Principal Software Engineer

Edinburgh, Scotland, United Kingdom Software Engineering

The Position

 

You are a technical voice the Engineering organization trusts and follows. You are part of a community of FanDuel’s most senior Engineers, focused on the organization’s most complex and ambiguous problems: shaping our future architecture, setting technical expectations and guidance, and setting and maintaining the highest engineering standards.

You guide, influence and are accountable for the final technical call on choices that affect hundreds of engineers across multiple domains and verticals. You embody our principle Challenge and Commit and have proven experience in judging when to look for consensus and when the call is yours to make. You know how to communicate and connect successfully at scale, in person and asynchronously.

You regularly interact with executives up to the c-suite, distilling the essentials from a complex technical strategy and folding business strategy into our technical direction.

You own the technical strategy for the CPE engineering domain, with ownership & responsibility for technical architecture (current and target state), operational excellence and engineering standards.

CPE builds the systems fans touch first and trust most: payments and money movement, account and onboarding, geolocation, responsible gaming and player integrity, and the promotions, rewards and loyalty, campaign orchestration, personalization, and marketing messaging that shape every fan's day-to-day experience. That means designing for extreme peak load that spikes around live events, and for a heavily regulated environment where auditability and evidence matter as much as availability. You take a leadership role on the domain's most important work, balancing a long view against short-term demands and taking a pragmatic approach to architectural design. Your work always follows our principle – Everything Begins with the Customer.

You do not accept the status quo, and you strongly influence other domains and verticals, and the organization’s “North Star” technical strategy. You will spend some of your time working with the Principal Community and other senior Engineers to set the standard for how AI is used across the SDLC, including where we choose not to use it, and to shape our engineering practices, back-end and front-end architecture, FanDuel’s product suite, our tools, approaches and processes. You wear your FanDuel hat first and foremost; you do not restrict yourself to organizational boundaries – We are One team.

You mentor and support our Senior Staff Engineers, themselves highly experienced, and serve as a role model to our engineering community and a visible part of how the domain is run. You are Humble and Hungry.

 

What We’re Looking For

 

  • Expert-level experience building and designing scalable, fault-tolerant and highly available systems, including systems under extreme peak load that spikes around live events
  • Experience influencing technical direction across 200+ person Engineering organizations
  • Expert-level understanding of engineering design patterns and architectural approaches.
  • Deep, current, hands-on command of AI-assisted software development: agentic coding and spec-driven development workflows, the context and tooling that make them work, and review, testing and verification practices that hold up as code volume rises
  • A proven track record taking an engineering organization past experimentation to a measured change in how software is built: setting the standards for where AI is and is not used, evidence of the effect on throughput, quality and security, and the judgment to tell real uplift from theatre. Able to do this in a regulated environment, where auditability and data boundaries constrain what AI is allowed to touch
  • Experienced in making pragmatic tradeoffs between short-term needs and long-term needs
  • Able to build trust and shared understanding with teams and engineers who do not report to you
  • Deep experience in modern back-end languages, functional and object-oriented, including Java
  • Demonstrated ability to raise operational excellence and best practice through influence and collaboration

 

What You'll Do

 

  • Take ownership of CPE’s domain architecture, aligning the domain’s Senior Staff Engineers on a target technical architecture and strategy
  • Take ownership of the domain’s operational excellence, taking a hands-on approach to the resolution of its most complex issues when needed. This includes supporting resolution and mitigation of production incidents, and the corrective actions that prevent them recurring.
  • Write simple code, taking complex paradigms and implementing them in a way that Engineers at all levels can understand and contribute to. You set the pattern through prototypes and reference implementations rather than owning feature delivery. Insist on high standards for code quality while not letting perfection be the enemy of the good
  • Influence the delivery of the domain’s teams and their Staff and Senior Staff Engineers, helping them understand how to make technical tradeoff decisions between short-term business needs and long-term technology needs
  • Drive engineering best practices (e.g., Operational Excellence, Security, Quality) and set standards for the CPE domain
  • Help others leverage your expertise, by coaching and mentoring Senior Staff Engineers in your organization
  • Support our software as part of the domain’s senior escalation tier, rather than the primary on-call rotation

 

What You Can Expect

 

