Backend Java Developer – Data Fabric, Platform Engineering

Job not on LinkedIn

🕒 March 18

🏢🏡 London – Hybrid

💵 £70k - £90k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

🔙 Backend Engineer

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Nextwave

WebsiteLinkedInAll Job Openings

1 - 10 employees

Founded 2009

🛍️ eCommerce

🏪 Marketplace

🌐 Web 3

eCommerce • Marketplace • Web 3

Nextwave is a domain provider that offers a variety of domains for purchase. The company focuses on providing quality domain names and services, allowing customers to easily acquire their desired online identity.

📋 Description

• Build core backend services in Java (17/21) for access control and query manipulation • Implement deterministic policy / rule engines for data governance • Work on SQL parsing, planning, validation, and transformation (e.g., Calcite or similar planners) • Integrate with distributed data platforms / query engines (e.g., Starburst or similar) • Own API contracts with living documentation in CI/CD • Build production-grade, testable pipelines • Drive observability, reliability, and performance • Contribute to architecture decisions (modularity, DI, extensibility)

🎯 Requirements

• Strong hands-on experience in Java (17/21) + Spring • Deep understanding of JDBC, SQL parsing/validation, query planning/optimization • Experience with SQL planners or query transformation layers • Strong grounding in data structures, algorithms, and backend performance • Production-grade testing using JUnit 5, Mockito • Experience with clean architecture, DI, modular design • Comfortable owning CI/CD, code quality, observability • Familiarity with Docker, Maven, Jenkins