Full-Stack Tech Lead & Platform Architect

Citigroup Inc.; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Citigroup Inc. in London seeks an experienced full-stack architect to design, build, and scale cloud-native platforms across data, risk, and finance domains. You will collaborate with architecture and engineering teams to deliver resilient solutions and improve platform capabilities.

The role emphasizes hands-on development, system design, and leadership in a global, matrix environment with OpenShift, Docker, Kubernetes, AWS/GCP, and a focus on secure, maintainable code.

Qualifications

• Experience in Application Development or systems analysis.
• Proven engineering experience building robust, scalable, and maintainable applications in Financial Services.
• Experience with full stack development across UI and backend layers.
• Strong knowledge of API design and microservices.
• Hands-on experience with OpenShift, Docker, Kubernetes.
• Familiarity with cloud platforms (AWS/GCP) and CI/CD tooling.

Responsibilities

• Write code on one or more development platforms to deliver part or all of a feature, collaborating with Enterprise Architect and Senior engineers.
• Respond to problems and influence development outcomes using appropriate technology.
• Define inputs to feasibility studies, estimates, and implementation of new/revised applications systems.
• Develop, design, test, and implement secure, maintainable code.
• Engage in digital applications development and analytics support to meet business needs.
• Participate in design sessions and provide inputs for design decisions.

Skills

Full stack development

React

Node.js

Java

Kotlin

Microservices

API Development

Docker

Kubernetes

OpenShift

Education

Bachelor’s degree

Tools

AWS

GCP

Job description

Citigroup Inc. in London seeks an experienced full-stack architect to design, build, and scale cloud-native platforms across data, risk, and finance domains. You will collaborate with architecture and engineering teams to deliver resilient solutions and improve platform capabilities.

The role emphasizes hands-on development, system design, and leadership in a global, matrix environment with OpenShift, Docker, Kubernetes, AWS/GCP, and a focus on secure, maintainable code.