Sr. Software Development Engineer , Leo Asset Tracker

Role and product

Key responsibilities

• Design, build, and operate Python Lambda API domains and event-driven workers using the established domain layer pattern.
• Own DynamoDB data modeling and OpenSearch indexing, including keys, GSIs, and cursor-paginated queries.
• Extend V3 RBAC and per-program authorization; use centralized permission predicates to protect endpoints.
• Manage IAM roles, policies, Bindle-based access controls, and permission boundaries for least privilege.
• Wire backend changes through TypeScript CDK, including Lambda, IAM, environment variables, API Gateway, and pipeline stages.
• Lead and participate in security reviews across infrastructure and application layers.
• Write unit and integration tests, uphold code quality standards, and participate in code reviews.
• Support deployment stages, monitoring, and on-call operations.
• Collaborate with frontend and infrastructure partners on location tracking, geofencing, and device transfers.

Basic qualifications

• 7+ years of non-internship professional software development experience and 7+ years programming with at least one language.
• 5+ years leading design or architecture of new and existing systems, including design patterns, reliability, and scaling.
• Experience as a mentor, tech lead, or engineering team lead.
• Experience with Python and building and operating production backend services.
• Experience with AWS Lambda, DynamoDB, API Gateway, and IAM.
• Experience designing REST APIs and data models and writing automated tests.
• Experience writing clean, documented, maintainable code and reasoning about security and access control.

Preferred qualifications

• Preferred: 7+ years across the software development lifecycle, including standards, reviews, source control, builds, testing, and operations.
• Preferred: master's degree in computer science or equivalent.
• Preferred: 1+ years of CI/CD experience or AWS Professional-level certification.
• Preferred: aws-lambda-powertools, pydantic, boto3, OpenSearch/Elasticsearch, and NoSQL data modeling.
• Preferred: familiarity with role-based access control and multi-tenant or program-scoped authorization.
• Preferred: Amazon internal build and deployment systems, including Brazil, Apollo, Pipelines, and CRUX.

Compensation

• The posted annual base salary range for Redmond, Washington is $168,100–$227,400 USD.
• The package may include sign-on payments and restricted stock units; final compensation depends on experience, qualifications, and location.

Export control

• Candidates must meet the stated U.S. export-control eligibility criteria: U.S. citizen or national, permanent resident, refugee, or granted asylum.