Platform Engineering Lead: AWS & CI/CD Mastery

MCS Group; Dublin; On-site; EUR 85,000 - 90,000; Full time

Job summary

MCS Group is seeking a Platform Engineer Lead in Dublin 2 to own and evolve the company's AWS platform. This role is hands-on with leadership responsibilities, reporting into the engineering function and collaborating with product teams to strengthen platform foundations.

You will design reusable platform capabilities, improve developer experience, mentor a DevOps engineer and help recruit and scale the platform team as the company grows. Four days on-site.

Qualifications

• Strong hands-on AWS in production environments.
• Experience with Terraform and Infrastructure as Code.
• Experience designing cloud networking, security and deployment environments.
• A strong understanding of software engineering as well as infrastructure.
• The ability to write code and work alongside application engineering teams.
• Experience with C# and .NET environments, or a clear track record of learning new languages and technologies quickly.
• Experience improving CI/CD, observability, developer tooling or internal platforms.
• A practical understanding of system design, scalability and reliability.
• Experience mentoring engineers or leading technical projects.
• Strong communication and the ability to work across engineering teams.

Responsibilities

• Design and evolve the company's AWS platform.
• Own areas including ECS, VPC networking, IAM, subnets, cloud security and reliability.
• Build and improve infrastructure using Terraform and Infrastructure as Code.
• Standardise environments, deployment processes and shared platform capabilities.
• Improve CI/CD using Azure DevOps and ArgoCD.
• Develop internal tools, platform APIs, reusable libraries and engineering frameworks.
• Improve developer experience across the wider engineering team.
• Strengthen observability using Grafana and Prometheus.
• Support incident response and improve long-term platform resilience.
• Collaborate with .NET engineering teams on shared technical challenges.
• Help the business make pragmatic decisions around architecture and future platform decomposition.
• Mentor and manage the existing DevOps Engineer.
• Help recruit and develop the platform team as the company grows.
• Establish shared engineering standards across infrastructure and application development.

Skills

AWS in production

Terraform

Cloud networking

Security design

CI/CD tooling

Observability

Developer tooling

C#/.NET

System design

Mentoring/leadership

Cross-team communication

Hands-on

Tools

Azure DevOps

ArgoCD

Grafana

Prometheus

Job description

MCS Group is seeking a Platform Engineer Lead in Dublin 2 to own and evolve the company's AWS platform. This role is hands-on with leadership responsibilities, reporting into the engineering function and collaborating with product teams to strengthen platform foundations.

You will design reusable platform capabilities, improve developer experience, mentor a DevOps engineer and help recruit and scale the platform team as the company grows. Four days on-site.