We secure the SaaS apps companies actually run on: M365, Salesforce, and hundreds more. You’d be on the Threat product team working full-stack. That means browser extension code (content/background scripts, manifest v3, message passing), backend services chewing through millions of events, and the data pipelines feeding our detection engine. One day you’re in TypeScript debugging why a content script won’t capture form submissions on some vendor’s weird SPA. The next you’re in Python fixing a Kafka consumer that’s falling behind. Sometimes you’re in Rust optimizing a hot path in the telemetry collector.

Big current focus is shadow AI, i.e. catching when employees paste sensitive data into ChatGPT, Claude, or whatever LLM showed up this week. You’d build the systems that detect it.

Looking for ~8+ yrs experience, real browser knowledge (DOM, event loop, SPA routing, CORS, not just “I used React”), prior browser extension work, strong TypeScript, comfortable in Python, willing to write Rust, plus data-at-scale chops (event streaming, Postgres, Elasticsearch, Kafka). Bonus: AI security (prompt injection, exfiltration), detection engineering/SIEM, or security tooling.

Apply via the link above, or see all our open roles at https://www.obsidiansecurity.com/careers

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.

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.

  - Python + FastAPI / asyncio  
  - TypeScript + WXT 
  - Rust micro-services
  - Kafka
  - Docker/K8s
  - Postgres & Elasticsearch

  - 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.

Obsidian Security is at the forefront of SaaS security, dedicated to detecting and mitigating threats effectively. We are hiring for multiple roles. With our advanced threat detection solution, we visualize user activity, identify employee compromise, and mitigate insider threats, ensuring data security before a material breach occurs.

Skills:

  - Python (specifically experience with asyncio)
  - Rust a plus
  - SqlAlchemy
  - Fastapi
  - Scylla DB a plus
  - Go

  you can't use latest:20 in a .tool-versions file or many other places

Obsidian Security is at the forefront of SaaS security, dedicated to detecting and mitigating threats effectively.

With our advanced threat detection solution, we visualize user activity, identify employee compromise, and mitigate insider threats, ensuring data security before a material breach occurs.

Skills:

  - Python (specifically experience with asyncio)
  - SQL
  - Rust a plus 
  - SQLAlchemy 
  - Fastapi 
  - Scylla DB a plus 
  - Go

Obsidian Security is at the forefront of SaaS security, dedicated to detecting and mitigating threats effectively.

We are hiring for multiple roles.

Threat Detection Team:

With our advanced threat detection solution, we visualize user activity, identify employee compromise, and mitigate insider threats, ensuring data security before a material breach occurs.

Skills: - Python (specifically experience with asyncio) - Rust a plus - SqlAlchemy - Fastapi - Scylla DB a plus - Go

Threat Backend Engineer: https://obsidiansecurity.applytojob.com/apply/wK0pJCTaKO/Thr...

See all our open positions here https://www.obsidiansecurity.com/careers/

Obsidian Security is at the forefront of SaaS security, dedicated to detecting and mitigating threats effectively.

We are hiring for multiple roles.

Threat Detection Team:

With our advanced threat detection solution, we visualize user activity, identify employee compromise, and mitigate insider threats, ensuring data security before a material breach occurs.

Threat Backend Engineer: https://obsidiansecurity.applytojob.com/apply/wK0pJCTaKO/Thr...

SaaS Posture Security & Compliance Team:

Ensuring SaaS applications are robust and compliant with industry standards. You'll focus on real-time monitoring, proactive vulnerability mitigation, and managing sensitive data access for optimal security and continuous compliance.

Skills:

  - Python (specifically experience with asyncio)
  - SqlAlchemy
  - Fastapi
  - Dagster
  - Duckdb / Postgres

See all our open positions here https://www.obsidiansecurity.com/careers/

Obsidian Security is at the forefront of SaaS security, dedicated to detecting and mitigating threats effectively.

We are hiring for multiple roles.

Threat Detection Team:

With our advanced threat detection solution, we visualize user activity, identify employee compromise, and mitigate insider threats, ensuring data security before a material breach occurs.

Threat Backend Engineer: https://obsidiansecurity.applytojob.com/apply/wK0pJCTaKO/Thr...

SaaS Posture Security & Compliance Team:

Ensuring SaaS applications are robust and compliant with industry standards. You'll focus on real-time monitoring, proactive vulnerability mitigation, and managing sensitive data access for optimal security and continuous compliance.

Skills:

  - Python (specifically experience with asyncio)
  - SqlAlchemy
  - Fastapi
  - Dagster
  - Duckdb / Postgres

See all our open positions here https://www.obsidiansecurity.com/careers/

Obsidian Security is at the forefront of SaaS security, dedicated to detecting and mitigating threats effectively.

We are hiring for multiple roles.

Threat Detection Team:

With our advanced threat detection solution, we visualize user activity, identify employee compromise, and mitigate insider threats, ensuring data security before a material breach occurs.

Threat Backend Engineer: https://obsidiansecurity.applytojob.com/apply/wK0pJCTaKO/Thr...

SaaS Posture Security & Compliance Team:

Ensuring SaaS applications are robust and compliant with industry standards. You'll focus on real-time monitoring, proactive vulnerability mitigation, and managing sensitive data access for optimal security and continuous compliance.

Skills:

  - Python (specifically experience with asyncio)
  - SqlAlchemy
  - Fastapi
  - Dagster
  - Duckdb / Postgres

See all our open positions here https://www.obsidiansecurity.com/careers/

  Strict limits will be placed on the number of people who can meet - a maximum of two guests aged 13 and over will be allowed in people's homes, and four on 24-26 December and on New Year's Eve and New Year's Day.

https://www.cdc.gov/vaccines/schedules/hcp/imz/child-adolesc...