Harness Engineer: AI Platform & DevOps Lead (Hybrid)

Santander; Madrid; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work model

Global learning platform access

Competitive salary with bonuses

Health & wellbeing programs

Childcare support

Job summary

Santander is seeking a senior Harness Engineer to design and deliver secure, production-grade harnesses enabling coding agents across the Knowledge Base Platform and related solutions.

You will define architecture, integrate with Git workflows, CI/CD, observability, and cloud environments, while mentoring teams and establishing reusable patterns.

The role requires 8+ years in software/AI engineering, strong leadership, Python and AWS experience, with a focus on secure SDLC and governance.

Qualifications

• 8+ years in software/platform/DevOps/AI engineering or related fields.
• Proven leadership delivering developer platforms or AI-assisted workflows.
• Hands-on with coding agents, LLM-based tools, orchestration, and human-in-the-loop workflows.

Responsibilities

• Define harness architecture across teams and platforms.
• Integrate agents with Git, IDEs, CI/CD, observability, and cloud environments.
• Mentor teams and create reusable patterns, playbooks, and reference architectures.
• Establish secure SDLC guardrails for code, secrets, data, and tooling.

Skills

Software engineering

Cloud engineering

AI engineering

DevOps

Python

Leadership

Education

BSc/MSc in Computer Science

Tools

Git

CI/CD tools

AWS

Kubernetes

Job description

Santander is seeking a senior Harness Engineer to design and deliver secure, production-grade harnesses enabling coding agents across the Knowledge Base Platform and related solutions.

You will define architecture, integrate with Git workflows, CI/CD, observability, and cloud environments, while mentoring teams and establishing reusable patterns.

The role requires 8+ years in software/AI engineering, strong leadership, Python and AWS experience, with a focus on secure SDLC and governance.