Senior Data Engineer

Flightradar24 is one of the most successful growth-stage tech companies in Stockholm. Each day more than 5 million aviation enthusiasts visit Flightradar24 (app/website) and our Commercial services team has many of the biggest names in aviation on its customer list. About the role We are looking for a Senior Data Engineer, who can quickly understand existing systems, work independently, and deliver value from day one. You will play a key role in evolving and improving our data platform, working closely with other engineers and stakeholders. You will be part of a data engineering team responsible for designing, building, and operating scalable data solutions in AWS. The work includes both hands-on development and architectural decision-making. The position requires that you are able to work in Stockholm, Sweden. Your responsibilities include - Designing and improving data ingestion, streaming, and event processing (batch and real-time) - Refactoring and enhancing existing services, pipelines, and infrastructure - Implementing robust data collection, transformation, and storage solutions - Operating and improving cloud-based platforms (primarily AWS) - Improving observability, reliability, and operational tooling for production systems - Contributing to best practices around CI/CD, testing, code quality, and documentation - Collaborating with software engineers, data engineers, and analysts to deliver reliable data products Current tech stack - Cloud & Data Platform: AWS (S3, Glue/Spark, Airflow/MWAA, Athena, MSK/Kafka, Lambda) - Streaming & Messaging: Kafka (or similar), RabbitMQ - Databases & Storage: SQL/NoSQL systems (e.g., MySQL/MariaDB/Postgres, Redis, DynamoDB, data lake/warehouse patterns) - DevOps & Platform: Docker, Kubernetes/EKS, Terraform - Engineering practices: Infrastructure as Code, CI/CD, linting, unit tests, integration tests About you - Experience with data engineering architectures for ingestion and transformation - Several years of hands-on experience building and operating production systems - Experience working with cloud-based platforms, preferably AWS - Solid understanding of databases (warehouses, OLTP/OLAP concepts, query performance) - Experience with event-driven or streaming architectures (Kafka or similar) - Strong understanding of reliability, observability, and production operations We also see that you… - Are self-driven and comfortable making technical decisions independently - Can quickly understand and work within an existing codebase and architecture - Value clean code, testing, automation, and pragmatic engineering practices - Communicate clearly and professionally in English Bonus points - Experience with Machine Learning concepts and data platforms supporting ML workloads - Experience working with high-volume real-time telemetry or tracking data - Domain knowledge in aviation data standards (e.g., ADS-B) or similar More about Flightradar24 Flightradar24 is the leading flight tracking and aviation data provider, leveraging the world’s largest ADS-B network. Our B2C platform serves millions, while our B2B solutions empower airlines, airports, and aviation stakeholders with essential operational insights. Benefits of working at Flightradar24 include: - Opportunity to impact a service with millions of end users from all around the world - Contribute to the value which Flightradar24 creates both for B2C and B2B but also for humanity. - Modern office in the heart of beautiful downtown Stockholm, Sweden - Being part of a diverse team - Flexible and social work environment with free beverages, fruit, and snacks Flightradar24 is working together with Safemind as the exclusive recruitment partner for this position