Senior IoT Backend Engineer (Python/AWS)

Senior IoT Backend Engineer (Python/AWS) Location: San Bruno, CA (Hybrid — 2 days/week in office) Employment Type: Contract-to-Hire Level: Senior The Role We’re looking for a hands-on Senior IoT Backend Engineer (Python/AWS) to lead cloud work across our AWS infrastructure for our client in the environmental sustainability space. This role is responsible for designing, building, and maintaining our end-to-end systems across web, mobile, cloud services, and data platforms that support critical customer experiences. In this role, you'll work with a cross-functional group of engineers, guide architectural decisions, and help scale products that are essential to long-term growth and success. This is not a data engineering / Hadoop role. This position is focused on connected device systems and IoT cloud services. Note: No C2C or C2H arrangements will be considered. This is a direct contract engagement only. No agencies—unsolicited outreach will be reported as spam. What You’ll Do • Collaborate with a cross-functional team of engineers building web and mobile applications, cloud backends, and data pipelines • Lead end-to-end technical delivery—from architecture and design to implementation, testing, deployment, and operations • Collaborate with product and design teams to deliver intuitive and performant user experiences • Champion modern software development practices, including CI/CD, IaC, observability, and test automation • Ensure the reliability, scalability, and maintainability of our systems • Promote a culture of ownership, learning, and continuous improvement Required Qualifications • 6+ years as a cloud (services) engineer / backend engineer • Strong API design experience, and an understanding of building asynchronous systems and error handling • Strong background in Python development • TypeScript and modern JavaScript development • Hands-on experience with AWS • Hands-on experience with IoT (AWS IoT is a plus) • Familiarity with data pipelines and cloud-native data streaming and processing tools, such as Kinesis • Data streaming and warehousing technologies like Kafka and Snowflake • Solid understanding of cloud infrastructure, preferably with serverless architectures and Infrastructure as Code (IaC) tools (e.g. API Gateway, Lambdas, RDS, DynamoDB, IAM, and CDK) • Passion for building reliable systems with deep knowledge of observability, tracing, and system performance • Excellent communication skills • Passion for environmental sustainability. Preferred Skills • Mobile application development, including React Native, native modules, Bluetooth Low Energy (BLE), deep linking, and websockets • Access control systems, such as designing Role-Based Access Control (RBAC) for internal and external applications • Experience with version control, CI/CD, and build systems (e.g., GitHub Actions) • Familiarity with compliance and security standards like ISO 27001, SOC 2, GDPR, and CPRA Benefits • Medical, dental, and vision coverage • 401(k) plan