Senior Java Backend Developer

Lindar; Gibraltar; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

An innovative online casino is looking for a Senior Java Backend Developer to join their team. This hybrid role requires expertise in Java and Spring, focusing on building and evolving internal systems for player management and reporting. The ideal candidate will have over 5 years of experience and a strong understanding of web application architecture. Benefits include competitive salary, additional leave days, and a commitment to diversity and inclusion in the workplace.

Benefits

Competitive salary package

Additional leave days

Birthday leave

Four-week parental leave

International health and life insurance

Wellness incentives

Growth allowance

Flexible working environment

Qualifications

• 5+ years of practical experience with Java and Spring.
• Solid understanding of web application architecture and microservices.
• Experience with concurrent programming and distributed transaction management.

Responsibilities

• Design, build, and maintain the internal back-office platform.
• Develop backend services in a continuous delivery environment.
• Integrate with internal and third-party systems.

Skills

Java

Spring

Microservices

Kotlin

Kafka

Redis

Kubernetes

MongoDB

AngularJS

Concurrent Programming

Job description

Overview

Mr Who?

MrQ - we're an awesome, award winning online casino launched in 2018. We're big on tech, big on performance and most of all - big on fun. Over the years, we have experienced explosive growth - which means we need more rock stars to join our quest for total world domination.

We are looking for an awesome Senior Java Backend Developer to join our PQ tribe - the team responsible for building and evolving the internal systems that power player management, reporting, compliance, and operations across the entire business. The role is a hybrid based one in the UK (St Albans), Malta, or Gibraltar.

What You Will Do

• Design, build, and maintain PQ, our internal back-office platform used for player management, reporting, flags, triggers, and operational workflows.

• Develop backend services in a continuous delivery environment, using Java, Spring, and modern open-source technologies. Work with event-driven and distributed systems, ensuring correctness, idempotency, and reliability across services.

• Own complex domains such as player accounts, account statuses, events, triggers, flags, reporting, and internal tooling.

• Collaborate closely with product managers, designers, data teams, compliance, and operations, translating real business needs into scalable technical solutions.

• Integrate with internal and third-party systems, including messaging platforms, data pipelines, and external APIs.

• Contribute to architectural decisions and help shape the future direction of PQ, a system that is constantly evolving.

• Be an active voice in engineering culture - mentoring others, sharing knowledge, and raising the bar for code quality and system design.

What We're Looking For

• A strong team player with excellent communication and collaboration skills that demonstrates critical thinking and problem-solving abilities, and able to manage their time.

• Demonstrated strength in system design, including the ability to design end-to-end solutions, reason about trade-offs, and evolve existing systems to handle scale, reliability, and changing business requirements.

• 5+ years of in-depth practical experience with Java and Spring. Knowledge of other JVM-based languages, especially Kotlin is a plus.

• Solid understanding of web application architecture and microservices.

• Strong grasp and professional experience with concurrent programming, concepts idempotency and distributed transaction management in application logic.

• Familiarity with the technologies in our stack, including Kafka, Redis, and Kubernetes.

• Practical experience with MongoDB would be considered a big advantage.

• Knowledge of AngularJS is a plus.

• Passion in the eyes and swiftness in the fingers ;)

What We Offer

At MrQ, we take pride in providing an array of fantastic benefits to our valued team members. Enjoy a competitive salary package that recognizes your hard work and dedication. Need some extra time off? We\'ve got you covered with additional leave days, and we believe in celebrating life\'s special moments, including your birthday, with dedicated birthday leave. Family matters to us, too, which is why we offer a generous four-week parental leave. Your well-being is our priority, supported by international health and life insurance. Stay motivated with wellness incentives and seize opportunities for personal and professional growth with our growth allowance. Embrace a flexible working environment that caters to your needs, and join our friendly and multinational team, where collaboration and camaraderie flourish. At MrQ, we\'re committed to ensuring that your experience with us goes beyond just a job – it\'s a fulfilling journey with a supportive community.

We are committed to fostering a workplace that values and celebrates diversity. We welcome individuals of all backgrounds and experiences, and we believe that a diverse and inclusive environment leads to innovation and success. We actively promote equal opportunities for all employees and strive to create a space where everyone\'s voices are heard and respected. Join us in our journey to build a truly inclusive workplace where every person can thrive and contribute to our collective success.

To help our recruitment team work efficiently, please apply to the role that best matches your skills and experience. Our team will consider you for other similar roles as well!