1 to 25 of 29 Jest Jobs

Lead Software Engineer (Node)

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £525 per day + Inside IR-35
experience with Node.js API development using REST and OpenAPI Web application development using HAPI Database expertise across PostgreSQL , MongoDB , and Redis Unit testing with Jest and Lab Source control using Git Cloud platform experience in AWS and/or Azure Containerisation technologies including Docker , Kubernetes , and ECS CI/ ...

Full Stack Developer

Hiring Organisation
Methods Consulting
Location
London, UK
Employment Type
Full-time
Services, AKS, and storage. Experience developing and consuming APIs and managing data exchange between systems. Familiarity with CI/CD pipelines, testing frameworks (JUnit, Jest, Cypress), and Git workflows. Awareness of secure coding practices, authentication (OAuth/OIDC), and identity management. Strong collaboration and problem-solving skills in multidisciplinary teams. ...

Lead Fullstack Software Engineer - Java, Springboot, Microservices

Hiring Organisation
TPXImpact Holdings Plc
Location
East London, London, United Kingdom
Employment Type
Permanent
Salary
£75,000
Automation : Implementing and maintaining continuous integration/continuous deployment pipelines to accelerate development cycles. Code Quality and Testing : Experience with automated testing frameworks (e.g., Jest, JUnit) and best practices for ensuring code quality. DevOps Practices : Expertise in DevOps, particularly around automating deployment, monitoring, and scaling applications. Communication : Able to confidently ...

Full Stack Engineer (Python, React and AWS)

Hiring Organisation
Brio Digital
Location
Leeds, West Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day
tested at interview. React: * Strong hands-on React with TypeScript * Micro Frontends using Module Federation * Reusable components, state and API data handling * Testing with Jest, React Testing Library or Cypress * Accessibility and performance Python: * Strong hands-on Python building production services * APIs consumed by React front ends * Serverless Python ...

Senior AI Consultant - Agentic AI & Generative AI

Hiring Organisation
Deerfoot Recruitment Solutions
Location
London, UK
Employment Type
Full-time
environments. Strong Python (3.10+), TypeScript, JavaScript (ES6+), SQL and Bash. Front-end: React.js, Next.js (App Router & Server Components), Tailwind CSS, ShadCN UI, Redux, Zustand, Jest, Cypress plus AI product UX patterns such as streaming, review loops, provenance/citations, long-running tasks and error recovery. Back-end: Django (5.x+ ...

Lead Full-Stack Software Engineer

Hiring Organisation
TPXImpact Holdings Plc
Location
United Kingdom
Employment Type
Permanent
Salary
£85,000
Automation: Implementing and maintaining continuous integration/continuous deployment pipelines to accelerate development cycles. Code Quality and Testing: Experience with automated testing frameworks (e.g. Jest, XUnit) and best practices for ensuring code quality. DevOps Practices: Expertise in DevOps, particularly around automating deployment, monitoring, and scaling applications. Communication: Able to confidently ...

Senior Consultant - Agentic AI / Generative AI

Hiring Organisation
Capgemini
Location
Cheshire West and Chester, United Kingdom
Employment Type
Full Time
projects demand. Languages & Frameworks: Python (3.10+), TypeScript, JavaScript (ES6+), SQL, Bash · Frontend: React.js, Next.js (App Router & Server Components), Tailwind CSS, ShadCN UI, Redux, Zustand, Jest, Cypress. Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django ...

Front-End Lead Software Engineer, Reuters

Hiring Organisation
Thomson Reuters
Location
London, UK
Employment Type
Full-time
skillsTypeScript and modern JavaScript — AdvancedReact — ExpertHTML5/CSS3 — ExpertRESTful APIs — AdvancedAWS — Intermediate to AdvancedGit version control and CI/CD pipelinesDocker containerizationAutomated testing frameworks: Jest, React Testing Library, PlaywrightPerformance optimization and security best practicesCore competenciesTechnical leadership and mentorship: guiding senior and junior engineers and setting standards the team adoptsQuality ownership ...

UI Frontend Lead engineer - AEM & AI

Hiring Organisation
LANCESOFT LTD
Location
London, UK
frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress. Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. ...

UI Frontend Lead engineer – AEM & AI

Hiring Organisation
LANCESOFT LTD
Location
south east england, united kingdom
frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress. Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. ...

Software Engineer

Hiring Organisation
Raytheon UK Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

Senior Software Engineer

Hiring Organisation
Raytheon UK Ltd
Location
Gloucester, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

Software Engineer

Hiring Organisation
Raytheon UK Ltd
Location
Gloucester, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

Principal Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

JavaScript Developer - React / TypeScript

Hiring Organisation
Ncounter
Location
London, UK
Employment Type
Full-time
HTML and CSS fundamentals, including responsive and accessible design Experience building secure applications and integrating frontend services with APIs Strong testing experience, ideally including Jest and React Testing Library Comfortable working with Git-based development, CI/CD and modern engineering practices Experience within consultancy, government, law enforcement or similarly ...