  • Interesting work - working in a fast-paced and ever-changing industry, new problems and exciting solutions are never too far away. There are always opportunities to learn new skills and broaden your horizons
  • A sense of achievement - Our teams own their own software and when that awesome new feature ships to users and the positive feedback starts rolling in, you can feel really proud of what you and your team created
  • Personal development - clear and defined career pathways for every role at every level, a supportive manager, loads of learning opportunities and even 10% of your time to dedicate to your learning
  • Belonging - everyone at FanDuel works for each other, we win together, make mistakes together and have lots of fun doing it
  • Trust - A trusting work environment where productivity is valued above all else, giving you autonomy and ownership of your time and work
  • Great financial package - Including salary, bonus, pension, private healthcare, share save scheme, flexible working & holiday policy along with a number of other benefits

 

ABOUT FANDUEL

 

FanDuel Group is the premier mobile gaming company in the United States and Canada. FanDuel Group consists of a portfolio of leading brands across mobile wagering including: America’s #1 Sportsbook, FanDuel Sportsbook; its leading iGaming platform, FanDuel Casino; the industry’s unquestioned leader in horse racing and advance-deposit wagering, FanDuel Racing; and its daily fantasy sports product.  

In addition, FanDuel Group operates FanDuel TV, its broadly distributed linear cable television network and FanDuel TV+, its leading direct-to-consumer OTT platform. FanDuel Group has a presence across all 50 states, Canada, and Puerto Rico.

The company is based in New York with US offices in Los Angeles, Atlanta, and Jersey City, as well as global offices in Canada and Scotland. The company’s affiliates have offices worldwide, including in Ireland, Portugal, Romania, and Australia.

FanDuel Group is a subsidiary of Flutter Entertainment, the world's largest sports betting and gaming operator with a portfolio of globally recognized brands and traded on the New York Stock Exchange (NYSE: FLUT).

 

 

Diversity, Equity and Inclusion

 

FanDuel is an equal opportunities employer. Diversity and inclusion in FanDuel means that we respect and value everyone as individuals. We don't tolerate bias, judgement or harassment. Our focus is on developing employees so that they reach their full potential.

FanDuel is committed to providing reasonable accommodations for qualified individuals with disabilities. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please email [email protected].

The requirements listed in our job descriptions are guidelines, not hard and fast rules. You don’t have to satisfy every requirement or meet every qualification listed. If your skills are transferable and you are in the ballpark experience-wise, we'd love to speak to you!

 

 

Apply for this position

Technology

Engineering, IT, Cybersecurity, Data, Cloud, AI

We’re the backbone and the turbo engine behind FanDuel’s rise—and we don’t just build software, we build the future. Step into our world and you’ll find a frontier-style playground where top-tier talent tackles complex challenges head-on.

From crafting innovative tech to scaling a platform that’s fast, secure, and rock-solid, we’re doing it all in one of the most regulated—and exciting—markets out there. Every day brings something new, and we wouldn’t have it any other way.

Corporate Strategy

business strategy, operations, automation

Think of us as FanDuel’s internal special ops team—part strategy, part execution, all impact. We partner with leadership to launch bold new initiatives, untangle complex cross-functional puzzles, and jump in wherever extra brainpower or fresh skills are needed.

Our secret weapon? We get to do all this in the world of sports and gaming—stuff we (and millions of fans) live and breathe every day. It’s work, but it sure doesn’t feel like it.

Risk & Trading

sports trading, innovation, Data science

We’re the brains behind the odds—the Risk & Trading team that keeps FanDuel sharp, smart, and always one step ahead. Using cutting-edge models and real-time insights, we price markets with precision and manage risk like pros, all while staying locked into the rules of every jurisdiction we play in.

But we don’t just crunch numbers—we shape strategy. Collaborating across the business, we help power bold moves and smooth experiences that keep our customers coming back for more. Bottom line: if it affects the odds, we’re all over it.

Product

Product Management, Design, Data, Research

We dream it, design it, and deliver it—we’re the team behind the experiences customers can’t get enough of. From deep-dive research to sleek app features and wow-worthy retail moments, we turn insights into action and ideas into magic.

Packed with talent—Product Managers, Designers, Researchers, Data Scientists, and Analysts—we’re a powerhouse squad that partners with Marketing, Engineering, and Commercial to launch what’s next and level up what’s now. If it delights our customers, we’re all over it.

