14 web application engineer jobs found

iOS Engineer - Contract (Outside of IR35) As an iOS Developer, you will have the opportunity to build and lead solutions that engage millions of sports fans worldwide. Working with a wide range of data sources and native technologies, building bespoke UI experiences for sports fans. At Pulselive, we pride ourselves in providing a collaborative environment that ensures we produce leading products across web and native applications. Contractor Outside of IR35 Day Rate: £400 - £500 per day   Responsibilities Being a self-sufficient individual contributor, breaking down work into manageable pieces, calling out blockers and dependencies and delivering solution in a timely manner Managing code releases to internal environments (dev, test); may also need to manage code release to external environments (production) Producing code to a high standard that not only functions correctly but...

#### 3 - 6 month contract #### Company Description UK Robotics provides cutting-edge robotics and automation solutions with expertise in turnkey and modular integrated laboratory automation systems. Our flagship product, Revolution, is a dynamic scheduler powering next-generation lab automation in the Life Science industry. Role Description We are seeking a skilled Mid-Level Frontend Engineer with strong expertise in React and modern JavaScript ecosystems to join our growing development team.This role is central to building intuitive, high-performance user interfaces for our cloud platforms and automation systems. You will focus on delivering responsive, scalable, and maintainable frontend applications that power complex scheduling systems.You will collaborate closely with backend, cloud, and robotics engineers to design seamless user experiences that bridge cloud services with real-world laboratory automation systems.This is an opportunity to work at the...

Contract Type: Fixed-term Contract (9 months, extendable) Daily Rate: £400-600 per day Location: Predominantly remote with periodic UK travel Security Clearance: SC Clearance required Start Date: ASAP The Role STSL is delivering a mission-critical biometric self-service solution for a UK government department. We need an experienced Senior DevOps Engineer with end-to-end accountability for Azure cloud infrastructure, CI/CD automation, and operational excellence. This is a hands-on, senior technical role - not team management. You'll be the principal DevOps authority working directly with government stakeholders, shaping DevOps practices for a greenfield deployment of Azure Kubernetes Service, Windows IoT device fleets, and secure biometric workloads. Your Responsibilities: · Design and implement Azure cloud infrastructure (VNets, VPN Gateway, NSGs, Private Endpoints, Application Gateway, Front Door + WAF) meeting high...

About Us: ISTARI is a strategic cybersecurity advisory company with a bold vision; to curate the defining cybersecurity ecosystem of our time, uniting enterprise, academia, government, and innovators to build collective resilience. At the heart of this mission, ISTARI helps clients achieve lasting organisational cyber resilience by convening and applying world-class talent, expertise, and innovation through a uniquely powerful network, with ISTARI as the central orchestrator. ─────────────────────────────────────────────────────── The Opportunity: We are seeking an entrepreneurial, AI-native developer to join ISTARI as a contract developer and help transform how we deliver our consulting work. You will be the founding technical resource responsible for building a suite of AI-powered internal tools that dramatically improve productivity across our Advisory practice.   This is not a traditional development role. You will be expected to leverage AI coding...

About Us: ISTARI is a strategic cybersecurity advisory company with a bold vision; to curate the defining cybersecurity ecosystem of our time, uniting enterprise, academia, government, and innovators to build collective resilience. At the heart of this mission, ISTARI helps clients achieve lasting organisational cyber resilience by convening and applying world-class talent, expertise, and innovation through a uniquely powerful network, with ISTARI as the central orchestrator. ─────────────────────────────────────────────────────── The Opportunity: We are seeking an entrepreneurial, AI-native developer to join ISTARI as a contract developer and help transform how we deliver our consulting work. You will be the founding technical resource responsible for building a suite of AI-powered internal tools that dramatically improve productivity across our Advisory practice.   This is not a traditional development role. You will be expected to leverage AI coding...

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 instruments and systems. Bonus...

