101 to 125 of 184 Application Security Jobs in the UK

Mobile Security Engineer Work Location: Bristol (2days) Your Profile Essential Skills/Knowledge/Experience Experience of Mobile platform security, threat modelling and mitigation techniques Capable of conducting regular reviews of our mobile application security posture using your hands-on experience Develop and maintain pen-testing security tools, scripts, policies and procedures In depth knowledge More ❯

Mobile Security Engineer Work Location: Bristol (2days) Your Profile Essential Skills/Knowledge/Experience Experience of Mobile platform security, threat modelling and mitigation techniques Capable of conducting regular reviews of our mobile application security posture using your hands-on experience Develop and maintain pen-testing security tools, scripts, policies and procedures In depth knowledge More ❯

on the strategic direction and vision of the region and company as a whole. Role and Responsibilities Assist in guiding the strategic vision, growth plans, and execution of the security practice. Oversee client engagements for the practice including ensuring timeliness and quality of deliverables. Develop and maintain standardized processes, methodologies, and tools to improve efficiency and consistency. Manage budgets … resources, and timelines to ensure project success. Managing security strategy development and defining roadmaps in alignment with client business objectives. Perform security program assessments against established frameworks and best practices such as NIST CSF, CIS, PCI DSS, HIPAA, ISO, SOC 1/2 Prepare the clients for security audits such as PCI DSS, ISO 27k, SOC . … Partner with the Client Account to understand client requirements and able to design appropriate solutions and offers. Identify improvement opportunities to enhance/optimize security, decrease costs, and increase client value. Translate client requirements into solutions by leveraging SMEs to create value for our clients and Crosslake. Develop strong long term client relationships and become recognized as a trusted More ❯

you to achieve success faster and more effectively. Role Overview As a Senior Software Engineer, you will play a pivotal role in architecting and developing our next-generation web application and API. This role requires technical leadership, hands-on development, and mentoring of junior developers. You will drive the adoption of best practices, ensuring scalability, security, and performance. … record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem-Solving: Ability to troubleshoot complex technical issues, with a proactive and solution-oriented More ❯

you to achieve success faster and more effectively. Role Overview As a Senior Software Engineer, you will play a pivotal role in architecting and developing our next-generation web application and API. This role requires technical leadership, hands-on development, and mentoring of junior developers. You will drive the adoption of best practices, ensuring scalability, security, and performance. … record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem-Solving: Ability to troubleshoot complex technical issues, with a proactive and solution-oriented More ❯

architectural oversight and technical debt management Establish and drive comprehensive quality culture including TDD/BDD practices, testing standards, automated quality gates, and team code review excellence Define team security standards ensure team compliance governance, and drive security-first culture within the engineering team Stay technically current through code reviews, architectural discussions, strategic technical involvement and ensure alignment … dynamics Technical Skills Frontend Strategy: Strategic understanding of modern UI frameworks (e.g. Angular, React, Vue.js, Blazor) Backend Leadership: Strong understanding of .NET Core, C#, ASP.NET Core Web APIs, REST, application architectures, and distributed systems Data Architecture: Strategic knowledge of SQL, NoSQL and data architecture decisions CI/CD Strategy: Define team CI/CD strategy, establish team governance frameworks … and ensure adoption of deployment best practices across the team Infrastructure as Code: Infrastructure as Code with Terraform, ARM Templates or AWS CloudFormation/CDK Observability Strategy: DataDog, Application Insights or Amazon CloudWatch implementation with comprehensive observability strategy and cloud governance Cloud Strategy: Strategic SAAS using Azure (Functions, Queue, Blob Storage, VMs, etc) or AWS (Lambda, SQS/SNS More ❯

architectural oversight and technical debt management Establish and drive comprehensive quality culture including TDD/BDD practices, testing standards, automated quality gates, and team code review excellence Define team security standards ensure team compliance governance, and drive security-first culture within the engineering team Stay technically current through code reviews, architectural discussions, strategic technical involvement and ensure alignment … dynamics Technical Skills Frontend Strategy: Strategic understanding of modern UI frameworks (e.g. Angular, React, Vue.js, Blazor) Backend Leadership: Strong understanding of .NET Core, C#, ASP.NET Core Web APIs, REST, application architectures, and distributed systems Data Architecture: Strategic knowledge of SQL, NoSQL and data architecture decisions CI/CD Strategy: Define team CI/CD strategy, establish team governance frameworks … and ensure adoption of deployment best practices across the team Infrastructure as Code: Infrastructure as Code with Terraform, ARM Templates or AWS CloudFormation/CDK Observability Strategy: DataDog, Application Insights or Amazon CloudWatch implementation with comprehensive observability strategy and cloud governance Cloud Strategy: Strategic SAAS using Azure (Functions, Queue, Blob Storage, VMs, etc) or AWS (Lambda, SQS/SNS More ❯

