Senior Back-end Developer

Overview  of the Role 

We are looking for a Senior Back-end Developer to join our team. The ideal candidate will work primarily on .NET 8 or higher.

This role follows a hybrid approach to working, allowing you to combine working from home with working in our modern offices. You and your manager will agree on the best working pattern that suits both of you. We’ll kit you out to work remotely, but we know that collaboration is key to our success, and spending quality time together helps us stay aligned with our mission.

What you’ll do:  

Develop server-side web services using .NET language (C#, .NET 8 or higher);  

Developing smooth and efficient code to develop effective web applications;  

Upgrading, configuring and debugging existing systems;  

Participate in gathering requirements and business specification reviews;  

Contribute to logical and physical design of the product;  

Source code analysis and debugging;  

Review and enforce the quality of code;  

Removing the errors and bugs in the applications so as to make them better for the end-users;  

Creating technical documentation using required standards;  

Participating in the application lifecycle with particular focus on removing the bugs and improving the code;  

Working alongside Front-end Developers for integrating the user aspects of the application with the logic on the server side;   Developing reusable libraries and code for future use;  

Keeping in contact with designers, developers and system administrators to look for new features; 

Perform related duties as assigned.  

What you’ll bring: 

Working Experience:

5 years of experience as a Back-end Developer;  

Prior experience in a relevant field, preferably as a Back-end developer;  

In-depth knowledge of the entire process of web development (design, development, and deployment);  

First Hand experience in coding languages (e.g. C#);  

Experience in Agile projects and Scrum processes.  

Knowledge:

Should hold strong knowledge of C#, .NET, REST API;  

Understanding of the design/architectural patterns;  

Understanding of architecture styles/APIs (REST,SOAP);  

Experience in Dapper and Entity Framework Core;

Experience of working with Git and source control tools;

Knowledge of AWS, Jenkins and CI/CD;

Knowledge of OOP concepts and design patterns;  

Highly skilled in writing testable code and unit tests using xUnit and Moq;

Highly skilled with using MySQL; 

Highly skilled with testing (Unit and Integration tests);  

Knowledge in industry standard technologies for planning and building high performing and scalable solutions;  

Good knowledge of JIRA;  

Preferable to have: Experience with message broker systems (RabbitMQ, Kafka, Apache Artemis, or similar)

Proficient understanding of code versioning tools;  

Proficient in written and verbal English communication.

Personal Attributes  

Analytical and synthesis skills;  

Problem-solving skills;  

Autonomy and resourcefulness;  

Sense of initiative;  

Attention to detail;  

Flexibility in organizing work;  

Ability to work as part of a team;  

Ability to adapt to change;  

Results driven.  

About Flutter CEE   

We are Flutter Central & Eastern Europe (CEE).

As a proud member of the Flutter family - a global leader in sports betting and iGaming - we are building one of the Group’s most dynamic tech and product hubs in Central and Eastern Europe. We aren’t just here to participate. We’re here to change the game.

By uniting local powerhouses like MaxBet, Adjarabet.com, and Adjarabet.am, we combine deep regional expertise with the scale and strength of Flutter’s global platforms. We’re setting a new standard for entertainment, responsibility, and innovation - powered by real customer signals that shape everything we build.

Settling for the status quo isn’t in our DNA. We build systems designed to scale.

We’re moving faster, thinking bigger, and putting our customers exactly where they belong: at the heart of every decision. We start by listening to our customers and the communities we serve. What we see, hear, and learn become clear signals, and those signals quickly shape product decisions, better experiences, and responsible innovation.

Technology powers our ambition. The Signature System - our operating model - makes our signal-led approach repeatable and scalable across markets. It’s how we move fast and grow with confidence.

As part of Flutter, we benefit from the Group’s collective advantage - the Flutter Edge. It allows us to identify success in one market, replicate it across brands, and implement proven ideas quickly - with customers always at the forefront.

We’re a team of thousands, driven by a challenger mindset and a shared commitment to lead. We are shaping the future of iGaming in Central and Eastern Europe right here, right now, and our technology and product teams are defining what responsible innovation looks like in practice - not just in theory.

We are Flutter Central & Eastern Europe (CEE).

Built on experience. Built to lead.

Local champions. Global infrastructure.

Why choose us    

At Flutter CEE, people have access to vast opportunities for career growth and self-development. Our employee benefits package goes far beyond offering the minimum: We support our people in becoming their best version at work and beyond - and our benefits reflect that commitment.   

These are some of the benefits included in our employee package:   

Generous annual leave  

Hybrid work 

Individual health insurance  

Paid sick leave  

Paid maternity & paternity leave  

Family reward

Performance & referral bonuses  

Loyalty award