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NSL – Site Reliability Engineer

BAE Systems

Software and Technology Jobs

NSL – Site Reliability Engineer

full-timePosted: Jan 7, 2026

Job Description

 

Location(s): UK, Europe & Africa : UK : Leeds 

 

BAE Systems Digital Intelligence is home to 4,500 digital, cyber and intelligence experts. We work collaboratively across 10 countries to collect, connect and understand complex data, so that governments, nation states, armed forces and commercial businesses can unlock digital advantage in the most demanding environments.
 

Job Description

Site Reliability Engineering is a rapidly growing concept in industry, with a remit to drive the quality, reliability and performance of essential systems. As a Site Reliability Engineer you'll be part of a team in BAE Systems at the forefront of this. We are in the process of building our teams and tools and with your help will create a culture of continual improvement to revolutionise the way our customers systems are built and supported. You’ll typically possess some degree of blend between software engineering, operational production support and infrastructure engineering (Linux, networking) and be part of a small team, but one which could be working with hundreds of other engineers to drive a step change in the reliability of systems.

Key accountabilities

As an SRE, fundamentally you will be doing work that has historically been done by an operations team, but using software and systems engineering expertise to substitute automation for human labour, limiting traditional manual operations work (incident tickets, on-call etc.) to no more than half of the SRE team's time.

Core role accountabilities include:

  • Supporting and maintaining essential service that support core mission applications, proactively enhancing their availability, performance and stability;
  • Finding innovative solutions to problems rather than undertaking repetitive work, automating everything you can. You will work alongside product teams, advising them of good practice in how to design and build systems, learning from what you know works well. And you will never be asked to spend more than 50% of your time on support (otherwise the product team supports the excess work until the support work returns to 50% or less);
  • You will instrument applications where they don’t have sufficient monitoring in place, and use the output of it to demonstrate the improvements your team are making on a daily basis. You will be well versed in the relationship between software and infrastructure, understanding the characteristics of systems that enable them to be scalable and resilient to failure, and how to get the best out of the infrastructure they are deployed to;
  • Participating in the wider DevOps/SRE community within the organisation;

Competencies

  • Typically have experience in the following:
    • Software development in Java and web technologies, e.g. JavaScript and HTML
    • Familiarisation with database technologies such as Elastic, Mongo
    • Know your way around Linux and Windows command lines, e.g. Bash and PowerShell
    • Hands on experience with cloud infrastructure such as AWS, Azure or OpenStack
    • Use of deployment tools such as chef and puppet
    • Expertise in monitoring large systems using technologies such as ELK
    • Experience of working in an Agile scrum team, and the tooling that supports it, e.g. Jira
    • Diagnosing and troubleshooting application issues resulting in service outages
    • Troubleshooting skills across different levels of the stack
    • Understanding of ITIL terminology
    • Experience with container management and micro-services architectures such as Docker
    • Experience extending and improving Open Source Software
    • Familiarisation with automation test frameworks such as Selenium
  • Awareness and insight into technology trends to adopt new cutting edge tools

Life at BAE Systems Digital Intelligence 

We are embracing Hybrid Working. This means you and your colleagues may be working in different locations, such as from home, another BAE Systems office or client site, some or all of the time, and work might be going on at different times of the day.

By embracing technology, we can interact, collaborate and create together, even when we’re working remotely from one another. Hybrid Working allows for increased flexibility in when and where we work, helping us to balance our work and personal life more effectively, and enhance well-being.

Diversity and inclusion are integral to the success of BAE Systems Digital Intelligence. We are proud to have an organisational culture where employees with varying perspectives, skills, life experiences and backgrounds – the best and brightest minds – can work together to achieve excellence and realise individual and organisational potential.

Division overview: Government

At BAE Systems Digital Intelligence, we pride ourselves in being a leader in the cyber defence industry, and Government contracts are an area we have many decades of experience in. Government and key infrastructure networks are critical targets to defend as the effects of these networks being breached can be devastating.

As a member of the Government business unit, you will defend the connected world and ensure the protection of nations. We all have a role to play in defending our clients, and this is yours.

