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Contract Developer - Node.js development, REST API design, and SIP-based communications * Duration: 3 months (Outside IR35) * Location: Bracknell / Hybrid Contract Developer with deep expertise in Node.js development, REST API design, and SIP-based communications. This role is crucial for supporting the migration of legacy device management, call control, and configuration workflows to a secure, scalable cloud environment. * Cloud Migration & Refactoring: Analyse existing applications to identify dependencies on on-prem infrastructure and design cloud-native solutions. Refactor services to enhance scalability and reliability in the cloud. * Service & API Development: Develop and maintain secure REST APIs for functionalities such as SIP authentication, call control, and real-time data interactions.
Contract Developer - Node.js development, REST API design, and SIP-based communications * Duration: 3 months (Outside IR35) * Location: Bracknell / Hybrid Contract Developer with deep expertise in Node.js development, REST API design, and SIP-based communications. This role is crucial for supporting the migration of legacy device management, call control, and configuration workflows to a secure, scalable cloud environment. * Cloud Migration & Refactoring: Analyse existing applications to identify dependencies on on-prem infrastructure and design cloud-native solutions. Refactor services to enhance scalability and reliability in the cloud. * Service & API Development: Develop and maintain secure REST APIs for functionalities such as SIP authentication, call control, and real-time data interactions.
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Job Description: Responsibilities Understanding and Knowledge of Technologies Bookassist Products You should have a broad knowledge of Bookassist products & the technologies used to build them. When you lack specific knowledge you should be able to acquire it to make changes and improvements to the product. Understanding Build You should understand the build process for Bookassist software, and be involved writing and maintaining for products you own Full control of the development environment set up You should have a good understanding and control of the local environment set up, including remote development.
Job Description: Responsibilities Understanding and Knowledge of Technologies Bookassist Products You should have a broad knowledge of Bookassist products & the technologies used to build them. When you lack specific knowledge you should be able to acquire it to make changes and improvements to the product. Understanding Build You should understand the build process for Bookassist software, and be involved writing and maintaining for products you own Full control of the development environment set up You should have a good understanding and control of the local environment set up, including remote development.
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Full Stack Developer - Hybrid (London & Bristol) - Circa £600 per day inside ir35 - 3 months All applicants must hold an active SC clearance. * Develop and maintain web applications: Design, code, test, and deploy scalable and efficient web applications using modern technologies. * Collaborate with cross-functional teams: Work closely with designers, product managers, and other developers to create seamless user experiences. * Implement front-end solutions: Create responsive and interactive user interfaces using HTML, CSS, JavaScript, and front-end frameworks such as React, Angular, or Vue.js and TypeScript Develop back-end services * Build and maintain server-side logic, databases, and APIs using Spring and Java * Experience of Cloud Native microservices architectures deployed on Kubernetes hosted on Red Hat OpenShift
Full Stack Developer - Hybrid (London & Bristol) - Circa £600 per day inside ir35 - 3 months All applicants must hold an active SC clearance. * Develop and maintain web applications: Design, code, test, and deploy scalable and efficient web applications using modern technologies. * Collaborate with cross-functional teams: Work closely with designers, product managers, and other developers to create seamless user experiences. * Implement front-end solutions: Create responsive and interactive user interfaces using HTML, CSS, JavaScript, and front-end frameworks such as React, Angular, or Vue.js and TypeScript Develop back-end services * Build and maintain server-side logic, databases, and APIs using Spring and Java * Experience of Cloud Native microservices architectures deployed on Kubernetes hosted on Red Hat OpenShift
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F++ Developer
F++ Developer
TEKsystems
Central London, London
100000.00 - 140000.00 GBP/Salary + Bonus and Pension Contribution
