Senior Backend Engineer

Sportech is developing a cutting-edge digital infrastructure platform for sports clubs, leagues, academies, and federations worldwide. This platform empowers organizations to create their own branded fan engagement ecosystems, featuring memberships, livestream monetization, digital gifting, ticketing, prediction tools, merchandise, and interactive experiences. All offerings operate under a revenue-sharing model with no upfront costs for partners. We are seeking a Senior Backend Engineer to design, scale, and maintain high-throughput, mission-critical distributed systems that support millions of concurrent users. This role involves leading the architecture of core platform domains, including real-time event streaming, financial ledgers, complex sports data ingestion pipelines, and identity services.

Key Responsibilities
- Architect resilient, low-latency microservices in Go that can handle peak burst traffic during major live events.
- Build and optimize end-to-end data ingestion pipelines, WebSocket/SSE engines, and event streams for real-time match processing, analytics, and instant state synchronization.
- Design double-entry wallet and ledger architectures, token economies, and payment pipelines ensuring zero-loss consistency, idempotency, and full auditability.
- Manage database modeling, partitioning strategies such as sharding and range partitioning, query optimization, and connection lifecycle management in high-load PostgreSQL environments.
- Enforce enterprise-grade security standards across identity management (OAuth 2.0/OIDC), personally identifiable information (PII) protection, and compliance with PCI-DSS, SOC 2, and KYC regulations.
- Implement comprehensive distributed tracing, metrics, and alerting systems to maintain 99.99% uptime under volatile and high-load conditions.
- Lead system design reviews, promote engineering best practices, and mentor intermediate engineers within backend squads.

Required Qualifications
- Over 5 years of production experience designing and operating large-scale distributed systems capable of handling high queries per second (QPS) and millions of active users.
- Deep expertise in Go, including concurrency primitives (goroutines, worker pools, channels, sync packages), memory management, profiling tools like pprof, and production-grade database drivers such as pgx/v5.
- Advanced knowledge of PostgreSQL, including indexing, locking mechanisms, window functions, JSONB optimization, range partitioning, and live migration strategies with zero downtime.
- Extensive experience with real-time and asynchronous patterns, including message brokers and event streaming platforms like Kafka, RabbitMQ, and Redis Streams, as well as client protocols such as WebSocket, SSE, and gRPC.
- Strong foundation in security and authentication, including decentralized identity patterns, token lifecycle management, role-based access control (RBAC), and secure webhook architectures.

Preferred Qualifications and Benefits
- Experience building distributed double-entry ledgers, transactional wallets, or high-volume payment processing engines.
- Hands-on experience working with high-frequency sports data feeds and dynamic leaderboard calculation engines.
- Proven ability to decouple monolithic architectures into scalable, event-driven microservices.

We offer remote work flexibility, competitive compensation, and opportunities for professional growth within a dynamic and innovative environment. Join us to help shape the future of sports fan engagement through robust and scalable backend systems.