Senior Staff Engineer – C# / .NET

Fully Remote (Ireland)

We’re partnering exclusively with a global cybersecurity SaaS leader delivering enterprise-grade Identity & Access Management (IAM) solutions trusted by large-scale organisations worldwide.

This is a fully remote role within Ireland.

This isn’t a routine development role. It’s for a senior engineer who thrives in complexity, enjoys untangling hard problems, and takes true ownership of systems from code to production.

The Opportunity

This role is approximately 90% hands-on engineering and 10% DevOps collaboration.

You will:

Lead deep technical investigations across large-scale C# / .NET systems
Troubleshoot complex production issues across APIs, databases, infrastructure and CI/CD pipelines
Refactor and modernise legacy components to improve scalability, resilience and maintainability
Act as a senior technical authority within the team
Partner closely with DevOps on deployment strategy, observability and runtime optimisation
Contribute to architectural decisions and platform evolution

If you believe “you build it, you own it” — this role is built for you.

Technical Environment

C# / .NET Framework 4.8 & Modern .NET
SQL Server & MySQL
ElasticSearch & Redis
Docker & Kubernetes
AWS (EKS, EC2, RDS, S3)
GitHub Actions, TeamCity, Terraform
Prometheus, Grafana & cloud-native monitoring

What We’re Looking For

8+ years of commercial software engineering experience
Deep debugging expertise across distributed and monolithic systems
Strong database optimisation and performance tuning skills
Confidence reading and understanding unfamiliar, large codebases
A natural problem solver who enjoys untangling complex technical challenges
Strong production mindset — understanding how software behaves in the real world

Why Join?

Fully remote role within Ireland
Work on a high-scale, mission-critical identity platform
Strong technical ownership and autonomy
Influence architectural direction and modernisation initiatives
Flexible, engineering-first culture

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