Backend Java Engineer

Java Engineer – Backend & Search Platform

Location: London, UK

**PLEASE NOTE SPONSORSHIP IS NOT PROVIDED FOR THIS ROLE - MUST HAVE FULL RIGHT TO WORK IN THE UK **

About the Role

You’ll be working on a large‑scale backend platform that powers advanced search, data processing, and high‑performance API experiences. The environment involves significant volumes of structured and unstructured data, low‑latency requirements, and distributed systems operating at scale. The work spans backend services, search capabilities, data ingestion, and graph‑driven features. You’ll contribute to systems that must remain fast, resilient, and highly available.

What You’ll Work On

Build and maintain backend services using Java / Spring
Design and optimise APIs using GraphQL and REST
Develop search functionality using Elasticsearch
Work with large‑scale data models across multiple storage technologies
Contribute to ingestion pipelines that process high‑volume datasets
Improve platform performance, reliability, and observability
Integrate semantic or ML‑driven components into backend services
Deploy and operate services in AWS using modern cloud toolingKey Tech Stack

Java 17+
Elasticsearch / GraphQL
AWSWho You Are

Strong Java engineer with experience building distributed backend systems
Comfortable with Elasticsearch (indexing, querying, relevance)
experience with GraphQL or graph‑oriented APIs
Familiar with AWS cloud environments
Understands data modelling across document, graph, and key‑value stores
Enjoys solving complex search and data‑intensive engineering problems
Works well in cross‑functional engineering environments

Job Title: Backend Java Engineer

Location: London, UK

Job Type: Contract

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