Senior Java Backend Tech Lead – Cloud & Microservices

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

Job summary

Citi is seeking an experienced Senior Applications Developer to design, develop, and support enterprise applications. You will lead medium to large features, drive architectural best practices, and mentor junior engineers.

The role emphasizes core Java, Spring Boot, microservices, and cloud-native delivery with AI-assisted tooling to boost productivity and code quality. Strong collaboration with cross-functional teams is essential.

Qualifications

• 5+ years of application development experience.
• Strong hands-on experience in Core Java, Spring Boot, REST APIs, and Microservices.
• Familiarity with Git, CI/CD, testing frameworks, and Agile delivery practices.
• Experience mentoring developers and driving technical discussions.
• Strong analytical, problem-solving, and communication skills.
• Ability to independently lead technical initiatives with limited supervision.

Responsibilities

• Design, develop, and maintain scalable applications using Core Java, Spring Boot, REST APIs, and Microservices.
• Apply expertise in multithreading, concurrency, collections, transaction management, and distributed system design.
• Lead the technical design and implementation of medium to large-sized features and enhancements.
• Collaborate with business, product, architecture, and engineering teams to define and deliver technical solutions.
• Analyze, troubleshoot, and resolve complex application, performance, and production issues.
• Ensure adherence to secure coding standards, architectural principles, and engineering best practices.
• Drive code reviews, testing strategies, CI/CD adoption, and cloud-native engineering practices.
• Utilize AI-powered engineering tools and coding agents (e.g., Lightspeed, GitHub Copilot, Devin AI) to improve delivery efficiency and code quality.
• Apply Context Engineering and AI-first development practices to effectively leverage coding agents and automation throughout the SDLC.
• Mentor junior developers and provide technical guidance to team members.
• Act as a Subject Matter Expert (SME) for stakeholders and partner teams.
• Identify and implement opportunities for engineering productivity improvements and automation.
• Assess and manage technology risks while ensuring compliance with Citi policies and regulatory requirements.

Skills

Core Java

Spring Boot

REST APIs

Microservices

Multithreading

Concurrency

SQL / RDBMS

Cloud fundamentals

CI/CD

Testing

Agile delivery

Mentoring

Tools

Git

CI/CD

Docker

Kubernetes

OpenShift

Lightspeed

GitHub Copilot

Devin AI

Job description

Citi is seeking an experienced Senior Applications Developer to design, develop, and support enterprise applications. You will lead medium to large features, drive architectural best practices, and mentor junior engineers.

The role emphasizes core Java, Spring Boot, microservices, and cloud-native delivery with AI-assisted tooling to boost productivity and code quality. Strong collaboration with cross-functional teams is essential.