. Solid understanding of Linux/JVM internals and performance tuning. Expertise in modern software development practices, including TDD, Agile, and continuous integration. Hands-on experience with tools like JUnit, Mockito, and Unix/Linux environments. Qualifications: A wealth of experience building business-critical applications in a full-stack manner. Strong understanding of computer science fundamentals, including algorithms, complexity, and More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Noir
London/Hybrid (Data Engineer, SQL Data Engineer, Java, Python, Spark, Scala, SQL, Snowflake, OO programming, Snowflake, Databricks, Data Fabric, design patterns, SOLID principles, ETL, Unit testing, NUnit, MSTest, Junit, Microservices Architecture, Continuous Integration, Azure DevOps, AWS, Jenkins, Agile, Data Engineer, SQL Data Engineer) We have several fantastic new roles including a Data Engineer position to join a growing global … Engineer who has advanced working knowledge of Snowflake/Databricks and Java/Python, as well as experience with Microservices Architecture and Continuous Integration. Exposure to NUnit, MSTest and Junit would be beneficial, along with knowledge of ETL, Azure DevOps, AWS, and Jenkins. There is a vast amount of knowledge and experience within the business to share with the right More ❯
of Java, JVM, memory management, garbage collection Thorough understanding of multithreaded environment challenges Expert knowledge of Spring, SpringBoot framework and associated technologies Expert knowledge of test frameworks, such as Junit, Mockito, writing easily-testable code Expertise in Java debugging, including remote debugging of services deployed to K8s Expert knowledge of Kubernetes and associated technologies such as KEDA, Karpenter, ClusterAutoscaler, CoreDNS More ❯
manual testing We're looking for you if you have Solid Java skills Experience writing automated tests for REST APIs using Java Experience with a test engine such as JUnit or TestNG (preferably JUnit) Ability to work with relational databases through code Experience with Git Experience with either Maven or Gradle Bonus Points Experience with Spring Boot (used for DI More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Eligo Recruitment
database management. Experience with Redis for caching and performance optimisation. Knowledge of message queueing systems like AWS SQS or RabbitMQ . Well-versed in Test-Driven Development (TDD) with JUnit for robust testing. Understanding of Kubernetes for container orchestration. Familiarity with AWS cloud services for scalable application deployment. If you're passionate about building robust, scalable and resilient back end More ❯
tools: GitHub, Jira, Notion, ChatGPT, Gemini, LangChain, AI-native IDE's (Cursor, JetBrains), LLM-powered internal tools. Test automation: Cypress (E2E), Postman (API), Jest (frontend unit), PHPUnit (backend unit), JUnit (Android), XCTest (iOS). WHAT WE OFFER YOU A front-row seat in a fast scaling, early stage startup. Working on cutting edge problems with brand new technologies. Join a More ❯
tools: GitHub, Jira, Notion, ChatGPT, Gemini, LangChain, AI-native IDE's (Cursor, JetBrains), LLM-powered internal tools. Test automation: Cypress (E2E), Postman (API), Jest (frontend unit), PHPUnit (backend unit), JUnit (Android), XCTest (iOS). WHAT WE OFFER YOU A front-row seat in a fast scaling, early stage startup. Opportunity to define the ML/AI stack and ship novel More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Lorien
Role: Automation Tester Location: UK-based (Hybrid working available) Contract Length: 6 months (initially) Start Date: ASAP Overview: Our leading Financial Services client is seeking an experienced Automation Tester to join their technology team. This role will focus on designing More ❯
understanding of the Java language and object oriented principles Expertise applying test practices in an agile environment Experience in working with Python Experience with unit testing frameworks such as JUnit Experience testing backend systems or APIs Experience with any of the following is an asset: Testing performance with JMeter or similar tools Web services technology such as REST, JSON or More ❯
and a collaborative work environment. To succeed in this role, you should have: Proven experience in automation testing (3+ years). Proficiency in automation testing tools (e.g., Selenium, TestNG, JUnit). Strong knowledge of programming languages (e.g., Java, Python, C#). Familiarity with CI/CD tools and practices. Experience with version control systems (Git). Excellent problem-solving skills More ❯
with SQL and NoSQL databases Hands-on with Python , especially in data handling (pandas, scikit-learn, etc.) Familiarity with RESTful web services and event-driven architectures Strong debugging, testing (JUnit or equivalent), and system design skills Passion for building scalable , reliable platforms that support real-world use cases Experience in financial markets , trade surveillance , or regulatory technology (RegTech) Familiarity with More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Deerfoot Recruitment Solutions Limited
and documentation. What You Bring 8+ years of test development experience, including 2+ years leading a team. Strong expertise in Java, object-oriented principles, and unit testing frameworks (e.g., JUnit). Experience testing backend systems or APIs, with knowledge of REST, JSON, or Thrift. Bonus: Familiarity with Selenium WebDriver, Jenkins, big data technologies (Hadoop, Kafka), or performance testing tools like More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Deerfoot Recruitment Solutions Ltd
and documentation. What You Bring 8+ years of test development experience, including 2+ years leading a team. Strong expertise in Java, object-oriented principles, and unit testing frameworks (e.g., JUnit). Experience testing backend systems or APIs, with knowledge of REST, JSON, or Thrift. Bonus: Familiarity with Selenium WebDriver, Jenkins, big data technologies (Hadoop, Kafka), or performance testing tools like More ❯
London, Manchester, North West Hybrid / WFH Options
Starling Bank
high quality code, that is why testing is another key quality we look for when expanding our team. We use Espresso to write our UI/E2E Test and JUnit to write our Unit Tests across all layers of the application, as well as manually test all features before they go into production. We also work closely with QA engineers More ❯