AI/ML Developer - Contract Duration: Initial 6 Month Contract Rate: £500- £550 p/d Location: Sheffield This role sits within a global onboarding and KYC capability team focused on delivering modern, scalable, and user-centric digital solutions. The team brings together business, operations, and technology stakeholders to co-design platforms that improve customer experience, streamline processes, and strengthen operational resilience. The function supports enterprise-wide digital transformation efforts, enabling the move towards a more modern, future-state technology architecture. Teams collaborate across multiple global locations to design and build digital services that allow customers to onboard quickly, simply, and securely. The remit covers onboarding products, platforms, and delivery approaches aligned to agile, client-focused ways of working. Solutions are used by a broad spectrum of customers, from large corporates to small businesses. As part of...

Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) Design and develop responsive, modular, and accessible user interfaces using React Build reusable React components, shared libraries, and frontend design systems Manage complex client side state and optimize frontend performance Integrate frontend applications with REST APIs Ensure high standards of UX, accessibility, and cross browser compatibility Backend (Python) Design and implement scalable backend services using Python Develop RESTful APIs using Python frameworks such as Django / FastAPI / Flask Handle authentication, authorization, and secure data...

Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) Design and develop responsive, modular, and accessible user interfaces using React Build reusable React components, shared libraries, and frontend design systems Manage complex client side state and optimize frontend performance Integrate frontend applications with REST APIs Ensure high standards of UX, accessibility, and cross browser compatibility Backend (Python) Design and implement scalable backend services using Python Develop RESTful APIs using Python frameworks such as Django / FastAPI / Flask Handle authentication, authorization, and secure data flows Work...

Contract Type: Fixed-term Contract (9 months, extendable) Daily Rate: £400-600 per day Location: Predominantly remote with periodic UK travel Security Clearance: SC Clearance required Start Date: ASAP The Role STSL is delivering a mission-critical biometric self-service solution for a UK government department. We need an experienced Senior DevOps Engineer with end-to-end accountability for Azure cloud infrastructure, CI/CD automation, and operational excellence. This is a hands-on, senior technical role - not team management. You'll be the principal DevOps authority working directly with government stakeholders, shaping DevOps practices for a greenfield deployment of Azure Kubernetes Service, Windows IoT device fleets, and secure biometric workloads. Your Responsibilities: · Design and implement Azure cloud infrastructure (VNets, VPN Gateway, NSGs, Private Endpoints, Application Gateway, Front Door + WAF) meeting high...

Who are we: In 2019, our founders were working as engineers  solving complex cross domain problems within government organisations TwinStream was formed to consolidate their collective expertise and experience into one business, providing technical excellence and exceptional service to their clients. We have teams working both on-site with clients and remotely from home.   Day Rate: £500 - £650 Location: Hybrid working in Cheltenham (3-4 days) with possible 24/7 call out when on rota   Security Clearance: Must have live DV Clearance      About the role:   Our cross-domain services are used in high-profile government organisations. The demand for these services continues to grow in both scope and scale. We are seeking an experienced Site Reliability Engineer to help satisfy that demand. As an SRE you will be responsible for ensuring the availability, performance and cost effectiveness...

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 instruments and systems. Bonus...

Infrastructure Engineer (Trelix) - Contractor Location:  Farnborough / Feltham Working pattern:  3 days on site / 2 from home Rate: £450-550 per day (outside IR35) Duration: 6-12 months   Please note - Candidates applying should ideally be holding a high level of Government Clearance   A Little About Us: Parico is an established technology business with a history of delivering innovative and secure solutions to Public Sector customers across the United Kingdom. Our team are motivated individuals that help each other to do remarkable things every day. We face challenges together and we win together. At Parico, we deliver world-class solutions that transform the way that our clients use technology.   The Role: Parico is seeking an Infrastructure Engineer with strong experience in enterprise security platforms such as Trellix (formerly McAfee ePO) or comparable endpoint security...

Senior Backend Engineer - Contractor (Outside of IR35) Senior Software Engineer – Java (Contract - Outside of IR35) Duration: 3 Months Plus Start Date: ASAP Day Rate: £400 - 500 per day   As a  Senior Software Engineer (Java) – Contractor  at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required. Key Responsibilities: Design and develop scalable backend systems...