with a strong applications background to play a pivotal role in shaping enterprise-level solutions for a forward-thinking organisation. You'll design and implement scalable, secure, and modern application architectures that directly support business goals. This is a permanent role offering the chance to influence strategy, guide development teams, and work with the latest technologies in a supportive … Lead architecture reviews, offering guidance and mentoring to technical teams. Evaluate, recommend, and implement tools, frameworks, and technologies that align with business needs. Ensure alignment with enterprise architecture and security policies. Document architecture designs, workflows, and technical specifications. Troubleshoot and resolve complex architectural challenges. Support modernisation, migration, and integration initiatives across the application landscape. Software Architect Requirements Degree … languages such as Java, C#, Python, or JavaScript/TypeScript. Hands-on experience with cloud platforms (in particular Azure) Excellent communication and stakeholder engagement skills. Desirable: Experience in enterprise application integration (EAI). Knowledge of data modelling and application security best practices. Certifications such as TOGAF, AWS Certified Solutions Architect, or Microsoft Certified: Azure Solutions Architect. What More ❯

C# and Azure Development C# Development, .NET core/.NET Framework Full understanding of Object Orientated and SOA design patterns Azure: APIM, including extensive use of policies, caching and security aspects Azure Functions Azure AI Search, using API and designing indexes Azure Blob and Table Storage used via Rest APIs Azure AD, Enterprise apps and interactions via Graph API … Postman GitHub or similar Containerization tech: Docker, Kubernetes Relevant Microsoft Certifications Essential functions of the job Development, Design, Architecture Ensure product managers and stakeholders requirements are met through development application solutions. Define and design good architectural solutions for implementation within agreed timeframes and predictable costs. Utilize, where appropriate, distributed and decoupled architectures, utilizing APIs and event- based architectures. Design … and maintain coding standards ensuring best practices are followed. Advocate for continuous improvement to development processes and code quality. Governance and Compliance Contribute to and follow coding standards and security policies, maintaining and supporting compliance with security standards/guidelines such as PCI v4, OWASP etc. Ensure Senior and Junior Developers are well trained in application security More ❯

strong Cybersecurity practices throughout the development lifecycle. Lead and mentor a small team of Cybersecurity Engineers . Design and deliver secure cloud architectures and solutions. Ensure compliance with key security standards and regulations (NCSC, ISO, NIST, GDPR, etc.). Support Continuous Security, CI/CD, and DevSecOps processes. Key Requirements: Proven experience designing and implementing secure cloud solutions. … Strong understanding of application and infrastructure architecture. Background in network and web application security (OSI, TCP/IP, OWASP, PKI, TLS). Knowledge of governance, risk, and compliance practices. Relevant certifications (OSCP, CREST, TIGER, etc.) are beneficial. Benefits Include: Up to £120,000 base salary + performance bonus Healthcare and dental insurance Pension scheme Minimum 33 days More ❯

practices for coding, design patterns, performance optimization, and cloud-native development.Manage and optimize microservices architecture for scalability, availability, and maintainability.Oversee integration of front-end (React) with back-end APIs.Ensure application security, performance, and reliability through effective testing and monitoring strategies.Drive Agile practices (Scrum/Kanban), CI/CD, and DevOps adoption within the team. Required Skills & Qualifications … of containerization (Docker, Kubernetes).Proficiency in relational and NoSQL databases (MySQL, PostgreSQL, MongoDB, etc.).Knowledge of CI/CD tools (Jenkins, GitLab CI, GitHub Actions, etc.).Strong understanding of security principles and performance tuning.Excellent problem-solving, communication, and leadership skills. Nice to Have Experience with GraphQL and API Gateway.Exposure to Kafka, RabbitMQ, or other messaging frameworks.Familiarity with automated testing More ❯

