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.