Senior Site Reliability Engineer

Prima; Greater London; Hybrid; GBP 110,000 - 140,000; Full time

Benefits offered by this job

Private healthcare

Gym discounts

Wellbeing programs

Mental health support

Flexible work location

Job summary

Prima in London is seeking a Senior Site Reliability Engineer to join the Infrastructure team. You will design, build and operate reliable, scalable systems, partnering with software engineers to improve reliability and performance.

We offer flexible work options—remote, office, or hybrid—and opportunities to work with Datadog, PySpark, and modern cloud architectures. You will help shape capacity, security, and efficiency across production systems.

Qualifications

• Hands-on SRE in production with strong AWS, Kubernetes, and IaC experience.
• Solid Python skills and a broad Python ecosystem understanding (testing, debugging).
• Ability to lead incident response, RCAs and drive improvements in code and tooling.

Responsibilities

• Design, build, and operate reliable, scalable systems by defining and monitoring SLOs/SLIs, collaborating with software engineers.
• Automate infrastructure and operational workflows, lead incident response, drive blameless post-incident reviews with code/tooling fixes.
• Analyze performance and capacity, support security practices and remediation with data-driven recommendations.

Skills

SRE practices in production

AWS

Kubernetes

Networking

DNS

Infrastructure as Code

Pulumi

Terraform

Python

Tools

Datadog

PySpark

Cloudflare

RabbitMQ

Kafka

PostgreSQL

Redis

Terraform

Job description

Are you looking for a new challenge?

Fancy helping us shape the future of motor insurance?

Prima could be the place for you.

Since 2015, we’ve been using our love of data and tech to rethink motor insurance and bring drivers a great experience at a great price.Our story began in Italy, where we’ve quickly become the number one online motor insurance provider. In fact, we’re trusted by over 5 million drivers. And now we’re expanding to help millions more drivers in the UK and Spain.

To help fuel that growth, we need a Senior Site Reliability Engineer (SRE) to join ourInfrastructure team.

This team is the beating heart of Prima.

You’ll be joining over +350 engineers across software development, infrastructure, operations and security. Fueled by curiosity, experimentation and collaboration, you’ll help deliver scalable, impactful solutions that shape the future of insurance.

Excited to make an impact? Here are the details

What you’ll do

• Hands-on Reliability & System Engineering: Design, build, and operate reliable and scalable systems by defining and monitoring SLOs/SLIs, working directly on production infrastructure, and collaborating closely with software engineers on system design and reliability improvements
• Automation, Operations & Incident Response: Actively develop automation for infrastructure and operational workflows to eliminate toil and reduce MTTR, participate in and lead incident response, and drive blameless post-incident reviews with concrete follow-ups implemented in code and tooling
• Performance, Capacity & Security: Continuously analyze and optimize system performance and cost, provide data, insights, and recommendations to inform capacity planning, and support security best practices through hands‑on vulnerability remediation and threat mitigation

What we’re looking for

• SRE & Cloud Engineering: Hands‑on experience with SRE practices in production, strong AWS expertise, Kubernetes, networking, DNS, and Infrastructure as Code (Pulumi preferred, Terraform a plus)
• Automation & Software Engineering: Demonstrate strong software engineering fundamentals with an emphasis on code quality and maintainability. This includes solid Python proficiency and deep knowledge of the Python ecosystem (testing, debugging, packaging) and a consistent focus on writing clean, well-structured, and maintainable code
• Reliability, Data & Operations: add stakeholder engagement and mentoring e.g. lead incident response and RCAs, improve system reliability, and engage stakeholders to propose solutions, share learnings, and mentor others

Nice-to-Have

• Regulated Environments & Security: Experience operating in highly regulated industries (e.g. Insurance, Banking, Healthcare), managing sensitive data, and supporting secure networking setups, including exposure to security technologies such as Cloudflare
• Distributed Systems & Microservices: Strong understanding of microservices architectures, their principles and trade-offs, with the ability to troubleshoot and maintain distributed systems and supporting technologies (RabbitMQ, Kafka, PostgreSQL, Redis)
• Observability, Data and MLOps: Hands‑on experience with Datadog for platform and application monitoring, performance optimisation, and solid fundamentals in database structures and operational troubleshooting. Hands‑on experience with PySpark and familiarity with MLOps practices including model registries, versioning, retraining workflows, and deployment lifecycles

Why you’ll love it here:

• Work Your Way: Enjoy full flexibility – work from home, the office or a mix of both. Plus, work from anywhere for up to 30 days a year.
• Grow with us: We may move fast at Prima, but we move together. Get access to learning resources, mentorship and a growth plan tailored to you.
• Thrive and perform: Your best work begins when you feel your best. Enjoy private healthcare, gym discounts, wellbeing programs and mental health support.

At Prima, we celebrate uniqueness. If you don’t meet every requirement but are passionate about this role, we still want to hear from you. Innovation thrives on diverse perspectives.

Prima is proud to be an equal opportunity employer. Need accommodations during the process? Email us at ----- Let’s build the future of insurance, together.