Site Reliability Engineer

Liberty Charge Ltd.; London; On-site; GBP 60,000 - 90,000; Full time

Job summary

Join a leading company on a mission to build the UK's most reliable electric vehicle charging network as a Senior Site Reliability Engineer. You will be responsible for optimizing infrastructure and ensuring system scalability during critical migrations. As part of a passionate team, your expertise in AWS and automation tools will drive impactful solutions in a fast-paced, dynamic environment.

Benefits

Competitive salary and bonus scheme

25 days’ annual leave plus bank holidays

Access to wellbeing and mental health benefits

Pension contribution matched up to 10%

Access to learning platform for career growth

24 hours a year Volunteer Time Off

Hybrid working options possible

Qualifications

• Proven experience building and managing scalable cloud infrastructure.
• Deep knowledge of AWS services and cost-optimization techniques.
• Experience with observability and incident response workflows.

Responsibilities

• Automate infrastructure deployment and management using Terraform.
• Containerize services using Docker for scalability and reliability.
• Implement observability and monitoring solutions.

Skills

Terraform

Docker

AWS

Sentry

Prometheus

Datadog

CI/CD

Problem-Solving

Communication

Job description

Social network you want to login/join with:

At Believ, formerly known as Liberty Charge, we believe sustainable transport should be accessible to everyone. We’re a Charge Point Operator (CPO) on a mission to create the UK’s most reliable electric vehicle charging network that doesn’t cost the earth and leaves no one behind.

We work closely with local authorities and businesses to deliver reliable, high quality charging networks at pace, at scale and at zero cost.

We offer all the advantages of being a scale-up business, but with the added security and long-term backing from well-known parents - Liberty Global (who also own our delivery partner, Virgin Media O2) and Zouk Capital (who manage the Government’s Charging Investment Infrastructure Fund).

You’ll be joining this exciting journey at the start of our scale-up phase, and work with us to hit the ambitious targets our shareholders have set. You’ll become part of a passionate and supportive team in a fast-paced, dynamic and result-driven environment.

About the role

We are seeking an experienced Senior Site Reliability Engineer (SRE) to support the development and operation of our in-house Charge Point Management System (CPMS) and customer-facing app and web portal. Reporting into the Head of Engineering, this role will be responsible for automating and optimizing the infrastructure to ensure stability and scalability during the migration from the incumbent SaaS solution and beyond. Following the migration, the focus will shift to enhancing performance, reliability, and innovation to deliver a market-leading platform.

Key responsibilities:

Infrastructure Automation:

• Automate infrastructure deployment and management using Terraform.
• Containerize services with Docker for scalability and reliability.
• Implement observability and monitoring solutions using tools such as Sentry, Prometheus or Datadog.
• Build robust CI/CD pipelines for automated deployments.
• Manage cloud environments, particularly AWS services such as ECS, Lambda, and RDS.

Protocol Support:

• Work on infrastructure enabling OCPP/OCPI protocol support for the CPMS.
• Develop and maintain incident response plans to quickly resolve system outages.

About you

At Believ, we are building a culture that attracts and retains the best talent. We are a dedicated and high-performing team, accustomed to working at pace in an ever-evolving industry, and we are looking for people who are as passionate as us about cutting carbon emissions and providing cleaner air for all. The successful candidate will have the following attributes and skills:

Knowledge & Experience:

• Proven experience building and managing scalable cloud infrastructure.
• Deep knowledge of AWS services and cost-optimization techniques.
• Experience with observability and incident response workflows.
• Strong understanding of Agile methodologies and collaboration tools like Jira and Confluence.
• Ability to understand and consider the broader business context and long-term implications of technical decisions.
• Willingness to take ownership, innovate, and proactively seek opportunities to drive impact beyond immediate tasks.
• Strong focus on delivering solutions that align with business goals and address real-world challenges effectively.
• Commitment to delivering exceptional user experiences by prioritizing customer needs and feedback throughout the development process.
• Demonstrate enthusiasm, resilience, and a can-do approach to tackling challenges and driving success.

Skills & Abilities:

• Expertise in Terraform, Docker, and AWS.
• Strong knowledge of monitoring tools such as Sentry, Prometheus or Datadog.
• Familiarity with OCPP/OCPI protocol implementations.
• Proven ability to implement and manage CI/CD pipelines.
• Strong problem-solving and communication skills.
• Competitive salary and bonus scheme
• 25 days’ annual leave, plus the usual 8 UK Bank Holidays and the option to purchase up to 5 additional days per year*
• Access to wellbeing and mental health benefits such as the Calm app, personal medical insurance, critical illness cover, dental, optical & travel insurance, income protection and life assurance
• Pension contribution matched up to 10%
• Access to our car benefit scheme and cycle to work scheme
• Access to our online learning platform to continue to develop and grow your career with us.
• 24 hours a year Volunteer Time Off to support causes that are important to you
• Virgin Media / O2 discounts and offers
• Access to VIP Arena Suites at the O2 Arena (London) and First Direct Arena (Leeds)
• Enhanced parental leave policies

* This perk can only be availed for the following calendar year by employees who started before 1st December