Description This role is an exciting opportunity to be part a large multi-asset eTrading development team. A successful candidate is expected to: Design, build and implement pricing systems. Work with teams spread across infrastructure, development, support, test and the front office. Participate in the development of all aspects of product delivery including design documents, functional specifications and component building. Make contributions to the evolving architecture. Conduct issue and risk identification, management and resolution. This is a key position which will play pivotal role in the development of the FX platform. Skills * C++ * stl * boost * FX * FIX * exchange connectivity * Market Access * architecture * multithreading * low latency Job Title: F++ Developer Location: London, UK Rate/Salary: 100000.00 - 140000.00 GBP Yearly Job Type: Permanent
Description This role is an exciting opportunity to be part a large multi-asset eTrading development team. A successful candidate is expected to: Design, build and implement pricing systems. Work with teams spread across infrastructure, development, support, test and the front office. Participate in the development of all aspects of product delivery including design documents, functional specifications and component building. Make contributions to the evolving architecture. Conduct issue and risk identification, management and resolution. This is a key position which will play pivotal role in the development of the FX platform. Skills * C++ * stl * boost * FX * FIX * exchange connectivity * Market Access * architecture * multithreading * low latency Job Title: F++ Developer Location: London, UK Rate/Salary: 100000.00 - 140000.00 GBP Yearly Job Type: Permanent
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L2 AWS DevOps Support 12 months Hursley - onsite Active SC clearance required, eligible candidates will be considered Inside IR35 - Umbrella only We are seeking a skilled and experienced Level 2 AWS DevOps Engineer to join our dynamic team. The ideal candidate will have a strong background in cloud computing, particularly with Amazon Web Services (AWS), and expertise in DevOps practices. * **Must have 5 years unbroken UK residency** * Strong communication skills and a fast-learner. * Experience of provisioning and managing AWS infrastructure. * Linux administration. * Experience working in a secure environment and the ability to adhere to security principles. * Familiarity with the principles of immutable infrastructure and ability to put these into practice. * Kubernetes cluster management including use of kops, Helm.
L2 AWS DevOps Support 12 months Hursley - onsite Active SC clearance required, eligible candidates will be considered Inside IR35 - Umbrella only We are seeking a skilled and experienced Level 2 AWS DevOps Engineer to join our dynamic team. The ideal candidate will have a strong background in cloud computing, particularly with Amazon Web Services (AWS), and expertise in DevOps practices. * **Must have 5 years unbroken UK residency** * Strong communication skills and a fast-learner. * Experience of provisioning and managing AWS infrastructure. * Linux administration. * Experience working in a secure environment and the ability to adhere to security principles. * Familiarity with the principles of immutable infrastructure and ability to put these into practice. * Kubernetes cluster management including use of kops, Helm.
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Lead Full Stack Engineer
Lead Full Stack Engineer
Lynx Recruitment Limited
SW1E, South West London
From £90,000 to £120,000 per annum
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Excellent opportunity for Software devs / Dev Ops engineers to join a global leader in IT services and gold level partner of the UK MOD. This role will play a critical role in the modernisation of key government infrastructure and pipelines and is ideal for ambitious professionals with strong aspirations to grow and take advantage of a fast track career progression plan. On Offer -Salary £45k-£50k D.O.E -Security Clearance Bonus 10% -Company Bonus 5% -Benefits package 26 days annual leave plus stats, 10% pension, Life assurance etc -Modern tech stack -1st class skill up ops including new certification support -Fast-Track career progression plan become a senior engineer within 12-18 months -Plus more What do I need? -Skills with CI/CD pipelines (Ideally via Azure DevOps but AWS or GCP is also considered) -Hands on with Terraform, Ansible or similar tools and tech
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Location: London - 1x a month Salary: Up to £120,000 (D.O.E) + benefits Fruition Group are partnering with a high-growth Insurtech unicorn that's scaling its engineering function. This is a unique chance to work across both proven, revenue-generating products and greenfield initiatives that are reshaping the future of insurance. It's an ideal role for a driven Lead Engineer who thrives in ambitious environments and wants to make a tangible impact. As a Lead Backend Engineer, you'll take ownership of designing and scaling cloud-native backend systems. You'll work primarily with Python (FastAPI) and play a key role in shaping the architecture of microservices that support millions of users. Beyond hands-on development, you'll provide technical leadership, mentor team members, and influence strategic engineering decisions.
