Contract Frontend Engineer Jobs

Make yourself visible and let companies apply to you.

Roles

Contract Frontend Engineer Jobs

Overview

Looking for top CONTRACT Frontend Engineer jobs? Haystack connects skilled frontend developers with leading companies offering flexible contract opportunities. Explore the latest contract frontend engineering roles and boost your career with exciting projects today!

Filters applied

Frontend Engineer

Contract

Salary

Location

Remote preference

Role type

Seniority

Tech stack

Sectors

Contract type

Company size

Visa sponsorship

React Native developer

Role: React Native DeveloperLocation: Knutsford (Hybrid)Duration: 6 monthsDay rate: £430 Umbrella OnlyWe are seeking an experienced Senior Software Engineer to join a delivery-focused engineering team building modern, scalable applications using React Native (Web) and Java. This is a hands-on role requiring strong full-stack development capability, disciplined engineering practices, and experience working in Agile environments.The role involves contributing across the full software development life cycle, from design and development through testing, deployment, and ongoing support, with a strong emphasis on code quality, security, and automation.Key Responsibilities

Design, develop, and maintain React Native (Web) applications with a focus on performance, reliability, and maintainability

Build and support Java-based Back End services for enterprise-scale applications

Design and implement RESTful APIs, including documentation using OpenAPI Specification (OAS)/YAML

Apply Test-Driven Development (TDD) principles across Front End and Back End components

Write and maintain unit tests to ensure high levels of code quality and coverage

Contribute to and support CI/CD pipelines using GitLab

Ensure code quality, maintainability, and security using tools such as SonarQube and Veracode

Work collaboratively within Agile teams, participating in ceremonies such as sprint planning, stand-ups, and retrospectives

Maintain clear and accurate technical documentation using Confluence

Track and manage development work using Jira

Required Skills & Experience

5+ years’ experience developing React Native (Web) applications in a production environment

5+ years’ experience with Java development

Strong experience in RESTful API design and development

Hands-on experience with TDD and automated testing practices

Solid experience with GitLab, including CI/CD pipelines

Experience producing and maintaining OpenAPI (OAS)/YAML specifications

Strong understanding of unit testing frameworks and best practices

Proven experience working in Agile/Scrum delivery environments

Python React Developer

Stott & May Professional Search Limited

Python + React DeveloperLocation: UK (Remote) Day Rate: Market Rate (Inside IR35) Contract Duration: 6 monthsOverviewWe are seeking a talented Python + React Developer to join a fast-paced engineering team supporting ongoing digital transformation initiatives. The ideal candidate will be adaptable, collaborative and proactive, with a passion for delivering high-quality solutions.The RoleYou will design, develop and support modern applications using Python and JavaScript frameworks, working with cross-functional teams to deliver scalable and secure solutions. You will play a key role in helping drive technical excellence, unblock delivery challenges and contribute to continuous improvement across the engineering landscape.Key Responsibilities(Examples you can pick from-no duplication)

Collaborate with Solution Architects to shape technical solutions and contribute to design decisions

Work closely with engineering teams to build, test and deliver high-quality software

Lead and participate in planning, delivery and execution of internal and cross-functional projects

Act as a technical expert for platforms and services under development

Keep abreast of platform changes, tooling enhancements and industry trends

Champion modern development practices, automation and engineering standards

Identify and remove technical blockers to ensure steady delivery progress

Troubleshoot and resolve technical and security-related issues

Build and maintain strong working relationships with technology, product and operational teams

Identify performance bottlenecks and recommend practical improvements

Candidate ProfileEssential Skills & Experience

Strong commercial experience with Python

Proficient in JavaScript frameworks, ideally React (Angular also considered)

Comfortable working in dynamic environments undergoing change

Ability to work both autonomously and collaboratively within distributed teams

Experience supporting modern digital delivery within agile environments

Desirable Skills & Experience

Exposure to cloud platforms (AWS, Azure or GCP)

Experience with CI/CD pipelines and DevOps practices

Familiarity with API design and microservices

Knowledge of containerisation technologies (Docker/Kubernetes)

