51 to 75 of 91 Performance Testing Jobs in London

Lead QA Automation Engineer

Location
Greater London, England, United Kingdom
Automation Lead to join their team. You'll take ownership of QA automation across large-scale websites and digital content, helping reduce manual testing and improve quality across high-profile releases and campaigns. We're keen to speak with candidates who have: Strong Playwright, Cypress or Selenium experience Advanced … Adobe Experience Manager (AEM) experience Experience integrating automated testing into CI/CD pipelines Experience testing large-scale consumer websites or digital content platforms Good knowledge of accessibility and performance testing This is a fully remote contract, although you'll need to collect your laptop from ...

Senior Lead Full-Stack Software Engineer

Location
Greater London, England, United Kingdom
launch of scalable web applications with a focus on quality and user experience. Architect scalable and maintainable front-end solutions. Conduct load and performance testing to ensure optimal responsiveness and stability. Ensure the technical feasibility of UI/UX designs. Build and maintain ETL/ELT pipelines ...

Environments Lead

Location
City Of London, England, United Kingdom
technical point of contact for environment-related issues and escalations. Collaborate with Cloud and DevOps engineers to implement scalable and automated environment solutions. Support performance testing and troubleshoot environment bottlenecks. Ensure environment integrity through version control, patching, and rollback strategies. Assist in release planning by validating environment readiness … dependencies. Maintain environment monitoring dashboards and logs. Mentor junior engineers and contribute to environment-related best practices. Executes DR testing, validating system recovery, integrations, and service resilience post-fail over to ensure continuity and adherence to high-availability and recovery objectives. implements monitoring and observability frameworks, using CNCF ...

Quality Engineer

Location
Greater London, England, United Kingdom
start on Platform, bringing structure to what exists and establishing standards for what gets added next, then extend automation into Transform/customer‐configuration testing over time – an area with no automated coverage today, only manual execution by our existing testers, in work that's highly specific to each … clear, documented relationship between platform‐level automated tests and FDE "golden tests," removing current ambiguity about what covers what; also align with the performance testing work already underway so load/performance results sit in the same reporting picture rather than a separate silo Mentorship: Support ...

Senior API & Kafka Test Automation Engineer (Hybrid)

Location
Greater London, England, United Kingdom
Capgemini is seeking a Senior Test Automation Engineer in London to design, build and maintain automated testing solutions for APIs and Kafka-powered event-driven platforms. Join an Agile delivery team to drive shift-left quality, implement robust testing frameworks and integrate CI/CD with GitLab. … role emphasizes API contract validation, performance testing and end-to-end scenario validation in a hybrid work environment. #J-18808-Ljbffr ...

Content QA Automation Lead

Hiring Organisation
CBSbutler Holdings Limited
Location
London, United Kingdom
Employment Type
Contract
platforms, supporting digital experiences and campaigns seen by millions of players worldwide. This is a hands-on automation role focused on reducing repetitive manual testing and increasing the speed, coverage and reliability of QA across large-scale digital content and customer journeys. You'll be responsible for: Defining … maintaining automated regression, functional and cross-browser test suites Automating monitoring of live content and customer journeys Evaluating and implementing QA and AI-assisted testing tools Integrating automation into CI/CD and CMS release processes Working closely with Engineering, Development and Content QA teams Enabling the wider ...

Senior Lead Machine Learning Engineer

Location
Greater London, England, United Kingdom
Model Registry, Endpoints, Monitoring, and deployment workflows.* CI/CD, infrastructure as code, model lifecycle management, and automated retraining.* Observability, drift detection, experimentation, and performance engineering.* Multi-account AWS deployments and cross-account ML platforms.Model Development, Governance & Explainability* Deep experience applying a wide range of machine learning techniques … auditability, SHAP, Model Cards, and model documentation practices.* Experience establishing governance frameworks that ensure models are explainable, reproducible, and compliant with enterprise standards.Testing, Validation & Performance Engineering* Lead validation strategies using golden datasets, behavioural tests, and benchmark suites.* Architect performance testing for latency‐sensitive inference paths and model ...

DevOps Engineer

Hiring Organisation
Brio Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day
manage the Dev, QA, Demo, Training and Production environments, including container configuration, environment variables and secrets. Build dedicated test environments for the testing team and maintain a performance testing environment. Restructure the Demo environment so testers can access the database. Maintain and test the disaster recovery model … including failover, static fallback pages and Front Door routing during outages. Deliver outstanding platform hardening and act on penetration testing findings. Manage IAM, deployment permissions, DNS records and user offboarding within the subscription. Produce clear infrastructure documentation in line with governance controls. Essential Experience Strong hands-on Microsoft Azure ...

