Senior Site Reliability Engineer

Build resilient, high‑performing cloud platforms at Cynergy Bank.

Join us as a Senior Site Reliability Engineer and play a hands‑on role in building, operating and improving the reliability, availability and performance of Cynergy Bank’s cloud‑native platforms and services. You will work at the heart of our technology estate, helping ambitious businesses and individuals achieve their goals through our award‑winning human digital banking model.

What’s the opportunity?

This is a senior, delivery‑focused Site Reliability Engineering role within our Cloud Infrastructure function. You will have shared ownership for the reliability and performance of our production platforms, working closely with software engineers, platform teams and security colleagues to ensure systems are resilient, observable and well‑run in live environments.

This role is deliberately hands‑on. It is not a principal or strategy‑only position, but a key engineering role focused on operational excellence, automation and continuous improvement.

Our Technology Environment

Our platforms are built on Google Cloud Platform (GCP), with Kubernetes (GKE) at the core. We use Infrastructure as Code (Terraform) to manage environments and place a strong emphasis on automation, observability and production reliability across our services.

Where You Will Work

You will enjoy hybrid working, with 3 days based in our Central London office and 2 days working remotely.

Why Join Us?

At Cynergy Bank, we know the best people want more than just a job. Here, you will find:

• Impact: Direct influence over the reliability, availability and performance of our core banking platforms.

• Growth: A culture that values curiosity, pragmatic engineering and continuous improvement.

• Flexibility: Hybrid working and a sensible approach to work‑life balance.

• Purpose: Technology that genuinely supports customers and growing UK businesses.

How You Will Make an Impact

• Build and operate highly available cloud‑native platforms with a focus on resilience and fault tolerance.

• Identify and remove single points of failure across platforms and services.

• Respond to and resolve live production incidents as part of a shared on‑call rota.

• Lead or contribute to post‑incident reviews, identifying root causes and preventative actions.

• Improve observability through effective monitoring, alerting and logging.

• Support Kubernetes‑based workloads and associated tooling.

• Use Infrastructure as Code (Terraform) to deliver consistent, repeatable environments.

• Work collaboratively across engineering, platform and security teams to improve reliability and reduce operational risk.

What You Will Bring

• Strong hands‑on experience supporting production systems in a cloud environment.

• Practical experience operating containerised workloads using Kubernetes.

• Experience using Terraform or similar Infrastructure as Code tooling.

• Proven ability to troubleshoot and resolve complex system issues under pressure.

• A calm, methodical approach during incidents, with the ability to prioritise effectively.

• Clear communication skills and the ability to collaborate across technical and non‑technical teams.

• Experience within regulated or financial services environments is desirable.

How We Will Support You

We want you to do your best work, feel supported, and continue to grow your career with us. At Cynergy Bank, you can expect:

• A strong salary reflecting the impact of the role, plus an annual bonus opportunity aligned to company and personal performance

• 28 days annual leave, plus public holidays

• One additional day of leave to celebrate your birthday

• Pension contribution of 5% from Cynergy Bank, with a 4% employee contribution

• Private healthcare, life assurance and income protection

• Hybrid working, balancing collaborative time in our Central London office with flexibility to work remotely

• A strong focus on learning and self‑development, including access to training, development opportunities and regular development conversations

• Emergenetics profiling for all colleagues, supporting greater self‑awareness, stronger collaboration and better ways of working across teams

• Access to a wider benefits and wellbeing programme designed to support you both at work and beyond

Important eligibility information

To be eligible for this role, candidates must have the right to work in the UK at the time of application. We are unable to provide visa sponsorship for this position.

Who Are We?

Cynergy Bank is the UK’s human digital bank, combining personal service with smart technology to support ambitious individuals and businesses. Since 2018, we have lent over £4bn to scaling UK businesses and continue to invest in secure, modern and resilient technology to support our customers.

Our values guide everything we do: putting the customer first, keeping risk front and centre, empowering our people, working as one inclusive team, and always doing the right thing.

This advert outlines the main responsibilities and requirements of the role. A full job description will be shared with shortlisted candidates. We use anonymous screening at the first stage of recruitment, ensuring applications are assessed fairly and based on skills and experience.

Apply now to help shape the future of human digital banking at Cynergy Bank.