1 to 25 of 36 Unit Testing Jobs in London

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 ...

Senior Backend Developer

Hiring Organisation
Skilliantech Ltd
Location
London, United Kingdom
Employment Type
Contract
DevOps, and product teams to deliver end-to-end solutions Participate in design discussions, code reviews, and technical decision-making Ensure code quality through unit testing, integration testing, and best practices Troubleshoot and resolve production issues and performance bottlenecks Contribute to continuous improvement of engineering standards ...

Principal Consultant – Service Now Tech Lead

Hiring Organisation
STACKSTUDIO DIGITAL LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
enhancements and bug fixes to full application suite deployment. Carry out agile sprint-defined development tasks to support release cycles, including execution of development, unit testing, functional testing, and overall peer review of team member work. Reviews design and code per sprint to ensure quality. Creation … ServiceNow Developers Stay current with new and updated capabilities of the ServiceNow Platform Coordinate upgrades to Production and Sub-Production instances Coordinate sub-production testing, evaluation, and regression remediation Participate in blueprinting workshops and contribute with documentation and effort estimation. Support COE in continuous development of training paths ...

ServiceNow Developer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £500 to £550 per day
Actions Forms and Service Catalog Develop inbound and outbound integrations with third-party systems Support data migration, transformation, and validation activities Perform unit testing, system testing, and support UAT Troubleshoot and resolve platform and integration issues Maintain documentation for technical designs and configurations Collaborate with architects, business ...

MERN Stack SME

Hiring Organisation
HCLTech
Location
London Area, United Kingdom
with RESTful APIs, GraphQL (preferred), and microservices architecture. Solid understanding of HTML5, CSS3, JavaScript (ES6+). Strong knowledge of Git, CI/CD pipelines, unit testing frameworks (Jest, Mocha, etc.). Experience deploying applications on Azure , AWS , or GCP . Familiarity with containerization tools (Docker, Kubernetes). Preferred ...

Software Engineer .NET

Hiring Organisation
London and Quadrant Housing Trust
Location
London, United Kingdom
Accounts, App insights and Log analytics Relational Databases (e.g. MS SQL, Azure SQL, TSQL, Stored Procedures, CTE), with query optimisation a bonus Knowledge of unit Testing, TDD practices using Playwright, xUnit, NUnit etc. Working knowledge of DevOps and CI/CD principles and practices, ideally based on AzureDevOps ...

Murex Software Engineer

Hiring Organisation
Cititec
Location
London Area, United Kingdom
Develop and maintain Python or Shell scripts to support data transformation and connectivity. Configure and develop Murex workflows and Datamart components where required. Perform unit testing and prepare releases for RAT, CDR, and AT testing cycles. Collaborate with Business Analysts, Architects, and other IT teams to ensure … execute relevant interface tests. Maintain code and configuration using Git and established branching strategies. Contribute to DevOps practices, including CI/CD, automated testing, and continuous delivery. Produce high-quality technical documentation, design documents, and datamaps. Share knowledge and provide guidance to other developers within the team. Required Skills ...

SAP Developer

Hiring Organisation
Diageo
Location
London Area, United Kingdom
implementation of new plants and trading structures associated with a Diageo production managed by a third party. The role ensures seamless system design, integration, testing, and cutover execution across multiple SAP modules and connected systems. Key Responsibilities Technical Design & Configuration Design, build, and configure SAP solutions to support … onboarding of third‐party manufacturing related to Santa Vittoria. Collaborate with functional teams and process owners to translate business requirements into robust SAP solutions. Testing Ownership Define, prepare, and execute unit testing and regression testing. Support integration testing across SAP and connected platforms. Document test results ...

Full Stack Developer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £72000/annum
services utilizing the Java Spring Boot ecosystem. Data Management: Design and maintenance of SQL/NoSQL databases and ORM integration. Quality Control: Execution of unit testing, code reviews, and performance optimization to ensure high standards. Essential Skills Core Languages: Advanced proficiency in Java, JavaScript, HTML, and CSS. Back ...

Full Stack Developer

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £72,000 per annum
services utilizing the Java Spring Boot ecosystem. Data Management: Design and maintenance of SQL/NoSQL databases and ORM integration. Quality Control: Execution of unit testing, code reviews, and performance optimization to ensure high standards. Essential Skills Core Languages: Advanced proficiency in Java, JavaScript, HTML, and CSS. Back ...

