Backend Engineer

About betarchitectbetarchitect is a cutting-edge iGaming platform designed for operators committed to building and owning their unique gaming experiences. Our platform offers White Label and Turnkey Casino & Sportsbook infrastructure with event-driven, microservice architecture for scalability and flexibility.ResponsibilitiesDesign, build, and maintain high-load, high-performance microservices using NestJS and TypeScript.Architect system design, define domain models, and establish robust service-to-service communication contracts.Develop and manage complex integrations with external providers, payment gateways, and analytics pipelines.Optimize PostgreSQL and ClickHouse queries, and architect event-driven data flows utilizing Kafka or Redpanda.Collaborate closely with QA, Product, and DevOps teams to ensure seamless delivery and cross-functional alignment.Conduct thorough code reviews, mentor team members, and drive critical technical and architectural decision-making.RequirementsCore Backend & Architecture5+ years of commercial experience with Node.js and strong TypeScript skills.3+ years of hands-on experience building scalable microservices with NestJS.Solid mastery of Domain-Driven Design (DDD), SOLID principles, and Clean Architecture.Databases & Event-Driven ArchitectureAdvanced knowledge of PostgreSQL, including schema design, locks, execution plan analysis, and partitioning strategies.Proven experience building robust event-driven architectures utilizing Kafka or Redpanda.Deep understanding of message idempotency and the implementation of Outbox and Saga patterns.Financial SystemsExperience architecting and building highly secure Wallet and Ledger systems.Proven track record processing multi-currency transactions and implementing double-entry accounting principles.DevOps & Engineering PracticesHands-on familiarity with containerization and orchestration using Docker and Kubernetes.Experience working with Infrastructure as Code (Terraform) and building out CI/CD pipelines.Nice to HavePrior experience in iGaming, FinTech, Payments, or Banking domains.Experience working with ClickHouse for high-volume analytics.Experience implementing Change Data Capture (CDC) utilizing Debezium.Experience managing and building within Nx Monorepos.What We ExpectStrong ownership and accountability for delivered backend solutions.Ability to understand and work within complex business domains (Casino, Sportsbook, Payments).Strong focus on scalability, performance optimization, clean code, and long-term maintainability.Excellent communication and cross-team collaboration skills.Willingness to contribute to product and architecture evolution.Technology StackTypeScriptNode.jsNestJSPostgreSQLKafka / RedpandaClickHouseDocker & KubernetesTerraformDebeziumNx MonorepoWhat We OfferCompetitive RemunerationWork in a dynamic environmentGrowth and learning opportunities