Senior Software Engineer, Python

Jobtailor; Warszawa; On-site; PLN 180,000 - 260,000; Full time

Job summary

Jobtailor is seeking an experienced Backend Engineer to design and scale high-throughput Python services powering our delivery operations. You will apply network analysis and geospatial techniques to optimize routing and logistics, leveraging cloud-native architectures and modern routing APIs.

Required are 4+ years of Python/SQL backend experience, familiarity with cloud ecosystems (GCP preferred) and tools like Kubernetes, Terraform and Airflow.

Qualifications

• At least 4 years of commercial experience in backend software development using Python and SQL.
• Experience with logistics domain, network analysis, and routing (graph theory, road network modeling, VRP).
• Experience with geospatial data concepts via code (H3, spatial indexing, clustering, PostGIS).
• Familiar with cloud ecosystems (Google Cloud Platform preferred) and infra tools (Kubernetes, Terraform, Airflow).
• Advocate for engineering excellence with clean code, TDD, CI/CD, and rigorous code reviews.

Responsibilities

• Support the design and scaling of high-throughput services powering our first and last-mile operations.
• Leverage network analysis and spatial optimization to build and enhance our Delivery Optimization Engine and logistics efficiency.
• Utilize cloud-native Python architectures, Big Data solutions, and modern routing APIs (Google, HERE, open-source routing engines).

Skills

Python

SQL

Network analysis

Routing

Geospatial data

Cloud ecosystems

Kubernetes

Terraform

Airflow

TDD/CI/CD

Microservices

English (B2+)

Team collaboration

Education

Bachelor's degree in Computer Science or related field

Tools

PostGIS

Google Cloud Platform

Kubernetes

Terraform

Airflow

H3 spatial indexing

Job description

Responsibilities

• 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

• 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.