Описание

This role involves modernizing a mission-critical last-mile delivery platform for a European logistics tech company by incrementally migrating a Java/Oracle backend to Python and PostgreSQL, rebuilding carrier integrations and keeping the live production system stable.

Responsibilities

Maintain and improve existing backend services while migrating functionality to Python and PostgreSQL
Participate in planning and executing an incremental migration of a production system
Refactor legacy code and introduce modern engineering practices
Develop and optimize PostgreSQL databases, queries, and data models
Rebuild critical carrier integrations using the new technology stack
Introduce automated unit and integration testing into legacy applications
Ensure high availability, performance, and reliability throughout the migration
Manage application deployments and production stability
Apply AI-assisted development tools to improve engineering productivity
Collaborate with Product Managers and engineering teams throughout the development lifecycle

Requirements

Extensive commercial experience with Python backend development
Advanced PostgreSQL expertise, including query optimization, database design, and complex data processing
Proven experience maintaining and modernizing legacy codebases
Hands-on experience with technology migrations or major system refactoring
Experience developing high-load, high-volume backend applications
Strong understanding of unit testing, integration testing, and test automation
Experience with Docker, REST APIs, Git, GitHub, and CI/CD pipelines
Practical experience using AI-assisted coding tools
Ability to independently manage technical tasks and production deployments
Strong communication skills and good English

Nice to have

Commercial experience with Java
Knowledge of Oracle databases
Experience with Google Cloud Platform
Familiarity with GitHub Actions or GCP Cloud Build
Background in logistics, delivery platforms, or e-commerce
Experience working in cross-functional product teams

We offer

Opportunity to work on a large-scale production platform
Challenging backend modernization and migration project
High technical ownership and autonomy
International engineering team
Remote B2B cooperation
Opportunity to contribute to long-term architectural improvements

Hiring process

Apply through Djinni and share your CV or LinkedIn profile