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Backend Engineer - Scale Systems with Real Impact ?? Tired of tinkering at the edges? Want to actually shape the backbone of a platform that's transforming how the world's biggest enterprises run their tech? This is one of those rare roles where you get in early, build the foundations, and watch your work scale across global businesses. We're working with a high-growth London startup on a mission to reinvent enterprise software. Their AI-driven platform is already saving household-name customers millions in IT costs, shaving months off ERP project timelines, and making sense of the mess that legacy systems leave behind. SAP is just the beginning - they're building a whole new category of Enterprise System Intelligence. The Role * Build core systems capable of handling tens of millions of lines of code and large-scale LLM workloads.
Backend Engineer - Scale Systems with Real Impact ?? Tired of tinkering at the edges? Want to actually shape the backbone of a platform that's transforming how the world's biggest enterprises run their tech? This is one of those rare roles where you get in early, build the foundations, and watch your work scale across global businesses. We're working with a high-growth London startup on a mission to reinvent enterprise software. Their AI-driven platform is already saving household-name customers millions in IT costs, shaving months off ERP project timelines, and making sense of the mess that legacy systems leave behind. SAP is just the beginning - they're building a whole new category of Enterprise System Intelligence. The Role * Build core systems capable of handling tens of millions of lines of code and large-scale LLM workloads.
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Join us at Entrust At Entrust, were shaping the future of identity centric security solutions. From our comprehensive portfolio of solutions to our flexible, global workplace, we empower careers, foster collaboration, and build solutions that help keep the world moving safely. Get to Know Us Headquartered in Minnesota, Entrust is an industry leader in identity-centric security solutions, serving over 150 countries with cutting-edge, scalable technologies. But our secret weapon? Our people. Its the curiosity, dedication, and innovation that drive our success and help us anticipate the future. As a Senior Full stack Engineer for the SDK team, you will join a talented and collaborative team dedicated to building resilient, scalable, and delightful systems and experiences for our customers.
Join us at Entrust At Entrust, were shaping the future of identity centric security solutions. From our comprehensive portfolio of solutions to our flexible, global workplace, we empower careers, foster collaboration, and build solutions that help keep the world moving safely. Get to Know Us Headquartered in Minnesota, Entrust is an industry leader in identity-centric security solutions, serving over 150 countries with cutting-edge, scalable technologies. But our secret weapon? Our people. Its the curiosity, dedication, and innovation that drive our success and help us anticipate the future. As a Senior Full stack Engineer for the SDK team, you will join a talented and collaborative team dedicated to building resilient, scalable, and delightful systems and experiences for our customers.
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Are you an enthusiastic, well-rounded, mid-to-lead Software Engineer, eager to grow the breadth and depth of your technical abilities, and enhance your responsibilities, working at the sharp end of missions in the NatSec domain? Are you happy to work "high-side", on-site 3-5 days/week? * Java * Kotlin * Python * Kubernetes * AWS * JavaScript * React * Node.js Nodding along so far? We should chat. Fortice work with 18 compass-point supplier, whether you want to sit in a prime seat, join a well-known SME or make a name for yourself at a start-up, we've got you covered! Salary:to £95,000 total comp package Start dates:December 2025 - February 2026 Please apply directly or message me to find out more.
Are you an enthusiastic, well-rounded, mid-to-lead Software Engineer, eager to grow the breadth and depth of your technical abilities, and enhance your responsibilities, working at the sharp end of missions in the NatSec domain? Are you happy to work "high-side", on-site 3-5 days/week? * Java * Kotlin * Python * Kubernetes * AWS * JavaScript * React * Node.js Nodding along so far? We should chat. Fortice work with 18 compass-point supplier, whether you want to sit in a prime seat, join a well-known SME or make a name for yourself at a start-up, we've got you covered! Salary:to £95,000 total comp package Start dates:December 2025 - February 2026 Please apply directly or message me to find out more.