Software Engineer III - CDAO GRAPH UK

Location
Greater London, England, United Kingdom
needed. Data Architecture skills and experience building enterprise scale data solutions. Experience building performant, decoupled, testable, maintainable code and fine tuning application response/performance testing using industry-wide technology trends and best practices Experience working with Maven, Jenkins build pipelines, Sonar and Unit testing frameworks including ...

Engineering & Delivery Lead - Risk & Compliance

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
scalable capabilities with clear ownership across architecture, backlog, release and run Champion modern software engineering practices including Agile delivery, DevSecOps, trunk-based development, automated testing and CI/CD Embed approved AI-enabled engineering practices across design, development, testing, security, documentation and operations with governance and traceability Strengthen … highly regulated environment with strong security and control frameworks Demonstrate deep hands-on engineering capability in Java or Python including building high-performance services and working with concurrency and distributed patterns Apply substantial experience with event-driven and distributed systems including low-latency architectures and synchronous and asynchronous execution ...

Engineering & Delivery Lead - Risk & Compliance

Hiring Organisation
Hackajob Ltd
Location
Westminster, Greater London, UK
scalable capabilities with clear ownership across architecture, backlog, release and run Champion modern software engineering practices including Agile delivery, DevSecOps, trunk-based development, automated testing and CI/CD Embed approved AI-enabled engineering practices across design, development, testing, security, documentation and operations with governance and traceability Strengthen … highly regulated environment with strong security and control frameworks Demonstrate deep hands-on engineering capability in Java or Python including building high-performance services and working with concurrency and distributed patterns Apply substantial experience with event-driven and distributed systems including low-latency architectures and synchronous and asynchronous execution ...

Data Engineer – SC Clearance

Location
Greater London, England, United Kingdom
database development Ability to develop and maintain Talend jobs, Oracle DDL, SQL scripts, and GitLab pipeline enhancements Experience troubleshooting and resolving defects throughout the testing lifecycle Good understanding of component, integration, automation, and performance testing Experience conducting peer code reviews and mentoring junior engineers within Agile environments ...

Data Engineer III - Python, Databricks - Senior Associate

Location
Greater London, England, United Kingdom
managing applications at scale. Good understanding and working knowledge of software development lifecycle tools used for configuration management, CI/CD pipelines, unit testing, regression testing, and performance testing. Preferred qualifications, capabilities, and skills Familiarity with the Standardized data layer practices (Medallion architecture) Exposure to Aurora Postgres ...

Storage Engineer

Location
London, United Kingdom
issues. Support the onboarding of storage services into production environments. Troubleshoot connectivity, mounting and storage availability issues across environments. Carry out storage validation and performance testing to establish baseline metrics. Verify that storage flows and mounts operate correctly before and after production deployment. Identify and resolve issues across … provisioning and deployment processes. Good understanding of storage provisioning, mounts, connectivity and troubleshooting. Experience with API integrations and automated/self-service workflows. Experience testing storage environments and validating performance against baseline metrics. Comfortable working with vendors and internal infrastructure/engineering teams. Strong troubleshooting and problem-solving ...

SC Cleared Senior Test Automation Engineer

Location
Greater London, England, United Kingdom
Engineer to join a Digital Assurance & Productivity team supporting a leading UK banking organisation. The role will focus on designing, developing and maintaining automated testing solutions and frameworks, helping to improve test coverage, quality and delivery across a range of technology platforms. You’ll work closely with developers, analysts … business stakeholders within an Agile environment, integrating automated testing into CI/CD pipelines and contributing to the ongoing improvement of the organisation’s automation strategy and tooling. Key Responsibilities Design, develop and maintain automated test scripts and frameworks. Integrate automated testing into CI/CD pipelines. Work ...

Senior Network Test Engineer - Cloud & 5G Validation

Location
Greater London, England, United Kingdom
Inabia Software & Consulting Inc. is seeking a Senior Network Test Engineer in the United Kingdom to lead end-to-end verification, performance testing, and validation across cellular, WiFi, broadband, and cloud networks. You will configure test environments, perform comprehensive testing, analyze traffic, and produce detailed reports. Strong ...

Data Engineer III - Python, Databricks - Senior Associate

Location
Greater London, England, United Kingdom
managing applications at scale. Good understanding and working knowledge of software development lifecycle tools used for configuration management, CI/CD pipelines, unit testing, regression testing, and performance testing. Preferred qualifications, capabilities, and skills Familiarity with the Standardized data layer practices (Medallion architecture) Exposure to Aurora Postgres ...

