Senior Platform Engineer – Agentic AI & Harness Engineering

Location: Madrid, Spain

Remote Type: Partially Remote

Time Type: Full time

Job Description

Who We Are

At Kyndryl, we run and reimagine the mission-critical technology systems that drive advantage for the world’s leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of AI-powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people—Kyndryls—that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well-being is prioritized and your potential can thrive.

The Role

Infrastructure Architects are the key link between Kyndryl and our clients. You’re in a technical leadership role, uniting and guiding stakeholders from clients, governance, and project executives to delivery and sometimes even the vendors who work with the client. You’ll be there from the start of a project — understanding what’s needed and figuring out the best technical solution. And you’ll be there at the finish, delivering the right product on time and within budget.

As an Infrastructure Architect, you’ll draw upon the full breadth of your talent and experience. This is a technical leadership role, so we want you to bring your vision, knowledge, and leadership to each project. To the client, you’re the subject matter expert – consulting early, gathering inputs, understanding what they need from our solution. You define what Kyndryl can do to meet this solution. You design the best solution for the job. And finally, you’re the tech leader for implementation.

At Kyndryl we support all major cloud platforms, so you’ll get the chance to use everything you know – and then some. You’ll also become expert at knowing when and how to call on other SMEs outside your wheelhouse. Thinking your way around pre-existing limitations will grow your creativity and flexibility. You’ll learn a lot here, and if you want to work toward certifications there are plenty of opportunities.The rewards for all this are many. You’ll get to influence, create, and deliver something from start to finish. You will have the power to delight our clients.

Your future at Kyndryl
This role opens the door to many career paths, both vertical and horizontal, and there may be opportunity to travel. It’s a great chance for database administrators or other techs to break into the cloud. It’s also a solid path to become enterprise or chief architect or a distinguished engineer! Whatever you see for yourself, you’ll find the opportunity here.

Who You Are

About the role 

We are hiring a Platform Engineer to help build the internal agent harness: the runtime, orchestration and guardrails that turn foundation models into AI agents doing reliable work at scale. This is harness engineering as a discipline, not a vendor's product, the engineering that wraps a model into governed, useful work. 

You will build and integrate parts of the harness alongside senior platform engineers, with agentic productivity (agents that ship useful work, safely) as the goal. 

What you will do 

• Build and maintain parts of the agent harness: runtime components, tool and MCP integrations, orchestration and guardrail checks. 

• Build golden paths and reusable patterns that help teams ship agents reliably instead of writing one-off scripts. 

• Integrate agents with the systems they act on: CI/CD, infrastructure, cloud services and observability, through APIs and MCP. 

• Implement evaluation and guardrail steps so agent behaviour is tested and governed. 

• Help track adoption and the productivity impact of agentic workflows. 

• Support the teams building and running agents on the harness. 

What success looks like in your first year 

• You ship harness components and golden paths that teams use to run agents in production. 

• Agentic workflows you build run reliably under defined guardrails and evaluation. 

What you will bring 

• 2-4 years in Platform Engineering, DevOps, SRE or backend software engineering. 

• Solid software engineering in Python: production services and automation, not only prompts. 

• Cloud-native foundation: Kubernetes, containers, Infrastructure as Code, one major cloud (AWS, Azure or GCP). 

• Experience integrating systems through APIs, and an interest in agent and MCP integration. 

• An interest in agentic AI and a basic grasp of how LLM agents fail and how engineering makes them reliable. 

• Professional working English and Spanish. 

Nice to have 

• Agent frameworks such as LangGraph, CrewAI, AutoGen etc. and the Model Context Protocol. 

• Production use of AI-assisted development tools (Claude Code, Copilot, Codex). 

• Exposure to LLMOps, agent evaluation or observability for agentic systems. 

• Exposure to regulated environments (finance, insurance, public sector). 

Being You

The “Kyn” in Kyndryl means kinship, which represents the strong bonds we have with each other, our customers and our communities. We focus on ensuring all Kyndryls feel included and we welcome people of all cultures, backgrounds, and experiences. Even if you don’t meet every requirement, we encourage you to apply. We believe in growth, and we’re excited to see what you can bring. At Kyndryl, employee feedback has told us that our number one driver of employee engagement is belonging. That sense of belonging — being a valued, respected, trusted member of the team — is fundamental to our culture and fueling great experiences for our customers. This dedication to welcoming everyone into our company means that Kyndryl gives you the ability to thrive and contribute to our culture of empathy and shared success. That’s The Kyndryl Way.

What You Can Expect

Your career with us isn’t just a job—it’s an adventure with purpose. We offer a dynamic, hybrid-friendly culture that supports your well-being and empowers you to grow. Our Be Well programs are thoughtfully designed to support your financial, mental, physical, and social health—because we know that when you feel your best, you do your best.

From your very first day, you’ll dive into impactful work that powers the systems our customers rely on every day. You won’t just contribute—you’ll make a difference, tackling meaningful projects that sharpen your skills and fuel your growth.

We’re here to champion your journey. With powerful tools to chart your career path, personalized development goals aligned with your ambitions, and continuous feedback to keep you inspired and on track, you’ll have everything you need to thrive and evolve. You’ll develop in-demand skills to grow your career and achieve your ambitions with access to cutting-edge learning opportunities—from certifications with Microsoft, Google, and Amazon to coaching and hands-on experiences. And through it all, you’ll be part of a culture that values empathy, restless learning, and a devotion to shared success.

We want you to thrive here—and we’re committed to helping you do just that. Ready to make an impact? Join us and help shape what’s next.

Get Referred!

If you know someone that works at Kyndryl, when asked ‘How Did You Hear About Us’ during the application process, select ‘Employee Referral’ and enter your contact's Kyndryl email address.