Mid Level Java Software Engineer – Data Engineering

Overview

In this role you will build and enhance Java-based backend services while owning pragmatic Python ETL ingestion for AWS and PostgreSQL. You’ll work within a lean, high-impact team focused on data ingestion and tooling for the wider firm, contributing to reliable services and scalable data pipelines. The role blends core Java development with data work, offering visibility into the data that feeds the platform. This is a hybrid London-based opportunity with a clear path to greater scope as the team grows.

Pay / Benefits

• up to 100,000 + bonus
• hybrid in-office (4:1)
• benefits
• growth runway
• lean team
• high-impact role

Responsibilities

• Build and enhance Java backend services (APIs, batch jobs, integrations) used across the business
• Write clean, testable code with engineering discipline (testing, review, debugging, production support)
• Maintain and extend Python-based ingestion/ETL
• Work with PostgreSQL (schemas, migrations, performant queries, data validation)
• Improve service reliability: monitoring/logging, alerting, and CI/CD deployments

Key requirements

• 2–5 years of experience building production systems
• Strong Java fundamentals (OO design, APIs/services, concurrency basics, testing)
• Some UI development
• Comfortable with SQL/PostgreSQL
• Some Python experience (manage and improve existing ETL/ingestion)

• Java
• Python
• AWS
• PostgreSQL
• Git
• CI/CD