1 to 25 of 35 Unit Testing Jobs in London

Software Test and Validation Engineer

Hiring Organisation
Insignis
Location
Greenwich, London, United Kingdom
Employment Type
Temporary
develop and execute comprehensive test programmes, perform system-level tests, and provide detailed feedback to support product improvements. Key Responsibilities: Independently plan and execute unit testing and system integration testing . Perform embedded software unit testing to verify functionality, accuracy, and reliability of individual components … Conduct software integration testing , verifying interactions between software, hardware components, subsystems, and external interfaces. Suggest simulation or emulation techniques to improve system-level testing. Recommend and implement automated testing frameworks and tools to optimise processes, improve productivity, and ensure consistent results. Support the software release process , ensuring builds ...

Java Engineer

Hiring Organisation
Arrows
Location
London, England, United Kingdom
related frameworks Developing and maintaining RESTful APIs and event-driven systems Writing clean, testable code and following TDD principles with a strong focus on unit testing Working closely with DevOps, Product, and QA teams to deliver high-quality solutions Deploying and supporting services in AWS with tools such … cloud environments, ideally AWS Knowledge of Kubernetes and containerised systems Familiarity with CI/CD pipelines and automation tooling Strong understanding of software testing, TDD, and unit testing Comfortable working within Agile teams Clear communication skills and the ability to collaborate effectively in a hybrid setup ...

C++ Software Developer - Fully REMOTE

Hiring Organisation
DMS Computer Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £75,000 per annum
responsibilities of the position include: Develop standalone applications and plug-ins in C++ 20 Use libraries such as Boost.Asio for asynchronous TCP sockets Write unit tests, end-to-end tests, and stress tests Communicate with the team to identify business requirements Understand business requirements and develop systems/features … knowledge and an active interest in object-oriented principles, practices, and design patterns Willingness to work with and learn modern C++, asynchronous programming, and unit testing Excellent problem-solving and troubleshooting skills Outstanding communication and interpersonal skills, including the ability to describe software designs at any technical knowledge ...

Senior JavaScript Engineer (FTC)

Hiring Organisation
Zebra People | B CorpTM
Location
South London, UK
Employment Type
Full-time
data science ● Develop bug fixes and security patches promptly ● Collaborate and contribute to product feature planning (from a technical perspective) ● Lead implementation of testing infrastructure (Unit testing and Integration Testing) ● Lead and guide the development of our SDLC ● Able to help our customers with technical issues … following: ● 6+ years experience full-stack development ● High proficiency with Typescript, React, Next, Azure, Pulumi and Node ● Experience building secure applications ● Good experience writing unit and integration tests with tools like Mocha and Jest ● Ability to deploy and manage our back-end and front-end ● Experience using Supabase ...

Junior Software Engineer

Hiring Organisation
Morson Talent
Location
South London, UK
Employment Type
Full-time
Junior ServiceNow Developer Client: Major UK Retail Organisation Platform: ServiceNow Focus: CMS, Service Portal, Front-End Development, Quality & Testing Role Overview The Junior ServiceNow Developer will support the design, development, and testing of ServiceNow CMS and Service Portal solutions within a regulated retail environment. The role is delivery … JavaScript, and ServiceNow widgets. Follow ServiceNow best practices, coding standards, and Post Office development guidelines. Support enhancements across related ServiceNow modules as required. Testing & Quality Assurance Perform unit testing for all developed components. Contribute to automated testing where applicable (ATF experience desirable). Participate in peer ...

Java Web Developer

Hiring Organisation
Information Tech Consultants
Location
Greater London, England, United Kingdom
experience in building applications using Java , Spring Boot , and Microservices architecture . The ideal candidate should also have a basic understanding of JUnit for testing and cloud platforms . Key Responsibilities: Design, develop, and maintain backend services using Java and Spring Boot Build and maintain microservices and REST APIs … features aligned with sprint goals and definition of done. Experience integrating with databases , Kafka , or third-party APIs using Spring Boot modules. Write unit and integration tests using JUnit Collaborate with DevOps and QA teams to ensure cloud deployment and testing Debug and resolve technical issues across ...

