Software Architect

Job Description Introduction: We are seeking a seasoned Backend Architect to join our Digital Signage Cloud team. You will lead the design and evolution of scalable, secure, and cloud-native backend systems that power a global multimedia and device management platform. The ideal candidate brings deep backend expertise, hands-on experience with AWS serverless technologies, and a solid understanding of distributed system design. Experience with IoT platforms and AI integrations is a strong plus. Key Responsibilities: - Architect and evolve backend systems to ensure modularity, scalability, and performance across a multi-tenant SaaS environment. - Design and implement cloud-native serverless architectures using AWS Lambda, API Gateway, DynamoDB, S3, CloudFront, and Cognito. - Define backend standards and drive best practices for API design, authentication, error handling, and observability. - Collaborate with cross-functional teams including frontend engineers, product managers, DevOps, and QA to deliver cohesive solutions. - Implement secure, standards-compliant authentication and authorization using tools like Okta, Cognito, OAuth2, and OIDC. - Guide design decisions for IoT integration, ensuring secure and reliable cloud-device communication (e.g., MQTT, WebSockets). - Lead design and code reviews, mentor engineers, and foster a culture of engineering excellence and continuous improvement. - Explore and incorporate AI/ML capabilities, including LLMs and generative workflows, into backend service architecture. - Maintain focus on performance optimization, cost-efficiency, and operational excellence through metrics and monitoring tools Skill & Experience Requirements: - Bachelor's or Master's degree in Computer Science, Engineering, or related field. - 10+ years of backend development experience with at least 3 years in architectural leadership roles. - Expert-level proficiency in Node.js / TypeScript, including asynchronous programming and modular architecture. - Strong hands-on experience designing and scaling applications using AWS serverless services. - Proven understanding of distributed systems, multi-tenancy, RBAC, and backend security principles. - Exposure to IoT systems and edge/cloud integration patterns is a strong advantage. - Experience with CI/CD, infrastructure as code (CDK/Terraform), Git workflows, and automated testing. - Familiarity with React or modern frontend frameworks . - Knowledge of AI/ML integrations, LLM tooling (Cursor, Windsurf), or generative AI workflows is a bonus. - Excellent communication skills and a proven ability to work across teams and functions. 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. 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.