Software Engineer

Legend; City Of London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading tech company in the UK is seeking a Backend Software Engineer to design scalable tournament experiences. You'll write clean Ruby code, optimize backend architecture, and ensure high-performance applications. The ideal candidate has experience in delivering customer-facing software and applies Domain-Driven Design principles. Join us to shape the future of competitive gaming. Excellent benefits and opportunities for growth await you.

Benefits

Annual discretionary bonus

Paid annual leave

Work-life balance flexibility

Long term incentive plan

Global team events

Qualifications

• Experience delivering large-scale customer-facing software.
• Proficiency in at least one backend programming language.
• Experience with code review and maintaining high code quality.

Responsibilities

• Design and implement application architecture for scalability.
• Write clean, efficient, and well-documented code.
• Conduct code reviews and optimize code performance.

Skills

Backend programming

API design

Performance optimization

Domain-Driven Design

Collaboration in teams

Tools

Ruby

GCP

Pub/Sub

Job description

About Legend

We’re Legend. The team quietly building #1 products that make noise in the most competitive comparison markets in the world. iGaming. Sports Betting. Personal Finance.

We exist to build better experiences. From amplified career paths to supercharged online journeys — for our people and our users, we deliver magic rooted in method. With over 500 Legends and counting, we’re helping companies turbocharge their brand growth in over 18 countries worldwide.

If you’re looking for a company with momentum and the opportunity to progress at pace, Legend has it.

Unlock the Legend in you.

The Role

Legend is hiring a Software Engineer, reporting directly to our Engineering Manager. We’re building the future of competitive gaming — and we need a backend engineer to help us do it. Our team is focused on delivering scalable, high-performance tournament experiences that captivate players and fuel platform growth. With a clear split between frontend and backend, this role dives deep into backend architecture, optimising performance, and launching new services that enable our tournaments to evolve fast and reliably. You\'ll be hands-on in designing robust systems, writing clean Ruby code, applying domain-driven design, and working with cutting-edge cloud technologies like GCP and Pub/Sub.

If you thrive in high-impact environments, care deeply about engineering excellence, and want to shape the technical foundation of a growing product, this is the opportunity to make your mark.

In this role, we value diverse perspectives and encourage you to apply even if you don\'t meet every qualification listed.

Your Impact

• Contributing to the design and implementation of application architecture, ensuring scalability, performance, and maintainability.
• Writing clean, efficient, and well-documented code.
• Conducting code reviews, identifying and resolving bugs, and implementing best practices to maintain high code quality.
• Identifying and resolving performance bottlenecks, optimising code for speed and efficiency.
• Designing and implementing secure applications, considering potential vulnerabilities and implementing appropriate safeguards.
• Lead on business-critical projects such as infrastructure audit and target areas of improvements.

What You\'ll Bring

• Hands-on experience delivering large-scale, customer-facing software, with a strong focus on backend services and how to integrate application and data
• Demonstrated success applying Domain-Driven Design (DDD) principles and an API-first mindset on multi-tenant platforms.
• Deep background as a backend engineer, consistently using best-practice design principles such as SOLID, GRASP, and common design patterns.
• Proficiency in Ruby is preferred - highly skilled in at least one backend programming language (e.g. Ruby, Go, Python, Rust, NodeJS).
• Proven product engineering mindset - able to translate requirements into clear technical designs, produce well-defined roadmaps, and deliver high-quality implementations.
• Experience with Pub/Sub (Publish/Subscribe), web sockets and SSE (Server Side Event).

The Interview Process

• 1st: Initial Chat with Talent Partner (30-45 mins via Zoom)
• 2nd: Technical Interview with our Tech team (1 hour video via Zoom)
• 3rd: Competency Based Interview with our team (1 hour video via Zoom)
• 4th: Final Interview with our Tech leadership team (45 mins via Zoom)

Why Legend

• Super smart colleagues to work alongside and learn from.
• Engaging development opportunities at all levels.
• Tailored flexibility for your work-life balance.
• Annual discretionary bonus to reward your efforts.
• Paid annual leave PLUS a well-deserved break to recharge your batteries during the festive season! Our offices are closed between Christmas and New Year\'s, allowing you to enjoy downtime without dipping into your annual allowance.
• Long term incentive plan so we can all share in the growth and success of Legend.
• Exciting global Legend events, where we unite in person to ignite our shared passion and unveil the exciting strategies for the year ahead!
• Unlock your full potential by joining the Legend team. To support you on this journey, we provide an extensive array of benefits and perks, as outlined in our global offerings above. For country specific benefits please reach out to your talent partner.

Legend is an Equal Opportunity Employer, but that’s just the start. We believe different perspectives help us grow and achieve more. That’s why we’re dedicated to hiring and developing the most talented and diverse team- which includes individuals with different backgrounds, abilities, identities and experiences. If you require any reasonable adjustments throughout your application process, please speak to your Talent Partner or contact the team on [e-mail], and we\'ll do all we can to support you.