Senior Java Engineer

Hiring Organisation
Stott & May Professional Search Limited
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
microservices. * Collaborate with cross-functional teams including product, UX, and QA to deliver innovative solutions. * Participate in full software development lifecycle: analysis, design, development, testing, deployment, and support. * Ensure code quality through unit testing, code reviews, and adherence to best practices. * Troubleshoot, debug, and optimize applications ...

Developer

Hiring Organisation
Kennedys Law
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
define and set technical direction to achieve the deliverable. Support the Agile methodology by attending Sprint Planning, demos and retrospectives as required Conduct unit testing and assist with all testing and apply bug fixes where required Implement integrations with external systems using REAT or SOAP ...

Senior Full Stack Engineer (Golang/Typescript/Kubernetes)

Hiring Organisation
Safe Intelligence
Location
City of London, London, United Kingdom
cluster DNS, autoscalers, API/SDK toolsets, and the operator pattern. Experience developing and containerizing microservice applications is a plus. Proficiency in integration and unit testing, with a strong commitment to code quality and maintainability. Strong knowledge of DevOps and Git best practices. Experience automating version control, testing ...

Senior Software Engineer

Hiring Organisation
Retelligence
Location
EC2M, Bishopsgate, Greater London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £95000/annum + Bonus
development practices, including agile methodologies , version control, code reviews, and continuous integration. Understanding of concurrency, asynchrony, and parallelism. Experience with Test Driven Development (TDD), unit testing frameworks, mocking frameworks, and patterns for testability. Proficiency in relational database concepts, Microsoft SQL Server , and SQL . Familiarity with front ...

Senior Back-End Developer – Java

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £800 per day
between front-end and back-end components • Create RESTFul APIs (gRPC) to enable smooth communication between microservices and external systems • Conduct regular code reviews, unit testing, CI and maintain high code quality and reliability • Develop and present high-level design proposals, renderings, and presentations to stakeholders. • Provide input ...

2 x Software Engineers C#

Hiring Organisation
Neulinx
Location
City of London, London, United Kingdom
code Nice to have Experience within financial services or fintech Experience integrating third-party APIs Experience refactoring legacy code and improving performance Exposure to unit testing Current tech stack C# .NET MVC Entity Framework (Code First) MS SQL HTML and CSS JavaScript Git Azure infrastructure Company culture ...

Senior Technology Architect (Liferay DXP / Java)

Hiring Organisation
Tenth Revolution Group
Location
London, UK
Employment Type
Full-time
Delivery Drive requirement analysis, technical feasibility assessments, and high‐level design. Provide clarifications to development teams and support offshore coordination. Oversee development, design, and unit testing activities. Ensure robust coding practices, architectural consistency, and quality standards. Contribute to Agile delivery and continuously uplift engineering capabilities. Work independently while ...

Senior Java Engineer Smart Contract

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
TypeScript/Java to enhance user experience. Create RESTful APIs (gRPC) to facilitate smooth communication between microservices and external systems. Conduct regular code reviews, unit testing, and CI to maintain high standards of code quality. Develop and present high-level design proposals to stakeholders, showcasing your creativity ...

Senior Java Developer

Hiring Organisation
IO Associates
Location
London, United Kingdom
Employment Type
Permanent
work fully remotely on challenging and technically rich work across legacy and modern platforms. You will be responsible for designing, coding, reviewing, and unit testing applications in the Java ecosystem. You will collaborate with developers, testers and DevOps, contribute to automated test reviews, and help maintain and enhance ...

Senior Backend Engineer

Hiring Organisation
Certain Advantage
Location
South East London, London, United Kingdom
Employment Type
Temporary
Good understanding of containers, microservices, and functional design patterns Comfortable working in Agile environments Experience using Terraform for infrastructure as code Strong approach to unit testing (ideally with PyTest ) Nice to have FastAPI React/TypeScript HTML/CSS Why this role? Work on a central platform team ...

