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87 application engineer jobs found in London

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London United Kingdom application engineer
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Contract Spy
Apr 27, 2026
Duration not stated
Senior Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
  Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from 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 Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...
Contract Spy
Apr 27, 2026
Duration not stated
Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
  Job Title: Full Stack Developer (contract) Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from 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 an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...
Contract Spy
Apr 20, 2026
Duration not stated
Senior Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from 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 Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of...
Contract Spy
Apr 13, 2026
Duration not stated
Senior Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
  Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from 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 Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...
Contract Spy
Apr 13, 2026
Duration not stated
Full Stack Developer at Deloitte, London, £Competitive Day Rate
Contract Spy London, UK
  Job Title: Full Stack Developer (contract) Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from 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 an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...
Contract Spy
Apr 09, 2026
Duration not stated
AWS DevOps Engineer at G-Research, London, £Contract Rate
Contract Spy London, UK
AWS DevOps Engineer (Contract) We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity. From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution — because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas. As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research – designing systems that scale, accelerate discovery and support innovation across the firm. Take the next step in your career.   The role   In this role, you’ll take ownership of our AWS landing zones and shared platform services, designing secure, scalable, multi-account environments that balance autonomy for engineering teams with strong governance and compliance. You’ll deliver robust,...
Contract Spy
Apr 29, 2026
up to 6 Months
Senior Software Engineer, Native Applications and Networking at Secure Code Warrior, London, 3 Months, £Contract Rate
Contract Spy London, UK
Full job description Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract...
Contract Spy
Apr 22, 2026
up to 6 Months
Senior Software Engineer, Native Applications and Networking at Secure Code Warrior, London, 3 Months, £Contract Rate
Contract Spy London, UK
Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract role, you will be the architectural...
Contract Spy
Apr 09, 2026
Duration not stated
AWS Cloud Engineer at G-Research, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution — because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas.   As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research – designing systems that scale, accelerate discovery and support innovation across the firm.   Take the next step in your career.   The role   In this role, you’ll take ownership of our AWS landing zones and shared platform services, designing secure, scalable, multi-account environments that balance autonomy for engineering teams with strong governance and compliance. You’ll deliver robust,...
Contract Spy
Apr 29, 2026
up to 6 Months
Full Stack Software Engineer at Paloma Health, Remote/London, 3-5 Months, £Freelance Rate
Contract Spy London Area, United Kingdom
Time commitment: Freelance project lasting around 3 to 5 months Location: Hybrid or Remote Reporting to: VP of Technology, Avishai Gurt   About Paloma   Paloma’s mission is to make children’s autism and ADHD assessments and care available on the NHS within 4 weeks of GP referral. We are making this possible by setting a new standard for high-quality autism and ADHD care, building great software & AI tools, and investing in clinicians' learning & development.   Mark and Darshak founded Paloma due to their frustration that families are waiting 4-10 years for NHS children’s autism and ADHD assessments. This crisis in NHS children’s neurodevelopmental services has been highlighted by the Children’s Commissioner for England here:...
Contract Spy
Apr 29, 2026
6 Months or more
IT Infrastructure Engineer (Security) at Xoriant, London Canary Wharf, 6 Months+, £Contract Rate
Contract Spy Canary Wharf, London, UK
IT Infrastructure Engineer(Security) Canary Wharf, UK Hybrid (2 days week) Inside IR35 Contract (6+ Months)   Key Skills • Creation of technical governance documentation, such as Low Level Designs and • Creation of security focused technical specifications for Windows environments • Secure Configuration Baseline creation • Knowledge of Active Directory Certificate Services • Knowledge of IIS • Knowledge of Active Directory Domain Services • Knowledge of Cryptography • Windows Server 2019 / 2022 / 2025 • Windows 11 • PowerShell • VMware including ESXi / vCentre • Strong understanding of designing to meet security principles and compliance • Application Infrastructure migration skills   Desirable Skills • Desirable: good knowledge MS SQL • Desirable: experience using M365 Security Controls • Ensure our internal...
Contract Spy
Apr 29, 2026
6 Months or more
Cloud Engineer - Azure at Thebes IT Solutions Ltd, London, 6 Months, £Contract Rate
Contract Spy London, UK
Key Essential Skills: Proven Azure engineering capability, including Infrastructure as Code using Bicep and/or ARM templates. Preferred: Microsoft Azure certification (AZ-104 or above). Degree-level education, or equivalent professional experience Strong Scripting skills (PowerShell essential; Python exposure beneficial). Hands-on experience with Oracle Cloud services. Comfortable working with Git-based version control and standard branching practices. Practical experience deploying and supporting public-cloud IaaS/PaaS services in production. Able to translate requirements into resilient, scalable and cost-aware cloud designs. Good working knowledge of identity, access control and cloud security good practice. Desirable Skills: AWS experience, including infrastructure provisioning using CloudFormation and/or Terraform. (EC2, S3, Lambda, VPC, IAM, CloudFormation), DNS/networking fundamentals, and CI/CD or automation tooling.) Strong automation...
Contract Spy
Apr 29, 2026
Duration not stated
Cloud Engineer - AI Engineer at Thebes IT Solutions Ltd, London, £Contract Rate
Contract Spy London, UK
Overview: This hands-on engineering role combines cloud platform delivery with software development to enable AI workloads at scale. You will design, build and support cloud and AI-ready patterns across Azure (primary) and Oracle Cloud, with AWS introduced as the platform footprint expands. The role requires strong engineering discipline, comfort working independently through ambiguity, and close collaboration with application and infrastructure teams to deliver secure, compliant and repeatable solutions. Key Essential Skills: Strong Azure engineering background, including Infrastructure as Code (Bicep/ARM and ideally Terraform) and cloud platform operations. High proficiency in Python and PowerShell to build automation, integrations and AI-related workflows. Experience delivering and supporting enterprise cloud and identity capabilities across Azure and Oracle Cloud (including Entra ID). Hands-on REST API development and integration, including secure...