Senior Laravel Developer

United Grand Lodge of England

United Grand Lodge of England are looking to hire a Senior Laravel Developer for our IT department.BackgroundUGLE is the governing body of Freemasonry in England, Wales, the Channel Islands, the Isles of Man consisting of 48 Provinces roughly based on the old county boundaries and 32 Districts overseas. English Freemasonry is a membership organisation of175,000 people meeting in more than 7,000 Lodges across the globe. Membership is open to any man over the age of 18 irrespective of their background, race or religion, with students also able to join one of 87 University Scheme Lodges. The largest Province in UGLE is Metropolitan in London with many Lodges meeting at Freemasons Hall in Covent Garden which also serves as the Headquarters for English Freemasonry worldwide.Freemasons Hall is a unique art deco building which can date its origins back to 1769 when Freemasons first started meeting at this site. The current building was completed in 1933 as a memorial to those who died in the Great War. It houses 22 meeting rooms including some unique spaces regularly used for major international events and as film locations. The Hall itself provides a magnificent meeting place for UK and international masonic lodges. It is open to both Freemasons and the general public who are provided with both self-guided audio tours as well as guided tours of the facilities.The Museum of Freemasonry with one of the finest collections of masonic artefacts and archives in the world, is housed within the building.The United Grand Lodge of England is an equal opportunities employer.Purpose of the Job:This role is a key position within the development team, responsible for designing, developing, and maintaining modern systems built using Laravel, PHP, Vue, TypeScript, MySQL, and associated AWS services. The role supports both innovation on new systems and the transition of legacy functionality into a modern, scalable architecture. The postholder will work across backend and frontend layers, contribute to architectural decisions, ensure best practices in testing and security, and support the wider team through technical leadership and mentoring.Key ResponsibilitiesCo-design the application architecture across clear, modular service layersLead the development and delivery of complex system featuresExpand automated testing and improve overall code reliabilityOptimise performance, deep caching, schema design, and query efficiencyEnsure robust security and apply awareness of penetration testing considerationsApply domain-driven design and well-architected application principlesLead technical discovery, scoping, and solution design activitiesPresent technical approaches and architectural decisions to stakeholdersMentor team members and support the development of engineering best practiceBuild and enhance Vue-based SPA and PWA interfaces using TypeScriptDevelop, document, and maintain high-quality APIsWork with AWS services including SES, SQS, and RDSOperate within a fully containerised, auto-scaling, multi-environment deployment architectureMaintain all development work within the corporate GitHub environment using branches, merges, and pull requestsMaintain up-to-date knowledge of relevant backend and frontend engineering practices, including performance, UX/UI considerations, and modern frameworksSkills

Excellent communication

Problem solving

Ability to work effectively as part of a team

Salary:Competitive salary plus the following benefits package:Private medical coverPension (3.5% employee & 9% employer contributions increasing to 12% with length of service)Life AssuranceHoliday (25 days increasing to 30 days with length of service)Interest free season ticket loanGym membership (subsidised)Health and Wellbeing BenefitsFlexible workingHours:The successful applicant is required to work 35 hours per week Monday to Friday.Application details:To apply please send your CV and covering letter to: Rosey Hogan HR Officer - United Grand Lodge of EnglandPlease ensure that your CV/covering letter evidences the necessary skills and how your experience to date matches the requirements for the role.CVs received without a covering letter will not be considered.Closing date for applications is close of business (5pm) on Friday 30 January 2026.

Senior Front End Developer

United Grand Lodge of England

Senior Front-End DeveloperUnited Grand Lodge of England are looking to hire a Senior Front-End Developer for our IT department.BackgroundUGLE is the governing body of Freemasonry in England, Wales, the Channel Islands, the Isles of Man consisting of 48 Provinces roughly based on the old county boundaries and 32 Districts overseas. English Freemasonry is a membership organisation of175,000 people meeting in more than 7,000 Lodges across the globe. Membership is open to any man over the age of 18 irrespective of their background, race or religion, with students also able to join one of 87 University Scheme Lodges. The largest Province in UGLE is Metropolitan in London with many Lodges meeting at Freemasons Hall in Covent Garden which also serves as the Headquarters for English Freemasonry worldwide.Freemasons Hall is a unique art deco building which can date its origins back to 1769 when Freemasons first started meeting at this site. The current building was completed in 1933 as a memorial to those who died in the Great War. It houses 22 meeting rooms including some unique spaces regularly used for major international events and as film locations. The Hall itself provides a magnificent meeting place for UK and international masonic lodges. It is open to both Freemasons and the general public who are provided with both self-guided audio tours as well as guided tours of the facilities.The Museum of Freemasonry with one of the finest collections of masonic artefacts and archives in the world, is housed within the building.The United Grand Lodge of England is an equal opportunities employer.Purpose of the Job:This role is a key position within the development team, responsible for implementing high-quality front-end interfaces across a data-rich SPA admin application and a mobile-focused PWA membership application. The post holder will work closely and contribute to the UX and design function, collaborating alongside Laravel backend developers to deliver performant, accessible, maintainable front-end solutions using Vue, TypeScript, Playwright, and utility-based CSS frameworks. They will help guide front-end architecture, maintain quality standards, and mentor other team members.Key ResponsibilitiesImplement front-end interfaces using Vue, TypeScript, and utility-based CSS frameworksCollaborate with and contribute to the UX, design, and backend development functionsAssist in front-end architectural decisions including component design and state managementBuild modular, reusable front-end components suitable for SPA and PWA environmentsMaintain cross-browser and legacy compatibilityDevelop and maintain automated Playwright test suitesIntegrate front-end applications with backend APIsContribute to discussions around micro frontend strategiesOptimise performance, accessibility, and responsivenessMaintain development work within GitHub using branches, merges, and pull requestsMentor junior and mid-level developersMaintain up-to-date knowledge of modern front-end engineering practicesManaging complex admin workflowsEnsuring system capabilities (in terms of UI/UX) for high volume data entryEnsuring UI/UX design is fault tolerant and easy/intuitive to useSkills

