1 to 25 of 35 Unit Testing Jobs in London

Graduate Software Test and Development Engineer

Hiring Organisation
Insignis
Location
Greenwich, London, United Kingdom
Employment Type
Temporary
Salary
£25000 - £34000/annum
closely with software developers, test engineers, and the wider product development team to: Develop and test software used to control power systems Carry out unit testing, integration testing, and system-level testing Help verify that software operates within defined safety and design limits Produce clear test … evidence and compliance reports Identify bugs, unexpected behaviour, and opportunities for improvement This is a hands-on role that blends software development, testing, and real-world system understanding. What You'll Be Learning & Doing With support from experienced engineers, you will: Plan and execute test cases alongside a Software ...

Senior Quantitative Developer

Hiring Organisation
Centrica
Location
London, United Kingdom
Employment Type
Permanent
quality increments to the team's model library - working both individually and collaboratively. Providing leadership in areas such as object modelling & interface design, automated testing & refactoring and performance optimisation. Provide support to Trading & Origination on model usage and behaviour. Leverage the teams cross-asset expertise to connect business locations … mathematics or other quantitative subject. Solid experience of code development in Python, including: Experience developing in an Agile environment Use of math/stats & testing libraries, as well as modern build tools. Ability to refactor code and work effectively with legacy systems. Knowledge of Object Orientation, Software Architecture ...

Senior Quantitative Developer

Hiring Organisation
Centrica - CHP
Location
Hayes, London, United Kingdom
Employment Type
Permanent
quality increments to the team's model library - working both individually and collaboratively. Providing leadership in areas such as object modelling & interface design, automated testing & refactoring and performance optimisation. Provide support to Trading & Origination on model usage and behaviour. Leverage the teams cross-asset expertise to connect business locations … mathematics or other quantitative subject. Solid experience of code development in Python, including: Experience developing in an Agile environment Use of math/stats & testing libraries, as well as modern build tools. Ability to refactor code and work effectively with legacy systems. Knowledge of Object Orientation, Software Architecture ...

Python Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £700/day
5+ years of hands-on development experience (not scripting/automation roles) Strong knowledge of boto3 API Experience building RESTful applications Strong understanding of testing frameworks, unit testing, and regression testing methodologies AWS Expertise Deep understanding of AWS networking and IAM Strong knowledge of IAM concepts ...

Senior Automation Test Engineer (SC Cleared)

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Temporary
Salary
£450 - £475.00 per day + Remote /Inside IR35
seeking an experienced SC Cleared Senior Automation Test Engineer with proven UK Central Government testing experience to support secure, enterprise-grade digital services. You will work within Agile, multi-disciplinary teams delivering cloud-based systems aligned to Government governance, ISO 27001, and Security Policy Framework standards Essential Requirements Active … Clearance (mandatory) Proven Central Government testing experience Experience working within secure, regulated environments Strong experience delivering automation within large-scale programmes Technical Skills Automation testing: C#, Selenium, MSTest, BDD, RestSharp, JavaScript UI and API test automation Non-functional testing: JMeter, Azure Load Testing Microsoft Azure cloud ...

Workday Functional Analyst (Absence & Time Tracking)

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £500 to £600 per day
requirements into system configurations. Provide ongoing support to end-users, troubleshoot issues, and deliver training and user support materials as needed. Conduct/support testing and validation of system changes, including unit testing, integration testing, and user acceptance testing. ...

Software Engineer (III)

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£50 - £51 per hour
recommend a solution that includes both the short-term and long-term needs. Responsibilities include: - Write product or system development code without supervision, conduct testing beyond unit testing (e.g. integration, performance, stress, security, load, fuzz), design code to allow for easy testing and write test case … tech debt with high carrying costs. Implement or guide remedies to improve long-term maintainability, modifiability, etc. Managers also oversee their team's coding, testing, and reviewing. - Take ownership of rolling out a project to completion, contributing to qualification, end-user documentation, production deployment/monitoring, process automation ...

