Senior Backend Engineer (Core Team)

The role

This role focuses on building, optimising, and scaling backend services in a high-load system. You will work on complex, real-time challenges at the core of the platform to improve latency and ensure high availability.

What you will do

• Work as part of a cross-functional team owning a core product within the platform
• Design, build, and deliver new backend features end-to-end in a distributed environment
• Write high-quality, production-level code daily
• Take ownership of services handling financial transactions at scale
• Proactively suggest and implement improvements in architecture, processes, and development practices
• Participate in code and architectural reviews
• Solve complex business and technical challenges
• Participate in on-call rotations within the squad
• Play an active role in ongoing tech transformation initiatives
• Collaborate with engineers, product, and other stakeholders

Required qualifications

• Solid experience with Node.js/TypeScript or other OOP languages such as Java, Python, C++, C#, or Go
• Strong understanding of asynchronous programming techniques
• Deep production experience with Kafka
• Experience designing idempotent, retry-safe handlers for at-least-once pipelines
• Experience building services with gRPC or similar RPC frameworks
• Strong knowledge of relational databases such as MySQL or PostgreSQL
• Production experience with at least one NoSQL technology at scale, such as DynamoDB, MongoDB, or Redis
• Hands-on experience running services on Kubernetes and AWS/GCP
• Production operations experience including on-call ownership of a high-load system

Nice to have

• Experience with ClickHouse or other columnar/analytical databases
• Experience with multi-region / failover architectures
• Practical use of AI coding agents such as Cursor or Claude Code
• Understanding of application security and industry best practices
• Gambling domain experience

Benefits

• Competitive Salary
• Quarterly Bonuses
• Unlimited Paid Time Off
• Unlimited Paid Sick Leave
• Remote & Flexible Working
• Private Medical Insurance
• Financial Support for Life Events
• Professional Development Budget
• International Exposure
• Regular Company Events

Before you apply

• HR interview (30-45mins)
• Interview with a Hiring Manager (45mins)
• Technical interview with live coding (90mins)
• Final Interview with C-level (60 mins)

About the company

playson is a company looking for a Senior Backend Developer to work in a deeply hands-on environment on a high-load system.