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63 web application engineer jobs found

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United Kingdom web application engineer Greater London
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Contract Spy
Oct 16, 2026
up to 6 Months
IAM Engineer at Deloitte, London/Remote, 4 Months, £Competitive Day Rate
Contract Spy London, UK
Job Title: IAM Engineer (contract) Location: London Hybrid 2-3 days a week in the London office Duration: 4 months Contract Start Date: ASAP *please note that onboarding will take 4-6 weeks from the offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for a Cloud IAM Engineer to design and deliver secure identity and access management (IAM) solutions across AWS and GCP environments. Working with security, infrastructure, service engineering and business...
Contract Spy
Oct 12, 2026
Duration not stated
IAM Engineer at Deloitte, London, 4 Months, £Contract Rate
Contract Spy London Area, United Kingdom
Job Title: IAM Engineer (contract) Location: London Hybrid 2-3 days a week in the London office Duration: 4 months Contract Start Date: ASAP *please note that onboarding will take 4-6 weeks from the offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for a Cloud IAM Engineer to design and deliver secure identity and access management (IAM) solutions across AWS and GCP environments. Working with security, infrastructure, service engineering and business application teams, you will...
Contract Spy
Oct 09, 2026
up to 6 Months
IAM Engineer at Deloitte, London/Remote, 4 Months, £Competitive Day Rate
Contract Spy Hybrid (London, UK)
Job description Job Title: IAM Engineer (contract) Location: London Hybrid 2-3 days a week in the London office Duration: 4 months Contract Start Date: ASAP *please note that onboarding will take 4-6 weeks from the offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for a Cloud IAM Engineer to design and deliver secure identity and access management (IAM) solutions across AWS and GCP environments. Working with security, infrastructure, service...
Contract Spy
Oct 23, 2026
Duration not stated
Principal Engineer – SC Eligible at ByDesign Secure, London/Remote, £850 per day (Outside IR35)
£850 per day
Contract Spy Hybrid (London, UK)
Principal Engineer – SC Eligible – Government Projects This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission We are a fast‑growing startup building scalable, high‑quality digital products at pace. Our success depends on strong engineering foundations, pragmatic architecture, and ways of working that enable teams to deliver value continuously. We are looking for a Principal Engineer to play a critical leadership role across our engineering and architecture community. This is an opportunity to shape how we build, not just what we build—embedding effective engineering processes, modern delivery practices, and a culture of continuous improvement as the company scales. This role suits a senior technologist who thrives in ambiguity, enjoys influencing without authority, and wants to leave a lasting imprint on how engineering operates within a growing...
Contract Spy
Oct 23, 2026
Duration not stated
Platform Engineer at YLD, Remote, £B2B Contract Rate
Contract Spy Remote (London, England, United Kingdom)
Location: UK Remote (GMT timezone) Department: Engineering Employment Type: Contract (B2B)   About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done.   About the role As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and enthusiastic. You should be skilled in...
Contract Spy
Oct 23, 2026
Duration not stated
Network Implementation Engineer at WWT EMEA UK LIMITED, London/Remote, £Contract Rate
Contract Spy Hybrid (London, UK)
World Wide Technology (WWT), a 36-year-old global technology integrator and IT solutions provider. Through our culture of innovation, we inspire, build, and deliver business results from idea to outcome. World Wide Technology (WWT) has an opportunity for Senior Network Engineers to execute a legacy-to-ACI migration across two data centres supporting a major financial services client. This is hands-on, Implementation, Migration & deployment-focused work engineers will implement against Low-Level Designs already produced by the design team, not design the solution themselves. Candidates must be able to demonstrate solid routing, switching, and BGP fundamentals, as technical depth in these areas is a key screening criterion for this role. This is a contract Role & Inside IR35 Senior Network Engineer Contract Duration: To be confirmed Location: London (Hybrid – 2 days a week) Key Responsibilities Physically rack, cable, and configure...
Contract Spy
Oct 23, 2026
Duration not stated
Solutions Architect at 4C Strategies Ltd, London, 6 Months initial, to £650 a day
£550 - £650 per day
Contract Spy London, UK
We are seeking an experienced Solutions Architect for an initial 6-month contract to provide hands-on architectural and technical leadership across a complex technology and business systems environment. This is a broad, operationally focused role requiring someone who can balance day-to-day technical management with hands-on solution design and delivery. You will work across business-critical applications providing practical architectural guidance and resolving technical challenges as they arise. You will take ownership of the day-to-day architecture function, ensuring existing services remain robust and fit for purpose while supporting projects, system changes and ongoing improvement initiatives. The role will also provide day-to-day leadership and management for a team of four technical specialists, ensuring priorities are managed effectively and the team has the technical direction required to deliver. Key Responsibilities Take day-to-day ownership of the Solutions...
