Python or Java | SQL | TB-scale flight data | Aviation AI
At StorkJet, we build software that helps airlines reduce fuel consumption and CO₂ emissions by processing high-volume flight and operational data. This is not a pure maintenance role. We are looking for a senior/expert engineer who wants to modernize and evolve production backend/data-processing systems, improve architecture, and work on performance-heavy data workflows used by airline customers.
You will work with real aviation data, including second-by-second flight recorder data, and help turn it into reliable products used by airlines, pilots, fuel-efficiency teams and operational experts.
What you will own
- Design, build and modernize backend services and data-processing components in Python and/or Java.
- Work on incremental rewrites and modernization of selected production systems, with a focus on reliability, testability and maintainability.
- Build and optimize batch and real-time data processing pipelines for high-volume aviation datasets.
- Work deeply with relational databases: query optimization, indexing, partitioning, schema design, bulk loading, migrations, data retention and performance monitoring.
- Build secure APIs and integrations with airline/customer systems.
- Improve observability, CI/CD and customer onboarding automation.
- Collaborate with backend engineers, data scientists, aviation experts and product people to design algorithms and workflows that optimize airline operations.
Our stack and technical areas
- Python: SQLAlchemy, Pandas, data-processing scripts and services.
- Java: Spring Boot, Apache Camel.
- Databases: MariaDB, SQL performance tuning, indexing, partitioning, query plans, schema design, migrations, replication, large-table operations.
- Data and integration: batch processing, real-time workflows, ETL/ELT, CDC/binlog-based processing, bulk data loading, data validation, data quality checks, idempotent pipelines, orchestration, Data Warehouse and OLAP workloads.
- Data domains we work with: flight and aircraft operational data, geospatial data, OpenStreetMap, weather data including ECMWF, currency and external reference-data feeds.
- Operations and observability: Docker, Linux, Bash, GitLab CI/CD, ELK, Grafana, application performance monitoring, logs/metrics/tracing, production troubleshooting.
- Infrastructure exposure: Ansible, VMware/Proxmox, networking basics, IPSec/VPN-based customer integrations, secure system-to-system connectivity.
What we expect
- 5+ years of commercial backend/software engineering experience.
- Strong production experience in Python or Java.
- Willingness to work across both ecosystems; expertise in both is welcome but not required from day one.
- Strong SQL skills and practical experience with production databases.
- Experience designing, debugging and improving systems running in production.
- Ability to reason about performance, reliability, data quality and security.
- Ownership mindset: you can break down ambiguous modernization work, propose trade-offs and deliver safely.
- Good communication skills in English, B2+.
Nice to have
- Experience with TB-scale relational databases, large tables, analytical workloads, partitioning, indexing and query optimization.
- Experience with high-volume ETL/ELT, batch processing, CDC, replication or binlog-based workflows.
- Experience with Kafka or other message/event-processing systems.
- Experience with Data Warehouse / OLAP concepts, data modelling, aggregation pipelines or reporting-oriented datasets.
- Experience with production observability, performance debugging, profiling, alerting and incident analysis.
- Familiarity with GitLab CI/CD and secure deployment practices.
Financial offer
Senior:
- CoE: 15 200 – 20 200 pln gross
- B2B: 16 950 – 22 500 pln netto + VAT
Expert:
- CoE: 18 900 – 28 200 pln gross
- B2B: 21 100 – 31 400 pln netto + VAT
What do we offer
- A real say in tech decisions and space for your ideas.
- Possibility to join the Employee Stock Option Plan (ESOP).
- Training budget, language classes, internal tech talks, referral program.
- Flexible hours and a modern office in the heart of Katowice.
- Fully equipped kitchen (with an oatmeal station – we take breakfasts seriously).
- Private healthcare and/or Multisport card.
- Regular, unconventional company events, friendly atmosphere – we’re not a corporation.
Need More Info? We’re here to answer any questions you have about your future adventure with StorkJet! Contact us 📩
[email protected].
Polish
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