Senior tester Work, Jobs in Middlesex, Gtl (with Salaries)

Senior OAT Tester (SC Eligible/ Cleared)
Scrumconnect Consulting —Staines-upon-Thames
- £48,000 a year
- Azure
- AWS
- Analysis skills
4d
Senior Performance Tester (SC Eligible/ Cleared)
Scrumconnect Consulting —Staines-upon-Thames
- £50,000 a year
- Full-time
- AWS
- APIs
- Agile
4d
Senior QA Tester (SC Cleared)
Scrumconnect Consulting —Staines-upon-Thames
- £300 - £350 a day
- Travel
- Scripting
- Agile
Senior Performance Tester
IT VALLEY (LONDON) LIMITED —Egham
- £40,000 - £52,000 a year
- Full-time
- Azure
- Sales
- Java
Quick apply
OAT Tester (SC cleared/Eligible)
Scrumconnect Consulting —Staines-upon-Thames
- £40,000 a year
- Azure
- AWS
- Agile
4d
Senior Penetration Tester
NPL —Teddington
- Computer networking
- Software development
- In-person
Senior Accessibility Tester
Atos —London
- JavaScript
- Communication skills
- HTML
- Annual leave
7d
Senior Test Analyst - Brno
Deltatre —London
- Weekend availability
- Computer literacy
- English
- Windows
- Annual leave
Quick apply
Senior Automation Tester
DLA Piper —London
- Mentoring
- Scripting
- APIs
QA Automation Tester
Scrumconnect Consulting —Croydon
- £65,000 a year
- Oracle
- DevOps
- SQL
Test Analyst
Arbuthnot Latham —London
- Azure
- Salesforce
- Microsoft Office
11d
Junior Penetration Tester
Cooper Parry —Reading
- Full-time
- Remote
- Computer Science
- Java
- C++
Senior Penetration Tester - CTM
Instil Software Ltd —London
- Full-time
- Remote
- Windows
- Scripting
- Computer networking
- Employee assistance programme
5d
Senior Product Manager
Pointr —London
- £100,000 a year
- Full-time
- Hybrid work
- Travel
Senior Consultant, Salesforce Testing
Kate Matthews Solutions —London
- £40,000 - £60,000 a year
- Salesforce
- Agile
Senior Professional Tester, Actuarial Systems
Pacific Life Re Services Limited —London
- Microsoft Word
- Microsoft Excel
- Management
- Annual leave
- Employee assistance programme
Quick apply
Senior QA Tester - Paper.io 2
Voodoo —London
- Full-time
- Remote
- Management
- English
- Communication skills
7d
Senior Developer
TrinityBridge —London
- Azure
- DevOps
- SQL
Senior Business Analyst
Northrop Grumman —London
- Analysis skills
- Travel
- Agile
Trainee PAT Tester
Intersafe Part of Complii —High Wycombe
- £26,436.80 - £30,000.00 a year
- Full-time
- Schematics
- Maintenance
- No experience needed
- Annual leave
- Flexible schedule
Quick apply

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Senior OAT Tester (SC Eligible/ Cleared)

Scrumconnect Consulting
Staines-upon-Thames

Apply Now

Job details

Permanent
£48,000 a year
4 days ago

Qualifications

Azure
AWS
Analysis skills
Release management
ITIL
User acceptance testing
Software testing
Agile
Problem management
Root cause analysis
Communication skills

Full job description

Job Information

Date Opened

10/07/2026

Job Type

Permanent

Industry

IT Services

Salary

48K

City

Staines

Province

Surrey

Country

United Kingdom

Postal Code

TW18

Job Description

Senior Operational Acceptance Tester (SFIA Level 4)

About Scrumconnect

Scrumconnect Consulting is a UK-based digital transformation consultancy delivering secure, scalable, and user-centred solutions across government and enterprise organisations. We specialise in agile delivery, cloud platforms, data, and modern engineering practices—helping clients build reliable services that meet high operational and compliance standards.

Role Overview – Senior Operational Acceptance Tester

The Senior Operational Acceptance Tester (OAT) is responsible for planning, coordinating, and executing Operational Acceptance Testing activities to ensure applications and services are fully operationally ready before production deployment.

You will work closely with delivery teams, infrastructure, DevOps, service management, and business stakeholders to validate operational readiness, identify operational risks, and provide confidence for successful production releases.

Key Responsibilities

Operational Acceptance Testing

Plan and execute Operational Acceptance Testing activities across multiple releases.
Define operational test scenarios, test data, and execution plans.
Validate operational readiness before production deployment.
Ensure OAT activities align with release and deployment schedules.

Operational Test Execution

Execute and coordinate testing for:

Monitoring and alert validation
Alert simulation and escalation testing
Backup and restore validation
Failover and disaster recovery testing
Batch processing and restart validation
Stability and soak testing
Operational support procedures
Security and access validation
Environment verification

Defect & Evidence Management

Produce comprehensive operational test evidence.
Record, prioritise, and manage operational defects.
Support root cause analysis of production readiness issues.
Coordinate retesting after fixes.
Maintain OAT documentation and audit artefacts.

Collaboration

Work closely with DevOps, Infrastructure, Service Management, and Development teams.
Participate in release readiness and go-live reviews.
Support operational sign-off activities.
Contribute to continuous improvement of operational testing practices.

Mentoring

Support and mentor junior testers.
Review operational test cases and evidence.
Promote testing best practices across the team.

Required Experience

4–7 years of Software Testing experience.
Strong hands-on Operational Acceptance Testing (OAT) experience.
Experience executing production readiness testing.
Good understanding of SIT, UAT, and Release Management.
Experience with defect management tools.
Excellent analytical and troubleshooting skills.
Strong documentation and stakeholder communication skills.
Experience working within Agile delivery teams.
Experience working in regulated or enterprise environments.

Nice to Have

Exposure to AWS and/or Azure.
Experience with monitoring and logging platforms.
Understanding of ITIL processes.
Knowledge of Change, Incident, and Problem Management.
Exposure to CI/CD pipelines.

Our Commitment to Diversity & Inclusion

At Scrumconnect Consulting, we believe diversity drives innovation. We are committed to fostering an inclusive workplace where everyone feels respected, valued, and supported.

We actively encourage applications from women, people with disabilities, individuals from under-represented communities, and those seeking flexible working arrangements.

As a Disability Confident Level 1 employer, we provide reasonable adjustments throughout the recruitment process and employment to ensure equal opportunity for all.

Apply Now

Refine Your Search

senior tester jobs in middlesex, gtl

Senior OAT Tester (SC Eligible/ Cleared)

Senior Performance Tester (SC Eligible/ Cleared)

Senior QA Tester (SC Cleared)

Senior Performance Tester

OAT Tester (SC cleared/Eligible)

Senior Penetration Tester

Senior Accessibility Tester

Senior Test Analyst - Brno

Senior Automation Tester

QA Automation Tester

Test Analyst

Junior Penetration Tester

Senior Penetration Tester - CTM

Senior Product Manager

Senior Consultant, Salesforce Testing

Senior Professional Tester, Actuarial Systems

Senior QA Tester - Paper.io 2

Senior Developer

Senior Business Analyst

Trainee PAT Tester

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