Contract Spy
Oct 23, 2026
Duration not stated
Senior Solidity Engineer at Test Yantra, London/Remote, £400 per day
£400 per day
Contract Spy Hybrid (London, UK)
Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...
Contract Spy
Oct 22, 2026
Duration not stated
QAT Analyst (SC Cleared) at Scrumconnect, London, £275-£325 per day (Outside Ir35
£275 - £325 per day
Contract Spy London, UK
About Scrumconnect Consulting Scrumconnect Consulting is a UK-based, award-winning digital consultancy delivering high-quality digital products and services for major public sector clients, including DWP, MoJ, NHS and HMRC. With a team of over 300 consultants, we specialise in building secure, user-centred and scalable digital solutions that serve millions of citizens. We foster a collaborative engineering culture, encourage continuous learning and prioritise inclusivity. As a Disability Confident Level 1 employer, we are committed to making our recruitment processes and working environments accessible and supportive for everyone. Role Overview We are looking for a highly skilled QA Automation Tester with extensive experience in designing, developing and executing automation frameworks across UI, API and microservices-based applications. In this role, you will play a key part in ensuring the quality, reliability and performance of government digital...
Contract Spy
Oct 21, 2026
6 Months or more
AI Engineer at Handelsbanken Plc, London, 12 Months, £Day Rate
Contract Spy London, UK
Posted 1 hour ago  Contract  Competitive     AI Engineer - 12 Month Day Rate Contract Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to take ownership, make informed decisions, and deliver sustainable, high-quality solutions. We value engineering excellence, pragmatic problem-solving, and strong collaboration across technology, business, and...
Contract Spy
Oct 21, 2026
Duration not stated
kdb+ Contractor at Data Intellect, London/Remote, £Contractor Rate
Contract Spy Hybrid (London, UK)
Join the world’s largest kdb+ Consultancy where every query matters, every millisecond counts and every system you build shapes the future of data-driven finance. At Data Intellect , we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers and collaborators who believe in pushing boundaries, not egos. If you're a proficient kdb+ developer ready to lead, innovate and make an impact, we want to hear from you. Job Description As a Senior kdb+ Engineer at [DI] you’ll be at the forefront of delivering high-performance, scalable solutions for some of the world’s most data-intensive financial institutions. You’ll: Lead technical delivery on client projects, setting the standard for quality and performance. Design and implement robust kdb+ architectures that handle billions of rows of time-series data. Collaborate with quants, traders, and analysts to translate...
Contract Spy
Oct 21, 2026
Duration not stated
Senior AWS Application & Platform Engineer at UST, London, £Contract Rate
Contract Spy London, UK
Location: London (Hybrid – 3 days onsite, mandatory) Employment Type : Permanent | Fixed-Term Contract | Contract (Inside IR35) Start Date : Immediate/ Short Notice period About the Role We are seeking a Senior AWS Application & Platform Engineer to help design and build cloud-native applications, developer platforms and AI-enabled engineering capabilities from the ground up.   This is a highly hands-on engineering role combining AWS application development, serverless and event-driven architecture, Python, Generative AI, developer tooling and automation.   You will build APIs, reusable application patterns, developer accelerators and AI-enabled services that help engineering teams deliver software more efficiently, securely and consistently.   Key Responsibilities Design and build cloud-native applications, APIs and platform services on AWS. Develop serverless and event-driven solutions using AWS Lambda, API...
Contract Spy
Oct 21, 2026
Duration not stated
Senior Data Analytics Engineer (SC Cleared/SC Eligible) at Scrumconnect, London, £350-£400 per day (Outside IR35)
£350 - £400 per day
Contract Spy London, UK
Salary 350-400 Outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting Scrumconnect Consulting is a digital and data consultancy delivering high-quality technology, analytics and transformation services to public and private sector clients. We work closely with government departments and complex organisations to design and deliver scalable, ethical and impactful data solutions. The Role As a Senior Data Analytics Engineer, you will play a critical role in designing, building and maintaining high-quality data models that enable analytics, reporting and data-driven decision-making. You will work with stakeholders across complex domains, including GDS-aligned programmes, to understand data relationships and business processes, and turn them into robust analytical data assets. This role is hands-on technical delivery with strong stakeholder...
Contract Spy
Oct 20, 2026
Duration not stated
Principal Information Security Consultant at Handelsbanken, London, £Day Rate
Contract Spy London, UK
Principal Information Security Consultant (Day rate Contract) Contract Type Day Rate Contractor Closing Date 18 November, 2026 Job Category Tech, Data and Digital Business Unit Information Security & Privacy (UKTI) Location London, United Kingdom Posted on 19 October, 2026 Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank's decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to...
