Senior Software Engineer

Semperis; Ireland; On-site; EUR 60,000 - 90,000; Full time

Job summary

Semperis is seeking a Senior Backend Engineer in Ireland to design and develop crucial infrastructure components for their security and identity products. The role involves optimizing backend services, collaborating with various teams, and mentoring junior engineers.

Applicants should have over 7 years of experience in backend development, strong knowledge of C# and .NET Core, as well as familiarity with cloud environments like Azure, AWS, or GCP.

Qualifications

• 7+ years of professional software engineering experience with strong backend expertise.
• Demonstrated ability in building enterprise SaaS applications.
• Experience in the Enterprise Identity and Access Management (IAM) domain.

Responsibilities

• Design and build shared platform components ensuring scalability and reliability.
• Own critical backend services through the entire deployment process.
• Mentor junior engineers with technical guidance and code reviews.

Skills

C# and .NET Core

Kubernetes and container orchestration

Microservices architecture

Kafka or RabbitMQ

Observability tools (Prometheus, Grafana)

Education

Bachelor’s degree in Computer Science or equivalent

Job description

Responsibilities

• We are seeking an exceptional Senior Backend Engineer to join our Platform Group, where you will architect and develop shared infrastructure components that power Semperis’s enterprise security and identity products
• This is a highly collaborative role requiring both technical excellence and strong cross‑functional partnership skills
• Design and build shared platform components used across multiple product teams, ensuring scalability, reliability, and maintainability
• Architect distributed systems using microservices and event‑driven patterns that support enterprise‑scale workloads
• Own critical backend services from conception through deployment, including code quality, performance optimization, and operational excellence
• Collaborate extensively with product engineers, DevOps, and architects to define platform capabilities and technical standards
• Mentor junior engineers through code reviews, pair programming, and technical guidance
• Drive technical initiatives that improve developer productivity, system observability, and platform resilience
• Contribute to architectural decisions and establish best practices for backend development across the organization
• Analyze system performance and data patterns to identify optimization opportunities and inform future platform investments

Qualifications

• Demonstrated ability building enterprise SaaS applications serving high‑volume, multi‑tenant environments
• Production experience with Kubernetes and container orchestration in cloud environments (Azure/AWS/GCP preferred)
• Deep proficiency in C# and .NET Core, including modern framework features and performance optimization
• Bachelor’s degree in Computer Science or equivalent practical experience
• Technical leadership experience, including mentoring engineers and leading technical initiatives
• Fluency in English (written and verbal)
• 7+ years of professional software engineering experience, with strong expertise in backend development
• Experience developing shared libraries, frameworks, or platform components consumed by multiple teams
• Proven track record designing and implementing microservices architectures and event‑driven systems at scale
• Strong collaborative mindset with excellent communication skills and experience working across teams to drive consensus
• Hands‑on expertise with Kafka, RabbitMQ, or similar message brokers
• Experience in the Enterprise Identity and Access Management (IAM) domain
• Knowledge of ElasticSearch or other distributed search/analytics platforms
• Background in API design and governance for platform services
• Open‑source contributions or experience maintaining shared component libraries
• Experience with observability tools (Prometheus, Grafana, distributed tracing)
• Familiarity with CI/CD pipelines and infrastructure‑as‑code practices