Senior Back end Developer - Python - FREELANCE

Pixie Services

Málaga

Hybrid

EUR 83,000 - 124,000

Full time

9 days ago

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Job summary

Pixie Services in Málaga, Spain is seeking a Senior Back-End Developer (Python) for a freelance project focused on AI agents, LangGraph and MCP connectors. You will define and validate technical specifications and contribute to architectural decisions.

The role requires autonomous work, strong Python backend skills, and experience with tool calling, SDD and execution engines. Hybrid work arrangement offered.

Qualifications

Strong experience in Python back-end development.
Knowledge of Specification-Driven Development (SDD).
Experience with AI agents and tool calling.
Knowledge of LangGraph.
Ability to work autonomously and exercise independent technical judgment.
Experience reviewing code, specifications and acceptance criteria.

Responsibilities

Python back-end development.
AI agents and agent-based workflows.
LangGraph.
Tool calling.
MCP connectors.
Specification-Driven Development (SDD).
Execution engines.
Technical specifications and acceptance criteria.
Code reviews and design validation.
Technical decision-making and architectural alignment.

Skills

Python back-end development

AI agents

LangGraph

Tool calling

MCP connectors

Specification-Driven Development (SDD)

Execution engines

Technical specs & acceptance criteria

Code reviews

Architectural decisions

Tools

LangGraph

MCP connectors

Tool calling

Job description

We are looking for a Senior Back-End Developer (Python)

We are looking for an experienced Senior Back-End Developer with strong Python skills to join a project focused on AI agents, tool calling and LangGraph. The role involves developing solutions using execution engines and MCP connectors, following Specification-Driven Development (SDD), and ensuring high-quality technical specifications and implementation.

What do we offer?

Freelance project

Location: Málaga, Spain · Hybrid

English level B2

SENIOR BACK-END DEVELOPER (PYTHON)

We are looking for a Senior Back-End Developer with experience in Python, AI agents and modern AI development frameworks. The ideal candidate will be able to work autonomously, define and validate technical specifications, and contribute to technical reviews and architectural decisions.