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113 application engineer jobs found

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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 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 24, 2026
Duration not stated
Senior Full Stack Engineer at OnBuy, Remote, 4 Months, £550-£650 per day (Outside IR35)
Contract Spy United Kingdom
Who are OnBuy? OnBuy are an online marketplace who are on a mission of being the best choice for every customer, everywhere. We have recently been named one of the UK 's fastest-growing tech companies in the Sunday Times 100 Tech list. All achievements we are very proud of, but we don 't let that go to our head. We are all laser focused on our mission and understand the huge joint effort ahead of us needed to succeed. Working at OnBuy: . This is a critical role responsible for building, scaling, and evolving OnBuy's core commerce platform across both front-end and back-end systems. As a Senior Full Stack Engineer, you will own engineering delivery end-to-end; from customer-facing experiences to underlying services and data systems. You will operate within a cross-functional team and be accountable for shipping high-quality, scalable solutions that directly impact GMV, seller performance, and customer experience. This role moves beyond "front-end vs back-end " you are...
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
Infrastructure Engineer at SiXworks, Farnborough/Remote, £Contractor Rate
Contract Spy Hybrid (Farnborough, UK)
Location Farnborough (Hybrid) Employment Type Contractor About the job  We currently have an exciting opportunity for an Infrastructure Engineer to join our existing experienced team.     Our organisation specialises in pioneering solutions within National Security & Defense, emphasising Secure by Design methodologies. As a valued member of our team, you'll contribute to cutting-edge projects, creating highly secure and high-performance software systems. This role requires the highest level of UK security clearance.   Responsibilities are likely to include:  Maintain, improve, and secure SiXworks’ multi-classification, virtualised, collaboration and development environments.  Work with IT infrastructure colleagues to improve SiXworks’ ‘Secure by Design’ capabilities, internally and across its projects.  Provide Infrastructure support...
Contract Spy
Apr 23, 2026
Duration not stated
ML Ops Engineer at CreateFuture, United Kingdom, £Contract Rate
Contract Spy United Kingdom
Who We Are CreateFuture is fast becoming the UK’s most recognisable digital consultancy, with years of experience building digital products and services for major organisations whilst putting our people first. We have offices in the centre of Edinburgh, Leeds, Manchester, and London as well as remote employees located throughout the country. We are a team of creators - whether that’s code, project plans, go to market strategies, culture initiatives, marketing campaigns, large language models or people policies. And together, with our clients, we create the future. This has seen us collaborate and partner across a multitude of industries and sectors, with the likes of PayPal, adidas, Natwest, FanDuel and Money Saving Expert, to name just a few. Our reputation as a partner determined to deliver high-quality, robust and thoughtful products has enabled us to scale to over 500 people in the last couple of years, and it is our amazing people - along with the safe,...
Contract Spy
Apr 23, 2026
Duration not stated
Senior Front End Developer at Bridebook, Remote, £Competitive Day Rate
Contract Spy Remote
Senior Front-End React Developer At Bridebook, we're digitising the wedding industry! Join us in transforming the wedding planning experience for engaged couples around the world. Full-time Contractor · Remote · Competitive Day Rate Who is Bridebook anyway? Bridebook is a revolutionary wedding planning platform that seeks to make wedding planning an enjoyable, intuitive, and rewarding experience for couples, guests, and industry partners. Launched in the UK, Bridebook has over 1,000,000 planning couples and has been featured in major outlets such as the New York Times, the BBC, and the App Store. After seven years and many iterations later, we have 2 in 3 engaged UK couples and 1 in 3 engaged German couples using Bridebook, and have recently expanded into the French and Irish markets. While we serve a very emotional and creative industry, we are disrupting the wedding industry by leveraging cutting-edge technology to provide seamless and...
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 22, 2026
Duration not stated
F5 Consultant at C-Serv Commercial Services, Edinburgh, £Contract Rate (Outside IR35)
Contract Spy Edinburgh, UK
C-Serv is a leading provider of IT solutions, specializing in delivering innovative and secure technology environments for a diverse range of clients. The Opportunity: We are looking for a skilled F5 Engineer to join our team on a contractor basis. The ideal candidate will bring strong hands-on experience with F5 technologies and take ownership of deploying, configuring, and managing F5 services. This role calls for a proactive problem-solver who thrives in a fast-paced environment. You'll work closely with cross-functional teams to ensure the seamless performance of network services and applications. This position is outside IR35. Requirements Key Responsibilities: Deploy and configure F5 infrastructure, including BIG-IP LTM, GTM, and other F5 modules. Monitor and maintain the performance of F5 services and application delivery solutions. Provide technical support and troubleshooting for F5-related issues. Implement security policies and...
Contract Spy
Apr 21, 2026
Duration not stated
Senior Full-Stack Engineer at RC Fornax, Greater Bristol, £350–£500 per day
£350 - £500 per day
Contract Spy Greater Bristol Area, United Kingdom
Senior Full-Stack Engineer Location: Bristol Engagement Type: Permanent or Contract Day Rate / Salary: £350–£500 per day (contract) or permanent package by discussion Work Model: Hybrid - Bristol office, flexible by agreement   **Please do not apply if you require sponsorship**   About the Role We’re looking for a Senior Full-Stack Engineer to join the product engineering team at RC Fornax.   This role will initially focus on building a new AI-enabled product, a structured document generation and workflow tool that transforms unstructured inputs into high-quality, structured outputs through analysis, drafting, review, and publishing workflows.   The product sits within a broader defence and procurement platform, where outputs directly support real-world engineering, delivery, and supplier decisions.   The early emphasis is on getting this product built quickly and...