 

 

Locations

  • Leeds, United Kingdom

Salary

Estimated Salary Rangemedium confidence

45,000 - 65,000 GBP / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Software engineeringintermediate
  • Operational production supportintermediate
  • Infrastructure engineering (Linux, networking)intermediate
  • Automationintermediate
  • Monitoring and instrumentationintermediate
  • Scalability and resilienceintermediate
  • Collaboration and communicationintermediate
  • Problem-solvingintermediate
  • Innovationintermediate
  • Agile methodologiesintermediate

Required Qualifications

  • Software development in Java and web technologies, e.g. JavaScript and HTML (experience)
  • Familiarisation with database technologies such as Elastic, Mongo (experience)
  • Hands on experience with cloud infrastructure such as AWS, Azure or OpenStack (experience)
  • Use of deployment tools such as chef and puppet (experience)
  • Expertise in monitoring large systems using technologies such as ELK (experience)
  • Experience of working in an Agile scrum team, and the tooling that supports it, e.g. Jira (experience)
  • Diagnosing and troubleshooting application issues resulting in service outages (experience)
  • Troubleshooting skills across different levels of the stack (experience)
  • Experience with container management and micro-services architectures such as Docker (experience)

Preferred Qualifications

  • Experience extending and improving Open Source Software (experience)
  • Familiarisation with automation test frameworks such as Selenium (experience)
  • Understanding of ITIL terminology (experience)

Responsibilities

  • Supporting and maintaining essential service that support core mission applications, proactively enhancing their availability, performance and stability
  • Finding innovative solutions to problems rather than undertaking repetitive work, automating everything you can
  • Instrumenting applications where they don’t have sufficient monitoring in place, and using the output to demonstrate improvements
  • Participating in the wider DevOps/SRE community within the organisation

Benefits

  • general: Embracing Hybrid Working for increased flexibility and work-life balance
  • general: Diversity and inclusion culture to enhance well-being and organisational potential

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BAE Systems logo

NSL – Site Reliability Engineer

BAE Systems

Software and Technology Jobs

NSL – Site Reliability Engineer

full-timePosted: Jan 7, 2026

Job Description

 

Location(s): UK, Europe & Africa : UK : Leeds 

 

BAE Systems Digital Intelligence is home to 4,500 digital, cyber and intelligence experts. We work collaboratively across 10 countries to collect, connect and understand complex data, so that governments, nation states, armed forces and commercial businesses can unlock digital advantage in the most demanding environments.
 

Job Description

Site Reliability Engineering is a rapidly growing concept in industry, with a remit to drive the quality, reliability and performance of essential systems. As a Site Reliability Engineer you'll be part of a team in BAE Systems at the forefront of this. We are in the process of building our teams and tools and with your help will create a culture of continual improvement to revolutionise the way our customers systems are built and supported. You’ll typically possess some degree of blend between software engineering, operational production support and infrastructure engineering (Linux, networking) and be part of a small team, but one which could be working with hundreds of other engineers to drive a step change in the reliability of systems.

Key accountabilities

As an SRE, fundamentally you will be doing work that has historically been done by an operations team, but using software and systems engineering expertise to substitute automation for human labour, limiting traditional manual operations work (incident tickets, on-call etc.) to no more than half of the SRE team's time.

Core role accountabilities include:

  • Supporting and maintaining essential service that support core mission applications, proactively enhancing their availability, performance and stability;
  • Finding innovative solutions to problems rather than undertaking repetitive work, automating everything you can. You will work alongside product teams, advising them of good practice in how to design and build systems, learning from what you know works well. And you will never be asked to spend more than 50% of your time on support (otherwise the product team supports the excess work until the support work returns to 50% or less);
  • You will instrument applications where they don’t have sufficient monitoring in place, and use the output of it to demonstrate the improvements your team are making on a daily basis. You will be well versed in the relationship between software and infrastructure, understanding the characteristics of systems that enable them to be scalable and resilient to failure, and how to get the best out of the infrastructure they are deployed to;
  • Participating in the wider DevOps/SRE community within the organisation;

