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Obsidian Security | REMOTE (US-Eastern hours ideal) or ONSITE (Palo Alto / Newport Beach) | Full-Time | VISA OK | Salary $149k–$208k + equity We secure the SaaS apps—Microsoft 365, Salesforce, and hundreds more—where modern business happens, blocking breaches *in real time*. Why Obsidian? - Founded 2017; backed by Greylock, Norwest, IVP, and others, now scaling toward IPO. - Trusted by Snowflake, T-Mobile, Pure Storage & 200+ enterprises on five continents. - Momentum: $90 M Series C, new AI-driven defenses, expanding partner ecosystem. Senior Threat Backend Engineer Own the APIs, event pipelines, and extension logic that power our browser-native security product. Ship to prod the day you merge. You will: - Build & refine threat detections with our security research team. - Stream and enrich event data through Kafka → Postgres/Elasticsearch. - Extend our Chromium-based browser extension (WXT). - Add new SaaS services to the platform; optimize data stores for scale. Stack highlights: - Python + FastAPI / asyncio - TypeScript + WXT - Rust micro-services - Kafka - Docker/K8s - Postgres & Elasticsearch You bring: - 4–6 yrs software engineering (cyber-security a plus). - Deep Python async skills; Kafka & K8s in production. - DB mastery (Postgres + Elastic). - Clear communication & bias toward ownership. Apply here: https://grnh.se/a646066d8us