1 to 25 of 88 Unit Testing Jobs in the City of London

maintain scalable, high-performance software solutions. Develop and manage Infrastructure as Code (IaC) using AWS CDK (Python) to automate deployment and cloud resource management. Drive code quality through automated testing , unit testing, and adherence to clean code principles. Manage and optimize CI/CD pipelines to improve delivery efficiency. Monitor system performance, troubleshoot issues, and ensure optimal … AWS and Infrastructure as Code , particularly AWS CDK in Python . Familiarity with Entity Framework (or similar ORM frameworks) and contract-first system design . Solid understanding of automated testing frameworks and unit testing principles. Agile methodologies and a collaborative, growth-oriented mindset. Excellent problem-solving , analytical, and communication skills. Technical Skills Proficient in back-end development More ❯

maintain scalable, high-performance software solutions. Develop and manage Infrastructure as Code (IaC) using AWS CDK (Python) to automate deployment and cloud resource management. Drive code quality through automated testing , unit testing, and adherence to clean code principles. Manage and optimize CI/CD pipelines to improve delivery efficiency. Monitor system performance, troubleshoot issues, and ensure optimal … AWS and Infrastructure as Code , particularly AWS CDK in Python . Familiarity with Entity Framework (or similar ORM frameworks) and contract-first system design . Solid understanding of automated testing frameworks and unit testing principles. Agile methodologies and a collaborative, growth-oriented mindset. Excellent problem-solving , analytical, and communication skills. Technical Skills Proficient in back-end development More ❯

reports, combining multiple data sources using SQL and Power Query, developing robust data models, creating DAX measures, and delivering visually clear dashboards using standard templates. You will also conduct unit testing, support business testing, and maintain in-line and external documentation to required standards. Key Responsibilities Develop Power BI reports from end-to-end, integrating multiple data … simplicity and efficiency in DAX calculations. Design visuals and layouts following company templates and standards. Write SQL queries against the Enterprise Data Warehouse to extract and transform data. Conduct unit testing, spot anomalies, and support business testing. Produce in-line and external documentation to maintain high-quality deliverables. Technical Skills & Experience Strong SQL skills (joins, CTEs, sub-queries More ❯

reports, combining multiple data sources using SQL and Power Query, developing robust data models, creating DAX measures, and delivering visually clear dashboards using standard templates. You will also conduct unit testing, support business testing, and maintain in-line and external documentation to required standards. Key Responsibilities Develop Power BI reports from end-to-end, integrating multiple data … simplicity and efficiency in DAX calculations. Design visuals and layouts following company templates and standards. Write SQL queries against the Enterprise Data Warehouse to extract and transform data. Conduct unit testing, spot anomalies, and support business testing. Produce in-line and external documentation to maintain high-quality deliverables. Technical Skills & Experience Strong SQL skills (joins, CTEs, sub-queries More ❯

role combines hands-on development , workflow refactoring , and knowledge transfer , helping modernise and stabilise the existing vRA estate. You will partner closely with internal engineering teams through pair programming , unit testing , and workflow documentation , ensuring solutions are secure, repeatable, and fully aligned with operational standards. Key Responsibilities Provide technical remediation, refactoring, and workflow optimisation within the existing VMware … vRA environment. Deliver automation and self-service capabilities for DRaaS failover testing, “morning checks,” and other Day-2 operational tasks. Collaborate in pair-programming sessions to review and maintain high-quality, efficient code. Develop and execute unit tests to ensure code quality, reliability, and compliance with platform standards. Document workflows, configurations, and operational runbooks in Confluence. Produce and … vRA Consultant , DevOps Engineer , or Automation Specialist in enterprise or financial environments. Hands-on expertise with VMware vRealize Automation (vRA) , vRO , and infrastructure automation workflows . Strong understanding of unit testing frameworks (e.g., JUnit, NUnit, pytest) and version control tools ( Git , GitHub , GitLab ). Demonstrable experience in workflow documentation and producing technical runbooks and Confluence pages . Strong More ❯