Software Engineer

Hiring Organisation
Gold Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
serverless architectures. Advanced understanding the development challenges moving on-prem workload to cloud. Experience of developing on Linux. Advanced understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter). Expert with Git version control. Proficient in Agile Development using SCRUM. Advanced knowledge of Oracle/ ...

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 ...

Test Engineer

Hiring Organisation
Hays
Location
London Area, United Kingdom
Develop data-driven, keyword-driven, and hybrid automation frameworks. Build and maintain test harnesses and libraries to support automation. Implement parallel execution and distributed testing to reduce execution time. Work with BDD frameworks such as SpecFlow. Automate API testing using tools such as RestSharp and integrate … automation. Create detailed automation test reports and dashboards. Implement mocking and stubbing techniques to support testing efficiency. Write complex and optimized XPath locators. Apply and maintain Page Object Model (POM) design patterns. Execute automated tests and analyse results to identify defects and inconsistencies. Log and track defects using tools ...

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 ...

Solution Engineer

Hiring Organisation
Tenth Revolution Group
Location
London Area, United Kingdom
work will have impact and visibility, this could be an excellent fit. You Will Work With Lead low‐level solution design, development, configuration, and unit testing Build and integrate solutions across a range of enterprise platforms Work closely with Technical Leads, Project Managers, stakeholders and fellow engineers Contribute … both front‐end and back‐end components, as well as integration layers Deliver high‐quality output through solid testing, automation, and adherence to standards Support deployments and post‐implementation checks within structured change processes Keep up with new tech and help shape the team’s engineering approach Step ...

SC Clearance Required - Salesforce Developer

Hiring Organisation
Teksystems
Location
London, United Kingdom
Employment Type
Contract
test, and deploy Apex code (classes, triggers, and components) to extend Salesforce functionality. · Participate in the full software development lifecycle, including requirements gathering, development, testing, deployment, and maintenance. · Implement and maintain robust DevOps practices, including source code management, branching strategies, pull requests, and commits. · Utilize DevOps tools such … documentation, including design specifications, code comments, and user guides. · Provide technical support and troubleshooting for Salesforce applications. · Adhere to best practices for Apex, Flows, Unit Testing and participate in peer reviews to ensure code quality and system integrity. Location London, UK Trading as TEKsystems. Allegis Group Limited, Maxis ...

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 ...

Swaps Developer Contract

Hiring Organisation
Jefferies
Location
London Area, United Kingdom
specific projects or issues from start to finish. Documenting. Working with global colleagues, stakeholders and management to ensure appropriate prioritisation. Write high quality code, unit testing, working with QA, and overseeing the production release cycle. Trade support queries (2nd line) Person Specification The following skills and experience ...

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 ...

Machine Learning Engineer

Hiring Organisation
The Change Partners - Global talent specialists for a connected world
Location
London Area, United Kingdom
Production Experience: You’ve built and shipped scalable systems before (ideally with ML/AI components) DevOps Mindset: You’re comfortable with version control, unit testing, and automated deployment pipelines (GitHub Actions). You built reusable frameworks and modular code that lasts. Bonus Points: If you’ve worked … with AWS/GCP, understand the nuances of A/B testing, or have a passion for open-source development, we definitely want to talk. Please note this role doesn’t offer sponsorship. Please apply to learn more about the role. ...

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 ...

Lead PySpark Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£281 - £292/day 388
Performance Tuning: Optimise Spark execution (partitioning, shuffling, caching) to ensure cost-efficient processing of massive financial datasets. Quality & Governance: Implement rigorous CI/CD, unit testing, and data reconciliation frameworks to ensure "penny-perfect" accuracy. Technical Stack Engine: PySpark (Expert), Python (Clean Code/SOLID principles). ...

Lead PySpark Engineer

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£281 - £292 per day
Performance Tuning: Optimise Spark execution (partitioning, shuffling, caching) to ensure cost-efficient processing of massive financial datasets. Quality & Governance: Implement rigorous CI/CD, unit testing, and data reconciliation frameworks to ensure "penny-perfect" accuracy. Technical Stack Engine: PySpark (Expert), Python (Clean Code/SOLID principles). ...