Competencies

  • Typically have experience in the following:
    • Software development in Java and web technologies, e.g. JavaScript and HTML
    • Familiarisation with database technologies such as Elastic, Mongo
    • Know your way around Linux and Windows command lines, e.g. Bash and PowerShell
    • Hands on experience with cloud infrastructure such as AWS, Azure or OpenStack
    • Use of deployment tools such as chef and puppet
    • Expertise in monitoring large systems using technologies such as ELK
    • Experience of working in an Agile scrum team, and the tooling that supports it, e.g. Jira
    • Diagnosing and troubleshooting application issues resulting in service outages
    • Troubleshooting skills across different levels of the stack
    • Understanding of ITIL terminology
    • Experience with container management and micro-services architectures such as Docker
    • Experience extending and improving Open Source Software
    • Familiarisation with automation test frameworks such as Selenium
  • Awareness and insight into technology trends to adopt new cutting edge tools

Life at BAE Systems Digital Intelligence 

We are embracing Hybrid Working. This means you and your colleagues may be working in different locations, such as from home, another BAE Systems office or client site, some or all of the time, and work might be going on at different times of the day.

By embracing technology, we can interact, collaborate and create together, even when we’re working remotely from one another. Hybrid Working allows for increased flexibility in when and where we work, helping us to balance our work and personal life more effectively, and enhance well-being.

Diversity and inclusion are integral to the success of BAE Systems Digital Intelligence. We are proud to have an organisational culture where employees with varying perspectives, skills, life experiences and backgrounds – the best and brightest minds – can work together to achieve excellence and realise individual and organisational potential.

Division overview: Government

At BAE Systems Digital Intelligence, we pride ourselves in being a leader in the cyber defence industry, and Government contracts are an area we have many decades of experience in. Government and key infrastructure networks are critical targets to defend as the effects of these networks being breached can be devastating.

As a member of the Government business unit, you will defend the connected world and ensure the protection of nations. We all have a role to play in defending our clients, and this is yours.

 

 

Locations

  • Leeds, United Kingdom

Salary

Estimated Salary Rangemedium confidence

45,000 - 65,000 GBP / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Software engineeringintermediate
  • Operational production supportintermediate
  • Infrastructure engineering (Linux, networking)intermediate
  • Automationintermediate
  • Monitoring and instrumentationintermediate
  • Scalability and resilienceintermediate
  • Collaboration and communicationintermediate
  • Problem-solvingintermediate
  • Innovationintermediate
  • Agile methodologiesintermediate

Required Qualifications

  • Software development in Java and web technologies, e.g. JavaScript and HTML (experience)
  • Familiarisation with database technologies such as Elastic, Mongo (experience)
  • Hands on experience with cloud infrastructure such as AWS, Azure or OpenStack (experience)
  • Use of deployment tools such as chef and puppet (experience)
  • Expertise in monitoring large systems using technologies such as ELK (experience)
  • Experience of working in an Agile scrum team, and the tooling that supports it, e.g. Jira (experience)
  • Diagnosing and troubleshooting application issues resulting in service outages (experience)
  • Troubleshooting skills across different levels of the stack (experience)
  • Experience with container management and micro-services architectures such as Docker (experience)

Preferred Qualifications

  • Experience extending and improving Open Source Software (experience)
  • Familiarisation with automation test frameworks such as Selenium (experience)
  • Understanding of ITIL terminology (experience)

Responsibilities

  • Supporting and maintaining essential service that support core mission applications, proactively enhancing their availability, performance and stability
  • Finding innovative solutions to problems rather than undertaking repetitive work, automating everything you can
  • Instrumenting applications where they don’t have sufficient monitoring in place, and using the output to demonstrate improvements
  • Participating in the wider DevOps/SRE community within the organisation

Benefits

  • general: Embracing Hybrid Working for increased flexibility and work-life balance
  • general: Diversity and inclusion culture to enhance well-being and organisational potential

Target Your Resume for "NSL – Site Reliability Engineer" , BAE Systems

Get personalized recommendations to optimize your resume specifically for NSL – Site Reliability Engineer. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "NSL – Site Reliability Engineer" , BAE Systems

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

Digital IntelligenceEngineeringExperienced professionalsDigital IntelligenceEngineeringExperienced professionals

Answer 10 quick questions to check your fit for NSL – Site Reliability Engineer @ BAE Systems.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.