role combines hands-on development , workflow refactoring , and knowledge transfer , helping modernise and stabilise the existing vRA estate. You will partner closely with internal engineering teams through pair programming , unit testing , and workflow documentation , ensuring solutions are secure, repeatable, and fully aligned with operational standards. Key Responsibilities Provide technical remediation, refactoring, and workflow optimisation within the existing VMware … vRA environment. Deliver automation and self-service capabilities for DRaaS failover testing, “morning checks,” and other Day-2 operational tasks. Collaborate in pair-programming sessions to review and maintain high-quality, efficient code. Develop and execute unit tests to ensure code quality, reliability, and compliance with platform standards. Document workflows, configurations, and operational runbooks in Confluence. Produce and … vRA Consultant , DevOps Engineer , or Automation Specialist in enterprise or financial environments. Hands-on expertise with VMware vRealize Automation (vRA) , vRO , and infrastructure automation workflows . Strong understanding of unit testing frameworks (e.g., JUnit, NUnit, pytest) and version control tools ( Git , GitHub , GitLab ). Demonstrable experience in workflow documentation and producing technical runbooks and Confluence pages . Strong More ❯

services into the platform ● Cooperate with project and product management to scope, estimate, and plan new efforts ● Follow best practices using Apple Development Guidelines ● Drive code quality, code coverage, unit testing, best practices and Continuous integration/Continuous Delivery Pipeline ● Good interpersonal and communication skills ● Constantly research and adopt new technologies/best practices ● Strong and innovative approach … English ● Hands on experience with Reactive frameworks such RxSwift or custom framework ● Deep understanding of Fast lane or any similar CI/CD scripting frameworks ● Hands on experience on unit testing framework ● Must have experience in Performance Tuning the app ● Must have experience using XCode Instruments and ability to diagnose any memory leaks and crashes ● Implementation understanding of More ❯

services into the platform ● Cooperate with project and product management to scope, estimate, and plan new efforts ● Follow best practices using Apple Development Guidelines ● Drive code quality, code coverage, unit testing, best practices and Continuous integration/Continuous Delivery Pipeline ● Good interpersonal and communication skills ● Constantly research and adopt new technologies/best practices ● Strong and innovative approach … English ● Hands on experience with Reactive frameworks such RxSwift or custom framework ● Deep understanding of Fast lane or any similar CI/CD scripting frameworks ● Hands on experience on unit testing framework ● Must have experience in Performance Tuning the app ● Must have experience using XCode Instruments and ability to diagnose any memory leaks and crashes ● Implementation understanding of More ❯

order processing systems. Knowledge of UX/UI principles and best practices. Knowledge of common e-commerce payment gateways (e.g., PayPal, Stripe) and experience overseeing their integration. Knowledge of testing methodologies, including unit testing, integration testing, and user acceptance testing (UAT). Proficiency in Agile project management practices, including Scrum and Kanban, to manage development More ❯

multithreading , concurrency models , and Executor Services to optimize system performance and throughput. Write clean, efficient, and maintainable code using functional programming paradigms in Java. Follow and promote SOLID principles , unit testing , and other modern software development best practices. Collaborate closely with quants, traders, and other developers in a fast-paced environment. Maintain a high level of code quality … Akka, Vert.x, Flink). Solid understanding of multithreading and Executor Services in Java. Strong background in functional programming and Java 8+ features. Adherence to robust engineering practices: SOLID principles , unit testing , TDD is a plus. Excellent problem-solving skills with a mission-driven, positive attitude . Strong communication skills and ability to work effectively with cross-functional teams. More ❯

multithreading , concurrency models , and Executor Services to optimize system performance and throughput. Write clean, efficient, and maintainable code using functional programming paradigms in Java. Follow and promote SOLID principles , unit testing , and other modern software development best practices. Collaborate closely with quants, traders, and other developers in a fast-paced environment. Maintain a high level of code quality … Akka, Vert.x, Flink). Solid understanding of multithreading and Executor Services in Java. Strong background in functional programming and Java 8+ features. Adherence to robust engineering practices: SOLID principles , unit testing , TDD is a plus. Excellent problem-solving skills with a mission-driven, positive attitude . Strong communication skills and ability to work effectively with cross-functional teams. More ❯

