Job title: Quantitative Developer
Location: Sofia
Overview of the role:
We are excited to announce that we are looking to expand our Quant Development team.
As a Quantitative Developer, you will be responsible for the back end and the mathematical models in the heart of our exciting online casino slot games. The best possible gaming experience of our players will be in your hands!
This role follows a hybrid approach to working, allowing you to combine working from home with working in our modern offices. These discussions are between you and your manager to find the best pattern for you both, while recognising that quality time together is essential for keeping us mission-aligned.
Our teams work from a lively location nestled within this historic city. Enjoy the best of both worlds with winter and summer offices, tantalizing free snacks and a gaming paradise for endless entertainment.
What you’ll do:
Develop a Java server for the games
Create analytical and simulated game math models to determine game return to player (RTP) and capture vital statistics about the game’s volatility profile
Refine games by test playing and making changes based on gameplay
Support the game development in all phases, collaborating with other teams through the creation process
Work on integrations with game platforms
What you’ll bring:
Experience with technologies and tools such as Java, Maven, Bash, Tomcat, Docker, Git and Jira
Experience in maths and statistics
A passion for continuos learning and staying ahead of the latest development technologies in the online casino games industry
A collaborative and proactive attitude, ready to share knowledge and cooperate with team members
It’s ok if you don’t think you tick every box on this list. We love people who want to challenge themselves and are passionate about what they do. If you believe you can contribute in some areas and are eager to learn, we encourage you to apply.
Why choose us:
Aside from a generous base salary, we have a fantastic benefits & rewards program that is designed to encourage personal and career development.
Discretionary annual bonus
30 days paid leave
Health and Dental Insurance for you, your partner and your children (if you all live at the same address)
Personal life insurance and disability coverage
Wellbeing fund
Continuous learning support for certifications and career growth
550 EUR gift for newborn family member
26 weeks Maternity leave at 100% pay and 4 week secondary (Paternity) also at 100% pay, no eligibility period applies
A sports’ card membership valid across the country
Discounts as a compliment form us among different services
Monthly food vouchers
Equal opportunities:
At Flutter we are committed to creating an inclusive environment where our people can be their authentic selves and thrive. We embrace and celebrate diversity, respecting all our uniqueness and differences.
We welcome you to let us know whether you have any accessibility needs. All you need to do is email us at [email protected]. Your journey with us is focused on ensuring you have what you need to be your best self.
Learn more about the work we are doing on Inclusion and Belonging here: https://careers.flutterinternational.com/working-at-flutter-international/diversity-equity-inclusion/
The group:
Flutter Studios is a proud member of the Flutter Entertainment family, a global leader in sports betting, iGaming, and entertainment. We're not just another company; we're listed on both the prestigious FTSE 100 index on the London Stock Exchange and the New York Stock Exchange (NYSE). What sets us apart is our world class brands, cutting-edge products, and our International division includes our operations in over 100 global markets and offers sports betting, casino, poker, rummy and lottery, mainly online. What truly defines us is our commitment to ensuring that the excitement of gaming and entertainment is experienced in a responsible and sustainable way. Our remarkable team of over 8,000 colleagues drives this vision, spread across 28 offices worldwide.
Skills Required
- Experience with Java, Maven, Bash, Tomcat, Docker, Git, and Jira
- Experience with mathematics and statistics
- Passion for continuous learning and current development technologies
- Collaborative and proactive attitude
Flutter International Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Flutter International and has not been reviewed or approved by Flutter International.
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Wellbeing & Lifestyle Benefits — On‑site perks, wellbeing programs, and hobby/gym options are consistently emphasized, with a publicly described broad benefits package aligning to these elements. The overall package is often positioned as a strength beyond base salary.
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Leave & Time Off Breadth — Generous annual leave and paid volunteering time are highlighted as core offerings across many locations. Role pages and job ads reinforce time‑off as a notable component of the total package.
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Healthcare Strength — Private medical and dental coverage, alongside wellbeing resources and an Employee Assistance Programme, are described as core parts of the offer. Health insurance and related extras are noted across multiple countries.
Flutter International Insights
What We Do
We’re Flutter International, a global sports betting, gaming and entertainment provider. We operate some of the world’s most innovative, diverse and distinctive brands, including PokerStars, Betfair International, Adjarabet, Junglee Games, Sisal and Singular. Our vision is to be the player's champion, wherever they play, and that’s #MadePossibleBy the people in our teams. If you’re ready to champion play, champion empowerment, and champion teamwork, then we could have the perfect role for you. With five million customers around the world, it’s a fast-paced environment, but we really do have something for everyone. Are you ready to discover a world of possibilities? Take a look at our openings in the Jobs tab and apply today.
