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.
We are looking for a Senior Backend Software 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 backend services, working closely with other engineers and stakeholders. The work includes both hands-on development and architectural decision-making.
The position requires that you are able to work in Stockholm, Sweden. Relocation is not offered for this role.
Your responsibilities include
Building backend services for high-volume real-time aircraft telemetry
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
Backend services: C++ and Python
Cloud & Data Platform: AWS (S3, Glue/Spark, Airflow/MWAA, Athena, MSK/Kafka, Lambda)
Streaming & Messaging: Kafka, RabbitMQ
Databases & Storage: SQL/NoSQL systems (e.g., MySQL/MariaDB/Postgres, Redis, DynamoDB, Hazelcast)
DevOps & Platform: Docker, Kubernetes/EKS, Terraform
Engineering practices: Infrastructure as Code, CI/CD, linting, unit tests, integration tests
Required technical competence
Strong experience with software development in C++, Python, Go, Rust, (or similar)
Strong experience designing and operating production backend systems
Experience with data engineering architectures for ingestion and transformation
Experience working with cloud-based platforms, preferably AWS
Solid understanding of databases
Experience with event-driven or streaming architectures (Kafka or similar)
Strong understanding of reliability, observability, and production operations
Has several years of hands-on experience building and operating production systems
Is self-driven and comfortable making technical decisions independently
Can quickly understand and work within an existing codebase and architecture
Values clean code, testing, automation, and pragmatic engineering practices
Communicates 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
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.
All this is made possible thanks to our globally distributed network of 55,000+ radio receivers that feed real-time aircraft data into the Flightradar24 platform. Over a billion database entries are added each month and we are processing several years of historical data totalling many terabytes. Our proprietary flight tracking data is industry leading and even investigative government agencies from around the world rely on it for aviation accident investigations.
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
