Insight Global are seeking a Automation Tester to join a global banking and financial services organisation, supporting the modernisation of a global liquidity management platform as it transitions from a monolithic architecture to microservices.
This position requires 3 days onsite in Chester, UK for a 12-month rolling contract (Inside IR35).
This role is focused on building integration test coverage across a complex and evolving platform. You will operate as a self-starter, defining the testing strategy, identifying gaps in coverage, and implementing automated solutions to improve system reliability and scalability. This is a highly autonomous role where you will reverse-engineer behaviour, rebuild domain knowledge, and create structure in an environment with minimal pre-defined requirements.
Key Responsibilities:- Own and expand integration test coverage, focusing on edge cases and historically neglected areas
- Define and implement integration testing strategy from the ground up
- Reverse-engineer system and message flows to rebuild and document functional knowledge
- Design and develop API and service-level automated tests across a microservices architecture
- Validate complex end-to-end message flows, including financial messaging formats
- Build data-driven tests and validate outputs against Oracle databases
- Embed automated test suites into CI/CD pipelines for continuous execution
- Collaborate with development teams to improve testability as systems evolve
- Strong hands-on experience in test automation, particularly integration and API testing
- Experience working in Java-based testing environments (JUnit or TestNG)
- REST API automation using tools such as REST Assured or Postman
- Experience with contract testing tools such as Pact within microservices architectures
- Strong SQL skills with hands-on experience querying Oracle databases
Experience integrating tests into CI/CD pipelines using Jenkins (knowledge of XLR or Ansible beneficial) - Unix/Linux and Bash scripting experience
- Ability to work autonomously, define priorities, and create structure in ambiguous environments
Skills:
- Knowledge of financial messaging standards (e.g. ISO 20022)
- Background in financial services, particularly transaction banking or payments
- Experience supporting monolith-to-microservices transformation programmes
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