat investigation, and vulnerability mitigation Conduct risk assessments, audits, and third-party security reviews Collaborate with teams to prioritise remediation, security best practices, and awareness Provide expert technical guidance and detailed reporting on risks and improvement plans Essential Skills and Experience Strong communication and More ❯

Senior Offensive Security Engineer Salary: £90,000 - £110,000 per annum Location: UK - Remote You’ll be responsible for identifying and mitigating security vulnerabilities across software products through a combination of secure code review, penetration testing, security assessments, and the development of custom tooling. This … close collaboration with engineering teams to embed secure development practices throughout the software lifecycle – ensuring potential risks are addressed early in the development process. Senior Offensive Security Engineer – Responsibilities: Conduct deep technical offensive security assessments against complex, distributed systems to uncover critical vulnerabilities across cloud, web … party integrations. Build and maintain automation and tooling to scale offensive testing across products and teams. Operate as a subject matter expert in offensive security, supporting risk-based product design decisions and architecture reviews. Contribute to threat modelling, red teaming strategy, and secure development practices throughout the product lifecycle. More ❯

Role: Senior Security Engineer Location: From home, in the UK What you’ll do We are actively recruiting for a Senior Security Engineer on a 3-month contract to manage CrowdStrike and AttackIQ tasks for our client. Some of the responsibilities will include: Manage … AttackIQ created scenarios and install AttackIQ on new hosts Troubleshoot AttackIQ issues Use threat hunting templates to perform threat hunting within Splunk and Defender Security assessments and GRC policy documentation such as USB device control, threat hunting reports, etc Review prevention policies when CrowdStrike rolls out changes to their … operating model What you’ll bring Security engineering experience on CrowdStrike, and ideally AttackIQ Who we are We’re a company on a mission to protect the promise of cyber resilience. From banking and retail to food delivery and manufacturing, our team of passionate cyber defenders are committed to More ❯

Job title: Senior Security Engineer Client: Fintech trading firm Salary: Up to £175,000 + Bonus/Benefits Location: London (hybrid) Experience level : 5+ years An elite systematic trading firm is seeking a Security Engineer to play a key role in strengthening their global security posture. As a subject matter expert, you’ll lead initiatives across network, cloud, data, and system security guiding critical IT projects, running threat models for complex systems, and building automation to validate controls and resilience. You'll act as the escalation point for Security Operations, driving swift … resolution of advanced threats and shaping the long-term security roadmap. This is a high-impact role for a proactive, driven security expert ready to take the lead in a cutting-edge fintech environment. Key Responsibilities Enhance security across critical domains including network, system, cloud, email, and More ❯

Senior Cloud & Apps Security Engineer - £80,000 - £110,000 + Bonus + Benefits London/Remote AWS, Azure, Kubernetes, Service Mesh, API gateways, and API security, Python, JavaScript, GoLang, Terraform, CloudFormation (AWS), and Azure Resource Manager (ARM) templates. Are you passionate about cloud security and … eager to engineer robust security solutions within AWS and Azure environments? We are seeking Senior Cloud & Application Security Engineers to help our client define and implement its cloud security strategy. If you're an experienced Security Engineering professional excited to work with cutting-edge … technology and collaborate with diverse teams, we want to hear from you! Key Skills: Strong understanding of cloud and application security concepts, including secure coding practices, threat modeling, vulnerability management, and access control mechanisms. Experience with AWS, Azure, Kubernetes, Service Mesh, API gateways, and API security (authentication and More ❯

Senior Product Security Engineer Location: London Salary: £200,000+ A leading global quantitative investment firm is seeking a Senior Product Security Engineer to strengthen the security of its trading systems, cloud infrastructure, and business applications. This is a hands-on, high-impact role … working across a modern tech stack in a fast-paced environment. Key Responsibilities Implement and maintain security controls across low-latency systems and multi-cloud platforms (AWS, Azure, Alibaba Cloud) Collaborate with engineering teams to integrate secure coding practices into the SDLC Conduct threat modeling, vulnerability assessments, and code … reviews Automate security processes through CI/CD integration using SAST, DAST, and related tools Assess third-party vendors and enforce security standards Mentor teams on security architecture and best practices What We’re Looking For Experience in product or application security roles Strong development background More ❯

Senior Cyber Security Engineer (SIEM/XDR) Permanent Salary: up to £65,000 plus bonus Location: Sheffield Working arrangement: Hybrid (3 Days on Site 2 from home, 9-5 Mon-Fri) Your new company I’m on the lookout for a talented cyber security engineer based in Sheffield. This is a fantastic opportunity to progress your cyber security career with a renowned UK organisation. This role requires eligibility to obtain SC and NPPV3 clearance, as a result it does not offer visa sponsorship. Your new role will involve Working with clients on Splunk … on behalf of this organisation’s clients Working with this organisation’s clients to design, configure and integrate SIEM and XDR platforms Advising on security engineering best practice to clients Act as 3rd line escalation point for analysts Testing implementations and integrations Creating surrounding documentation where required What you More ❯

