Senior Java Developer (AWS +Kubernetes)

Mphasis; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Mphasis in London is seeking an experienced Senior Java Developer to lead a strategic migration program, modernizing applications onto a cloud-native stack.

The role combines hands-on engineering with architecture and domain knowledge in booking and movement management systems, and is on-site at Canary Wharf in London.

Qualifications

• Strong hands-on experience with Java 17, Spring Boot and microservices architecture.
• Proven ability to design scalable, distributed systems in cloud environments.
• Experience working in large migration/transformation programs.

Responsibilities

• Design and develop scalable microservices using Java 17 and Spring Boot.
• Participate in application modernization and migration to AWS cloud platforms.
• Deploy and manage containerized applications using Kubernetes.
• Work with MongoDB or similar NoSQL databases.
• Contribute to architecture discussions and ensure best practices.
• Collaborate with Agile feature teams to deliver critical capabilities.
• Understand and translate business requirements for bookings and movement workflows.
• Engage with stakeholders to align technical solutions with business needs.
• Provide technical leadership and mentorship to the development team.

Skills

Java 17

Spring Boot

Microservices

Kubernetes

NoSQL databases

Distributed systems

Agile teams

Job description

We are looking for an experienced Java professional to join a strategic migration program involving the modernization of existing applications onto a cloud-native technology stack. The role requires strong technical expertise, architecture understanding, and domain knowledge within booking and movement management systems. This role would suit a Senior Java Developer, Technical Lead, or Agile Technical Lead who can combine strong hands‑on engineering skills with architecture and domain understanding.

Mode: This is the on‑site position, 5 days a week work from office London (Canary Warf).

Responsibilities:

• Design and develop scalable microservices using Java 17 and Spring Boot.
• Participate in application modernization and migration to AWS cloud platforms.
• Deploy and manage containerized applications using Kubernetes.
• Work with MongoDB or comparable NoSQL databases.
• Contribute to architecture discussions and ensure adherence to best practices.
• Collaborate with Agile feature teams to deliver business‑critical capabilities.
• Understand, analyze, and implement requirements across booking and movement workflows.
• Engage with stakeholders to translate business requirements into technical solutions.
• Support integration with systems such as GIAA, FTPS, Booking Engine, Movement Engine, and Booking Instructions platforms.
• Provide technical leadership, mentoring, and guidance to the development team.

Must Haves:

• Strong hands‑on experience with Java 17, Spring Boot, and Microservices, 8+years of experience.
• Experience withKubernetes orchestration and containerization.
• Working knowledge of MongoDB or similar NoSQL databases.
• Experience in large‑scale migration or transformation programs.
• Strong understanding of distributed systems and solution architecture.
• Experience working within Agile feature teams.
• Ability to understand complex business domains and translate requirements into technical solutions.

Nice-to-Haves:

• Booking Engine
• Movement Engine
• Booking Instructions
• Operational workflow management
• End-to-end booking lifecycle and associated business processes