Senior Software Engineer — Scalable SaaS on AWS

Poppulo; Cork; Hybrid; EUR 61,000 - 75,000; Full time

Benefits offered by this job

Company performance-related bonus

Medical insurance

Educational assistance

In-house soft skills training

Job summary

Poppulo in Cork, Ireland, is hiring a Senior Software Engineer to reinforce the scale and reliability of our SaaS Employee Experience platform. You will design and implement complex features, drive performance, and mentor peers in a hands-on, collaborative team.

The role emphasizes modern cloud architectures, security, observability, and shipping high-quality software in a distributed system. We offer a hybrid working model with office in Cork and flexible arrangements; preference for candidates

Qualifications

• 5–8 years of software development experience delivering production-grade applications in distributed or SaaS environments.
• Strong experience in either Node.js/TypeScript (including asynchronous programming and modular architecture) or Java (Spring Boot, concurrency, RESTful services), and familiarity with React (or similar modern front-end frameworks).
• Solid understanding of distributed systems, multi-tenancy concepts, RBAC, and SaaS security principles.
• Hands‑on experience with Microservices Architecture, Docker, Kubernetes, and AWS cloud services a plus.
• Experience implementing observability best practices (metrics, logging, tracing, alerting).
• Working knowledge of event-driven systems (Kafka, SNS/SQS, Event-Bridge, Kinesis).
• Experience contributing to CI/CD pipelines, Git workflows, and automated testing (JUnit, Jest, Playwright, etc.).
• Demonstrated ability to design for scalability, performance, and fault tolerance within a defined product domain.
• Familiarity with infrastructure as code (Terraform, CDK) is desirable.
• Strong problem‑solving skills and the ability to troubleshoot complex production issues.
• Effective communication skills with technical and cross‑functional stakeholders.
• Commitment to continuous learning and improving engineering practices.

Responsibilities

• Design and develop high-quality, scalable systems and services aligned with architectural standards and product requirements.
• Implement microservices and APIs with strong emphasis on maintainability, performance, observability, and reliability.
• Own complex features or components from design through deployment, including testing, monitoring, and operational support.
• Collaborate closely with Principal Engineers, Architects, Product Managers, and DevOps to ensure high-quality and consistent delivery.
• Build and enhance services leveraging AWS serverless, event-driven, and container-based technologies (Lambda, ECS, SNS, SQS, DynamoDB, Event-Bridge, RDS, etc.).
• Ensure solutions adhere to authentication, authorization, and security best practices (OAuth2, OIDC, RBAC, etc.).
• Participate in code reviews and uphold best practices in coding, design, testing, and CI/CD pipelines.
• Support observability initiatives by contributing to metrics, logging, tracing, and alerting improvements.
• Proactively identify and address technical debt, reliability risks, and areas for continuous improvement.
• Contribute to compliance and data protection requirements including GDPR and PII handling best practices.
• Participate actively in agile ceremonies and contribute to continuous improvement of engineering processes.
• Demonstrate alignment with company values and promote an inclusive, collaborative engineering culture.

Skills

Node.js/TypeScript

Java/Spring Boot

React

Distributed systems

CI/CD pipelines

AWS cloud

Docker

Kubernetes

Observability

Security best practices

Tools

Kafka

SNS/SQS

Event-Bridge

Kinesis

Terraform

CDK

Git

JUnit

Jest

Playwright

Job description

Poppulo in Cork, Ireland, is hiring a Senior Software Engineer to reinforce the scale and reliability of our SaaS Employee Experience platform. You will design and implement complex features, drive performance, and mentor peers in a hands-on, collaborative team.

The role emphasizes modern cloud architectures, security, observability, and shipping high-quality software in a distributed system. We offer a hybrid working model with office in Cork and flexible arrangements; preference for candidates