Excellent communication

Problem solving

Ability to work effectively as part of a team

Salary:Competitive salarly plus the following benefits package:Private medical coverPension (3.5% employee & 9% employer contributions increasing to 12% with length of service)Life AssuranceHoliday (25 days increasing to 30 days with length of service)Interest free season ticket loanGym membership (subsidised)Health and Wellbeing BenefitsFlexible workingHours:The successful applicant is required to work 35 hours per week Monday to Friday.Application details:To apply please send your CV and covering letter to: Rosey Hogan HR Officer - United Grand Lodge of EnglandPlease ensure that your CV/covering letter evidences the necessary skills and how your experience to date matches the requirements for the role.CVs received without a covering letter will not be considered.Closing date for applications is close of business (5pm) on Friday 30 January 2026.

Senior iOS Software Engineer - £400 Inside IR35

Senior iOS Software Engineer£400 per day | Inside IR35 Contract: 12 months Hybrid: 1-2 days per week on-site in SalfordWe’re looking for a Senior iOS Software Engineer to join a high-performing mobile engineering team working on core media playback components used at scale. This role is hands-on and suited to someone with strong iOS fundamentals, a testing-first mindset, and experience modernising large codebases.You’ll play a key role in evolving a complex iOS platform, including the migration to a more scalable architecture using Swift Package Manager.What you’ll be doing

Developing and maintaining core iOS components using Swift and Objective-C

Working on shared libraries and packages that support large-scale mobile applications

Leading and contributing to migrations from CocoaPods to Swift Package Manager (SPM)

Writing high-quality, testable code with a strong focus on TDD

Building and maintaining comprehensive unit test coverage

Collaborating closely with other engineers in a mature, delivery-focused team

Essential experience (must be recent - last 12 months or last project)

Strong commercial experience with Swift and Objective-C

Proven hands-on experience using Swift Package Manager (SPM)

Experience migrating large or complex iOS projects from CocoaPods to SPM

Strong experience with Test-Driven Development (TDD)

Writing and maintaining high-quality unit tests

Experience working on complex, production-scale iOS codebases

Contract details

Rate: £400 per day (Inside IR35)

Location: Salford (1-2 days per week on-site)

GreetingsWe are Hiring Android Developer position in Bristol, UKcontract6+ MonthsHybrid model, 3 days onsite per week 2 days remoteAbout the teamOur team isaccountable for security within the mobile channel. Weprovide a suite of mobile security components,that provides an all-round security posture in mobile appsincluding associated services (penetration testing, obfuscation, consultancy etc.).Our mission is tobuild a scalable, adaptable, and proactive approach to securing LBGs mobile apps, enabling mobile engineers across the bank to operate with confidence and agility in an ever-evolving threat landscape.Were passionate about our shared passion for delivering new features for customers across our brands in the mobile space.Were looking for a self- motivated Senior Android Engineer, proficient in Android mobiledevelopment. Youll have technical know-how from crafting, developing, and producing mobilecomponents and services, stakeholder management working closely with strategy teams to architect, design and implement solutions.What we need from you / essential skills & experience:Excellent knowledge of Kotlin/Java. Strong knowledge of Android SDK, Android UI design principles, patterns, and best practices Experience with offline storage, threading, and performance tuning Awesome knowledge of the open-source Android ecosystem and the libraries available for common tasks and benchmarking and optimisation Proficient in Google’s Android design principles, interface guidelines and code versioning tools, such as Git Applying SOLID Principles MVVM/MVI architecture, Android Architecture Components and other Jetpack libraries Jetpack Compose Working in a modularised codebase UI testing

