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Full timeTechnology

Senior Java Developer

eFinancialCareers Sourcing ServicesLondon🇬🇧United Kingdom

Why this role stands out

Elevate your career by joining a high-impact engineering team where you will master cloud-native infrastructure, AI integration, and complex capital markets systems within a supportive, collaborative culture. This hybrid role is perfect for a skilled developer who thrives on solving intricate technical challenges and is ready to mentor others while advancing their expertise in a top-tier financial technology environment. Apply today to play a pivotal role in shaping the future of advanced trading platforms.

Quick overview

SeniorityMid Senior
Employment typeFull Time
Work modeHybrid
LocationLondon, United Kingdom
GCPMicroservicesSpringSpring BootGitAWSTDDBDDGroovyJUnitJavaJenkinsLLMTerraformRESTAzureAgileCI/CDAzure DevOpsMavenMockito

Job description

Role Overview

Our client is seeking a talented Senior Java Developer to join our engineering team and play a central role in building and evolving our post-trade technology platform. You will work on in-house systems, APIs, client reporting and web portal, as well as customising our third-party trading system. Working closely with Client Services and Product Management, you will translate complex business requirements into scalable, high-quality software solutions.

This is an opportunity to deepen your expertise in a capital markets environment while taking on mentoring responsibilities, with direct exposure to cloud-native infrastructure, advanced Java development, AI and a highly collaborative engineering culture.

Key Responsibilities

Software Development

  1. Design, develop and maintain in-house systems, APIs, reporting tools and the client web portal
  2. Use AI in the SDLC process
  3. Customise and extend third-party trading systems to meet business requirements
  4. Write clean, well-tested code following SOLID principles, Design Patterns and Clean Code practices
  5. Apply TDD and BDD methodologies; maintain test coverage using JUnit, Spock and Mockito
  6. Participate in code reviews and contribute to continual improvement of engineering standards

Collaboration & Communication

  1. Liaise with Client Services and Product Management to understand requirements and propose solutions
  2. Communicate clearly with IT professionals and non-technical stakeholders at all seniority levels
  3. Break down complex problems, identify root causes and prioritise resolution effectively

Mentoring

  1. Mentor a team of Java (and other) developers, supporting growth and career development
  2. Drive a culture of quality, ownership and continuous improvement within the team
  3. Work alongside offshore developers as needed, maintaining clear communication across time zones

Skills & Experience

Essential

  1. 7+ years’ Java development experience at a financial services company
  2. Java 11+, Spring/Spring Boot, multi-threading, profiling, performance tuning, RMI
  3. Capital markets knowledge (e.g. post-trade or brokerage services)
  4. Experience in high-quality software practices: TDD, Agile, automated builds/deployments
  5. Strong knowledge of CI build and deployment management tools
  6. Experience with test frameworks (JUnit/Spock) and mocking libraries (e.g. Mockito)
  7. Proficiency with Git and Maven
  8. Microservices knowledge
  9. Understanding and application of SOLID, Design Patterns, Clean Code and TDD
  10. Able to work and communicate effectively with IT professionals and end users at all levels
  11. Able to liaise with the business to understand requirements and present solutions clearly
  12. Able to take complex issues, identify root causes and prioritise resolution

Desirable

  1. Experience leading a team of developers
  2. Working knowledge of Groovy, FpML, FIX, FIXML, JSON, REST, Message Queuing
  3. Experience building client reporting and web portals
  4. Experience working with global teams

Technical Competencies

The role requires strong hands-on Java expertise complemented by modern cloud and DevOps practices:

Architecture & Infrastructure

  1. Cloud platforms (AWS, Azure or GCP)
  2. Microservices and event-driven architectures
  3. Infrastructure as Code (Terraform)
  4. API design and integration patterns

Delivery & Quality

  1. CI/CD toolchains (GitHub, Azure DevOps, Jenkins)
  2. Automated testing and TDD/BDD
  3. Observability, monitoring and incident response

Security & Compliance

  1. Secure SDLC and shift-left security practices
  2. Data privacy and regulatory compliance
  3. Identity, access management and zero-trust

Emerging Technology

  1. AI/ML tooling and LLM integrations
  2. Developer productivity tooling and automation
  3. Platform engineering and developer experience

Learning Potential

This role offers significant depth of exposure across both domain knowledge and technology:

Business Domain

  1. Post-trade services and collateral management
  2. Derivatives across OTC and exchange-traded markets
  3. Client presentations and prospect engagement

Technology Platform

  1. Fully cloud-based infrastructure
  2. AI services integration
  3. Modern developer tooling and automation

What We Offer

  1. Competitive base salary with performance-related bonus
  2. Private healthcare, pension, life assurance and critical illness insurance
  3. A leadership team that values engineering as a core business differentiator

eFCSoSe

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