Contract Spy
Apr 21, 2026
Duration not stated
DevOps Engineer at Quantico Solutions, Remote, £400-£580 per day
£400 - £580 per day
Contract Spy Remote
A Skilled DevOps Engineer with strong hands‑on experience across AWS , Java , React , Postgres, Node and modern open‑source tooling. A proven track record building and operating secure, automated, cloud‑native platforms , ideally within public‑sector, policing, justice, or other security‑sensitive environments would be beneficial.T hey must be comfortable working with LLM‑assisted engineering , Claude is a strong bonus. In addition to technical depth, we need someone with excellent people skills — someone who collaborates well, communicates clearly, and contributes positively to a distributed engineering team. Candidates must be UK‑based with active SC clearance and NPPV3 , or be very close to accreditation. This project is currently in delivery, and we are looking for a 12‑month contract. This role is inside IR35, fully remote with no travel. IT equipment is provided for exclusive use on this programme. We need individuals...
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 21, 2026
Duration not stated
SAP Security and Implementation Engineer at Surrey Satellite Technology, Guildford, £Contractor Rate
Contract Spy Guildford, UK
  This role sits inside IR35 This role is an exciting opportunity for a professional to develop and deliver SAP Identity Management solutions within SAP S/4 HANA Public Cloud to develop and deliver solutions that protect SAP systems and data by establishing policies, practices, and tools that prevent unauthorized access, use, disclosure, modification, or disruption.   This role will This role will be responsible for design and implementation of SAP Security Roles, Segregation of Duties Analysis Rules, Security Role Provisioning solutions, Security Workflow, Business Process Controls. Key Tasks Working Approach: The ability to adapt existing methods and procedures to create possible alternative solutions to moderately complex problems. Understands the strategic direction set by senior management as it relates to IT and SAP Identity Management goals. Uses considerable judgment to determine solutions and seeks peer and manager...
Contract Spy
Apr 21, 2026
Duration not stated
Senior Software Deployment Engineer at Mindera, Bracknell, £Competitive Day Rate (Outside IR35)
Contract Spy Bracknell, UK
Mindera are currently looking for a Senior Software Deployment Engineer who can lead the delivery, configuration, testing, and rollout of applications and retail device solutions across complex, large-scale environments. In this role you will help shape deployment strategy, drive automation, improve reliability, mentor engineers, and work closely with product, platform, and engineering teams to ensure smooth, secure, and high-quality releases that reaches thousands of customers. This is a hybrid role and you will be expected to be on site in Bracknell 3 days per week. Requirements Deployment & Configuration Leadership Lead end-to-end deployment processes across Dev, Test, UAT, Pre-Prod, and Production. Design scalable, repeatable deployment workflows and environment strategies. Drive automation across CI/CD pipelines using scripting, IaC, and tooling improvements. Ensure environment readiness, configuration integrity, and release...
Contract Spy
Apr 17, 2026
Duration not stated
Senior Ruby on Rails Developer at Teach Your Monster, Remote, Part-Time, £Contractor Rate
Contract Spy Remote
Senior Ruby on Rails Developer (Part-Time Contractor) Teach Your Monster Teach Your Monster builds educational games used by millions of children worldwide. Our flagship literacy game Teach Your Monster to Read has reached over 30 million players and is widely used in homes and classrooms. We’re looking for a senior Ruby on Rails developer to help maintain and evolve the platform that powers our games, user accounts and APIs. This is a contractor role (3-4 days per week) with an initial commitment of 6-12 months, working alongside our product, design and game development teams. The Role You’ll work across our Rails platform that supports our games and web services. Typical work includes: Maintaining and improving our Ruby on Rails application Designing and maintaining APIs used by our games Supporting authentication, login and SSO systems Improving test coverage, CI/CD and deployment processes Refactoring legacy...
Contract Spy
Apr 17, 2026
Duration not stated
Operational Technology (OT) Cyber Security Systems Engineer at Bilfinger UK, Chesterfield, £Contract Rate
Contract Spy Chesterfield, England, United Kingdom
Bilfinger UK is a leading engineering and maintenance provider, supporting customers across the chemical & petrochemical, nuclear, oil & gas, pharmaceuticals & biopharma, power & energy, utilities, renewables and food & beverage markets. We enhance the efficiency of assets, ensuring a high level of availability and reducing maintenance costs. We have extensive experience in offshore and onshore facilities; specialising in asset management services throughout all life cycle phases from consulting, engineering, manufacturing, assembly, operations, maintenance, and decommissioning. This commitment is delivered by an experienced and highly competent workforce of over 4,500 employees operating from 14 offices in strategic industrial hubs, upholding the highest standards of safety, compliance and quality. Role: We are seeking an experienced, committed and enthusiastic Operational Technology (OT) Cyber Security Systems Engineer to join our Automation team for a...
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