Senior Software Engineer - eDV Cleared
Senior Software Engineer - eDV Cleared
NSD
London
£45000 - £100000 per annum + + Clearance Bonus + Company Bonus
* Permanent job opportunity for a Senior Software Engineer * Globally leading defence / cyber security company * Salary up to £100,000 plus clearance bonus * London based organisation in an easily accessible location * Permanent Software Engineer We are recruiting Senior and Lead Software Engineers to work with a multi-national, industry leading National Security client in central London. Due to the nature of the work you must hold enhanced DV Security Clearance. As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire software development life cycle from requirements capture to R&D, implementation to automation. * Current enhanced DV clearance
* Permanent job opportunity for a Senior Software Engineer * Globally leading defence / cyber security company * Salary up to £100,000 plus clearance bonus * London based organisation in an easily accessible location * Permanent Software Engineer We are recruiting Senior and Lead Software Engineers to work with a multi-national, industry leading National Security client in central London. Due to the nature of the work you must hold enhanced DV Security Clearance. As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire software development life cycle from requirements capture to R&D, implementation to automation. * Current enhanced DV clearance
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We’re working with a rapidly growing UK digital consultancy with a headcount of 500+ and offices across the UK. They combine technical excellence with a supportive culture that genuinely puts people first. This is an opportunity to join a cross-functional agile team delivering innovative solutions across industries such as finance, e-commerce, gaming, and more. You’ll be working alongside engineers, QA, product, and design to build robust systems that make a real impact. The Role • Work across multiple technologies, producing scalable, testable, and well-architected code. • Develop and maintain RESTful Java APIs and database integrations. • Troubleshoot and solve complex software issues, ensuring quality and performance. • Guide and mentor less experienced engineers through feedback, pair programming, and coaching. Tech Stack • Backend: Java, RESTful APIs
We’re working with a rapidly growing UK digital consultancy with a headcount of 500+ and offices across the UK. They combine technical excellence with a supportive culture that genuinely puts people first. This is an opportunity to join a cross-functional agile team delivering innovative solutions across industries such as finance, e-commerce, gaming, and more. You’ll be working alongside engineers, QA, product, and design to build robust systems that make a real impact. The Role • Work across multiple technologies, producing scalable, testable, and well-architected code. • Develop and maintain RESTful Java APIs and database integrations. • Troubleshoot and solve complex software issues, ensuring quality and performance. • Guide and mentor less experienced engineers through feedback, pair programming, and coaching. Tech Stack • Backend: Java, RESTful APIs
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Backend Polyglot Integration Developer – Modern PHP, APIs, Cloud Hybrid: Two days in our client's London office and three days working from home. On Monday morning, you might be refining an API connection between a collections database and a public-facing platform. By Wednesday, you could be writing code PHP 8.2 or Python 3.1x to automate image processing for a new exhibition launch. Friday afternoon? Testing out an AI tool to help curators search archive materials faster. That’s the reality of life as a Backend Polyglot Integration Developer here. No two weeks look the same. The mix of backend software development, systems integration, and cloud infrastructure work means you’ll constantly be learning, solving problems, and collaborating with colleagues from across the organisation.
Backend Polyglot Integration Developer – Modern PHP, APIs, Cloud Hybrid: Two days in our client's London office and three days working from home. On Monday morning, you might be refining an API connection between a collections database and a public-facing platform. By Wednesday, you could be writing code PHP 8.2 or Python 3.1x to automate image processing for a new exhibition launch. Friday afternoon? Testing out an AI tool to help curators search archive materials faster. That’s the reality of life as a Backend Polyglot Integration Developer here. No two weeks look the same. The mix of backend software development, systems integration, and cloud infrastructure work means you’ll constantly be learning, solving problems, and collaborating with colleagues from across the organisation.
