Java jobs in United Kingdom

Fanatics Betting & Gaming (FBG) is building the industry’s most trusted, scalable, and fan‑centric sportsbook experience. Our Internal Platforms power critical systems that support customer operations, marketing, support, risk, and data—through a combination of Java backend services, APIs, event‑driven systems, and Salesforce platform capabilities.

We are seeking a Software Engineer III with strong Java backend experience to build and maintain scalable services that power our internal platforms. This role is primarily backend‑focused, with opportunities to contribute to user‑facing internal tools as needed.

Experience with Salesforce development and integrations is a strong plus, as many of our systems interface directly with Salesforce for CRM, workflow automation, and customer operations.

This is a hands‑on engineering role for someone who enjoys owning features end‑to‑end, solving complex integration problems, and working closely with cross‑functional partners.

• Design, build, and maintain Java‑based backend services (Spring Boot or similar frameworks).
• Develop scalable, reliable, and well‑tested services that integrate with Salesforce and other internal/external systems.
• Participate in architecture and design discussions for APIs, data flows, and distributed systems.
• Write high‑quality, maintainable code with strong unit and integration test coverage.
• Troubleshoot and resolve complex issues across services, integrations, and data pipelines.

• Contribute to internal web applications and user interfaces backed by Java services, when needed.
• Collaborate with frontend or full‑stack engineers to support internal users across Operations, Support, Marketing, Risk, and Data teams.
• Partner with Product and UX (where applicable) to translate workflows into intuitive internal tools.
• Collaborate with backend engineers to define clean API contracts between UI layers and services.
• UI technologies may include Java‑backed web apps, REST‑driven front ends, or modern JavaScript frameworks consuming Java APIs.

• Build and maintain integrations between Java services and Salesforce using REST APIs, events, or middleware.
• Contribute to Salesforce development when needed, including Apex, Lightning Web Components, Flows, and configuration.
• Partner with Salesforce‑focused engineers to ensure clean integration patterns, data integrity, and platform scalability.
• Help troubleshoot Salesforce‑related issues tied to backend services, UI workflows, or integrations.

• Work closely with Product Managers, Technical Program Managers, and cross‑functional partners to translate requirements into technical solutions.
• Collaborate with Marketing, Operations, Support, Risk, and Data teams to ensure systems meet business and regulatory needs.
• Participate in sprint planning, estimation, and delivery, ensuring predictable and high‑quality outcomes.
• Communicate technical decisions, trade‑offs, and implementation details clearly to stakeholders.

• Follow and help improve engineering best practices including CI/CD, code reviews, testing strategies, and observability.
• Ensure services are performant, observable, and resilient, with appropriate logging, metrics, and alerting.
• Contribute to documentation, runbooks, and long‑term platform improvements.
• Identify technical debt and propose pragmatic solutions.

• 6+ years of professional software engineering experience with Java.
• Strong experience building backend services in a production environment.
• Experience developing APIs and integrating services with other systems.
• Familiarity with distributed systems, data flows, and service‑to‑service communication.
• Experience with Git‑based workflows, code reviews, and CI/CD pipelines.
• Strong problem‑solving skills and ability to work independently on complex systems.
• Excellent communication and collaboration skills.

• Experience contributing to internal web UIs or tooling, including Java‑backed web frameworks or modern front‑end frameworks consuming Java APIs (React, Angular, etc.).
• Experience working with Salesforce as an integration partner or platform: Apex, Lightning Web Components, Flows, or Salesforce APIs.
• Experience integrating Salesforce with Java‑based services.
• Experience with event‑driven architectures (Kafka or similar), cloud environments (AWS preferred), highly available or regulated systems (gaming, fintech, payments).
• Experience working with AI model or agent platforms, including building on or integrating agents into production workflows. Familiarity with platforms such as Anthropic, OpenAI, Amazon Bedrock, LangChain, Google Vertex AI, Microsoft Copilot Studio, CrewAI, or AutoGen is a plus.
• Familiarity using AI‑powered coding assistants to design, build, and test new functionality from the ground up, with the ability to move quickly while maintaining high code quality and test coverage.
• Interest in leveraging emerging tools and workflows to improve developer productivity and platform throughput.
• Salesforce certifications (Administrator, Developer) are a plus, but not required.

• Passion for building high‑quality internal platforms that directly impact business outcomes.
• Strong ownership mindset and commitment to engineering excellence.
• Collaborative approach and desire to continuously learn and improve.
• Comfort operating in a fast‑paced, evolving environment.

• Posting Date: 01/19/2026, 04:58 PM
• Location: 210 Euston Road, London, GBR, NW1 2DA, GB (Remote)