Front End Developer

Andy File Associates Ltd

Andy File Associates is working as a Recruitment Agency on behalf of our client with regards this 12 month fixed term contract of Front End Developer.Our client is seeking a Front End Developer to join their team on a 12 month fixed term contract with the potential for a permanent position subject to performance and business needs.Job Title: Front-End DeveloperWorking closely with Marketing and Communications and IT teams, this role contributes to the design, development, and ongoing improvement of high-quality digital interfaces across our products. As part of a small but influential team, the successful candidate will help shape user-centred UI standards and design systems that enhance engagement, support lead generation, and ensure consistent, accessible, and seamless experiences across all digital touchpoints.Job function Contributing towards the design process, including creating prototypes, mock-up s, and wireframes Translating design mock-up s and prototypes into functional, responsive, and maintainable code Creating and maintaining component libraries and design systems to ensure consistency across products Advocating for best practices in usability, accessibility, and performance Staying up to date with emerging trends, tools, and technologies in UX and front-end development Any other duties and responsibilities as required as the role developsKnowledge and skills Technical Proficiency: Strong skills in HTML, CSS, and JavaScript for crafting interactive and responsive interfaces Design Understanding: Solid knowledge of UX/UI design principles, wireframing, and prototyping tools Solution Design: Experience refining the technical specification for new developments Accessibility: Comprehensive understanding of accessibility standards and inclusive design practices Problem-Solving: Strong analytical and problem-solving skills to identify and address UX challenges Communication: Excellent verbal and written communication skills to effectively articulate ideas and technical conceptsExperience Proven experience in a UX Engineering/Front-End Development, or similar role Demonstrated ability to build scalable and reusable UI components Hands-on experience conducting usability testing and interpreting results Familiarity with version control system, Subversion (SVN)Desirable Skills • Familiarity with JavaScript frameworks (e.g. React) and collaborative development workflows • Basic PHP knowledge to support templating and dynamic content • Understanding of web performance optimisation and SEO best practices • Additional creative skills (e.g. graphic design, video editing, photography, illustration) are an advantage • Willingness to contribute creatively beyond core UI development • Portfolio or examples of creative work welcomed but not essentialRole Responsibilities • Provide timely and professional telephone and email support to internal and external customers • Liaise with internal teams to resolve customer queries effectively • Understand and interpret user and business requirements • Learn and develop knowledge of the company s software and related products for marketing purposes • Maintain a professional, customer-focused approach in line with company standards • Use a broad range of IT systems and maintain accurate in-house database records • Produce regular updates and reports for senior management • Work collaboratively to achieve team performance targets • Identify opportunities for additional product or training sales and refer appropriatelyOther details Core hours are 08:30 - 17:00, Monday to Friday. Salary range £35-38K - dependant on skills 20 days annual leave plus stats 12 month contract with view to permanencyOffice based in Rotherham 2-3 days a week in the office Local to the location as office time and face to face meetings as and when required

Full Stack Engineer (Java / React)Tier-1 Bank Long-term Programme Sheffield (Hybrid)This is not a sandbox. This is not a proof of concept that never leaves PowerPoint.This is real engineering, on a live Tier-1 banking platform, with production impact from day one.Adept Resourcing are partnering with a Tier-1 bank delivering a major, ongoing KYC transformation programme. We’re looking for experienced Full Stack Engineers (Java / React) who are comfortable operating at pace, shipping code regularly, and owning what they build.Initial 6-month contract, with a strong likelihood of extension. Hybrid working: 3 days per week onsite in Sheffield.Salary: 525 per dayWhat you’ll actually be doing

Writing production-grade code in a modern Java + React stack

Building and supporting microservices-based architectures that are already live

Designing, building and deploying RESTful APIs at scale

Shipping changes to production frequently and safely

Working closely with architects, product and global engineering teams

Spotting risks early, removing blockers, and communicating clearly when things matter

Improving how things are done, not just delivering tickets

This is a role for engineers who care about quality, understand trade-offs, and don’t need hand holding.What we’re looking forEssential

Strong background as a software engineer, not just a coder

Solid, recent Java experience

ReactJS front-end experience in real-world applications

Hands-on delivery within a microservices architecture

Experience deploying to production at a high cadence

Proven experience building and consuming RESTful APIs

Schema design and database experience with PostgreSQL

Nice to have

Containers and orchestration (Docker, Kubernetes)

Exposure to GCP

Experience in banking or financial services

Why this role stands out

Tier-1 bank, enterprise scale, real constraints

Long running programme with runway, not a stop gap contract

Engineers who deliver matter here

Clear expectations, strong engineering culture, no nonsense

At Adept Resourcing - Commercial & Engineering, we specialise in connecting companies with top talent that drives innovation, growth and success. With our industry expertise, extensive network and personalised approach, we’re here to help you.

Full Stack Engineer (Java / ReactJS)

Adept Resourcing are recruiting on behalf of a Tier-one bank, on a ongoing KYC project, looking for Full Stack Engineers (Java / Rreact JS) for an initial 6 month project (highly likley to renew). This is a hybrid role, with 3 days a week in the Sheffield office.Responsibilities

Hands-on development, delivering production-grade code aligned to a microservices-based architecture

Supporting system architecture and design in line with engineering best practices

Maintaining awareness of business, engineering, and non-functional requirements

Driving and contributing to a strong engineering culture across teams

Collaborating with global teams across multiple regions

Proactively identifying risks, removing impediments, and communicating issues to programme management

Identifying process inefficiencies and implementing innovative, programmatic improvements

Required Experience

Strong software engineering background with proven experience designing, developing, and deploying backend applications

Java (preferably recent versions)

Front-end development using ReactJS

Experience delivering solutions within a microservices architecture

Regular delivery of changes to production at high cadence

Building and delivering RESTful APIs to production

Experience designing schemas and working with PostgreSQL databases

Desirable Experience

Containers and orchestration technologies (Docker, Kubernetes) and exposure to GCP

Previous experience within the banking or financial services sector

Please apply for immediate consideration.At Adept Resourcing - Commercial & Engineering, we specialise in connecting companies with top talent that drives innovation, growth and success. With our industry expertise, extensive network and personalised approach, we’re here to help you.

