Job Detail

Junior Java Software Engineer

Others Full–time
ID: #15278
Posted: 2026-03-17
Salary

Description

Java Software Engineer – Data Engineering Up to £70,000 + bonus and benefits 4:1 hybrid in office – City of London Quant Capital is hiring for a small, high-performing market maker in London. This is a junior-to-mid role focused primarily on Java development, with a secondary responsibility owning straightforward Python ETL/data ingestion into AWS and PostgreSQL. This is a growing team focused on data ingestion and building tooling for the wider firm. What you’ll do: • Build and enhance Java backend services (APIs, batch jobs, integrations) used across the business • Write clean, testable code with solid engineering discipline (testing, code review, debugging, production support) • Maintain and extend Python-based ingestion/ETL (pragmatic plumbing, not heavy data engineering) • Work with PostgreSQL (schemas, migrations, performant queries, data validation) • Improve service reliability: monitoring/logging, sensible alerting, and predictable deployments via CI/CD Tech: Java (primary), Python (secondary), AWS, PostgreSQL + Git, CI/CD, logging/monitoring What they want: • 2–5 years of experience building production systems (or equivalent ability) • Strong Java fundamentals (OO design, APIs/services, concurrency basics, testing) • Some UI development • Comfortable with SQL/PostgreSQL • Some Python experience (enough to manage and improve existing ETL/ingestion) Nice to have • Any finance or markets exposure • Familiarity with common AWS patterns for running services and pipelines Why this role • Broader scope than pure app dev: you’ll understand the data feeding the platform • Lean team, high impact, strong growth runway My client is based London. Home work is encouraged but you will need to be able to come to the City if needed.

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Query Country Status Response ms Created
Junior Java Software Engineer fallback 404 2026-03-21 21:41
junior data engineer in London gb duplicate 15507 2026-03-21 17:39
junior data engineer in United Kingdom gb processed 16228 2026-03-21 17:39
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