Contract Spy
Oct 20, 2026
Duration not stated
Platform Engineer at OpticoreIT, London, £Contract Rate
Contract Spy London, England, United Kingdom
Opticore IT is a specialist Network Engineer and Project Management consultancy offering a wide variety of opportunities to work within fast-paced, challenging environments across our client base spanning multiple sectors, including Finance, Broadcast Media, Telecommunications and more. Opticore IT are currently searching for Platform Engineers with strong AWS, CloudFormation and PowerShell experience. You'll join our excellent team, based in the London area, with 2 days a week on-site. This is a 6-month contract, inside IR35, with scope to extend. This is an 18 - 24 month project. A bit about the opportunity: Evolve and operate the Enterprise Platform product set across AWS, Azure, GCP and on-premise workloads, driving automation-first engineering to keep corporate application hosting efficient, stable and secure while continuously reducing manual toil. What you'll be doing: Provision, scale and optimise infrastructure across AWS, Azure and GCP, spanning IaaS,...
Contract Spy
Oct 20, 2026
up to 6 Months
Java Developer at Deloitte, London, 4 Months, £Competitive Day Rate
Contract Spy London Area, United Kingdom
Job Title: Java Developer (contract) Location: London Hybrid 2-3 days a week in the London office Duration: 4 months Contract Start Date: ASAP *please note that onboarding will take 4-6 weeks from the offer Day Rate: Competitive (Inside IR35)   Deloitte   Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role   We are looking for a Java Integration Engineer to analyse, enhance and integrate complex enterprise applications within a global financial services environment. The role will use Java, Oracle and the Spring Framework to support...
Contract Spy
Oct 20, 2026
6 Months or more
Network Security Consultant at OpticoreIT, London, 6 Months initial, £Contract Rate
Contract Spy London, England, United Kingdom
Opticore IT is a specialist Network Engineer and Project Management consultancy offering a wide variety of opportunities to work within fast-paced, challenging environments across our client base spanning multiple sectors including Finance, Broadcast Media, Telecommunications and more. Opticore IT are currently searching for a Network Security Engineer who is confident working with Fortigate to join the team for an initial 6 month contract inside IR35 with scope to extend. This opportunity will require 2 days per week in Central London. Lead the design, business agreement and hands on delivery of a new firewall governance framework for the bank, acting as design authority while reviewing and remediating a Cisco FTD and FortiGate estate of around 4,000 rules so that every rule has a clear owner, purpose and review date, and laying the foundation for Firewall Policy as Code. What you'll be doing: Review the bank's current firewall policies, AlgoSec reports, Ivanti...
Contract Spy
Oct 20, 2026
Duration not stated
WiFi Architect at WWT, London/Remote, 6 Months initial, to £665 per day (Outside IR35)
£550 - £665 per day
Contract Spy Hybrid (City of London, London, UK)
World Wide Technology (WWT)  is a global technology integrator and supply chain solutions provider.  Through our culture of innovation, we inspire, build, and deliver business results from idea to outcome. World Wide Technology (WWT) is looking for an experienced WiFi Architect who must have sufficient expertise to review, challenge and push back on Cisco where necessary. The Architect will own the interpretation of RF survey outputs, advise the client on remediation and deviation decisions, and lead a small team of supporting WiFi and network engineers. The ideal candidate will have strong hands-on experience and is expected to get involved in configuration and engineering work. This is a contract Role & Outside IR35 WiFi...
Contract Spy
Oct 20, 2026
up to 6 Months
DDI Engineer at World Wide Technology, Remote/London, 6 Months, £Contract Rate
Contract Spy Remote (London, UK)
World Wide Technology (WWT) is a global technology solutions provider, founded in 1990, that helps organisations turn strategy into results. In the UK, we bring that global scale and our Advanced Technology Center expertise to clients across the public and private sectors. We design, build and prove solutions in infrastructure, security, cloud and digital, before they go live. Our people are our biggest asset, and we invest in them. Make a new world happen with us. Join a team that designs, builds and runs the core network services every application depends on. You will engineer and integrate DDI platforms, then automate them so they scale cleanly across a large enterprise estate. What you'll do Engineer, build and integrate enterprise DDI platforms (DNS, DHCP and IPAM), from design through to live service. Integrate DDI with the wider estate: cloud and virtualisation platforms, network and security tooling, CMDBs, ITSM, and identity and directory services such as...
Contract Spy
Oct 20, 2026
6 Months or more
Senior Mobile QA Engineer at Waracle, London/Remote, 6 Months initial, £Contract Rate
Contract Spy Hybrid (London, UK)
Waracle are looking for a Senior QA for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.   This is a Hybrid role working from our London office 2 days a week and is available on a Contract (Inside IR35) basis, initially for 6 months. Are you a technical quality specialist who thrives on collaboration, engineering rigor, and robust automation? We are looking for a Senior Quality Engineer who combines strong software engineering discipline with deep test automation expertise to deliver...
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