Requirements Software Development & Principles Programming Languages: Proficiency in one or more of: Java, Spring Boot, Python, JavaScript, TypeScript, ReactJS SOLID Principles: Familiarity with object-oriented and clean coding practices Testing & BDD Unit Testing Frameworks: Experience with Cypress, Cucumber, Behave, Selenium, or similar tools Domain-Specific Languages: Knowledge of BDD approaches (e.g., Cucumber, Gherkin) for test automation Containerisation … CD Security Integration: Familiarity with embedding security checks at every phase of the SDLC (e.g., SAST, DAST) Automation Pipelines: Experience with Continuous Integration (CI), Continuous Delivery (CD), and continuous testing tools (e.g., Jenkins, GitHub Actions) Agile & Mentorship Agile Delivery: Background in Scrum or Kanban, assisting Product Owners and shaping team objectives Mentoring: Proven track record of helping less experienced More ❯

Requirements Software Development & Principles Programming Languages: Proficiency in one or more of: Java, Spring Boot, Python, JavaScript, TypeScript, ReactJS SOLID Principles: Familiarity with object-oriented and clean coding practices Testing & BDD Unit Testing Frameworks: Experience with Cypress, Cucumber, Behave, Selenium, or similar tools Domain-Specific Languages: Knowledge of BDD approaches (e.g., Cucumber, Gherkin) for test automation Containerisation … CD Security Integration: Familiarity with embedding security checks at every phase of the SDLC (e.g., SAST, DAST) Automation Pipelines: Experience with Continuous Integration (CI), Continuous Delivery (CD), and continuous testing tools (e.g., Jenkins, GitHub Actions) Agile & Mentorship Agile Delivery: Background in Scrum or Kanban, assisting Product Owners and shaping team objectives Mentoring: Proven track record of helping less experienced More ❯

practices. Apply sound technical judgment to deliver high-quality software within the bank’s governance and infrastructure constraints . Contribute across all phases of development: analysis, architecture, design, coding, unit testing, documentation, automated testing, and CI/CD delivery . Work effectively within Agile frameworks (Scrum or Kanban), actively participating in story writing, sprint planning, demos and More ❯

practices. Apply sound technical judgment to deliver high-quality software within the bank’s governance and infrastructure constraints . Contribute across all phases of development: analysis, architecture, design, coding, unit testing, documentation, automated testing, and CI/CD delivery . Work effectively within Agile frameworks (Scrum or Kanban), actively participating in story writing, sprint planning, demos and More ❯

high-quality Java applications and 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 for performance and scalability. Stay up More ❯

high-quality Java applications and 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 for performance and scalability. Stay up More ❯

principles , such as load balancers, 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, and releases, preferably with More ❯

principles , such as load balancers, 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, and releases, preferably with More ❯

patterns. Experience with modern software 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-end technologies such as HTML , CSS More ❯

such as Git. Experience with the Web Content Accessibility Guidelines. Knowledge of responsive web design principles and CSS frameworks. Understanding of RESTful APIs and asynchronous data retrieval. Experience with unit testing. Strong problem-solving and debugging skills. Excellent teamwork and communication skills. Attention to detail and an eye for design and user experience. A portfolio of past projects showcasing More ❯

experience Architected, designed, and led development of a microservices solution using Spring Boot Experience of Docker and AWS (ideally EventBridge & SQS) Experience of implementing RESTful web services Experience of unit testing using Junit, mocking frameworks and integration testing Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway Experience of deploying and using More ❯

experience Architected, designed, and led development of a microservices solution using Spring Boot Experience of Docker and AWS (ideally EventBridge & SQS) Experience of implementing RESTful web services Experience of unit testing using Junit, mocking frameworks and integration testing Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway Experience of deploying and using More ❯

low-level designs and develop custom plug-ins, JavaScript, Power Apps, Power Automate, and other customisations. Provide technical guidance and support to business users. Take ownership of assigned features, unit testing, and deployments to Test/Production environments. Maintain solutions that comply with security and regulatory standards. Identify opportunities to simplify processes, reduce complexity, and improve efficiency. Investigate More ❯

low-level designs and develop custom plug-ins, JavaScript, Power Apps, Power Automate, and other customisations. Provide technical guidance and support to business users. Take ownership of assigned features, unit testing, and deployments to Test/Production environments. Maintain solutions that comply with security and regulatory standards. Identify opportunities to simplify processes, reduce complexity, and improve efficiency. Investigate More ❯