Hybrid Backend Engineer: Java/Kotlin, Release & SDLC

Citi; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

27 days annual leave

Discretionary annual bonus

Private Medical Care & Life Insurance

Employee Assistance Program

Pension Plan

Paid Parental Leave

Special employee discounts

Job summary

Citi is seeking a Server-Side Engineer to join the Chief Technology Office, building strategic internal platforms used by over 30,000 engineers globally. You will develop scalable backend services, automate release processes, and influence architecture in an agile environment.

This hybrid London role offers exposure to modern engineering practices and AI-powered developer tools. Join Citi London for a technical, collaborative role in a technology-led team.

Qualifications

• Strong commercial experience with Java (21+) or Kotlin.
• Experience building RESTful APIs and backend services.
• Knowledge of relational and/or NoSQL databases (PostgreSQL, MongoDB or Couchbase).
• Experience delivering production-grade software in Agile teams.
• Excellent communication and collaboration skills.

Responsibilities

• Design, build and maintain high-quality backend services.
• Develop APIs and microservices that support strategic engineering platforms.
• Contribute to architecture and technical design decisions.
• Collaborate with engineers, product teams and stakeholders across global locations.
• Champion engineering best practices, code quality and automation.
• Explore and apply emerging AI technologies to improve products and developer experience.

Skills

Java / Kotlin

REST APIs

Databases (SQL/NoSQL)

Agile development

Communication

Tools

Docker

Kubernetes

CI/CD

Spring Boot

OpenShift

Kafka

Cloud-native

Job description

Citi is seeking a Server-Side Engineer to join the Chief Technology Office, building strategic internal platforms used by over 30,000 engineers globally. You will develop scalable backend services, automate release processes, and influence architecture in an agile environment.

This hybrid London role offers exposure to modern engineering practices and AI-powered developer tools. Join Citi London for a technical, collaborative role in a technology-led team.