About the Team Security is at the foundation of OpenAI's mission to ensure that artificial general intelligence benefits all of humanity. The Security team protects OpenAI's technology, people, and products. We are technical in what we build but are operational in how we do our work, and are committed to supporting all products and research at … OpenAI. Our Security team tenets include: prioritizing for impact, enabling researchers, preparing for future transformative technologies, and engaging a robust security culture. About the Role As a Security Engineer you will join our OpenAI engineers and researchers in building, operating and securing transformational AI technologies. This role will focus on all aspects of Detection & Response, including infrastructure … and operations, and will also contribute to the Security team as a strong generalist. In this role, you will: Drive projects in all major security verticals including: AppSec, InfraSec, OffSec and Detection and Response Innovate to solve novel security problems Collaborate on cutting-edge AI research, and use AI to improve OpenAI's Security posture This More ❯

of applications to modern Python frameworks Development of automated unit and component tests Contribution to Camlin’s software development strategies Participation in Agile Scrum and design meetings Governance of application CI/CD pipelines Design and development of web application security Technical mentorship of less experienced engineers What you'll need: At least 6 years of experience … designing and implementing REST APIs (Fast API) Experience working with SQL databases Practical knowledge of Linux (CLI, bash) Experience mentoring and leading engineering team Practical knowledge of modern web application deployment infrastructures Fluency in English, written and verbal Strong knowledge of SDLC Nice to have but not essential: Bachelor's degree in computer software engineering or equivalent Experience building More ❯

of applications to modern Python frameworks Development of automated unit and component tests Contribution to Camlin’s software development strategies Participation in Agile Scrum and design meetings Governance of application CI/CD pipelines Design and development of web application security Technical mentorship of less experienced engineers What you'll need: At least 6 years of experience … designing and implementing REST APIs (Fast API) Experience working with SQL databases Practical knowledge of Linux (CLI, bash) Experience mentoring and leading engineering team Practical knowledge of modern web application deployment infrastructures Fluency in English, written and verbal Strong knowledge of SDLC Nice to have but not essential: Bachelor's degree in computer software engineering or equivalent Experience building More ❯

Internal Pentester to join an international client secure their networks. This critical role, based in London (2-3 days per week), requires deep expertise in conducting manual and automated security assessments across networks, applications, cloud platforms, and infrastructure. You will identify and exploit vulnerabilities, simulate real-world attacks, and deliver actionable remediation guidance to strengthen defenses. Key Responsibilities: Plan … and execute penetration tests - perform manual and automated testing across applications, APIs, internal/external networks, cloud environments, and Active Directory. Identify, exploit, and validate vulnerabilities - uncover security flaws such as insecure authentication, authorization bypasses, misconfigurations, and privilege escalation paths. Simulate real-world attacks - use adversary techniques and offensive tools to test the resilience of networks, systems, and security controls. Develop detailed reports - produce both technical and executive-level documentation outlining findings, risk impact, and remediation steps What You Will Ideally Bring: Application security knowledge - strong grasp of OWASP Top 10 and API security issues.Contract Details: Hands-on pentesting experience - 3-7+ years in penetration testing, red teaming, or offensive security across networks More ❯

Internal Pentester to join an international client secure their networks. This critical role, based in London (2-3 days per week), requires deep expertise in conducting manual and automated security assessments across networks, applications, cloud platforms, and infrastructure. You will identify and exploit vulnerabilities, simulate real-world attacks, and deliver actionable remediation guidance to strengthen defenses. Key Responsibilities: Plan … and execute penetration tests - perform manual and automated testing across applications, APIs, internal/external networks, cloud environments, and Active Directory. Identify, exploit, and validate vulnerabilities - uncover security flaws such as insecure authentication, authorization bypasses, misconfigurations, and privilege escalation paths. Simulate real-world attacks - use adversary techniques and offensive tools to test the resilience of networks, systems, and security controls. Develop detailed reports - produce both technical and executive-level documentation outlining findings, risk impact, and remediation steps What You Will Ideally Bring: Application security knowledge - strong grasp of OWASP Top 10 and API security issues.Contract Details: Hands-on pentesting experience - 3-7+ years in penetration testing, red teaming, or offensive security across networks More ❯

Information Security Analyst - £80K Our client is a leading Software-as-a-Service (SaaS) development company – They build bespoke Big Data solutions for financial services, pharma and ecommerce client around the world. Offer great remote/hybrid flexible working, they’re looking for an experienced Cyber Security Analyst to join them. You’ll work directly with the CSO … and SOC team to create and deliver the security strategy, information security framework and risk mitigation activity for the company. You’ll have the chance to be involved in everything from security assessments and threat modelling to triage of security events, ownership of policies ad procedures and even working with development and engineering teams to drive … application security. Requirements: Proven experience as an Information/Cyber Security Analyst Certified Information Security Manager (CISM) or Certified Information Systems Auditor (CISA) or equivalent Extensive cyber and information security (InfoSec) experience Experience of working in demanding, environments Good undersyanding of Windows, Cloud and IT infrastructure Excellent communication skills More ❯

