Software Architect - Backend

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.

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