Senior Platform Developer - Game Integration Team · Sunderland, UK ·

Tombola Ltd; Sunderland; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A gaming software company in Sunderland is seeking a Senior Platform Developer to lead new innovative projects and influence technical direction within the team. This role emphasizes high-impact work with a focus on quality and inclusivity, where your contributions will be significant. The ideal candidate has extensive C# and .NET experience, and the opportunity offers hybrid working arrangements along with attractive benefits.

Benefits

Hybrid working

Supportive team environment

Growth and investment in people

Attractive culture and benefits

Qualifications

• Strong background in C# and .NET development.
• Experience in building reliable and scalable systems.
• Proven ability to coach and mentor junior developers.

Responsibilities

• Refactor and decouple components for multiple studios.
• Maintain and improve back end services.
• Coach and support developers.

Skills

C# and .NET experience

Building scalable back-end systems

Coaching and mentoring developers

AWS or cloud native technologies

Adaptable in fast-paced environment

Tools

C# ASP.NET

AWS services

Docker

SQL and NoSQL databases

Job description

Join the Exciting Journey at tombola 🎱

Ready to step into a senior role that exists because of real growth and real success? This opportunity has opened up thanks to an internal promotion within the team. Someone has developed and progressed their career with us which means we are now looking for another established Senior Platform Developer to help us keep building momentum. It is a brilliant sign of the progression, maturity and investment happening across the wider Platform Team at tombola.

We are looking for an experienced and confident Senior Developer who brings depth, strong opinions and proper senior level thinking. Someone who can help shape where we go next and keep raising the bar.

You will not be coming in to maintain old code. You will be working on new and exciting projects that directly support how our games connect to the platform. You will be building the foundations that let multiple studios innovate at pace. Your work will be noticed. Your decisions will matter. Your experience will shape our next chapter.

Find your bounce at tombola 🎉

At tombola we build everything in house. Our platform. Our games. Our tools. We care about quality and we care about doing things well. It is the kind of place where you can see the impact of your work and feel the bounce every day.

What will I be doing 🔎

You will be stepping into a senior role that influences technical direction across the wider Platform Team at tombola. You will help drive forward our mission to fully decouple our platform from our games so our studios can innovate freely. This is high impact work across performance, reliability, scalability and future growth.

What you will be working on 🍿

• Refactoring and decoupling platform components so multiple studios and games can integrate smoothly
• Maintaining and improving back end services and APIs to support reliability and growth
• Making sure the platform is reliable, scalable and flexible for future expansion
• Taking ownership of back end projects that have visibility across the business
• Helping guide engineering choices by shaping patterns, practices and approaches
• Coaching and mentoring developers to support their growth and confidence
• Supporting the team through pair programming, knowledge sharing and technical guidance
• Contributing your senior voice to planning, architecture and wider platform decisions

What does good look like for us 😇

• Established Senior Developer with strong C# and .NET experience
• Excellent knowledge of .NET Framework MVC and .NET Core
• Proven experience building scalable, reliable and secure back‑end systems
• Comfortable operating in complex platform environments
• Confident contributing to architecture and technical direction
• Experience coaching and mentoring other developers
• Pragmatic and adaptable in a fast‑paced environment
• Experience with AWS or cloud native technologies

The tech you will get hands on with 🔧

• C# ASP.NET Framework and Core
• AWS services including S3, RDS, ECS
• Docker, Terraform, TeamCity, GitHub
• SQL and NoSQL databases including MSSQL, DynamoDB and Redis
• Node.js and TypeScript where it supports integration work

Why join us? ⭐️

• This senior role exists due to an internal promotion which shows our growth and investment in our people
• You will be working on new future‑facing projects rather than just legacy maintenance
• Your work will be visible across multiple game studios and business areas
• You will help shape the modern platform that supports the future of tombola
• You will join a supportive team that values proper engineering and senior influence
• You will enjoy hybrid working three days in our Sunderland office plus brilliant benefits and a culture built on growth. Click here to see all our benefits.

If you are an experienced Senior Developer who wants to step into a high impact role created through genuine internal progression and team growth, your journey starts here.

At tombola we know that our differences make us stronger and that thinking differently is key to long‑term success. We work hard to create a culture of inclusivity where everyone can celebrate our Free to be me value. We are committed to creating opportunities for everyone here at tombola, we welcome applications from all backgrounds and encourage individuals to apply, even if you don’t meet every requirement.