Senior Site Reliability Engineer

Cynergy Bank; City Of London; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A challenger bank in London seeks a Senior Site Reliability Engineer to ensure system security and performance. You will play a crucial role in supporting applications and improving cloud infrastructure across various platforms. The ideal candidate has significant experience in cloud roles, advanced technical skills, and proven leadership ability. Benefits include a competitive salary, bonus, and comprehensive holiday allowance.

Benefits

Competitive salary and company bonus

Competitive holiday allowance plus bank holidays

Option to purchase an additional 10 days holiday

Pension contribution and life assurance

Income protection scheme and season ticket loan

Medical cover (after probation)

Electric car scheme and money coach (after probation)

Qualifications

• 10+ years in cloud infrastructure roles (hybrid/public).
• Advanced knowledge of Python, Bash, Kubernetes, Docker.
• Proven leadership in incident resolution and performance.
• Experience of successfully leading a team.

Responsibilities

• Support customer and internal applications, finding and dealing with incidents.
• Accountable for cloud infrastructure delivery across multiple clouds.
• Work within Agile and ITILv4 environments to improve efficiency.
• Lead incident management and post-incident analysis.
• Design scalable, secure cloud infrastructure (AWS, Terraform).
• Coach engineers and contribute to career path progression.

Skills

Cloud infrastructure roles

Python

Bash

Kubernetes

Docker

Job description

Join a challenger bank building the future of financial reliability. We're hiring a Senior Site Reliability Engineer (SRE) to help ensure our systems stay secure, scalable, and fast, so customers never miss a beat. You'll gain hands‑on experience with modern cloud tech while contributing to a purpose‑led organisation. We are at the early stages of a fantastic cloud‑first transformation journey, on our way to building a human‑digital bank. We have already built and launched a mobile banking app and brand‑new banking website, and still have more to do, which is where you come in! We are looking for a motivated team of people to help us create, shape and run a modern infrastructure and support function for all our cloud‑based technologies. This function will be at both the forefront of customer and technology interactions and problem solving, and the cutting edge of automation, reporting, trend analysis, shift left and AI integration for customers (internal and external support). If you are customer‑orientated, cloud‑first, cutting‑edge true IAC, automated deployment, detection and reporting is your wheel‑house – this is the role for you. Operating as part of a team, you will have the opportunity to learn and grow with senior engineers and cloud experts, offering opportunities to grow fast and make a real impact. We are looking for people with a collaborative, growth mindset who want to commit and help grow our capability. This team makes a difference every day of the year, we're proud of that, and will strive to contribute more.

Responsibilities

• You will be part of a groundbreaking team supporting customer and internal applications, finding and dealing with incidents and bridging the gap between engineering and testing to drive improvement and fixes.
• You will be accountable for cloud infrastructure delivery (design, build, deploy and test) to service projects and production environments across multiple clouds (GCP, AWS, Azure).
• You will also be moving towards a gold standard of design documentation and support collateral to deliver a balanced set of controls to support the environmental standards.
• You will be working within both Agile and ITILv4 environments and improving efficiency for deployment and management.
• You will contribute to strategic projects/initiatives and influence the outcome, as well as being accountable for Infrastructure delivery.
• You will operate in a hybrid role (DevOps/SRE and Apps support) working directly with internal users to resolve issues and improve/shift‑left and introduce automation.
• You will represent the support function on Change Advisory Boards and incident management calls.
• You will be introducing single‑pane‑of‑glass and transparent observability, monitoring and alerting in a continual improvement regime.
• Lead incident management and post‑incident analysis.
• Design scalable, secure cloud infrastructure (AWS, Terraform).
• Lead and manage teams to achieve the organization goals.
• Coach engineers and support platform strategy.
• Contribute to career path progression improvements.
• Lead on system enhancement and shift left support.
• Represent the team within architecture, security, and Engineering forums.
• Lead stand‑ups and scrums.
• Identify process and system improvements.

Qualifications

• 10+ years in cloud infrastructure roles (hybrid/public)
• Advanced knowledge of Python, Bash, Kubernetes, Docker
• Proven leadership in incident resolution and performance
• Experience of successfully leading a team

Desirable Knowledge & Experience

• Experience in financial services or regulated environments is a plus

Cynergy Bank is the UK's human digital bank serving the needs of 'scale up' or medium sized and fast‑growing SMEs; professionals; high net worth and mass affluent individuals, in essence those market segments that still value human service enabled by great technology. We recognise that professional and personal lives often overlap and our mission is to help empower our customers to achieve their ambitions by serving all their interdependent banking needs. We provide a comprehensive range of digitally enabled products and services to meet the property finance, business and commercial banking, private banking and personal savings needs of our customers. Our human and digital model transforms banking for customers who still value a face‑to‑face relationship that is enabled by the latest digital technology. We partner with firms such as Google Cloud, Cigniti and Slalom as we continue to innovate in the human digital space.

• Competitive salary and company bonus
• Competitive holiday allowance plus bank holidays
• Option to purchase an additional 10 days holiday
• Pension contribution and life assurance
• Income protection scheme and season ticket loan
• Medical cover (after probation)
• Electric car scheme and money coach (after probation)