Junior Java Backend Engineer: Mentored Growth in Spring Boot

Citibank (Switzerland) AG; Hinoba-an; On-site; Confidential; Full time

Job summary

Citibank (Switzerland) AG is seeking a Junior Java Developer to collaborate with senior engineers on building new features, writing tests, debugging backend services, and maintaining core application APIs. You will receive mentorship, code reviews, and structured training in enterprise technologies like Spring Boot, cloud-native deployments, and distributed systems.

You will contribute to feature implementation, bug fixing, and code maintenance, while growing through hands-on practice and agile

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent self-taught/bootcamp portfolio).
• Solid understanding of Core Java (11+) and OOP concepts.
• Foundational SQL knowledge and basic query writing.
• Familiarity with Git workflows (cloning, branching, pulling requests).

Responsibilities

• Develop and maintain backend features and API endpoints as part of a Java-based stack.
• Write unit and integration tests using JUnit and Mockito.
• Debug, troubleshoot, and resolve issues in non-production and production environments.
• Participate in code reviews and adhere to coding standards.
• Collaborate in Agile ceremonies and contribute to continuous improvement.
• Learn and apply design patterns, system architecture, and modern backend methodologies.

Skills

Core Java

OOP

SQL

Git

JUnit

Education

Bachelor’s degree in CS/SE

Tools

Spring Boot

Spring MVC

Spring Data

Maven

Gradle

Docker

AWS

Job description

Citibank (Switzerland) AG is seeking a Junior Java Developer to collaborate with senior engineers on building new features, writing tests, debugging backend services, and maintaining core application APIs. You will receive mentorship, code reviews, and structured training in enterprise technologies like Spring Boot, cloud-native deployments, and distributed systems.

You will contribute to feature implementation, bug fixing, and code maintenance, while growing through hands-on practice and agile