Senior Quality Assurance Engineer

About KX:

Our mission is to accelerate data and AI-driven innovation with high performance analytics solutions, enabling our customers to transform into AI-first enterprises. KX is trusted by the world\’s top investment banks & hedge funds, aerospace and defence, life and health sciences, semiconductor, telecommunications, and advanced manufacturing companies.

Time series and vector data analytics and management are at the heart of our products, independently benchmarked as the fastest on the market. They help our customers process data at unmatched speed and scale and empower LOB leaders, developers, data scientists, and data engineers to build high-performance data-driven applications and turbocharge their favourite analytics tools in the cloud, on premise, or at the edge.

KX technology enables the discovery of richer, actionable insights for faster, better-informed decision making which drives competitive advantage and transformative growth for our customers. KX operates across North America, Europe, and Asia Pacific.

Role Overview:

We are seeking a highly skilled Senior QA Engineer to join our growing team and ensure the quality and reliability of our software solutions. The ideal candidate will have extensive experience in quality assurance of large-scale Enterprise Software products involving full software development lifecycle – starting from validation of user needs & software requirements to delivery of features and gathering feedback from to end users.

As a Senior QA Engineer at KX, you will be responsible for leading the quality assurance efforts for our software products. You will design and implement testing strategies, automate test cases, and work closely with development teams to identify and resolve issues. Your expertise will help us maintain high standards of quality and deliver exceptional products to our customers.

Your responsibilities will include helping the team deliver good quality responsive web applications with speed & efficiency, testing quality of features, defect reporting, helping the team with troubleshooting & debugging defects. Contribute towards internal technical documentation and liaising with support representatives to solve customer issues.

Key Responsibilities:

• Test Strategy: Develop and implement comprehensive test strategies and plans to ensure the quality of software products. Testing of both functional and non-functional element of the product features.
• Automation: Design, develop, and maintain automated test scripts using tools such as Cypress, Selenium, JUnit, or similar frameworks.
• API Testing: Implement API Testing strategies, standards & tooling
• Manual Testing: Perform manual testing when necessary to validate functionality and identify defects.
• Test Case Management: Create, maintain, and execute detailed test cases and test scenarios.
• Defect Tracking: Identify, document, and track defects using bug tracking tools like JIRA or Bugzilla.
• Collaboration: Work closely with development, product management, and other cross-functional teams to ensure quality throughout the software development lifecycle. Participate in code reviews and provide feedback on testability.
• Performance Testing: Conduct performance and load testing to ensure the software meets performance requirements.
• Regression Testing: Perform regression testing to ensure existing functionality is not affected by new changes.
• Continuous Improvement: Continuously improve testing processes and methodologies to enhance efficiency and effectiveness.
• Mentorship: Provide guidance and mentorship to junior QA engineers, fostering a collaborative and growth-oriented environment.
• Reporting: Report and track defects, and work with developers to resolve them, generate & present detailed test reports and metrics to stakeholders.

Key Skills and Qualifications:

• Qualifcations: Bachelor\’s degree in computer science, Engineering, or a related field or equivalent experience
• Experience: 7+ years of proven experience as a QA Engineer, QA Lead or similar role.
• Technical Expertise: Strong knowledge of QA methodologies, tools, and processes.
• Automation Skills: Proficiency in test automation tools and frameworks (e.g., Selenium, JUnit, TestNG).
• Programming: Basic understanding of programming languages such as Python or JavaScript.
• Manual Testing: Experience in manual testing and creating detailed test cases.
• Defect Tracking: Familiarity with defect tracking tools (e.g., JIRA, Bugzilla).
• Performance Testing: Experience with performance and load testing tools (e.g., JMeter, LoadRunner).
• Collaboration: Excellent collaboration skills and the ability to work effectively with cross-functional teams.
• Problem-Solving: Excellent problem-solving skills, ability to identify, analyse, and resolve issues effectively.
• Agile Methodologies: Familiarity with agile development processes and working in sprints.
• Communication & Soft Skills:
• Strong verbal and written communication skills.
• Strong interpersonal and communication skills.
• Highly motivated and self-directed, capable of multi-tasking, and able to work with minimal supervision.
• Exceptional attention to detail

Required Tools and Technologies:

• Test Suite: Demonstrable ability to manage & maintain of Test Suits in a test management software.
• Languages & Frameworks: Test automation scripting – Selenium / Cypress, basic knowledge of JavaScript/Typescript
• API Testing: API Testing strategies, standards & tooling – REST/GraphQL/gRPC, Open API v3, cURL, PostMan
• Version Control: Good understanding of Version control – Git
• Agile Tooling: JIRA, Confluence
• Development Tools: VS Code, Basic Scripting – Bash, PowerShell

What would help:

• Languages & Frameworks: Basic knowledge of Python, JavaScript/Typescript, HTML5/CSS, Responsive UI design
• Containerization: Some exposure of containerization technologies (e.g., Docker, Kubernetes).
• Cloud Platforms: Basic familiarity with cloud platforms – AWS (Preferred) / Azure / GCP
• CI/CD Tools: Some exposure to CI/CD tooling such as GitLab CI, GitHub Actions.
• DevOps, DevSecOps: Basic understanding of DevOps & DevSecOps best practices.
• Security & Privacy: Good Understanding of security testing strategies, chaos & performance testing, security benchmarks (Pen Testing, CIS/NIST etc) and privacy legislations (GDPR)
• Development Tools: Some experience with VS Code, Basic Scripting – Bash, PowerShell
• Databases: Basic understanding of SQL/NoSQL databases (PostgreSQL, MongoDB, Redis) and their testing.

Location & Workplace Type:

This position takes on a hybrid working model based in London.

Why Choose KX?

Data Driven: We lead with instinct and follow fact.

Naturally Curious: We lean in, listen and learn fast.

All In: We take ownership, take on challenges and give it our all