Middle 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: This role exists to scale and stabilize the core data infrastructure powering our real-time analytics and decision systems. You’ll help us deliver accurate, zero-latency business insights by designing robust ingestion pipelines, building clean semantic models, and maintaining rock-solid data governance across the platform. WHAT YOU’LL DRIVE: Architecture & Data Modeling - Design and implement scalable data transformation layers, organizing raw data into validated, production-grade data marts. - Build and optimize semantic layer models, ensuring consistent metrics and definitions across all reporting surfaces. - Establish data modeling standards utilizing optimal storage formats (Parquet, ORC, AVRO) and storage engines (PostgreSQL, ClickHouse, Redshift/BigQuery). Pipeline Delivery & Execution - Ship and maintain end-to-end data ingestion pipelines integrating internal services and third-party event streams (Kafka, Kinesis, external APIs). - Automate data quality and integrity testing to catch pipeline breaks and silent schema drifts before they reach downstream consumers. - Tune query performance and pipeline bottlenecks, actively managing indexing, data partitioning, and job scheduling. Platform Operations & Integration - Expose data-centric services by building and managing performant REST APIs using modern frameworks (FastAPI, Flask, or Aiohttp). - Enforce granular access control across our data layers via RBAC, row-level security (RLS), and column-level masking. - Automate CI/CD workflows and deployments using Docker, GitLab CI, and Terraform across our cloud infrastructure. Engineering Quality & Cross-Team Alignment - Partner with product managers, software engineers, and analysts to translate business logic into maintainable technical requirements. - Participate in thorough code and architecture reviews, upholding strict testing standards (unit, integration, TDD/BDD). - Document system designs and data catalog schemas, making data discoverable and self-serve across the organization. WHAT MAKES YOU A GR8 FIT: Must-have - 3+ years of production experience in Data Engineering, Software Engineering, or related distributed data systems. - Proven SQL & Database expertise: Strong hands-on work with relational databases (PostgreSQL) and modern analytical/columnar data warehouses (ClickHouse, BigQuery, or Redshift). - Demonstrated pipeline & distributed compute skills: Practical experience orchestrating distributed jobs (Spark, Trino, Flink) and handling event streaming engines (Kafka, RabbitMQ, or Kinesis). - Solid software engineering foundations: Proficient in writing clean, modular Python for data applications, pipeline orchestration, and REST APIs. - Linux, Container, & CI/CD literacy: Comfortable writing Dockerfiles, configuring CI/CD pipelines (GitLab CI, GitHub Actions), and utilizing Git version control. - Data quality discipline: Direct experience implementing automated data testing, schema validation, and pipeline observability. Nice-to-have - Hands-on experience with Infrastructure as Code (Terraform) and AWS cloud services. - Practical exposure to metadata management tools (DataHub, OpenMetadata). - Understanding of resilience patterns in distributed systems (circuit breakers, rate limiting, connection pooling). - Degree in Computer Science, Software Engineering, or equivalent practical experience. 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.