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Manual UAT Tester

QA Automation Engineer
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What We’re Working On

We partner with global product teams to build high-performance, scalable systems that support real business workflows. As we expand into new feature areas and modernize existing platforms, we need a Manual UAT Tester who can validate end-to-end user journeys, ensure business requirements are met, and help us deliver a seamless experience to our clients and their customers.

You’ll join a cross-functional team of engineers, designers, and product owners working in an Agile environment. This role is fully remote.

What You’ll Do

  • Own User Acceptance Testing (UAT) for new features, enhancements, and end-to-end workflows
  • Collaborate with Product Owners, BAs, and stakeholders to understand business processes
  • Create clear, comprehensive test cases and acceptance scenarios
  • Execute manual tests across UI, workflow logic, integrations, and user-facing processes
  • Validate that the product meets business requirements and real-world use cases
  • Identify gaps, edge cases, inconsistencies, and missed requirements early
  • Document defects in a structured, actionable way using Jira
  • Participate in sprint ceremonies and provide test coverage updates
  • Support go-live readiness by ensuring all UAT criteria are met
  • Provide user-focused feedback to improve the product experience

What We’re Looking For

  • 3+ years of experience as a Manual QA or UAT Tester
  • Strong understanding of end-to-end business workflows
  • Experience translating business requirements into test cases
  • Hands-on testing experience across web applications and integrated systems
  • Familiarity with test management tools (TestRail, Zephyr, Qase, etc.)
  • Ability to communicate clearly with both technical and non-technical stakeholders
  • Strong documentation skills and an eye for detail
  • Comfortable working independently in a fast-paced, Agile environment
  • Proactive thinker who can anticipate risks and validate edge cases
  • Experience logging and tracking defects using Jira or similar tools

Bonus Points

  • Experience testing complex, multi-system workflows
  • Background in finance, banking, insurance, healthcare, or enterprise environments
  • Ability to support simple API validation (Postman)
  • Experience participating in UAT planning and go-live coordination
  • Exposure to BDD, acceptance criteria writing, or user story refinement

Location

This is a fully remote position; however, candidates must be able to work full UK business hours (GMT/BST) to ensure effective collaboration with our client and team. Preference will be given to candidates based in the UK, Europe, or regions within GMT to GMT+3 time zones.

Application Deadline

We’re moving quickly on this search — applications will be reviewed as they’re received. The target start date is immediate, and the application window will close by the 1st of December

Traits of a Lumen

Radically Engaged

Strong performers, constant communication, quality work. We deliver impact.

Bright mindset

Ambitious, energized, kind. We tackle with optimism.

Lead the way

Professional, adaptable, thoughtful. We set the standard.

Lightspeed

Agile, collaborative, action-first. We move fast to deliver the best.

Join the bright side

Hiring Process

Learn more about how we interview and select candidates.

Career Opportunities

Find a role that best matches your skill set and career goals.