Senior Data Engineer

Flightradar24 is one of the most successful growth-stage tech companies in Stockholm. Each month more than 50 million aviation enthusiasts visit Flightradar24 (app/website) and our Commercial services team has many of the biggest names in aviation on its customer list. The position requires that you are able to work from our office in Stockholm, Sweden. Relocation is not offered for this role. What you’ll do 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

About Flightradar24 With over 4 million daily users, Flightradar24 is the world’s most popular flight tracking service. Our app regularly tops the App Store and Google Play Travel charts. We also offer a wide range of commercial services and our customers include many of the biggest names in aviation. We're constantly adding new services and improving existing products. To help us meet those challenges, we're looking for creative, collaborative and tech-savvy applicants to join us. Benefits of working at Flightradar24 include:

• Opportunity to impact a service with millions of end users from all around the world
• Flexible and social work environment with free beverages, fruit, and snacks
• Modern office in the heart of beautiful downtown Stockholm, Sweden
• Being part of a diverse team with +30 nationalities and 6 continents represented with English being our main language

Flightradar24 started as a hobby project in 2006 when two Swedish aviation geeks decided to build a network of ADS-B receivers in Northern and Central Europe. In 2009 we opened up the network, and made it possible for anyone with an ADS-B receiver to upload data to the network. Many parts of the world were quickly covered, but the quest to provide global ADS-B coverage is still ongoing. Flightradar24 at a glance

• Largest ADS-B network in the world with over 55,000 connected receivers
• 5+ million users per day
• 100+ million app downloads