.Net Developer

Hiring Organisation
Wave Group
Location
City of London, London, United Kingdom
building and consuming REST APIs Solid understanding of object-oriented design and software engineering principles Experience with SQL Server and relational databases Familiarity with unit testing frameworks (e.g. xUnit, NUnit, MSTest) Experience working in Agile delivery environments Comfortable working as a contractor in a delivery-focused role Nice ...

Full Stack Engineer (12 month contract)

Hiring Organisation
SoTalent
Location
Greater London, England, United Kingdom
resilience Experience optimising web applications in production environments Familiarity with CI/CD pipelines (e.g. CircleCI), containerisation (Docker/Podman), and automation Experience with testing frameworks such as Cypress or Playwright, including unit-testing practices Hands-on exposure to cloud platforms (Google Cloud or AWS), e.g. Cloud ...

Contract Azure Data Engineer - £600/pd Outside IR35

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £600 per day
remove technical blockers, and lead third-party developers when required. Contribute to DevOps practices, CI/CD pipelines, test automation, and continuous improvement. Support testing, service transition, and knowledge transfer. Collaborate across the business, ensuring solutions meet quality and performance expectations. Required Skills Strong Azure expertise (architecture, services, security … Azure DevOps/GitHub). Excellent communication with technical and non-technical stakeholders. Desired Skills Power BI/Tableau Stakeholder management Spark/Hadoop Unit testing frameworks Azure advanced analytics Data warehousing experience Azure Data Engineer certification Agile/Scrum/Kanban exposure This is a London based ...

Senior Workday Finance Consultant - up to £95,000 - Hybrid

Hiring Organisation
Involved Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £95,000 per annum
external systems Develop and test Workday reports, dashboards and analytics for Finance leadership Configure business processes including approvals, workflows and control frameworks Support testing cycles including unit testing, UAT and cutover planning Ensure compliance alignment with SOX, GAAP and IFRS requirements Support post go-live stabilisation ...

C# .NET Developer

Hiring Organisation
Career Concept
Location
EC2A, Finsbury Square, Greater London, United Kingdom
Employment Type
Permanent
Salary
£40000 - £60000/annum
GCP. Bonus if you have worked with Serverless Experience working in a modern Software Engineering team with CI/CD process, Unit testing, Agile, use of frameworks, awareness of technical debt and 'of course' use of AI Equipped to work within small team, taking project ownership, pragmatic mindset ...

Senior ML Engineer

Hiring Organisation
Anson Mccade
Location
London, United Kingdom
Employment Type
Permanent
into a stable "product." Technical Profile Software Excellence: Mastery of Python with a heavy focus on software engineering best practices (Design Patterns, Clean Code, Unit Testing). Familiarity with C++ or Go is a significant plus. Tooling & Orchestration: Deep experience with containerization (Docker, Kubernetes) and orchestration tools like ...

Junior JavaScript developer - UK BASED ONLY

Hiring Organisation
Opus Recruitment Solutions
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£300/day
2.5 years) Inside IR35 Remote £300 per day Around 2 years experience required Tech stack; VueJs - (React developers considered) JavaScript Test Driven Development - (Unit Testing and Content Verification testing experience beneficial) Accessibility - WCAG Knowledge would be very beneficial but any experience developing Accessible frontends would ...

Informatica Data Engineer - SC Cleared - Urgent!

Hiring Organisation
Cloud Consulting
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 500 Daily
Microsoft Fabric (eg Data Factory, Synapse, OneLake) Exposure to financial services/FinTech environments Familiarity with Azure DevOps and/or GitHub Experience with testing practices for data pipelines (unit testing, QA) Broader Azure data services (Azure SQL, Managed Instance, Data Lake) If you are interested, please ...

