Java Developer

Ports North; Greater London; Hybrid; GBP 80,000 - 100,000; Part time

Job summary

A tech firm in London is seeking an experienced Java Developer with AI integration skills to design and maintain backend services. You will work on AI-powered features and optimize performance. The ideal candidate has strong Java skills and experience with AI-assisted development tools. This initial 3-month engagement offers £500/day and requires working one day a week in the London office.

Qualifications

• Proficiency in Java 8+ with understanding of OOP and design patterns.
• Experience with Spring/Spring Boot and RESTful API development.
• Hands-on experience with AI/LLM solutions integration.

Responsibilities

• Design and develop Java-based backend services.
• Build AI-powered features using LLMs.
• Optimize application performance and reliability.

Skills

Java programming

AI-assisted development tools

RESTful API development

Spring Framework

OOP and design patterns

Tools

Claude

Cursor

PostgreSQL

MySQL

MongoDB

Job description

Java Developer with AI experience to build, integrate, and scale intelligent applications. The ideal candidate has strong Java backend skills and hands‑on experience working with AI‑assisted development tools such as Claude or Cursor, as well as integrating AI/LLM capabilities into real‑world systems.

You will collaborate with product, data, and engineering teams to deliver high-quality, AI‑enabled solutions that are scalable, secure, and production‑ready.

Key Responsibilities

• Design, develop, and maintain Java‑based backend services and APIs

• Build and integrate AI‑powered features using LLMs and related services

• Leverage AI coding tools (Claude, Cursor, or similar) to accelerate development and improve code quality

• Integrate AI services via REST APIs, SDKs, or custom pipelines

• Optimize application performance, scalability, and reliability

• Write clean, maintainable, and well‑documented code

• Participate in code reviews, architecture discussions, and technical decision‑making

• Collaborate closely with cross‑functional teams to translate business requirements into technical solutions

Required Qualifications

• Strong proficiency in Java (Java 8+), with solid understanding of OOP and design patterns

• Experience with Spring / Spring Boot and RESTful API development

• Hands‑on experience integrating AI/LLM solutions into applications

• Practical experience using Claude, Cursor, or similar AI‑assisted development tools

• Familiarity with prompt engineering and AI‑assisted workflows

• Experience with relational and/or NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB).

This is an initial 3 month engagement working one day a week in the client's London office paying £500/day Outside IR35

About Korn Ferry

Korn Ferry unleashes potential in people, teams, and organizations. We work with our clients to design optimal organization structures, roles, and responsibilities. We help them hire the right people and advise them on how to reward and motivate their workforce while developing professionals as they navigate and advance their careers. To learn more, please visit Korn Ferry at www.Kornferry.com