Senior DevOps Engineer - Hybrid (3/2) | Kubernetes & CI/CD

Citigroup Inc.; Belfast City District; On-site; GBP 75,000 - 110,000; Full time

Benefits offered by this job

Hybrid work model

Modern tech stack exposure

Autonomy in decisions

Learning & development programs

Competitive compensation package

Wellbeing & family support

Job summary

Citi is seeking a Senior DevOps Engineer to join its Technology team in Belfast, delivering scalable CI/CD pipelines, container orchestration with Kubernetes/OpenShift, and robust observability using Splunk, Prometheus, and Grafana. You will guide junior engineers, ensure security across the software delivery lifecycle, and collaborate with cross-functional teams to meet business needs.

The role offers a hybrid work model with in-office and remote days, exposure to a broad modern stack, and

Qualifications

• 4 to 8 years of experience in software engineering, systems development, or DevOps with demonstrated delivery in complex technical environments.
• Hands-on experience with CI/CD tooling, including Git-based workflows, pipeline configuration, and automated build and deployment processes.
• Practical knowledge of Kubernetes and OpenShift for container orchestration, including Helm chart development and cluster management.
• Working knowledge of Linux administration and shell scripting to support automation, system configuration, and operational tasks.
• Experience delivering and managing software projects end-to-end, from planning and design through to testing and production deployment.
• Ability to work autonomously in a fast-paced environment, managing competing priorities and adapting to changing technical or business requirements.
• Bachelor's degree in a relevant field or equivalent practical experience.

Responsibilities

• Design and implement CI/CD pipelines using Git, Tekton, and Harness to accelerate and standardize software delivery across engineering teams.
• Build and manage containerized workloads on Kubernetes and OpenShift using Helm, ensuring systems are scalable, reliable, and production ready.
• Architect and maintain observability solutions — including log aggregation with Splunk and Elastic/Kibana, and metrics monitoring with Prometheus and Grafana — to give engineering teams real-time visibility into system health.
• Evaluate complex technical problems across application systems, business processes, and delivery pipelines, and develop engineering solutions that meet specific business requirements.
• Collaborate with development teams, business users, and technology stakeholders to define operating standards, resolve technical issues, and recommend engineering improvements.
• Develop and enforce security measures across the software delivery lifecycle, ensuring system design supports compliance with applicable policies and technical standards.
• Act as a technical authority for junior and mid-level engineers, providing guidance, code review, and hands-on support to elevate team capability.

Skills

CI/CD tooling

Kubernetes

OpenShift

Linux scripting

Git workflows

End-to-end delivery

Autonomy

Problem solving

Education

Bachelor's degree

Tools

Tekton

Harness

Helm

Prometheus

Grafana

Splunk

Elastic/Kibana

AppDynamics

Datadog

Job description

Citi is seeking a Senior DevOps Engineer to join its Technology team in Belfast, delivering scalable CI/CD pipelines, container orchestration with Kubernetes/OpenShift, and robust observability using Splunk, Prometheus, and Grafana. You will guide junior engineers, ensure security across the software delivery lifecycle, and collaborate with cross-functional teams to meet business needs.

The role offers a hybrid work model with in-office and remote days, exposure to a broad modern stack, and