Senior / Strong Middle Backend Developer

Senior / Strong Middle Backend Developer

We are expanding our engineering team and looking for a Senior / Strong Middle Backend Developer with substantial hands-on experience in iGaming.

iGaming experience is a mandatory requirement.

The domain itself is more complex than the development work: bonus wagering, payment cascading, jurisdictional restrictions, anti-fraud, and compliance requirements are all part of the day-to-day reality. You are expected to understand these concepts before starting work on the relevant tasks. We are not looking for someone who needs to learn the iGaming domain from scratch.

The product is already live and actively evolving. You will own a specific area of the product end-to-end and be responsible for its outcome, rather than simply working through a stream of small, isolated tasks.

Tech Stack

Core — daily work

• Node.js 20+
• TypeScript with strict typing
• PostgreSQL as the primary data store — schema design, migrations, and query optimization
• Drizzle ORM, with direct SQL where using an ORM would be excessive
• Redis for caching and inter-service event communication (Pub/Sub)
• Microservice architecture — 20+ services, with a shared data model and common utilities extracted into versioned libraries
• Express
• REST APIs
• WebSockets for real-time communication

Infrastructure — confident working knowledge required

• Docker
• Kubernetes
• Helm
• GitLab CI — build and deployment triggered by merges
• HashiCorp Vault — service- and environment-specific secret management
• Nginx / Ingress controllers

Nice to have

• React, Vite, Tailwind CSS
• ClickHouse and analytical data marts
• Monitoring and alerting built around the event bus

Requirements

• 4+ years of commercial backend development experience, including at least 2 years in iGaming — casino, sportsbook, poker, or lottery products
• Experience working on production systems, not educational or demo projects
• Strong proficiency in Node.js and TypeScript
• Deep knowledge of PostgreSQL, including:
  • database schema design
  • running migrations on live production databases
  • query optimization on large data volumes
• Hands-on experience designing and operating microservices and inter-service event communication, including:
  • message queues or event buses
  • idempotency
  • delivery-order guarantees
  • handling message loss and failures
• Practical experience with Docker
• Kubernetes knowledge sufficient for independent troubleshooting, including working with logs, pods, deployments, and configuration
• Strong expertise in at least one major iGaming domain, such as:
  • bonuses and wagering
  • payments and PSP integrations
  • game content aggregator integrations
  • KYC/AML
  • responsible gambling tools
  • affiliate programs and CPA models
• Ability to independently break down complex tasks: take a high-level requirement, identify missing information, clarify what is needed, and return a structured implementation plan with an effort estimate

Nice to Have

• Experience with white-label and multi-brand platforms, including:
  • brand resolution
  • data isolation
  • brand-level configuration
• Experience integrating external providers:
  • game content aggregators
  • payment gateways and PSPs
  • KYC providers
  • SMS and email services
• Experience working in a licensed iGaming environment and participating in audits
• Experience handling high-volume financial operations, including transactions, locking, reconciliation, and consistency guarantees

How We Work

All tasks are managed through a project tracker and picked up from there — not from chat messages or ad-hoc conversations.

Our workflow is:

Specification & estimate → Development → Code review → Testing → Release

Code review is mandatory, but it is designed not to become a bottleneck. Reviewers may batch reviews and review multiple changes together. Once a merge request has been submitted, the developer moves on to the next task rather than waiting for the review to be completed.

The team already includes dedicated QA engineers, designers, and a DevOps engineer, so the backend developer can focus on backend development and ownership of their area.

Estimates are agreed and recorded upfront. After completion, we compare the actual effort against the original estimate to improve future planning.

About the Project

The product has evolved rapidly, and as a result, there is technical debt — as is common with systems that have grown faster than they have been systematically refactored.

The technical debt is identified, documented, and being addressed according to an established plan. We believe it is important to be transparent about this from the beginning.

If your priority is joining a project with a completely clean and fully polished codebase, this project may not be the right fit.

If you are interested in working with a live, actively evolving system and having a real impact on its architecture and technical direction, we would be happy to talk.