AI Solutions Developer

£250,000/day - £350,250/day

RECENTLY POSTED

TECH-AGNOSTIC ROLE

Your new company This growing organisation based in Wales is looking to take the next step on their digital journey and integrate AI Agents to support the expanding workforce.Your new role We are seeking an experienced AI Solutions Developer to design and implement a front-end Copilot agent for employee interaction. The AI Agent solutions will provide guidance on legislation, standards, and internal processes, act as a triage service, and enforce continuity within the business, providing users guiderails. Some of the key areas of this role are:-Design and build multiple Copilot agents using Microsoft Copilot Studio.-Integrate knowledge sources (SharePoint, OneDrive, internal databases) via Microsoft Graph connectors. -Configure grounding and guardrails to ensure compliance and accuracy. -Develop Power Automate flows for triage and escalation workflows. -Test and optimise the conversational threads of the AI Agents that you build for clarity and user experience. -Provide documentation and training for internal teams.What you’ll need to succeed Proven experience with Microsoft Copilot Studio and Power Platform.Strong knowledge of Microsoft 365 ecosystem (Teams, SharePoint, Graph API). Ideally, familiarity with Azure AI services and OpenAI integration. Expertise in prompt engineering and conversational design. Understanding of data governance, compliance, and security. Ability to create custom connectors and integrate external systems. Excellent communication and stakeholder engagement skills. This role could potentially extend to rolling out AI Agent user training and adoption of Copilot.What you’ll get in return Flexible working options available. This includes being able to work on a full or part-time contract depending on current commitments. Working on an exciting project which will transform the organisation and be a great support for the whole workforce. Great Contractor day rateWhat you need to do now If you’re interested in this role, and you have had this experience before, click ‘apply now’ to forward an up-to-date copy of your CV, or call us now on (phone number removed). Please also share it with anyone you feel could be a good fit.Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C’s, Privacy Policy and Disclaimers which can be found at (url removed)

Net Software Engineer

2x Senior .NET Developers - Public HealthJob Title: .NET DeveloperLocation: 1x/Month in LeedsDay Rate: 500/day Inside IR35Duration: Until March 2026NHS or Central Government experience is ESSENTIALBrio Digital are supporting a HealthTech consultancy who are currently looking for 2x .NET Software Engineers. You’ll be working on a national-level programme supporting an ongoing digital transformation project.What You’ll Do

Build and maintain robust APIs and web applications using .NET and React

Collaborate with cross-functional teams to deliver modern, Azure-hosted solutions

Develop clean, testable, and maintainable code across the full stack

Integrate with complex healthcare data systems and APIs

Support continuous improvement across architecture, tooling, and CI/CD pipelines

Participate in design reviews and mentoring within an agile delivery team

What You’ll Bring

Solid C#/.NET Core experience in production systems

Proficiency with React and TypeScript

Strong experience with Microsoft Azure (App Services, Azure Functions, Azure DevOps, etc.)

Exposure to healthcare, NHS, or data integration environments

Understanding of RESTful APIs, microservices, and unit testing

Experience with Git, Azure DevOps Pipelines, and agile delivery practices

Strong problem-solving and communication skills

Nice-to-Have

Knowledge of HL7/FHIR or other healthcare data standards

Experience with serverless architectures or containerisation (Docker, AKS, etc.)

Familiarity with Terraform or other IaC tooling

Interest in improving public sector tech capability

Front End Developer - Vue.js - Outside IR35Front End Developer required on a 6-month contract by a leading data-driven software and analytics organisation based in Manchester.Your new role:You’ll be joining a highly collaborative development team within a global organisation recognised for delivering advanced digital products used across the insurance and risk-analysis sectors. They’re continuing a major transformation of their customer-facing platforms, and you’ll play a key part in building fast, modern, and scalable frontend applications.You’ll lead the frontend development stream, bringing strong commercial experience with Vue 3 and TypeScript. You’ll be heavily involved in requirements gathering, architectural discussions, development, and delivery. Close collaboration with designers, backend engineers, project leadership, and business stakeholders will be essential to ensure successful delivery against tight deadlines.You’ll need a strong background in building high-performance, modern interfaces and be comfortable working in a technically mature environment.Required Skills:

TypeScript

Vue, Nuxt

Experience integrating and working with APIs authentication, REST, RPC, GraphQL, tRPC

The Rate:For the right person, the day rate is 450 - 500, Outside IR35.This is a hybrid role based in Manchester, with an initial 6-month contract and strong potential for extension.If you’re keen to join a brand-new build and contribute from the ground up, it would be great to hear from you. Apply now or reach out to Andy at Cathcart Technology for more information.Cathcart Technology is acting as an Employment Business in relation to this vacancy.