Software Engineer

Hiring Organisation
VIA MATCH LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £120,000 per annum
features Turning product ideas into clear delivery plans and shipping them successfully Remaining hands-on where it adds value, contributing to architecture, implementation, testing, deployment, and operations Coaching and developing engineers through regular feedback, clear expectations, and growth opportunities Helping the team stay close to customer problems and real … functional product teams with non-technical stakeholders A strong understanding of software architecture, design patterns, and modern engineering best practice Hands-on experience with testing approaches including TDD and unit testing Comfort using both business and engineering metrics to measure impact Excellent communication skills and the ability ...

Python Developer

Hiring Organisation
Hirexa Solutions UK
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £400 per day
Handling missing values, grouping, merging, pivoting, aggregations, and SQL Software Engineering Best Practices i. Key practices: Version control with Git. Writing modular, reusable code. Unit testing (e.g., with pytest). Code documentation and docstrings. Using linters and formatters Plotly Dash i. Key skills: Customizing with Plotly Graph Objects ...

Backend Software Engineer AI

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £550 per day
Tech Stack & Skills Core skills: Strong Python backend development experience (FastAPI or similar frameworks) Cloud-native deployment experience (preferably Google Cloud and Cloud Run) Unit testing experience (pytest or similar frameworks) Familiarity with agile development and CI/CD processes Strong understanding of Git/GitHub workflows ...

Python Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £600 per day
Tech Stack & Skills Core skills: Strong Python backend development experience (FastAPI or similar frameworks) Cloud-native deployment experience (preferably Google Cloud and Cloud Run) Unit testing experience (pytest or similar frameworks) Familiarity with agile development and CI/CD processes Strong understanding of Git/GitHub workflows ...

Technology Lead - Liferay DXP / Java

Hiring Organisation
Tenth Revolution Group
Location
London, UK
Employment Type
Full-time
Leadership Engage in client communication and manage onshore–offshore coordination. Understand business requirements and provide clarifications to development teams. Own analysis, design, development, and unit testing deliverables. Uphold high standards of code quality, performance, and security. Support agile delivery frameworks and work independently with minimal supervision. Required Skills ...

Senior SalesForce Developer - Service Cloud - Experience Cloud - Apex - LWC - SOQL

Hiring Organisation
Nexere Consulting Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 - 90,000 Annual
solutions. Build and configure functionality across Service Cloud and Marketing Cloud. Write clean Apex code and use declarative tools to meet business needs. Complete unit testing, documentation, and support system testing. Collaboration & Stakeholder Engagement Work with Product Owners and Business Analysts to translate requirements into effective solutions. Participate ...

Java Developer - Equities Algo Trading x2

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£800 - £950 per day
framework components Work closely with quantitative traders to understand and gather requirements Participate in all phases of the development cycle, including requirement gathering, coding, unit testing, patch reviewing, and providing second-level support Qualifications: Skills: Strong command of core Java APIs (Concurrency, collections) Experience with multithreaded systems, Java ...

Senior React Native Engineer - London Hybrid : £100-120k+

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
consuming GraphQL and RESTful services to power rich user experiences. Rapidly shaping UI concepts through prototypes and iterative design. Ensuring reliability through comprehensive unit testing and a strong focus on performance optimisation. Enhancing, maintaining and supporting existing features with robust monitoring and alerting. Collaborating with cross-functional teams ...

Senior Test Engineering Manager Automation-First

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£480 - £500 per day
confidence. Deliverables Define, develop, and write test strategies aligned to business risk and system architecture Own the end-to-end quality engineering approach, from unit testing through E2E and production validation Introduce and scale modern test automation frameworks across teams Embed automated testing into CI/… engineers and software engineers in automation, test design, and quality engineering Establish quality standards, best practices, and governance without slowing teams down Reduce manual testing, flaky automation, and release risk Partner with engineering leadership to raise overall engineering maturity Influence system and API design to improve testability, resilience ...