Senior Platform Engineer (AWS)

Square One Resources is hiring for a senior platform engineer role focused on building and operating critical payment, subscription, and entitlement platforms at scale. The team collaborates closely with engineering, product, finance, and operations to deliver reliable systems and scalable data platforms supporting mobile ecosystems.

• 6+ years of professional software engineering experience with ownership of production systems.
• Strong experience designing, building, and operating backend services in production environments.
• Deep hands-on expertise with AWS services and cloud-native architectures.
• Proven experience building and managing data pipelines using Apache Airflow.
• Solid knowledge of Snowflake, including data modeling, performance optimization, security, and cost management.
• Ability to work across the full stack, delivering both backend services and frontend applications when required.
• Strong understanding of SQL, distributed systems, testing and quality assurance practices, CI/CD pipelines, and monitoring and observability.

• Design, build, and operate backend services supporting payments, subscriptions, and entitlement management across iOS and Android platforms.
• Own and maintain Airflow-based data pipelines that move data from operational systems into Snowflake.
• Design and optimize data models in Snowflake to support finance reconciliation, product analytics, and machine learning initiatives.
• Collaborate with analytics engineers on data transformation layers using dbt or similar technologies.
• Develop internal tools and applications using React and TypeScript to enable self-service workflows for Finance, Operations, and Customer Support teams.
• Architect, implement, and maintain AWS infrastructure using Infrastructure as Code with Terraform.
• Drive observability, reliability, security, and operational excellence across platform services.
• Participate in on-call rotations supporting critical payment and subscription systems.
• Lead technical discussions, conduct design reviews, and mentor other engineers.
• Work directly with business stakeholders to translate complex requirements into scalable technical solutions.