Lead JavaScript Developer

JavaScript Developer £450 p/d (Outside IR35) Manchester Hybrid - Tuesday and Thursday are office days. We are seeking a contract JavaScript Developer at lead level for a role in Manchester. Think full stack Vue.js and Node.js and taking full ownership of architecture and code. TypeScript is a must and insurance experience would be a huge help. Essential skills needed:

TypeScript an absolute must

Vue 3 needed as mainly frontend

Node needed to complete the tech stack

Real-world API experience: authentication, REST, RPC, GraphQL, tRPC

Desired skills:

Server Side Rendering and Edge Rendering chops

Testing experience: Unit, Component, Automation (Cypress, Playwright the usual suspects)

Design tool competency (Figma / Adobe XD)

If you re into modern JavaScript, clean architecture, and delivering amazing Vue, Node and TypeScript solutions then this role is for you. If you are keen APPLY NOW as this opportunity will move fast! Bright Purple is an equal opportunities employer: we are proud to work with clients who share our commitment to diversity and inclusion in the industry.

Job Title: UI DeveloperLocation: Bromley Working Pattern: Full Time, Hybrid - 3 days in the office Contract Length: 12 months with potential for extending Daily rate: Circa 700per day via an UmbrellaAre you a passionate UI Developer looking to make an impact in the finance industry? Do you thrive on building modern, scalable, and user-friendly web interfaces? If so, we have an exciting opportunity for you to join our client’s dynamic team!About the Role:As a UI Developer, you will be at the forefront of developing innovative user interfaces for a cutting-edge Generative AI platform. Collaborating with talented professionals in Global Markets Sales & Trading and Quantitative Strategies, you will harness the power of data to drive insights and transform business processes.Key Responsibilities:

Design, develop, and maintain reusable UI components using React and TypeScript.

Implement responsive and accessible interfaces that meet enterprise standards (e.g., WCAG).

Collaborate with product managers, UX designers, and backend engineers to deliver high-quality features.

Integrate with RESTful APIs and manage application state using Redux Toolkit and RTK Query.

Incorporate Vercel AI SDKUI components to enhance chatbot functionality and user experience.

Ensure code quality through unit and integration testing with Vitest and React Testing Library.

Participate in code reviews and contribute to architectural decisions.

Optimize performance and troubleshoot issues across various browsers and devices.

What You Bring:Required Skills & Experience:

Experience developing modern web applications with React and TypeScript.

Expert knowledge in JavaScript/TypeScript

Strong understanding of component-based architecture and state management.

Hands-on experience in Python service-side development and APIs (e.g., FastAPI).

Familiarity with testing frameworks (Vitest, React Testing Library) and pytest for Python.

Experience with CI/CD tools and collaborative development workflows using Git/Bitbucket.

Non-Technical Skills:

Self-starter with excellent analytical and problem-solving abilities.

Detail-oriented and highly organised.

Strong communication skills to collaborate with business stakeholders and technical teams.

Adaptable to shifting and competing priorities.

Committed to delivering high-quality service.

Preferred Qualifications:

Experience with schema validation using Zod.

Familiarity with component documentation tools (e.g., Storybook).

Understanding of performance optimisation techniques for large-scale applications.

Experience developing frameworks and tools specific to AI/ML

Familiarity with cloud platforms and development in cloud environments.

Why Join Us?At our client’s organisation, you will enjoy a collaborative and inclusive workplace that values your contributions. They are committed to your professional growth and well-being, offering competitive benefits that support your physical, emotional, and financial health.This is more than just a job; it’s an opportunity to work on innovative projects that make a difference. You’ll be part of a team that believes in Responsible Growth, ensuring a positive impact on clients, communities, and shareholders.Ready to Make a Difference?If you’re excited about leveraging your skills in a fast-paced environment and contributing to a groundbreaking Generative AI platform, we’d love to hear from you!Apply Today!Join us in shaping the future of finance through technology and innovation. Your journey starts here!We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention.Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.

Full Stack Developer

Stott & May Professional Search Limited

+11

Role Title: Full Stack Developer Location: Warwick (Hybrid - 3 days per week on-site) Day Rate: £510 Inside IR35 Duration: 6 monthsRole OverviewWe are seeking a highly skilled Full Stack Developer to join a team on a contract basis. The successful candidate will play a key role in designing, developing and maintaining robust front-end and back-end solutions, while contributing to technical strategy and best practice within an Agile environment.Key Responsibilities

Design, develop, verify, test, document and refactor complex applications, scripts and integration services

Participate in and lead peer code reviews to ensure quality and adherence to standards

Select and apply appropriate development methods, tools and techniques

Collaborate closely with Solution Architects to shape and formalise new solution designs

Work alongside Product Owners, QA, UX, engineers and end users to deliver features aligned to business and user needs

Provide mentorship and guidance to junior team members

Play an active role in Agile ceremonies and contribute to team culture and delivery excellence

Your ProfileEssential Skills & ExperienceFront-End Development:

React (including Hooks)

SWR for REST API integration

Next.js

Styled Components

HTML, Modern JavaScript & CSS

Jest

Back-End Development:

ASP.NET Core (v8+)

Entity Framework Core (v8+)

xUnit

SQL

Desirable / Nice-to-Have Skills

SAFe 6.0 Certification

Experience working in a SAFe / Agile environment

Development Tools & Practices

GitHub

Jira & Confluence

Kanban

Test Driven Development

Docker (basic working knowledge)