Information Security Analyst - £80K Our client is a leading Software-as-a-Service (SaaS) development company – They build bespoke Big Data solutions for financial services, pharma and ecommerce client around the world. Offer great remote/hybrid flexible working, they’re looking for an experienced Cyber Security Analyst to join them. You’ll work directly with the CSO … and SOC team to create and deliver the security strategy, information security framework and risk mitigation activity for the company. You’ll have the chance to be involved in everything from security assessments and threat modelling to triage of security events, ownership of policies ad procedures and even working with development and engineering teams to drive … application security. Requirements: Proven experience as an Information/Cyber Security Analyst Certified Information Security Manager (CISM) or Certified Information Systems Auditor (CISA) or equivalent Extensive cyber and information security (InfoSec) experience Experience of working in demanding, environments Good undersyanding of Windows, Cloud and IT infrastructure Excellent communication skills More ❯

are hiring - Java API- RESTful Web Services - Go lang (mandatory) UK, Bristol only 3 days/week mandatory Project duration 12 months About the team Our team isaccountable for security within the mobile channel. Weprovide a suite of mobile security components,that provides an all-round security posture in mobile appsincluding associated services (penetration testing, obfuscation, consultancy … to meet demanding NFRs Desirable knowledge & experience Experience of JAVA development Experience with cryptography frameworks in go and JAVA Experience with SQL databases Experience and/or Interest in application security and/or mobile app security. Experience with cloud environments including DevOps functions and pipelines More ❯

This global insurance firm seeks a Cyber Security Consultant to work on large IT and business change projects across the company. You will work with senior stakeholders and technical teams, advising on security requirements, assessing security controls, managing cyber … assessments and suggesting remediations. The successful candidate will have a technical security background with good experience of conducting security assessments, the ability to review architectural diagrams, good AppSec or DevSecOps experience, and knowledge of cloud security (any platform). The role would be suit someone who is working as a senior security consultant or security More ❯

This global insurance firm seeks a Cyber Security Consultant to work on large IT and business change projects across the company. You will work with senior stakeholders and technical teams, advising on security requirements, assessing security controls, managing cyber … assessments and suggesting remediations. The successful candidate will have a technical security background with good experience of conducting security assessments, the ability to review architectural diagrams, good AppSec or DevSecOps experience, and knowledge of cloud security (any platform). The role would be suit someone who is working as a senior security consultant or security More ❯

IT Security Engineer- £70K Our client is a leading London professional services and law firm, they work with client in technology, financial services, pharma and ecommerce around the world. Offer great remote/hybrid flexible working, they’re looking for an experienced InfoSec/Cyber Security Engineer to join them. You’ll work directly with the CSO and … SOC team to create and deliver the security strategy, information security framework and risk mitigation activity for the company. You’ll have the chance to be involved in everything from security assessments and threat modelling to triage of security events, ownership of policies and procedures and even working with development and engineering teams to drive application security. Requirements: Proven experience as an Information/Cyber Security Engineer Extensive and broad cyber and information security (InfoSec) experience Knowledge of concepts such as ethical hacking, network security, penetration testing and cryptography etc Good understanding of Windows, Cloud and IT infrastructure Excellent communication skills More ❯

IT Security Engineer- £70K Our client is a leading London professional services and law firm, they work with client in technology, financial services, pharma and ecommerce around the world. Offer great remote/hybrid flexible working, they’re looking for an experienced InfoSec/Cyber Security Engineer to join them. You’ll work directly with the CSO and … SOC team to create and deliver the security strategy, information security framework and risk mitigation activity for the company. You’ll have the chance to be involved in everything from security assessments and threat modelling to triage of security events, ownership of policies and procedures and even working with development and engineering teams to drive application security. Requirements: Proven experience as an Information/Cyber Security Engineer Extensive and broad cyber and information security (InfoSec) experience Knowledge of concepts such as ethical hacking, network security, penetration testing and cryptography etc Good understanding of Windows, Cloud and IT infrastructure Excellent communication skills More ❯

. Desirable Skills/Experience: Experience in Java development . Familiarity with cryptography frameworks in Go or Java . Working knowledge of SQL databases . Interest or experience in application security or mobile app security . Exposure to cloud environments and DevOps pipelines . Why Join Us: Work on innovative backend solutions in a cutting-edge technology More ❯

A leading fintech company is seeking aLead AppSec Engineerto join their established team. Youll be instrumental in embedding security into every stage of the software development lifecycleguiding engineers, shaping best practices, and driving secure, scalable solutions across our platform. Key Responsibilities: Security Advisory: Serve as the go-to expert for application security across engineering More ❯