Lead Software Engineer - Hybrid | Java/AWS, AI & Architecture

SR2 REC LTD; Greater London; Hybrid; GBP 90,000 - 110,000; Full time

Job summary

SR2 REC LTD is partnering with a FinTech business building a product that simulates what it’s actually like to work in trading, banking and quantitative finance. They’re seeking a Lead Software Engineer who still enjoys coding and will lead a small team in London two days a week.

You will write Java/Spring Boot code, help shape system design and architecture, and work with AWS, Kafka, and AI tooling on distributed, real-time services.

Qualifications

• Must have Java/Spring Boot expertise.
• Strong AWS experience.
• Kafka and distributed systems experience.
• Proven ability in system design and microservice architecture.
• Experience with AI tooling in software development.

Responsibilities

• Write Java/Spring Boot code several weeks.
• Lead, support and unblock a small engineering team.
• Make architecture decisions with CTO/Principal Engineer.
• Work with distributed systems, event-driven services, APIs and AWS.
• Improve CI/CD, testing and releases processes.
• Collaborate across Docker and React/TypeScript and real-time tech.
• Experiment with AI coding agents in the build process.

Skills

Java/Spring Boot

AWS

Kafka

System Design & Microservice

AI tooling experience

React/TypeScript

GDPR knowledge

Tools

Docker

Job description

SR2 REC LTD is partnering with a FinTech business building a product that simulates what it’s actually like to work in trading, banking and quantitative finance. They’re seeking a Lead Software Engineer who still enjoys coding and will lead a small team in London two days a week.

You will write Java/Spring Boot code, help shape system design and architecture, and work with AWS, Kafka, and AI tooling on distributed, real-time services.