React Native developer

Role: React Native DeveloperLocation: Knutsford (Hybrid)Duration: 6 MonthsDay rate: 430 Umbrella OnlyWe are seeking an experienced Senior Software Engineer to join a delivery-focused engineering team building modern, scalable applications using React Native (Web) and Java. This is a hands-on role requiring strong full-stack development capability, disciplined engineering practices, and experience working in Agile environments.The role involves contributing across the full software development lifecycle, from design and development through testing, deployment, and ongoing support, with a strong emphasis on code quality, security, and automation.Key Responsibilities

Design, develop, and maintain React Native (Web) applications with a focus on performance, reliability, and maintainability

Build and support Java-based backend services for enterprise-scale applications

Design and implement RESTful APIs, including documentation using OpenAPI Specification (OAS) / YAML

Apply Test-Driven Development (TDD) principles across frontend and backend components

Write and maintain unit tests to ensure high levels of code quality and coverage

Contribute to and support CI/CD pipelines using GitLab

Ensure code quality, maintainability, and security using tools such as SonarQube and Veracode

Work collaboratively within Agile teams, participating in ceremonies such as sprint planning, stand-ups, and retrospectives

Maintain clear and accurate technical documentation using Confluence

Track and manage development work using Jira

Required Skills & Experience

5+ years’ experience developing React Native (Web) applications in a production environment

5+ years’ experience with Java development

Strong experience in RESTful API design and development

Hands-on experience with TDD and automated testing practices

Solid experience with GitLab, including CI/CD pipelines

Experience producing and maintaining OpenAPI (OAS) / YAML specifications

Strong understanding of unit testing frameworks and best practices

Proven experience working in Agile / Scrum delivery environments

Senior Software Engineer | Public Sector Contract | VanillaJS/Node/Nunjucks

Senior Software Engineer

Vanilla JS/Node/Nunjucks

Contract: 3m initial term with possible extension (12m+ projects)

Up to £475(I)/day (d.o.e)

Public sector client

Remote first: Hiring around the UK - 1 office day per month

As part of a long-term partnership, we are seeking several Senior Software Engineers for a critical public sector organisation. Consultants are typically employed on an initial 3 month basis but are regularly extended as these longer term projects evolve with fresh avenues, challenges and highly testable features to be delivered at scale.We are looking for Senior Software Engineers, experienced with Vanilla JS, Node and Nunjucks and great communication skills. They actively encourage technical leadership, vocal and unique problem solving, cross-team collaboration, communication to build things the right and sustainable way for the user and organisation, not just the cheapest or fastest way.Interested? Apply within for further details.

Senior Salesforce Developer

Contract Role Salesforce & React Native Developer Manchester/Hybrid 12 months initial Inside IR35Role Overview:

Job Title: Salesforce & React Native Developer

Location: Hybrid 2-3 days onsite per week in Manchester

Contract Type: Contract

Duration: 12 months initial

Rate: £500-550 per day (Inside IR35)

Sector: Banking

Key Skills & ExperienceSalesforce +5 years experience AND/OR React Native (Web) +5 yearsJava +5 yearsTDD, BDDRESTful API design & buildOAS/YAMLUnit TestingGitLabCI/CD PipelinesAgile practitioner, SonarQube, Veracode, Jira, ConfluenceBanking/Financial services background ideallyPlease feel free to contact myself Daisy Nguyen at Gibbs Consulting/Atrium UK for a confidential chat to know more details about the role.Please also note: Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for interview will be contacted.

GUI Software Engineer - SC Clearance Required

Our client, a specialist in the Defence & Security sector, is currently seeking a GUI Software Engineer to join their team in Hampshire on a contract basis.Key Responsibilities:

Designing and implementing efficient real-time systems

Understanding and applying new and emerging technologies

Developing new features for the Electronic Warfare suite of software

Contributing to diverse projects spanning domains such as Array Processing, Communications, and Sensors

Job Requirements:

Expertise in GUI and GUI Design

Proficiency in C# for user interface development and associated services

Competence in C++ for services and DSP

Experience with unit and system testing

Familiarity with modern DevOps practices, including version control and continuous integration

Desirable Skills:

Experience in developing UI for scientific or technical applications

Knowledge of WPF for user interfaces

Experience with SQL databases

Understanding of modern communication protocols, e.g. REST / Websockets

Knowledge of the latest Software Defined Radio (SDR) platforms

Awareness of electronic warfare principles

If you are a talented GUI Software Engineer with experience in the Defence & Security sector, we invite you to apply now and join our client’s innovative team in Hampshire. This is a unique opportunity to make a significant impact on critical projects. Apply today to explore this exciting role.

