Staff Engineer Java Spring Boot AWS

Client Server; Greater London; Hybrid; GBP 100,000 - 120,000; Full time

Benefits offered by this job

Pension

Life Assurance

Income Protection

Private medical care

Travel Insurance

Charitable giving

Gym membership

Job summary

Client Server is seeking a Staff Engineer / Principal Software Developer in London. Hybrid WFH to £120k.

You will lead the design and delivery of high impact technology projects, modernise legacy systems, migrate to AWS, and introduce modern CI/CD and cloud deployment practices, balancing hands-on coding with technical leadership. You’ll work alongside a collaborative team, enjoy problem solving, and engage with financial services clients to shape architecture, ensure quality, and deliver

Qualifications

• Experience in financial services or Fintech environments.
• Strong Java development with multithreading and concurrency.
• Experience with Spring Boot and microservices.
• Good knowledge of REST APIs.
• Strong AWS knowledge.
• Solid understanding of OOP, data structures and design patterns.
• Familiar with DevOps and CI/CD pipelines.
• Collaborative and client-facing.

Responsibilities

• Lead technical projects and client engagements from design through delivery.
• Develop scalable Java applications using Spring Boot and microservices.
• Modernise and migrate legacy systems to AWS.
• Design REST APIs and distributed systems.
• Introduce and improve CI/CD and DevOps practices.
• Provide technical expertise and guidance to clients and engineering teams.

Skills

Java

Spring Boot

Microservices

REST APIs

AWS

CI/CD

DevOps

Multithreading

OOP

Data Structures

Design Patterns

Client engagement

Tools

AWS

Job description

Staff Engineer / Principal Software Developer (Java Spring Boot AWS) London / WFH to £120k

Are you an experienced Staff Engineer who enjoys taking technical ownership, leading projects and working directly with clients?

You could be progressing your career at a global technology consultancy, working on complex, long-term transformation projects, primarily within the financial services sector.

As a Staff Engineer, you'll lead the design and delivery of high impact technology projects, helping clients modernise legacy systems, migrate to AWS and introduce modern CI/CD and cloud deployment practices. You'll combine hands-on engineering with technical leadership, problem solving and client engagement.

You'll work alongside a highly collaborative team focused on engineering excellence, continuous improvement and delivering meaningful outcomes for clients.

What you'll be doing:

• Leading technical projects and client engagements from design through to delivery
• Developing scalable Java applications using Spring Boot and microservices
• Modernising and migrating legacy systems to AWS
• Designing and working with REST APIs and distributed systems
• Introducing and improving CI/CD and DevOps practices
• Providing technical expertise and guidance to clients and engineering teams

Location / WFH:

There's a hybrid work from home policy with three days a week in the London, City office (or at client sites), you'll join a friendly, diverse, upbeat team.

About you

• You have experience within a financial services or Fintech environment
• You have strong Java development skills including multi-threading and concurrency
• You have experience with Spring Boot and microservices environments
• You have a good knowledge of REST APIs
• You have a good understanding of AWS
• You have a thorough understanding of software development and Computer Science fundamentals such as Object Oriented Programming, Data Structures and Design Patterns
• You are familiar with DevOps, CI/CD pipelines
• You're collaborative, enjoy problem solving and interacting with clients

What's in it for you:

As a Staff Engineer / Principal Software Developer you will earn a highly competitive package:

• Salary to £120k
• Pension, Life Assurance, Income Protection
• Private medical care for you and your family, including mental health
• Travel Insurance
• Charitable giving
• Gym membership for you and your family