Data Engineer

Data Engineer Join Holafly as a Data Engineer to build scalable ETL pipelines, fast APIs, and reliable data models that empower real-time decisions for travelers worldwide. Company Overview Holafly is a high-growth scale-up revolutionising how businesses and travellers connect to the internet abroad. Since 2018, we’ve empowered travellers in over 200 destinations worldwide with secure and reliable eSIM solutions. With a team of 500+ professionals across multiple countries, we are scaling globally to support travellers with seamless, unlimited data connectivity. We’re not just connecting people—we’re enabling freedom and peace of mind, ensuring our users stay connected from the second they land, wherever their journey takes them. The Role As our Data Engineer, you will build and scale the high-performance pipelines and data services that turn raw connectivity data into actionable intelligence. Your work directly enables our leadership and product teams to make real-time, data-driven decisions that fuel our international growth. Key Responsibilities Build and scale robust ETL/ELT pipelines to integrate diverse data sources into a unified, high-availability ecosystem. Develop and maintain high-performance APIs using FastAPI to expose data insights to internal services and stakeholders. Lead data transformations by using DBT to ensure our warehouse is structured, modular, and ready for high-level analysis. Optimise data structures and schemas to ensure lightning-fast query performance for analytical and operational use cases. Automate data validation and cleansing processes to guarantee the highest standards of data integrity and security. Drive technical innovation by implementing modern frameworks that enhance our processing capabilities and data reliability. Qualifications Proven track record in Data Engineering or a similar back-end heavy role within high-growth environments. Advanced proficiency in Python, with specific experience building and deploying APIs using FastAPI. Deep expertise in DBT, with a focus on building scalable and maintainable transformation layers. Strong mastery of SQL for building complex data software and manipulating large datasets. Solid understanding of modern data modelling and cloud-based warehousing architecture (GCP and BigQuery preferred). Nice to Have Experience with Google Dataflow or Apache Beam. Background in Infrastructure as Code (IaC) or CI/CD for data workflows. Hybrid Modality We focus on trust and performance. We are implementing a Two phased approach for our Hybrid Modality: Phase 1: While the teams are establishing ways of working, building trust, and developing their rhythm, we ask that you’re present in the office Three days a week. In-person proximity is key to accelerating the forming stage. Phase 2: Once teams are performing, we move to a more relaxed hybrid model. We ask for a minimum of one day per week in the office, centred around critical ceremonies such as sprint planning, reviews, and retrospectives. Benefits & Perks 25 Days of PTO 5% pension contribution € 3000 for Medical/Health coverage Self development budget of $ 500 Department Data Role Data Engineer Locations Dublin Remote status Hybrid Employment type Full-time Employment level Executive/Senior Level About Holafly During a trip to Thailand, Pedro and Lidia, the founders of Holafly, experienced the frustration of not having an internet connection. Inspired by their own experiences, they came up with a simple but brilliant idea: why not allow travellers to buy data plans for any destination from their home country? Our passion for providing easy and convenient connectivity to travellers around the world drives everything we do. We love our work and we do it with pride. Stay connected wherever you go. Founded in 2017 Co-workers 600