Senior Data Engineer

GR8 Tech builds B2B iGaming platforms for operators who play to lead. We deliver full-cycle, high-impact tech designed to scale — from seamless integrations and expert consulting to long-term operational support. Our platform powers millions of active players and drives real business growth. Call it what it is: the iGaming Platform for Champions. With 1000+ GR8 people across locations and time zones, we don’t just ship technology — we help operators build success stories across brands, markets, and geos. Our ambition drives us. Our people make it real. If you’re a challenger in spirit and a champion in action — join us. Why this role exists: We’re looking for a Senior Data Engineer to design and operate a scalable data infrastructure powering a high-throughput, production-grade platform. You will own data systems that support analytics, operational workloads, and ML-driven capabilities across a multi-tenant environment. This is a hands-on senior role with architectural responsibility and end-to-end ownership under strict reliability, performance, and SLA requirements. You will influence core data architecture decisions and help evolve the platform to support growing scale and complexity. What you’ll drive: Core Responsibilities • Design and operate batch and streaming data pipelines. • Architect and evolve data storage layers (lake, analytical, operational). • Develop scalable data models for analytics, ML, and operational systems. • Ensure data quality, consistency, and observability across pipelines. Platform & Reliability • Implement real-time processing using event-driven architectures. • Build ingestion and transformation workflows (ETL/ELT). • Own backfills, reprocessing strategies, and data migrations. • Implement CI/CD, monitoring, and SLA-driven operational practices. Collaboration • Partner with engineers, analysts, and data scientists to design reliable and scalable data solutions. • Contribute to data platform standards and best practices. Technical Environment • Core: Python, SQL • Streaming: Kafka • Storage: PostgreSQL, Redis (ElastiCache), S3 • Analytics: AWS Athena, Starrocks • Vector: PostgreSQL + pgvector • Infrastructure: AWS, batch orchestration What makes you a GR8 fit: Must-have • 5+ years of experience building and operating production-grade data systems under SLA constraints. • Strong proficiency in SQL and Python. • Hands-on experience with streaming systems (Kafka or similar). • Experience with batch processing and workflow orchestration. • Production experience with relational databases (PostgreSQL or similar), including performance tuning, indexing, and partitioning. • Experience designing high-throughput and low-latency systems. • Solid understanding of point-in-time correctness and reproducible data pipelines. • Experience with caching systems (Redis or similar). • Cloud experience (AWS preferred). • Experience with analytical engines (Athena, StarRocks, ClickHouse, or similar). • Experience with distributed processing frameworks (Spark, Flink, Beam, or similar). • Experience implementing data quality frameworks and CI/CD for data pipelines. • Familiarity with vector databases or columnar storage systems. Nice-to-have • Experience supporting ML workloads (e.g., feature pipelines or feature storage patterns). • Familiarity with training-serving consistency concepts. • Experience building shared data platform components. • Experience building lightweight data-serving APIs (e.g., FastAPI). • Experience working with containerized environments (e.g., Docker). Why you’ll love working here:  Benefits Cafeteria — annual budget you allocate to:Sports • Medical • Mental health • Home office • Languages. Work-life & support • Paid maternity/paternity leave + monthly childcare allowance. • 20+ vacation days, unlimited sick leave, emergency time off. • Remote-first + tech support + coworking compensation. • Team events (online/offline/offsite). • Learning culture with internal courses + growth programs. Our culture & core values: GR8 Tech culture is how we win — through trust, ownership, and a growth mindset. We move fast, stay curious, and keep it real, with open feedback, room to experiment, and a team that’s got your back. FUELLED BY TRUST: we’re open, honest, and have each other’s backs. OWN YOUR GAME: we take initiative and own what we do. ACCELER8: we move fast, focus smart, and keep it simple. CHALLENGE ACCEPTED: we grow through challenges and stay curious. BULLETPROOF: we’re resilient, ready, and always have a plan.