Contract Spy
Apr 27, 2026
Duration not stated
Python - Senior Developers - AI Training at Prolific, UK, £Contract Rate
Contract Spy London, England, United Kingdom
About Prolific Prolific is not just another player in the AI space – we are building the biggest pool of quality human data in the world. Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from paid study participants with a wide variety of experiences, knowledge, and skills. The role We're looking for Senior Python Developers to join our Expert Network to help train and evaluate cutting-edge AI models. If you have a background in Software Engineering, we'll send you a quick 10- to 15-minute test to assess your skills. If successful, you'll be invited to join Prolific as a participant, where you'll get paid to help AI understand and summarize complex scientific data. Researchers looking for your skills tend to pay up to $50/hr, depending on skills and experience level . You must be prepared to complete paid tasks that require one hour of uninterrupted work , though many are shorter. What you'll bring Educational...
Contract Spy
Apr 24, 2026
6 Months or more
IT Infrastructure Engineer (Security) at Xoriant, London Canary Wharf, 6 Months+, £Contract Rate
Contract Spy Canary Wharf, London, UK
IT Infrastructure Engineer(Security) Canary Wharf, UK Hybrid (2 days week) Inside IR35 Contract (6+ Months)   Key Skills • Creation of technical governance documentation, such as Low Level Designs and • Creation of security focused technical specifications for Windows environments • Secure Configuration Baseline creation • Knowledge of Active Directory Certificate Services • Knowledge of IIS • Knowledge of Active Directory Domain Services • Knowledge of Cryptography • Windows Server 2019 / 2022 / 2025 • Windows 11 • PowerShell • VMware including ESXi / vCentre • Strong understanding of designing to meet security principles and compliance • Application Infrastructure migration skills   Desirable Skills • Desirable: good knowledge MS SQL • Desirable: experience using M365 Security Controls • Ensure our internal...
Contract Spy
Apr 24, 2026
Duration not stated
Software Engineer (Java, Python, Golang) at Test Yantra, London, £350-£370 per day
£350 - £370 per day
Contract Spy London, UK
We are urgently looking for experienced candidates with strong hands-on Java development skills and design experience. While an architect title is not mandatory, we are particularly interested in profiles of senior developers with solid technical expertise. Required Core Skills: - Java - Python - GoLang -Design, develop, and maintain high-quality Java applications. -Write clean, efficient, and well-documented code. -Perform code reviews and optimize existing codebases. -Ensure application performance and reliability. -Develop and maintain automated tests to ensure code quality. -Work with CI/CD pipelines to streamline the development and deployment process. Job Types: Full-time, Freelance Pay: £350.00-£370.00 per day Schedule: Monday to Friday Experience: Java: 7 years (required) Python: 3 years (required) Go: 2 years (required)
Contract Spy
Apr 23, 2026
Duration not stated
Full Stack Developer (React, Java, Spring) at Deloitte, London, £Contract Rate
Contract Spy London, UK
Job Title: Full Stack Developer (Java, Spring, React) - contract Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from 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 an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires an...
Contract Spy
Apr 22, 2026
Duration not stated
SQL Server Database Engineer at Synechron, London, £Contract Rate
Contract Spy London, UK
Job Location: London (Hybrid - 3 days in the office) About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. We are seeking an experienced SQL Server Database Engineer with strong expertise in Microsoft SQL Server, Axway integration platforms, and UNIX environments . The candidate will be responsible for the design, administration, performance tuning, and support of SQL Server databases that integrate with Axway-based Middleware and operate within UNIX ecosystems. The role requires close collaboration with application, infrastructure, and integration teams to ensure high availability, security, and optimal performance of database systems.. Database Administration & Engineering Design, install, configure, and manage Microsoft SQL...
Contract Spy
Apr 21, 2026
Duration not stated
Data Engineer (SC Cleared) at Scrumconnect, London, £350-£400 per day
£350 - £400 per day
Contract Spy London, UK
Date Opened 21/04/2026 Job Type Contract About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of more than  40 million UK citizens . We are committed to  user-centred design ,  agile delivery , and driving innovation in digital services that truly matter. Role Overview We are seeking an experienced  Data Engineer  to design, build, and maintain data products and a modern  Strategic Data Platform . You will work within multi-functional  Agile delivery teams , ensuring operational stability, ongoing support, and continuous enhancement of data solutions. This role is ideal for someone with strong  Azure data engineering experience , excellent  SQL and Python  capability, and a passion for building  scalable, reliable...
Contract Spy
Apr 20, 2026
6 Months or more
IT Infrastructure Engineer (Security) at Xoriant, London Canary Wharf, 6 Months+, £Contract Rate
Contract Spy Canary Wharf, London, UK
IT Infrastructure Engineer(Security) Canary Wharf, UK Hybrid (2 days week) Inside IR35 Contract (6+ Months)   Key Skills • Creation of technical governance documentation, such as Low Level Designs and • Creation of security focused technical specifications for Windows environments • Secure Configuration Baseline creation • Knowledge of Active Directory Certificate Services • Knowledge of IIS • Knowledge of Active Directory Domain Services • Knowledge of Cryptography • Windows Server 2019 / 2022 / 2025 • Windows 11 • PowerShell • VMware including ESXi / vCentre • Strong understanding of designing to meet security principles and compliance • Application Infrastructure migration skills   Desirable Skills • Desirable: good knowledge MS SQL • Desirable: experience using M365 Security Controls • Ensure our internal...
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