Software Developer Apprentice

Hiring Organisation
Get Staffed Online Recruitment
Location
Woking, Surrey, South East, United Kingdom
Employment Type
Permanent, Work From Home
requests and take part in code reviews Build accessible interfaces that meet WCAG 2.2 AA. Write unit tests and Playwright tests, PHPunit, Vitest/Jest Identify the cause of bugs and implement bug fixes Support Deployment to customer and internal environments Write secure code that protects users, including against cross ...

Software Engineer

Hiring Organisation
Bright Purple
Location
Remote UK, Bath, Somerset, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £475/day
frontend security Clear communication and the ability to explain technical choices to technical and non-technical people Nice to have Design system experience Jest, Jasmine, Cypress, Playwright or similar NgRx or Angular signals Web performance optimisation and tools such as Sentry Docker, AWS and modern deployment pipelines Experience in agile ...

React Native Developer

Hiring Organisation
Colossus Recruitment Ltd
Location
Sutton Coldfield, West Midlands (County), United Kingdom
Employment Type
Permanent
Salary
£45000 - £55000/annum
Services (EAS Build). Over-the-Air (OTA) updates. Experience working with maps, location services, camera integrations or push notifications. Testing frameworks such as Jest or Playwright. Monitoring tools such as Sentry. Exposure to PHP or Laravel. Experience working within Agile teams using Jira. Experience leveraging AI tools to improve ...

UI Developer- Contract

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
React, Redux, Styled Components, Apollo GraphQLUX and visual design skills are a plusThe development stack includes: TypeScript, React, Redux, Styled Components, Apollo GraphQL, Webpack, Jest, Cypress and Prettier. Familiarity with these technologies is a plus. My client is based London. ...

Snr Full Stack Python Engineer-Agentic Systems

Location
United Kingdom
building RESTful and/or tool-based APIs integrating with complex internal/external systems Testing Experience with automated testing frameworks (e.g., pytest, Jest/React Testing Library) and a quality-first mindset Collaboration Demonstrated ability to engage directly with business users to scope and refine requirements Domain Knowledge Familiarity ...

Snr Full Stack Python Engineer-Agentic Systems

Hiring Organisation
Harvey Nash
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£950 - £1000 per day
building RESTful and/or tool-based APIs integrating with complex internal/external systems Testing Experience with automated testing frameworks (e.g., pytest, Jest/React Testing Library) and a quality-first mindset Collaboration Demonstrated ability to engage directly with business users to scope and refine requirements Domain Knowledge Familiarity ...

Javascript .net Fullstack Web Application Developer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
written ES6/2015+, React, Redux, Backbone/MarionetteASP.NET WebAPI 2 using C#Production experience of an ORM – Ideally Dapper or Entity Framework 6Testing Frameworks – Jest and/or FakeItEasyPatterns & Practices – SOLID principles, Functional vs Imperative programmingExperience with Entity Framework, Dapper or a similar ORM.Experience with Test Driven Development. Proficiency with ...

Software Engineer - React

Hiring Organisation
Hackajob Ltd
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Permanent
applied experience Strong hands-on experience building enterprise web applications with React + TypeScript, including advanced component patterns. Strong experience with UI testing (e.g., Jest/React Testing Library and Cypress/Playwright) and systematic debugging/troubleshooting. Proven experience designing and delivering accessible, performant UIs (WCAG awareness, profiling, bundle ...

Senior Frontend Design Engineer - Outside IR35 - London

Hiring Organisation
Bond Williams
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
strong eye for detail and product quality Experience creating reusable component libraries and scalable frontend architecture Strong understanding of modern testing practices (Playwright, Vitest, Jest, React Testing Library etc.) Comfortable collaborating closely with engineers, product teams and non-technical stakeholders Ability to work autonomously and deliver at pace Contract Details ...

Frontend Developer (Node.js/TypeScript)

Hiring Organisation
scrumconnect ltd
Location
Leeds, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 Annual
them. Build and consume API microservices. Work with SQL or NoSQL databases, and use Redis for caching and session handling. Write automated tests with Jest or Mocha, and practise test-driven development. Follow the GOV.UK Design System and GDS standards and patterns, and meet the GDS Service Standard. Make sure … Looking For Essential: BPSS check required. Strong, hands-on experience of JavaScript, TypeScript and Node.js. Experience with Express or Fastify. Experience writing tests with Jest or Mocha. Experience with SQL or NoSQL databases. Experience with Redis and with building or using API microservices. Experience working with AWS and Azure ...