People

Human resources, Talent Acquisition, Early Careers, Talent Development, Inclusion, Compensation

We’re not your typical HR team—we’re the FanDuel People Team, and we bring the vibes. Sure, we handle the essentials like hiring, growth, pay, perks, and inclusion—but that’s just our warm-up act. We’re the crew behind the career-launching programs, can’t-miss events, and culture that keeps FanDuel buzzing.

From day one to day “let’s level up,” we’ve got your back—making sure your experience here is nothing short of legendary. Unparalleled? Check. Unrivaled? Always. Unforgettable? You better believe it.

External Affairs & Partnerships

Communications, Events, Government Affairs, Responsible Gaming

We’re the market-makers, bridge-builders, and big-picture thinkers. The Partnerships & External Affairs team is all about expanding FanDuel’s world—smartly, sustainably, and with serious swagger. From navigating the halls of government to shaping public perception, we run point on the programs that protect and grow our playing field.

We’re also in the business of bold connections—teaming up with partners and stakeholders to spot the next big opportunity and turn it into game-changing growth. If it helps FanDuel stretch, scale, and shine, we’re already on it.

Marketing

Strategy, Creative, Production, Media

If it grabs attention, sparks emotion, or makes fans say “wow”—that’s us. From bold brand moves to scroll-stopping content, performance magic to product promos, we bring FanDuel to life through storytelling that hits hard and sticks. You’ll spot our work everywhere—on your feed, during the big game, and lighting up the jumbotron at your favorite stadium.

We don’t just show up—we show off. Because making every moment more means putting ourselves out there. And let’s be real… we crush it.

Legal & Compliance

Legal, Compliance, Risk

We’re the powerhouse team behind the rules, the relationships, and the rocket fuel for FanDuel’s growth. From legal advice to lobbying, compliance to cutting-edge partnerships—we cover it all. Our crew of sharp attorneys, savvy policy pros, eagle-eyed analysts, and deal-makers brings serious expertise and even bigger energy.

In a world full of regulations, we keep FanDuel ahead of the game—building smart, sustainable strategies that unlock growth while playing by (and sometimes helping shape) the rules. Whether it’s gaming, sports, media, or tech, we know how to partner up and power forward.

Finance & Facilities

Accounting, Finance, Procurement, Workspace

Our Finance team is where strategy meets spark. We don’t just crunch numbers—we power big ideas. With sharp analysis, smart planning, and a healthy respect for risk, we fine-tune business operations to fuel what’s next. Growth? We’re already forecasting it.

Meanwhile, our Facilities team keeps FanDuel running in style. From scouting new spaces to building out sleek, modern offices, we create safe, top-tier environments that match our ambition. As a global crew, we make sure every location—whether home base or a pit stop—is a winning experience for employees on the move.

Customer Ops

Customer Support, CX, VIP, Payments & Fraud

We’re the front line, the fixers, and the fan advocates—all rolled into one. Around the clock, we’ve got our fans’ backs—answering questions, solving problems, and turning feedback into fuel for better products. We keep the play going and the good vibes flowing, while making sure our insights shape smarter marketing and sharper product experiences. In a fast-moving industry, we’re here to simplify, streamline, and smooth out the bumps—so fans can spend less time stuck and more time doing what they love: playing.

Commercial

Retail, Operations, Sportsbook

We’re the engine room that keeps FanDuel firing on all cylinders. Our mission? Make sure every project, plan, and play are driving toward a shared goal: serving our customers and hitting the business bullseye. We’re the glue behind the scenes—running fantasy contests, tracking performance, and sniffing out new opportunities like pros. With deep sports and casino know-how, a sharp eye for process upgrades, and commercial instincts to match, we balance today’s wins with tomorrow’s big plays. All while keeping the customer at the heart of the game.

Broadcast

FanDuel TV

Here, TV isn’t just TV—it’s our 24/7 hype machine. We call it “Transactional TV,” and it’s our secret sauce. Sure, horse racing is the star of the show, but we’re always sneaking in shoutouts to our other verticals during live, nationally aired broadcasts. We mix the thrill of the race with smart promos, playful retention tactics, and ways to help our fans win bigger and better. The result? We’re not just in the race—we’re leading the pack in betting.