Senior IT Security Engineer - Remote (Global) - Competitive Salary + Token Package Plexus has partnered with a well-funded, innovative startup (backed by nearly $100M ) that's redefining security for Proof-of-Stake blockchains and pioneering Bitcoin staking solutions. They're seeking a talented Senior IT … Security Engineer to play a key role in building the next generation of blockchain security. Responsibilities: Administer cloud infrastructure (AWS, GCP, Azure), Google Workspace, SSO, and SaaS apps. Evaluate, integrate, and manage security tools (e.g., SIEM, endpoint protection). Oversee IT/security vendors and ensure … compliance. Support security incident response and investigations. Requirements: IT admin experience, ideally in a startup with a global remote team. Hands-on with MDM, Google Workspace, SSO, and cloud SaaS, focused on security and global access. Good understanding of blockchain security risks. Proficient in scripting (Python, Bash More ❯

Senior Network Security Engineer Leading global manufacturing company is looking for a Senior Network Security Engineer to join their growing Network Security Engineering team. The successful candidate will design and implement network security solutions connecting on-premises and public cloud environments, with … very technical role and will play a key part in securing the network infrastructure. London 5 DAYS A WEEK. Responsibilities: Design and deploy network security solutions across cloud and on-premises environments. routing and switching protocols network performance. Analyze operational needs and develop innovative solutions to strengthen network security. … Required: Hands-on experience within enterprise network security solutions. Advanced knowledge of routing and switching protocols. Deep understanding of firewalls. More ❯

Senior Product Security Engineer Compensation: Up to £250k TC Location: London WFH: 4 days in office, 1 from home I'm currently working with one of the most successful and modern Quant Trading firms in London. Being a top 5 performer across various markets and boasting yearly … competitors. Their modern and innovative approach means no legacy work to deal with and state of the art tech. They're looking for a Senior Product Security Engineer to develop and implement security controls across all of their trading infrastructure and cloud services. This a widely … with various engineering and product teams on greenfield initiatives to secure large scale, low latency systems and cloud platforms. Requirements 6+ years in product security Strong object orientated programming experience across languages such as Python, C++, Java, Go or Rust Extensive cloud experience Knowledge of threat modelling and risk More ❯

Senior Cyber Security Engineer London – Hybrid working 3 days per week in the office £80,000 - £125,000 + benefits Fantastic new permanent opportunity for an experienced Cyber Security Engineer with this leading player within the financial services sector. You will be joining a leading … a market-leading digital offering with customer experience at its heart. You will work with the wider engineering team and be instrumental in ensuring security is embedded into the design and development process. This is an exciting and key role, partnering with business aligned engineering and product teams, to … ensure a collaborative team culture is at the heart of what they do. Main responsibilities: Provision of subject matter expertise on security systems and engineering patterns. Development and implementation of protocols, algorithms, and software applications to protect sensitive data and systems. Management and protection of secrets, ensuring that they More ❯

Senior Product Security Engineer - Up to £250,000 We are working with one of the top buy side firms in the city who are a leader in blending modern technology with the most performant financial systems, revolutionising themselves to become a key player in London. Currently, they … are undertaking an extremely strategic greenfield remit of work that involves building out several brand-new projects with a focus on security and scalability. This role focuses on the safety of diverse systems across cloud, business applications, and core infrastructure. You will lead automated security processes, influence architecture … and oversee key security initiatives. The position involves close collaboration with teams spanning IT, cloud, and engineering. You will ensure protection across high-speed environments within a unique environment in the hedge fund world (2 days WFH). In addition to hands-on security implementation, you would be More ❯

Network Security Engineer – Peterborough (Hybrid) - £75,000 - £100,000 + Bonus + Benefits We’re looking for a skilled Network Engineer to join our clients dynamic team. In this role, you’ll design, implement, and maintain critical networking infrastructure while driving automation and efficiency. Key Responsibilities: Oversee … the design, implementation, and maintenance of Cisco ACI infrastructure. Develop automation solutions for network tasks using Python, Ansible, and Terraform. Engineer and support enterprise-grade network systems, including Cisco routers, Nexus data centre switches, and wireless LAN controllers. Configure and manage Palo Alto firewalls, ensuring adherence to robust security … call support. What You Bring: Extensive experience with Cisco networking, including routers, switches, and wireless infrastructure. Deep understanding of Palo Alto firewalls, Panorama, and security tools such as Cisco ISE. Hands-on knowledge of F5 Big-IP, routing protocols (BGP, OSPF), and network monitoring with SolarWinds. Strong familiarity with More ❯