Back to jobs

Software Engineer - Fullstack

London, England, United Kingdom

About Us

Fanatics is building a leading global digital sports platform. We ignite the passions of global sports fans and maximize the presence and reach for our hundreds of sports partners globally by offering products and services across Fanatics Commerce, Fanatics Collectibles, and Fanatics Betting & Gaming, allowing sports fans to Buy, Collect, and Bet. Through the Fanatics platform, sports fans can buy licensed fan gear, jerseys, lifestyle and streetwear products, headwear, and hardgoods; collect physical and digital trading cards, sports memorabilia, and other digital assets; and bet as the company builds its Sportsbook and iGaming platform. Fanatics has an established database of over 100 million global sports fans; a global partner network with approximately 900 sports properties, including major national and international professional sports leagues, players associations, teams, colleges, college conferences and retail partners, 2,500 athletes and celebrities, and 200 exclusive athletes; and over 2,000 retail locations, including its Lids retail stores. Our more than 22,000 employees are committed to relentlessly enhancing the fan experience and delighting sports fans globally. 

About Fanatics Markets:

Fanatics Markets is the real-money prediction and trading app where you can invest in moments you care about. Built on a secure platform, we let users predict real-world outcomes and trade on events they actually follow - from sports and entertainment to political elections and beyond. Our mission is to redefine how fans engage with the moments and markets that matter most. We're looking for the right people to help us build the future of prediction markets.

Overview:

This Software Engineer (Full Stack) role is an IC responsible for building and maintaining features for the web application that customers use to interact with our product. You’ll join a true 0→1 team, contributing to the product definition, technical foundations, and ways of working from scratch. You’ll contribute high-quality code and support best practices for AI-assisted development while building systems that can handle millions of events daily.

On the engineering side, we're pioneering the use of AI as a code collaborator. We need engineers who are proficient in using tools like Claude Code, Cursor, Codex, GitHub Copilot, or similar to ship production code efficiently while maintaining high quality standards.

Responsibilities:

  • Design, develop, test, and deploy scalable, high-quality web experiences using React, Next.js, and modern JavaScript/TypeScript.
  • Contribute to the technical evolution of our Markets web platform, partnering with product and design to deliver engaging, performant, and accessible features.
  • Implement and support features end-to-end: implementation → instrumentation → deployment → monitoring → iteration based on metrics.
  • Implement and maintain experimentation capabilities (feature flags, A/B tests) to validate ideas quickly and safely.
  • Integrate with backend APIs and collaborate with platform teams to build reliable, observable systems.
  • Make contributions to the Go backend.
  • Participate in code reviews, focusing on code quality, readability, and maintainability
  • Leverage AI tools to accelerate development velocity while maintaining high standards for security, correctness, and performance.
  • Follow and help improve team standards for AI usage (prompt patterns, code review checklists, validation strategies).
  • Contribute effectively to a fast-paced 0→1 environment, seeking opportunities to unblock others and take initiative.

Qualifications:

  • 3+ years experience building user-facing web applications using modern JavaScript/TypeScript and React.
  • Proficiency in React, component-driven development, and state management patterns, with familiarity with libraries like NextJS, TanStack Query, Tailwind, Zustand.
  • We’re looking for someone with a genuine interest in the blockchain space. Ideally, you’ve tinkered with EVM or Solana dApps and have experimented with libraries like ethers.js or viem to fetch data or trigger transactions. 
  • Solid understanding of JavaScript/TypeScript language features, idioms, and best practices.
  • Understanding of performance optimization, responsive design, accessibility, and web standards.
  • Experience integrating with backend APIs and collaborating with cross-functional platform/infra teams.
  • Familiarity with CI/CD pipelines, testing strategies, and safe deployment practices for web applications.
  • Team-first mentality, with a willingness to do what it takes to get the job done and a desire to strive for better.
  • Experience using AI tools (Claude Code, Codex, Cursor, Copilot, etc.) to ship production code.
  • Able to discuss how AI tools improve development workflow (e.g., boilerplate generation, debugging).
  • Communicates technical concepts clearly to diverse audiences, including engineers and stakeholders.
  • Thrives in a fast-paced environment where priorities evolve regularly and decisions are made quickly.
  • Ability to collaborate cross-functionally across diverse teams.

Preferred Qualifications:

  • Previous experience in a startup environment.
  • Contributions to open-source projects or technical communities.
  • Experience with real-money transaction systems and regulatory compliance.
  • Background in improving engineering productivity.
  • Interest in learning and influencing technical direction.

Depending on the role, your interview and onboarding experience may include in-person components, such as onsite interviews or Launching into Better: LIVE—a multi-day cultural immersion in New York City for full-time, non-seasonal hires. These sessions are designed to build connection and bring our culture to life, though specific travel and participation requirements will be confirmed based on your role and location. Your recruiter will provide clear guidance at each stage of the process.

Ready to build the future of sports betting? If you possess some of these skills but not all of them, we still encourage you to apply! Please note that visa sponsorship is not available for this position. We are open to fully remote candidates based in the United Kingdom. Remote employees may also be eligible for a home office setup stipend.

Create a Job Alert

Interested in building your career at Fanatics Betting & Gaming? Get future opportunities sent straight to your email.

Apply for this job

*

indicates a required field

Resume/CV*

Accepted file types: pdf, doc, docx, txt, rtf

Cover Letter

Accepted file types: pdf, doc, docx, txt, rtf

Select...
Select...
Select...
Select...
Select...
Select...
Select...

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Fanatics Betting & Gaming’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Select...
Select...
Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Select...

Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury
Select...

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.