Introduction Are you searching for an opportunity to play a key role in driving the dramatic growth of a highly successful software company At Poppulo we re working on what s next in communications and workplace technology As a pioneer in this industry we understand that meaningfully reaching every employee is hard And so is managing office space in a hybrid world And so is improving the customer and guest experience We exist to make each of these things easier We exist to bring harmony to our customers And we do that at enterprise scale Our omnichannel employee communications customer communications and workplace experience platform is trusted by over 6 000 organizations today reaching more than 35M employees and delivering content to 500 000 digital signs We know there s no such thing as a perfect candidate - we re all a work in progress and are growing new skills and capabilities all the time We encourage you to apply for a position with Poppulo even if you don t meet 100 of the requirements We believe in fostering an environment where there is a diversity of perspectives in hopes that we can all thrive Job Summary We are looking for a Principal Software Engineer to drive the technical excellence and scalability of our SaaS Employee Communications platform You will serve as a technical leader and hands-on contributor in your team - designing and implementing complex features improving system performance and reliability and mentoring other engineers This role bridges the gap between Senior Engineers and Software Architects You will translate architectural vision into robust maintainable implementations and influence architectural evolution through deep technical insight and delivery excellence The ideal candidate brings deep SaaS expertise hands-on experience with AWS managed serverless technologies and a solid understanding of distributed system design Key Responsibilities Lead the design and development of complex high-impact systems and services Translate architectural blueprints into scalable production-grade solutions Design and implement microservices and APIs with strong emphasis on scalability observability and reliability Own major features or components from design through deployment including performance optimization resilience and cost efficiency Mentor senior and mid-level engineers conduct code reviews and uphold best practices in coding design testing and CI CD pipelines Work closely with Architects Product Managers and DevOps to ensure architectural alignment consistent design patterns and high-quality delivery Build and optimize services leveraging AWS serverless Event Driven and container-based technologies Lambda ECS SNS SQS DynamoDB Event-Bridge RDS etc Ensure systems adhere to authentication authorization and compliance standards OAuth2 OIDC RBAC etc Identify areas for system and process improvements including performance scalability and developer productivity Advocate for self-learning research and innovation Accountable for coding standards processes and software engineering skills Use metrics and analytics to anticipate future engineering needs Ensure systems compliant to data protection and privacy requirements including GDPR HIPAA and PII data handling best practices Proactively identify solutions improvements and tech-debt Education Experience 8 years of software development experience with a track record of technical leadership in complex distributed systems Solid experience in either Node js TypeScript including asynchronous programming and modular architecture or Java Spring Boot Concurrency Multi-threading RESTful services and React or similar modern front-end frameworks Proven understanding of distributed systems multi-tenancy RBAC and SaaS security principles Hands-on experience with Microservices Architecture Docker Kubernetes and AWS Experience with Observability best practices metrics logging tracing and alerting Strong understanding of event-driven systems Kafka SNS SQS Event-Bridge Kinesis Experience with GraphQL Federation and implementation Experience with CI CD pipelines Git workflows and automated testing JUnit Jest Playwright etc Proven ability to design for scalability performance and fault tolerance in multi-tenant SaaS environments Knowledge of GDPR a plus Familiarity with infrastructure as code Terraform CDK and observability stacks Excellent communication skills with both technical and business stakeholders and a proven ability to influence across teams and functions Passion for continuous learning and technical excellence Comfortable leading by example and driving engineering best practices Who We Are We are a values-driven organization that encourages our employees to bring their authentic selves to work every day and empowers everyone to make a tangible impact on our products clients and culture We offer a dynamic environment with driven fun and flexible individuals who thrive on challenge and responsibility This is an opportunity to contribute to our culture and join a company that s on the move We live the Poppulo values each day as they are key to everything we do Bring Your Best Self We show up authentically are self-aware and always strive to be better See it Own it Solve it We proactively innovate and solve for our customers and each other We set an example with high standards for our work We foster a culture of learning acknowledging our successes and our failures Together We re Better We value and celebrate our diversity We learn from others respecting their expertise and focus on building trust That s what makes us a team Named a Great Place to Work in 2015 2016 2017 2018 2019 2020 and 2021 we are a fast-growing global technology company with offices in Ireland the US and the UK Poppulo is an equal opportunity employer Named a Great Place to Work in 2015 2016 2017 2018 2019 2020 and 2021 we are a fast-growing global technology company with offices in Ireland the US and the UK Poppulo is an equal opportunity employer We are committed to protecting your privacy For details on how we collect use and protect your personal information please refer to our Job Applicant Privacy Policy