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About the Role

As we transition to a truly product-led organisation, SRE becomes the pulse of engineering — the centre of excellence for reliability, monitoring, and observability. You’ll shape our new foundational platform, harden its resilience, and ensure it consistently meets the expectations of our customers. You’ll automate away manual toil, streamline operations, and build the systems and tooling that allow engineering teams to move faster with confidence. Alongside the new platform, you’ll also take ownership of our existing estate — tuning, optimising, and evolving it to modern standards. This is a hands-on role embedded deeply in the engineering community, operating with a product mindset and delivering value just like any other high-performing team.

Responsibilities

Implement best practices for monitoring, alerting, and incident response using DataDog and other tools.
Design, build, and maintain cost-effective, reliable, and scalable AWS infrastructure.
Collaborate with cross-functional teams to identify and address performance bottlenecks and reliability issues.
Conduct post-incident reviews to analyse root causes and implement preventive measures.
Automate routine tasks and processes to improve efficiency and reduce manual intervention.
Participate in an on-call rotation to respond to system outages and emergencies.

Requirements

Expertise in setting up and managing alerts, dashboards, and logging.
Understanding of networking concepts, security best practices, and performance optimization in AWS.
Proficiency in AWS services: EKS, EC2, ECS, S3, RDS, VPC, IAM, Route 53, etc.
Experience with containerization and orchestration tools like Docker and Kubernetes.
Strong knowledge of Infrastructure as Code (IaC) tools such as Terraform, CDK or CloudFormation.
Knowledge of scripting and automation using languages like Python, Bash, or PowerShell.
Experience with CI/CD pipelines for deploying and testing applications in AWS.

Skills

Monitoring and observability best practice including using tools like Datadog, Prometheus, Grafana
AWS
Docker
Kubernetes
Terraform
CDK
CloudFormation
Python
Bash
PowerShell
CI/CD

Location

Remote-first
London
Nottingham

Work Type

Remote-first

Experience Level

Senior

Benefits

25 days’ holiday + bank holidays
Option to buy or sell 5 extra annual leave days per year
Vitality Health Insurance, including private healthcare, virtual GP access, mental-health support and wellbeing perks (50% off gym memberships - Virgin Active, Nuffield, PureGym)
Pension with 5% matched contribution
Regular team-wide and company-wide events
2 volunteering days per year to give back

About the Company

ENSEK builds the cloud‑native SaaS software that’s transforming how energy retailers operate, innovate and manage at scale.
We help retailers lower operating costs, improve billing accuracy for consumers, and enhance customer experience through automation and AI‑driven insight, all underpinned by modern, cloud‑native architecture.
ENSEK is at an exciting inflection point as we scale at pace towards new international horizons.
If you’re driven by solving complex, real‑world problems and want to build reliable, resilient infrastructure that accelerates the global energy transition, you’ll feel right at home with us.