Java Engineer III in London

Java Engineer III in London

London Full-Time 43200 - 72000 ÂŁ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Build and maintain scalable Java backend services for a leading sportsbook experience.
  • Company: Join Fanatics Betting & Gaming, a trusted name in sports betting technology.
  • Benefits: Enjoy competitive salary, remote work options, and opportunities for professional growth.
  • Why this job: Make a real impact on innovative projects in a fast-paced, collaborative environment.
  • Qualifications: 6+ years of Java experience and strong problem-solving skills required.
  • Other info: Exciting career growth with a focus on engineering excellence and teamwork.

The predicted salary is between 43200 - 72000 ÂŁ per year.

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.

Key Responsibilities
  • Backend & Platform Engineering (Primary Focus)
  • 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.
  • Internal UI & Application Development (Nice to Have / Secondary)
  • 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.
  • Salesforce & CRM Platform Integration (Secondary Focus)
  • 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.
  • Collaboration & Delivery
  • 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.
  • Operational Excellence & Best Practices
  • 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.
Qualifications
  • Required
  • 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.
  • Preferred
  • 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.
What We Value
  • 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.

Java Engineer III in London employer: Fanatics

At Fanatics Betting & Gaming, we pride ourselves on fostering a dynamic and inclusive work culture that empowers our employees to take ownership of their projects and drive innovation. Located in the heart of London, we offer competitive benefits, opportunities for professional growth, and a collaborative environment where your contributions directly impact our fan-centric sportsbook experience. Join us to be part of a passionate team dedicated to engineering excellence and continuous improvement.
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Contact Detail:

Fanatics Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Java Engineer III in London

✨Tip Number 1

Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A friendly chat can open doors that a CV just can't.

✨Tip Number 2

Show off your skills! If you’ve got a GitHub or personal project, make sure to share it. It’s a great way to demonstrate your Java prowess and problem-solving skills.

✨Tip Number 3

Prepare for the interview like it’s the Super Bowl! Research the company, understand their products, and be ready to discuss how your experience aligns with their needs.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive!

We think you need these skills to ace Java Engineer III in London

Java
Spring Boot
API Development
Salesforce Integration
REST APIs
Apex
Lightning Web Components
Event-Driven Architectures
CI/CD
Git
Problem-Solving Skills
Communication Skills
Collaboration Skills
Data Flows
Distributed Systems

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your Java backend experience and any relevant projects you've worked on. We want to see how your skills align with the role, so don’t be shy about showcasing your achievements!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about building scalable services and how you can contribute to our internal platforms. Keep it engaging and personal!

Showcase Your Problem-Solving Skills: In your application, mention specific examples where you've tackled complex integration problems or improved existing systems. We love seeing how you approach challenges and find solutions!

Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It helps us keep track of your application and ensures you don’t miss out on any important updates!

How to prepare for a job interview at Fanatics

✨Know Your Java Inside Out

Make sure you brush up on your Java skills, especially with frameworks like Spring Boot. Be ready to discuss your past projects and how you've built scalable backend services. They’ll want to see that you can not only code but also understand the architecture behind it.

✨Familiarise Yourself with Salesforce

Since this role involves integrating Java services with Salesforce, it’s a good idea to get a grasp of Salesforce development basics. If you have experience with Apex or Lightning Web Components, be prepared to share specific examples of how you've used them in past projects.

✨Prepare for Problem-Solving Questions

Expect to tackle some complex integration problems during the interview. Brush up on your problem-solving skills and think through how you would approach troubleshooting issues across services and data pipelines. They’ll appreciate a structured thought process.

✨Show Your Collaborative Spirit

This role requires working closely with cross-functional teams, so be ready to discuss how you’ve collaborated with product managers, UX designers, and other engineers in the past. Highlight any experiences where you translated technical requirements into user-friendly solutions.

Java Engineer III in London
Fanatics
Location: London
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  • Java Engineer III in London

    London
    Full-Time
    43200 - 72000 ÂŁ / year (est.)
  • F

    Fanatics

    1000+
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