Senior Web Developer

First Recruitment Group

Join a forward-thinking engineering team as a Senior Web Developer, delivering modern web solutions in a flexible hybrid role.This organisation is part of a global energy group and provides engineering expertise supporting international projects across the energy sector.The UK operation is based in an integrated engineering office, supporting the transition from traditional energy activities to decarbonised and innovative solutions, including Carbon Capture & Storage (CCS), renewables, hydrogen, and other low-carbon technologies. This is an exciting time to join the UK and international energy sector, with opportunities to develop skills in new technologies and contribute to a net-zero future.Main Duties

Work as part of a multi-skilled Web Development team as a Full Stack Developer, rebuilding and supporting on-site web applications using modern frameworks

Design, develop, and implement bespoke software solutions

Assist internal stakeholders with requirements analysis and solution design

Design, manage, and integrate SQL databases

Interface web applications with other corporate systems

Provide end-user support, including bug fixing and change control

Develop and maintain technical and user documentation

Contribute to test plans and User Acceptance Testing (UAT)

Deliver training sessions, tutorials, and technical presentations

Set up and document SQL databases supporting web development

Promote and adopt new software development ideas and practices

Ensure all development complies with internal ICT policies and procedures

Cyber Security Web Applications

Collaborate with central teams to resolve vulnerabilities identified through cyber security scans

Coordinate timely and structured remediation of identified web application vulnerabilities

Provide prompt responses to global cyber security alerts

Work cross-functionally with Infrastructure and Service Desk teams to resolve security issues impacting web applications

Actively contribute to improving corporate cyber security awareness and culture

Technical Skills & Experience

JavaScript / jQuery

Java / Groovy

HTML and CSS

Grails experience is advantageous

Working Experience

MS SQL Server databases, including database design

IDE tools (preferably IntelliJ)

Spring and Hibernate

Source control systems (preferably Git / DevOps)

Personal & Professional Skills

Creative, highly motivated, and proactive

Strong interpersonal and communication skills

Ability to work independently and as part of a team

Experience developing web-based and intranet solutions

Familiarity with Agile development practices

Strong ability to gather data and translate business requirements into technical solutions

Customer-focused with the ability to support all aspects of product development

Education

Degree-level education or equivalent professional experience

Demonstrable experience in application design and development

Company informationAt First Recruitment Group we understand just how important it is to secure the right people. That is why our Recruitment Consultants always take the time to understand requirements in detail and offer sound advice to both clients and candidates. We actively recruit at all levels and this is a superb opportunity for any Web Developer looking for new employment.As part of putting people first, we strive to be an equal opportunities employer and we are always looking to increase the diversity of our workforce, working closely with our clients to ensure everyone is included.

Role: Front End DeveloperLocation: Remote - Occasional travel to CroydonDuration: 12 MonthsDay rate: 520 Umbrella OnlySC clearance requiredAbout the RoleWe are looking for a skilled Front-End Engineer to join our team and help build high-quality, user-focused web applications. You’ll work closely with designers, product managers, and backend engineers to deliver maintainable front-end solutions using modern web technologies.Responsibilities

Build and maintain scalable front-end applications using React

Develop clean, reusable, and well-structured code using TypeScript and JavaScript

Translate designs and product requirements into high-quality UI components

Optimize applications for performance, accessibility, and cross-browser compatibility

Collaborate with cross-functional teams to deliver features end-to-end

Write and maintain front-end tests to ensure application quality (where applicable)

Required Skills & Experience

Strong experience with React (React.js / ReactJS)

Proficiency in TypeScript and JavaScript for browser-based applications

Solid understanding of modern front-end development practices (ES6+, component-based architecture)

Experience working with REST APIs and asynchronous data handling

Familiarity with Git and collaborative development workflows

Nice to Have

Experience with Playwright for front-end or end-to-end testing

Exposure to other testing tools or frameworks

Understanding of accessibility (WCAG) and performance best practices

Experience working in agile or product-driven teams

Page 1 of 2

Frequently asked questions

What types of contract Frontend Engineer jobs are available on Haystack?

Haystack offers a variety of contract Frontend Engineer positions, ranging from short-term projects to long-term contracts across different industries, including startups, tech companies, and agencies.

How do I apply for contract Frontend Engineer jobs on Haystack?

To apply, simply create a profile on Haystack, upload your resume, and browse the available contract Frontend Engineer listings. When you find a job that fits, click the apply button and follow the instructions provided.

Are contract Frontend Engineer roles remote or on-site?

Both options are available. Many contract Frontend Engineer jobs on Haystack offer remote work opportunities, but some may require you to work on-site depending on the employer's requirements. You can filter jobs based on your preference.

What skills are typically required for contract Frontend Engineer positions?

Common skills for contract Frontend Engineers include proficiency in JavaScript frameworks like React, Angular, or Vue.js, HTML, CSS, version control systems like Git, and experience with responsive design and cross-browser compatibility.

Can I negotiate contract terms such as duration and pay through Haystack?

Haystack facilitates the connection between you and the employer but contract negotiations including duration, pay rate, and other terms are typically handled directly between the contractor and the employer once you are shortlisted or offered the job.

Terms

Feedback

Contact

Careers