Java Backend developer

Vallum Associates

Full-time IT & Technology
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Location
london, england, United-Kingdom
Posted
May 24, 2026

Job Description

We are looking for an experienced Backend Developer with strong Java skills to build and maintain scalable, high-performance backend services and APIs for a large microservices-based trading platform.

Key Responsibilities

  • Develop and maintain backend services and APIs using Core Java
  • Work on large-scale microservices and complex codebases
  • Design scalable solutions for high-volume data processing and calculations
  • Write and optimize SQL queries and database structures
  • Troubleshoot performance issues and improve system reliability
  • Build and maintain unit, integration, and API automation tests
  • Collaborate with DevOps, engineering leadership, and business stakeholders

Key Skills

  • 5+ years’ backend development experience with Core Java
  • Strong experience building scalable APIs
  • 2+ years’ experience with S...