101 to 125 of 170 Application Security Jobs in the UK

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 ❯

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 ❯

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 ❯

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 ❯

. 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 ❯

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 ❯

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 ❯

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 ❯

Hibernate, and REST APIs. Solid understanding of microservices architecture. Knowledge of frontend frameworks (React/Angular). Familiarity with CI/CD pipelines, Docker, and Kubernetes. Strong understanding of application security and performance optimisation. Experience with JUnit, Mockito , or other testing frameworks. Good communication and collaboration skills. If you are interested or would like to know more, please More ❯

testing tools such as Selenium, Playwright, Docker, Postman. GitHub or similar Essential functions of the job Development, Design, Architecture Ensure product managers and stakeholders requirements are met through development application solutions. Work to defined architectures and contribute to their design. Work with distributed, decoupled architectures, utilizing APIs and event-based architectures. Develop and maintain robust and scalable applications. Write … improving performance. Follow and support coding standards ensuring best practices are followed. Advocate for continuous improvement to development processes and code quality. Governance and Compliance Follow coding standards and security policies, maintaining and supporting compliance with security standards/guidelines such as PCI v4, OWASP etc. Keep training and knowledge on application security practices up to More ❯

NFRs Desirable Skills/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 ❯

A leading fintech company is seeking a Lead AppSec Engineer to 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 ❯

one of our client based at Leeds, UK. This is a Permanent/Fulltime and hybrid position . Below is the job description for your reference. Please share your application once you are interested. Role: Senior Dotnet Developer(Serverless and AWS) Mode: Fulltime/Permanent Location: Leeds, UK Hybrid Job Description: Position Overview We are seeking an experienced AWS … and RESTful APIs. Implement and manage CI/CD pipelines using Azure DevOps, or GitHub Actions,. Apply Infrastructure as Code (IaC) using AWS CDK, Terraform, or CloudFormation. Ensure application security, monitoring, and logging using AWS CloudWatch, X-Ray, and IAM best practices. Collaborate with cross-functional teams to define, design, and deliver high-quality solutions. (Optional) Contribute More ❯

and RESTful APIs. Implement and manage CI/CD pipelines using Azure DevOps, or GitHub Actions,. Apply Infrastructure as Code (IaC) using AWS CDK, Terraform, or CloudFormation. Ensure application security, monitoring, and logging using AWS CloudWatch, X-Ray, and IAM best practices. Collaborate with cross-functional teams to define, design, and deliver high-quality solutions. (Optional) Contribute More ❯

and RESTful APIs. Implement and manage CI/CD pipelines using Azure DevOps, or GitHub Actions,. Apply Infrastructure as Code (IaC) using AWS CDK, Terraform, or CloudFormation. Ensure application security, monitoring, and logging using AWS CloudWatch, X-Ray, and IAM best practices. Collaborate with cross-functional teams to define, design, and deliver high-quality solutions. (Optional) Contribute More ❯

and RESTful APIs. Implement and manage CI/CD pipelines using Azure DevOps, or GitHub Actions,. Apply Infrastructure as Code (IaC) using AWS CDK, Terraform, or CloudFormation. Ensure application security, monitoring, and logging using AWS CloudWatch, X-Ray, and IAM best practices. Collaborate with cross-functional teams to define, design, and deliver high-quality solutions. (Optional) Contribute More ❯

and RESTful APIs. Implement and manage CI/CD pipelines using Azure DevOps, or GitHub Actions,. Apply Infrastructure as Code (IaC) using AWS CDK, Terraform, or CloudFormation. Ensure application security, monitoring, and logging using AWS CloudWatch, X-Ray, and IAM best practices. Collaborate with cross-functional teams to define, design, and deliver high-quality solutions. (Optional) Contribute More ❯

Front End Developer This is a fantastic opportunity for an experienced Front End or Full Stack Developer with a robust background in commercial web and application development, to join the talented team at Bolser, delivering exceptional digital solutions for some of the world’s biggest brands, including Microsoft, Xbox, Portakabin, RAF Museum, and the Football Foundation. You will be … Collaborate with designers to deliver responsive, accessible UI experiences • Work closely with teammates using pair programming, code reviews, and TDD • Contribute to CI/CD pipelines, database design, and application security • Help maintain a collaborative, inclusive, and high-performing dev culture Skills and Qualifications • 2 years + experience as a Front End or Full Stack Developer • Proficient in More ❯