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We're looking for a versatile Software Engineer to join a leading Bristol-based business, delivering high-quality solutions for clients across finance, e-commerce, and technology. This is a hands-on role where you'll work across the full stack. Back-end services in C#/.NET and Python, and dynamic front-end applications using JavaScript, React, Node.js, and TypeScript. Location: Bristol (On-site) Contract: 6 Months (OIR35) Rate: £350-450 p/day Start date: ASAP * Build and maintain software using C#/.NET, Python, JavaScript, React, Node.js, and TypeScript * Develop and optimise APIs, services, and integration layers. * Deliver end-to-end features across back-end, front-end, and cloud-hosted environments. * Write clean, efficient, and maintainable code following best practices. * Contribute to code reviews, testing, and Agile ceremonies.
We're looking for a versatile Software Engineer to join a leading Bristol-based business, delivering high-quality solutions for clients across finance, e-commerce, and technology. This is a hands-on role where you'll work across the full stack. Back-end services in C#/.NET and Python, and dynamic front-end applications using JavaScript, React, Node.js, and TypeScript. Location: Bristol (On-site) Contract: 6 Months (OIR35) Rate: £350-450 p/day Start date: ASAP * Build and maintain software using C#/.NET, Python, JavaScript, React, Node.js, and TypeScript * Develop and optimise APIs, services, and integration layers. * Deliver end-to-end features across back-end, front-end, and cloud-hosted environments. * Write clean, efficient, and maintainable code following best practices. * Contribute to code reviews, testing, and Agile ceremonies.
FEATURED
Full Stack Engineer
Full Stack Engineer
MATCHED GROUP LIMITED
City of London, London, EC4M 5SB
From £75,000 to £85,000 per annum
Tech: AWS, NodeJS, TypeScript, JavaScript, ReactJS Why?start-up financial services, revolutionising the industry Location: Hybrid - 1/2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings aimed at delivering fair, flexible, and user-friendly financial products to consumers. The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Full StackEngineer-Responsibilities * Design, develop, and maintain advanced applications. * Collaborate with cross-functional teams to define, design, and ship new features. * Optimize components for maximum performance across a vast array of web- capable devices and browsers.
Tech: AWS, NodeJS, TypeScript, JavaScript, ReactJS Why?start-up financial services, revolutionising the industry Location: Hybrid - 1/2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings aimed at delivering fair, flexible, and user-friendly financial products to consumers. The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Full StackEngineer-Responsibilities * Design, develop, and maintain advanced applications. * Collaborate with cross-functional teams to define, design, and ship new features. * Optimize components for maximum performance across a vast array of web- capable devices and browsers.
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Role: Golang Developer Salary: circa £50,000 to £85,000 per annum, depending on experience plus INCREDIBLE benefits Location: fully remote We're recruiting for a UK-based software company building scalable, high-performance platforms for modern infrastructure. The team is made up of experienced professionals from diverse industries, united by a passion for clean code, automation and innovation. They operate as a remote-first organisation with a strong culture of collaboration, transparency and continuous improvement. The competitive benefits package is tailored to support your wellbeing and career growth, including remote-first flexibility, 30 days annual leave plus bank holidays, a generous pension, healthcare, life assurance, personal development allowance and much more! This is a hands-on engineering role focused on writing clean, maintainable Go code.
Role: Golang Developer Salary: circa £50,000 to £85,000 per annum, depending on experience plus INCREDIBLE benefits Location: fully remote We're recruiting for a UK-based software company building scalable, high-performance platforms for modern infrastructure. The team is made up of experienced professionals from diverse industries, united by a passion for clean code, automation and innovation. They operate as a remote-first organisation with a strong culture of collaboration, transparency and continuous improvement. The competitive benefits package is tailored to support your wellbeing and career growth, including remote-first flexibility, 30 days annual leave plus bank holidays, a generous pension, healthcare, life assurance, personal development allowance and much more! This is a hands-on engineering role focused on writing clean, maintainable Go code.
