Senior Platform Software Engineer - Core Infrastructure

About the role

Nexthink, a provider of digital employee experience management software, is hiring a Senior Platform Software Engineer for its Core Infrastructure team in Madrid. The team builds and runs the AWS foundation that the rest of engineering depends on, covering networking, clusters and the EKS platform. The role is full-time and permanent.

Key responsibilities

• Design, deploy and run AWS infrastructure end to end, from edge and networking through to the multi-account cell architecture and the EKS platform.
• Balance operational work, automation, requests from other engineering teams and greenfield design.
• Automate infrastructure provisioning, upgrades and consistency using infrastructure-as-code and GitOps.
• Turn product and feature team needs into self-service capabilities.
• Keep the platform reliable, secure and cost-effective: upgrades, autoscaling, observability, security hardening and compliance (FedRAMP, FIPS).
• Share the on-call rotation with the team and help the architecture grow in scale and resilience.

Required profile

• Solid cloud infrastructure background and good software-engineering habits, typically 5+ years as a Platform, DevOps, Software or Site Reliability Engineer.
• Degree in Computer Science, Engineering or a related field, or equivalent experience.
• Strong hands-on AWS across networking, edge and compute (VPC, CloudFront, API Gateway, EKS).
• Comfortable moving between operations, automation, requests and design, and communicating clearly in English.
• Nice to have: FedRAMP or FIPS experience, building internal developer platforms, and cell-based or multi-region architectures at scale.

Required skills

• AWS (VPC, CloudFront, API Gateway, EKS)
• Kubernetes, ideally Amazon EKS
• Infrastructure as code (Terraform or OpenTofu)
• GitOps mindset

What we offer

• Permanent contract, base salary of 65,000 to 80,000 EUR gross per year, OTE of 71,500 to 88,000 EUR including a performance bonus.
• Private health insurance (Sanitas) and daily meal vouchers fully covered.
• Hybrid work model, flexible hours and unlimited vacation plus 3 paid volunteer days.
• Gym subscription allowance, childcare and transport compensation plan, and reimbursement of up to 50% of English and Spanish classes.
• Relocation package for candidates coming from another country.