Frontend Developer

Hiring Organisation
Tate Recruitment
Location
City of London, London, United Kingdom
Working across the full software development lifecycle in an Agile environment • Collaborating with product and technical teams to shape and refine requirements • Contributing to testing, documentation and ongoing improvements across the team What we’re looking for • Expert in modern front-end tech - Vue (mandatory), React/Angular (nice … will be a small part of the role but necessary • Experience working with component based development and design systems • Strong understanding of REST APIs, unit testing and Git • Experience with SQL, EF Core or Dapper • Experience working with UX and design tools such as Figma or Adobe ...

Senior Unity Developer

Hiring Organisation
Fusebox Games
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
usage and content delivery. Experience with modern Unity features such as URP, UI Toolkit, and ShaderGraph. Familiarity with CI/CD pipelines and automated testing frameworks in Unity. Experience with backend services (Google Cloud, AWS) and mobile SDKs (AppsFlyer, OneSignal). Experience with Yarn Spinner or similar narrative tools. … Experience with unit testing and test-driven development (TDD). Experience with Dependency Injection frameworks (e.g., Zenject/Extenject, VContainer). A passion for interactive fiction and storytelling. ...

Senior Back End Developer

Hiring Organisation
Glocap Tech
Location
Greater London, England, United Kingdom
infrastructure across AWS services including ECS/Fargate, RDS/PostgreSQL, Lambda, CloudFront, IAM, and KMS-managed encryption. ● Establish engineering excellence through clean architecture, unit testing, CI/CD standards, observability practices, and performance monitoring. ● Participate in architecture discussions and contribute directly to the technical roadmap … deploying cloud-native applications. ● Experience with containerization (Docker) and modern deployment workflows. ● Systems-level thinking with an emphasis on clean abstractions, testing, and architectural trade-offs. ● Ownership mindset with comfort operating in ambiguity and taking features from concept through to production. ● 5+ years environment in data-heavy environment ...

Artificial Intelligence Engineer

Hiring Organisation
Deloitte
Location
Greater London, England, United Kingdom
team to build and deliver high-impact solutions. Essential Skills and Experience Expert-level Python programming skills; strong advocate for PEP8 compliance, clean code, unit testing, and version control (Git, Unix, pytest). Experience retrieving data from structured, unstructured and web sources (Selenium/PlayWright, Pandas ...

Senior Salesforce Developer - Service Could - Experience Cloud - Marketing Cloud - Apex - LWC

Hiring Organisation
Nexere Consulting Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 - 95,000 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 ...

PEGA Developer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £450 to £500 per day
analytics, reporting, and operational decision-making. Design and develop user interfaces using Pega UI frameworks, ensuring usability, consistency, and alignment with enterprise standards. Perform unit testing, debugging, and performance tuning, proactively identifying and resolving defects and bottlenecks. Support application releases and deployments, working closely with DevOps ...

Network Automation Engineers

Hiring Organisation
Tech Mahindra
Location
London, United Kingdom
Employment Type
Permanent
Salary
£60000 - £75000/annum
lifecycle Apache Airflow Hasi Corp Vault Openshift Automation development Python Fast API Rest API Netconf Yang modelling XML/Json Jinja/TextFSM Pytest Unit testing Database MongoDB DevOps Docker Git CI/CD Kubernetes Networking Ciena 517x/8180/8114 Nokia BNG/OLT Infinera ...

Senior Software Engineer - Ruby

Hiring Organisation
Spectrum IT Recruitment
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £95000/annum Benefits + remote working
similar stack Excellent problem-solving skills and the ability to work in a collaborative product led team Advocate for Software engineering best practice - Unit testing, CI/CD, Pair Programming, etc Interested in working on complex problems with senior engineers The ability to work to set timescales ...

Dotnet Developer

Hiring Organisation
Harrington Starr
Location
City of London, London, United Kingdom
apps). Proficient in SQL Server (T-SQL) and Oracle (PL/SQL) . Knowledge of application deployment and environment maintenance . Experience in unit testing, QA , and documentation . Ability to troubleshoot across servers, databases, and distributed environments. Desirable Financial services or enterprise BI experience. Familiarity with ...

Senior React Native Engineer - London Hybrid : £100k

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 ...