MCS Group are delighted to be working EXCLUSIVELY with a fast-growing cybersecurity scale-up specialising in modern mobile security and device protection.
Their platform helps organisations keep employee devices safe by identifying vulnerabilities, risky settings, outdated software, and potential indicators of compromise - then guiding users through simple steps to fix them.
They're addressing a major gap in the market by treating mobile devices with the same level of security and visibility as traditional enterprise endpoints.
The company is well-funded, backed by strong industry partners, and has a clear long-term roadmap.
The Belfast engineering team is at the heart of the product - working on core integrations, backend systems, and complex technical challenges that have real impact on the overall platform.
The role
We're looking for a
Senior QA Engineer
to take ownership of
end-to-end quality
across the product stack.
You'll work closely with engineering and product teams to ensure new features are reliable, well-tested, and ready for release.
This is a hands-on role with real influence over testing strategy, release readiness, and overall product quality.
Key Responsibilities
Execute
manual testing
across web applications, APIs, mobile apps (iOS & Android), and backend services
Design and maintain
test plans, test cases, and regression suites
Perform
exploratory and edge-case testing
Validate
data accuracy and integrity
across backend systems and pipelines
Test
REST APIs
using tools such as Postman or similar
Log, track, and help triage defects with engineering teams
Support release cycles and act as a
quality gate
before deployment
Promote QA best practices and continuous improvement
Requirements
5+ years' experience in QA, ideally in a senior or lead capacity
Strong background in
manual testing
across web, API, and mobile platforms - MUST HAVE STRONG MOBILE API TESTING!
Experience testing
RESTful APIs
Understanding of structured data (e.g. JSON, CSV) and backend validation
Working knowledge of
SQL
for basic data checks
Strong attention to detail and clear documentation skills
Comfortable working in a fast-paced, changing environment
Confident collaborating across multiple teams
What's in it for you?
Highly Competitive base salary, flexible dependant on experience.
Unlimited PTO
Pension contribution
Steer the direction of a soon to be multi-award-winning product worldwide
Ownership and freedom to put your own stamp on the work you do
Join a team where all ideas are encouraged and welcomed
Flexible working and remote working options - Must be able to commute to Belfast office at least once a week.
To speak in absolute confidence about this opportunity please contact Rachael Walker, IT Recruitment Manager at MCS Group *********** or click the apply button below.
If this position is not right for you, we have others that are.
Please visit MCS Group to view a wide selection of our current jobs or give us a call *************.
All conversations will be treated in the strictest of confidence.
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