Senior Software Engineer - Backend Python Developer

**Black Lantern Security is a Services Oriented Company** --------------------------------------------------------- * Black Lantern Security is built around the ingenuity, passion, and determination of our Operators and Analysts * No one "mastermind" * No "cult of personality" * Competitive compensation and benefits * Healthy work\-life balance * Project\-based engagements that play to the team's strengths Senior Software Engineer \- Backend Python Developer ### **Location: Remote** ##### **Required:** * 7\+ years professional Python with real, substantive experience in both of the following (not just one): + Django \- ORM, migrations, Admin, app structure. + FastAPI / Starlette \- async routing, Pydantic, dependency injection. * 3\+ years of RUST development experience in a production environment. * ASGI fluency \- Understand the difference between ASGI and WSGI, have worked with async\_to\_sync / sync\_to\_async in anger, and have opinions about where the sync / async boundary should live in a hybrid application. * PostgreSQL and MongoDB\- schema design, indexing, migrations at scale, query optimization. * Multi\-database architecture experience \- comfort operating with more than one data store concurrently. * OpenAPI schema design \- can read and reason about the generated spec; understand why schema churn breaks auto\-generated clients. * Django migrations coordinated across multiple environments \- no data loss, careful about backward compatibility. * Linux, Docker, Docker Compose, health checks. * Security\-aware development \- secrets at rest, OAuth callback URL hygiene, CORS and CSRF in an ASGI context. * Excellent written communication \- enterprise customers need clear incident write\-ups and release notes. ##### **Perferred background:** * Prior experience with a FastAPI \+ Django hybrid codebase. * MongoDB (pymongo, aggregation pipelines). * Redis patterns \- distributed locking, pub/sub, caching strategies. * OAuth provider integration. * At\-rest encryption patterns \- django\-encrypted\-model\-fields or equivalent. * Kubernetes / Helm. * SOC 2 Type II engineering experience. * Pydantic v2 \- performance characteristics, migration patterns. * Prior B2B SaaS experience.