Senior Backend Engineer - Python, API & Optimization

Expereo; Barcelona; Híbrido; EUR 65.000 - 90.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid Working

25 Days Holidays

Pension Plan

Global Network Exposure

Descripción de la vacante

Expereo is seeking a Backend Developer to join the Supplier onboarding and Quote Management teams and work directly on the computational core of our platform.

You will write Python and/or dotnet every day, enhancing an existing Python/C# backend, creating new services, and solving real-world business problems including a constraint optimization engine and integrations with our partners.

Formación

• Advanced Python is mandatory: clean, tested, reusable code.
• REST APIs with clear contracts, versioning, and proper error handling.
• Strong software engineering discipline: testing, code review, Git, CI.
• Ability to work in a mixed-language codebase (Python/C#).

Responsabilidades

• Implement and maintain the quote engine logic, partner integrations, and internal services.
• Explore and integrate external data sources needed for business logic.
• Ensure outputs are auditable and explainable to stakeholders.
• Validate model outputs against historical data and measure prediction reliability.
• Collaborate with Commercial teams and Platform engineers on integration and design.

Conocimientos

Advanced Python

API design & implementation

Software engineering discipline

Mixed-language codebase

REST APIs

Herramientas

AWS

OpenAPI/Swagger

Pydantic

Descripción del empleo

Expereo is seeking a Backend Developer to join the Supplier onboarding and Quote Management teams and work directly on the computational core of our platform.

You will write Python and/or dotnet every day, enhancing an existing Python/C# backend, creating new services, and solving real-world business problems including a constraint optimization engine and integrations with our partners.