About the role
We are looking for a

Senior Backend Engineer

to join an

AI Engineering team

within a large international technology environment.

In this role, you will design, build, and operate robust

Python backend services

that power

AI-enabled applications

and reusable engineering capabilities across a complex

enterprise ecosystem .

This is a highly hands‑on

senior individual contributor

position, focused on solving real

production challenges , making sound

architectural decisions , and turning

AI and data‑science capabilities

into secure, reliable, scalable, and maintainable software.

You will take ownership of

backend services

from initial

design

through

production operation , working closely with

Data Scientists, Product Managers, Platform Engineers, Security Specialists, and Architects .

If you enjoy building

production‑grade Python services , designing

APIs

and

distributed systems , working with

AWS , and integrating

AI/LLM capabilities

into real‑world applications, this could be a great fit.

What you’ll do

Design, build, and maintain scalable





backend services

and

APIs

using

Python

Own

backend services

end‑to‑end, from

architecture

and

implementation

through

deployment

and

production operation

Integrate

AI models ,

Large Language Models (LLMs) , and

Machine Learning services

into

production systems

Define

service boundaries ,

data models ,

persistence strategies , and

integration contracts

Design resilient

distributed systems

with appropriate

failure handling ,

retries ,

fallbacks ,

rate limits , and

asynchronous processing

Work with

relational databases ,

data modelling ,

schema evolution , and

persistence strategies

Deploy and operate

backend services

in

AWS cloud environments

Design services with

reliability ,

security ,

observability ,

performance , and

cost

in mind

Handle production

AI concerns

such as

latency ,

structured outputs ,

sensitive data ,

model failures

📌 Senior Python Backend Engineer (Madrid)
🏢 Capitole
📍 Madrid