Senior Software Engineer, Python

The Codest

Senior Software Engineer specializing in Python and routing algorithms for The Codest, a tech company delivering global IT solutions. Focused on building impactful products and enhancing logistics efficiency.

Posted 7/7/2026full-timeWarsaw • 🇵🇱 PolandSenior💰 PLN 20,000 - PLN 25,000 per monthWebsite

Tech Stack

Tools & technologies

AirflowCloudGoogle Cloud PlatformKubernetesMicroservicesPostGISPythonSQLTerraform

About the role

Key responsibilities & impact

Support the design and scaling of high-throughput services that power our first and last-mile operations.
Leverage network analysis and spatial optimization to assist in building the next generation of Allegro's Delivery Optimization Engine (DOE) and enhance our logistics efficiency.
Utilize modern tech stack including cloud-native Python architectures, Big Data solutions, and modern routing APIs (e.g., Google, HERE, open-source routing engines).

Requirements

What you’ll need

At least 4 years of commercial experience in backend software development using Python and SQL.
Possess experience or a strong understanding of the logistics domain, network analysis, and routing (e.g., graph theory, road network modeling, Vehicle Routing Problems).
Experience with geospatial data concepts applied via code (e.g., H3/spatial indexing, clustering algorithms, PostGIS).
Be familiar with cloud ecosystems (Google Cloud Platform preferred) and modern infrastructure tools (Kubernetes, Terraform, Airflow).
Advocate for engineering excellence, including clean code, TDD, CI/CD, and a strong commitment to rigorous code reviews to maintain team architectural stability.
Know how to design and scale a microservices-based architecture.
A positive attitude, excellent teamwork skills, and a higher technical education (Computer Science or related fields).
English level min. B2+.
Required to work from the Warsaw office once a month.

Benefits

Comp & perks

20–25k PLN on a B2B contract
Paid days off on public holidays in the case of a monthly fixed-fee settlement
Access to the Worksmile platform, where you receive 300 PLN each month to spend on gift cards or various services
A work environment that values growth and innovation — you bring the ideas, and we want to hear them 😉

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Hard Skills & Tools

Python ProgrammingSQL Database ManagementGeospatial Data ConceptsNetwork AnalysisRouting AlgorithmsMicroservices ArchitectureClean Code PracticesTest-Driven Development (TDD)Continuous Integration/Continuous Deployment (CI/CD)Spatial Indexing

Soft Skills

Teamwork SkillsPositive Attitude