IT Developer

Location
City Of London, England, United Kingdom
Development team's systems. Key Capabilities and Knowledge: At least three years' server-side development experience using core Java. Experience of high-performance, distributed and multi-threaded systems. Understanding of interfaces between, and separation of, interconnected modules and systems. Experience of front-to-back involvement in software development … problems into manageable phases. Commitment to delivering high-quality code that minimises long-term support and maintenance requirements. Experience of automated, unit and functional testing, with a pragmatic approach to the appropriate level of testing. Working knowledge of Linux. Ideally a 2:1 degree or higher in a technical ...

Senior Network Test Engineer – Cloud & Automation Lead

Location
Greater London, England, United Kingdom
Inabia seeks a Senior Network Test Engineer in the United Kingdom to lead end-to-end network verification, performance testing, and validation across cellular, WiFi, broadband, and cloud networks. You will configure and manage test environments, run throughput and latency tests, and produce comprehensive reports for cross-functional ...

iOS Developer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £420 per day + Inside IR35
best practices, and the full mobile application lifecycle. Key Responsibilities Application Development Design, develop, and maintain native iOS applications using Swift. Build scalable, high-performance mobile solutions that deliver an exceptional user experience. Transform business and technical requirements into robust application functionality. Contribute to application architecture and technical design … maintainable, and testable code following industry best practices. Perform code reviews and provide constructive technical feedback. Troubleshoot, debug, and resolve application defects. Optimize application performance, responsiveness, and reliability. Ensure applications meet security, accessibility, and compliance requirements. Collaboration Work closely with Product Owners, Designers, Business Analysts, and Engineering teams. Participate ...

Web: Full Stack Tech Lead

Location
Greater London, England, United Kingdom
native builder : Cursor, v0 , Claude Code (and friends) are daily drivers for rapid prototyping and refactors. React + TypeScript mastery: component design, hooks, performance, testing (Vitest/Jest, Playwright). FastAPI expertise: async patterns, Pydantic schemas, pagination, auth (OAuth2/OIDC), rate‐limits, background jobs. Elasticsearch fluency: mappings …/analyzers (ngrams, synonyms), aggregations, filters, sorting, performance tuning. Cloud & DevOps : solid experience on AWS and/or GCP , Docker, Terraform, GitHub Actions, monitoring/alerts. Datastores : Postgres (SQL, migrations), Redis (caching/queues). Quality & security : code reviews, type safety, lint/format, secrets mgmt, least‐privilege ...

Senior Salesforce Developer

Location
City Of London, England, United Kingdom
Visualforce, SOQL/SOSL, triggers, controllers and Salesforce platform technologies . Design reusable development frameworks and components, ensuring high standards across code quality, performance, testing and maintainability . Implement complex Salesforce configuration, automation, workflows, approvals, validation rules and security controls . Agentforce, AI & Data Cloud Design and develop … leadership across Salesforce programmes, contributing to solution design, development standards, code reviews and engineering best practices . Drive continuous improvement across development, automation, platform performance and technical delivery. Key Skills Extensive hands‐on experience delivering enterprise Salesforce solutions , with strong development expertise across Apex, Lightning Web Components (LWC), Visualforce ...

Principal QA Automation Architect (Lead, Hybrid, Training)

Location
Greater London, England, United Kingdom
Scale Factory in the United Kingdom is seeking a Principal Software Developer in Test to lead automation and performance testing initiatives for diverse client projects. You will design, develop, and maintain automation frameworks, mentor engineers, and stay ahead with tool-agnostic approaches to testing strategy. Leverage your … extensive experience in consultancy or managed services to deliver high-quality testing solutions, collaborate with clients to tailor QA plans, and drive excellence #J-18808-Ljbffr ...

Senior Performance Tester – API & UI NFT Expert

Location
Greater London, England, United Kingdom
permanent basis to run NFT projects for client engagements in the UK. You will be involved in API, Front End and UI performance testing, with a focus on delivering reliable, scalable solutions in collaboration with agile teams and stakeholders. #J-18808-Ljbffr ...

Remote Lead QA Automation Engineer - Playwright/Cypress

Location
Greater London, England, United Kingdom
entertainment brand to hire an experienced Content QA Automation Lead. You will own QA automation across large-scale websites and digital content, reducing manual testing and boosting release quality. The requirements include Playwright, Cypress or Selenium, advanced Adobe Experience Manager (AEM), and proving automation in CI/CD. Knowledge … accessibility and performance testing is a plus. #J-18808-Ljbffr ...