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Salary up to £150k + Equity London or Fully Remote Can sponsor for UK based candidates Join an exciting Startup, who are on a mission to humanise technology by developing real-time, AI personas who feel as natural as interacting with a human. The vision is to build the next computer interface, one that mimics how we have communicated for millennia by developing AI personas who feel as natural as interacting with a human. The company is a few months away from announcing their Series A and is looking to expand the team to fit with current demand and growth. What will you do? You'll architect and build the systems that power our AI humans, working across the entire stack. This includes designing real-time communication systems, optimizing our AI pipeline, and ensuring our infrastructure can scale to millions of users.
Salary up to £150k + Equity London or Fully Remote Can sponsor for UK based candidates Join an exciting Startup, who are on a mission to humanise technology by developing real-time, AI personas who feel as natural as interacting with a human. The vision is to build the next computer interface, one that mimics how we have communicated for millennia by developing AI personas who feel as natural as interacting with a human. The company is a few months away from announcing their Series A and is looking to expand the team to fit with current demand and growth. What will you do? You'll architect and build the systems that power our AI humans, working across the entire stack. This includes designing real-time communication systems, optimizing our AI pipeline, and ensuring our infrastructure can scale to millions of users.
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Back End Developer - DV Cleared - Hybrid - Various Locations
Back End Developer - DV Cleared - Hybrid - Various Locations
Experis
London
£70000 - £120000 per annum + Excellent Benefits
Back End Developer - Must have an Active DV Clearance - Hybrid Location: Bristol, London, Manchester or Cambridge Salary: £70,000 - £120,000 (depending on experience) We are seeking a skilled and motivated Back End Developer to support the digital transformation of Defence services. If you're passionate about solving complex technical challenges and building scalable, secure platforms in mission-critical environments, this is an excellent opportunity to make a real impact. You'll work with cross-functional teams including front-end developers, UX specialists, architects and stakeholders, building the infrastructure and services behind modern, cloud-native applications. * Developing end-to-end features as part of an agile, collaborative team
Back End Developer - Must have an Active DV Clearance - Hybrid Location: Bristol, London, Manchester or Cambridge Salary: £70,000 - £120,000 (depending on experience) We are seeking a skilled and motivated Back End Developer to support the digital transformation of Defence services. If you're passionate about solving complex technical challenges and building scalable, secure platforms in mission-critical environments, this is an excellent opportunity to make a real impact. You'll work with cross-functional teams including front-end developers, UX specialists, architects and stakeholders, building the infrastructure and services behind modern, cloud-native applications. * Developing end-to-end features as part of an agile, collaborative team
PREMIUM
Outside IR35, Dev/Sec Ops Engineer, Azure, AWS, Technical Blueprint, Best practice, Regulatory Environment background, London + West Midlands. We are seeking a Senior Dev Sec Ops Consultant to lead governance, architecture guidance, and assurance for cloud and infrastructure security across Microsoft Azure, AWS, and key SaaS platforms. This role is pivotal in defining technical blueprints, setting security standards, and ensuring regulatory compliance with Cyber Essentials Plus, ISO 27001, and Zero Trust principles. You will work closely with IT and platform teams to embed best practices, validate implementations, and support audit readiness across IaaS, PaaS, and SaaS environments. Key Responsibilities * Own security architecture patterns and contribute to HLD/LLD, threat models, and risk assessments
Outside IR35, Dev/Sec Ops Engineer, Azure, AWS, Technical Blueprint, Best practice, Regulatory Environment background, London + West Midlands. We are seeking a Senior Dev Sec Ops Consultant to lead governance, architecture guidance, and assurance for cloud and infrastructure security across Microsoft Azure, AWS, and key SaaS platforms. This role is pivotal in defining technical blueprints, setting security standards, and ensuring regulatory compliance with Cyber Essentials Plus, ISO 27001, and Zero Trust principles. You will work closely with IT and platform teams to embed best practices, validate implementations, and support audit readiness across IaaS, PaaS, and SaaS environments. Key Responsibilities * Own security architecture patterns and contribute to HLD/LLD, threat models, and risk assessments
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