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Senior Software Developer

AristocratLondon, United KingdomOnsite
We are seeking an experienced Senior Software Developer to join our team in designing and developing a robust Core Platform, driving the advancement of our Backend-as-a-Service (BaaS) offering, and supporting the migration of legacy systems to the new architecture. 
As a key member of our team, you will play a pivotal role in shaping the platform and services that support a suite of mobile and web applications. Your responsibilities will include designing and developing robust, scalable, and secure backend systems, as well as defining and enforcing the standards that ensure their integrity and compliance.  This role requires close collaboration with multiple stakeholders, making strong communication and proactive engagement essential. You should be able to articulate and support your recommendations with sound reasoning, grounded in engineering best practices and factual analysis, while maintaining an open, fair, and, where necessary, assertive approach. 

What You'll Do


Roles and Responsibilities



  • Design, develop, and maintain backend services and APIs using Java and cloud-native technologies.


  • Produce documents and diagrams, such as C4 or UML, to communicate your designs effectively with the wider development team.


  • Design actionable development tasks that drive iterative progress for product delivery and the team.


  • Implement and advocate for domain-driven design principles to create a well-structured and maintainable codebase.


  • Build and manage microservices architecture, ensuring services are scalable, reliable, and secure.


  • Collaborate with cross-functional teams, including frontend (mobile & web) developers, product managers, QA, solution architects, infrastructure, and DevOps, to deliver high-quality software solutions.


  • Write clean, maintainable, and efficient code following best practices and coding standards.


  • Perform code reviews, provide constructive feedback, and mentor junior developers.


  • Continuously improve existing systems by identifying and implementing performance optimizations and refactoring opportunities.


  • Ensure robust testing and validation of software through unit testing, integration testing, contract testing, and automated testing frameworks.


  • Participate in agile development processes, including sprint planning, stand-ups, and retrospectives.


  • Stay up to date with emerging technologies and industry trends and apply this knowledge to enhance our development practices.

What We're Looking For


Required Skills and Experience 



  • Proven experience as a backend developer with a strong focus on Java development with Spring (e.g., Boot, Cloud, Framework).


  • Solid understanding of cloud-native development and experience with cloud platforms such as Google Cloud (preferable), AWS, or Azure.


  • Expertise in domain-driven design (DDD) and its application in software development.


  • Strong knowledge of microservices architecture and experience in building and deploying microservices.


  • Proficiency in RESTful API design and development.


  • Experience with containerization technologies such as Docker and orchestration tools like Kubernetes.


  • Familiarity with database technologies, both SQL and NoSQL (e.g., PostgreSQL, MySQL, MongoDB).


  • Understanding of solid engineering principles, including SOLID, DRY, and KISS.


  • Strong knowledge of Software & Cloud design patterns, especially Strangler Fig.


  • Experience with version control systems (e.g., Git) and CI/CD pipelines (e.g., GitHub Actions, Gradle, Maven, ArgoCD).


  • Excellent problem-solving skills and the ability to work independently and as part of a team.


  • Effective communication skills and the ability to articulate technical concepts to non-technical stakeholders.

Preferred Skills and Experience 



  • Experience with event-driven architecture and messaging systems (e.g., Kafka, RabbitMQ).


  • Experience developing a mobile client and understanding of their challenges.


  • Knowledge of security best practices in software development and cloud environments.


  • Familiarity with monitoring and logging tools (e.g., New Relic, Prometheus, ELK stack).


  • Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent experience).


  • Certification in cloud platforms (e.g., AWS Certified Solutions Architect, Google Cloud Professional).

Why Aristocrat?


Aristocrat is a world leader in gaming content and technology, and a top-tier publisher of free-to-play mobile games. We deliver great performance for our B2B customers and bring joy to the lives of the millions of people who love to play our casino and mobile games. And while we focus on fun, we never forget our responsibilities. We strive to lead the way in responsible gameplay, and to lift the bar in company governance, employee wellbeing and sustainability. We’re a diverse business united by shared values and an inspiring mission to bring joy to life through the power of play.We aim to create an environment where individual differences are valued, and all employees have the opportunity to realize their potential.

We welcome and encourage applications from all people regardless of age, gender, race, ethnicity, cultural background, disability status or LGBTQ+ identity. We offer a range of flexible working options through all.flex, our flexible hybrid work model and invite you to have a conversation with us about flexible working. EEO M/F/D/V


  • World Leader in Gaming Entertainment

  • Robust benefits package

  • Global career opportunities

Our Values



  • All about the Player

  • Talent Unleashed

  • Collective Brilliance

  • Good Business Good Citizen

The US based roles may require registration with the Nevada Gaming Control Board (NGCB) and/or other gaming jurisdictions in which we operate.

Travel Expectations

None

Life at Aristocrat

Aristocrat Leisure Limited (Aristocrat) is a global entertainment and content creation company powered by technology to deliver world-leading casino and mobile games. Listed on the Australian Securities Exchange (ASX) where it is a top 20 company (ASX code: ALL), the business is headquartered in Sydney, Australia, with over 7800 employees working in more than 20 locations across the globe. Aristocrat offers a diverse range of products and services including electronic gaming machines, casino management systems, free-to-play mobile games and online real money games. Aristocrat has seven corporate functions and three operating business units, spanning regulated land-based gaming (Aristocrat Gaming), mobile games (Pixel United) and regulated online real money gaming (Anaxi). Our game and product portfolios collectively entertain millions of players worldwide every day. Across our global enterprise, Aristocrat aims to create long-term sustainable value for all stakeholders by upholding our core values and producing the world’s best gaming content. Our people-first mindset prioritises the safety and wellbeing of our people. We have ambitions to be an industry leader in responsible gameplay and we invest in employees’ development and offer career pathways, so they have what they need to do their best work at Aristocrat. Our values of Talent Unleashed, All About the Player, Collective Brilliance and Good Business, Good Citizen guide and inspire us every day. We are excited about the future of Aristocrat and united by our mission we invite everyone to join us as we…Bring joy to life through the power of play! You can learn more by visiting,
Thrive Here & What We Value1. Diverse business united by shared values and an inspiring mission to bring joy to life through the power of play.2. We welcome diversity of background, thought, and experience.3. Foster a fun environment that inspires creativity.4. Individual differences are valued; all employees have opportunities to realize their potential.5. Welcome applications from all people regardless of age, gender, race, ethnicity, cultural background, disability status or LGBTQ+ identity.6. People First: Respect for people and their well-beeing.7. MAD for More: Improving, innovating, pushing boundaries with courage and ambition.8. Champion Together: Excels at what they do but remains humble and helpful to teammates.9. Globally Inclusive: All Equal - regardless of language, location, gender, religion or culture.10. Customer Focused: Always thinking from the customer's perspective; improving their experience is what drives us.
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