Staff Software Engineer: Backend & Platform Architect

Obsidian-Security; Philadelphia (Philadelphia County); On-site; USD 223,000 - 239,000; Full time

Benefits offered by this job

Equity and 401k

Healthcare with dental and vision

Flexible PTO

12 weeks parental/family leave

Job summary

Obsidian Security, a leading SaaS security company in Philadelphia, seeks a Senior Staff Software Engineer to own architecture across multiple teams. You will design backend services, data workflows, and integrations, while guiding technical direction and ensuring reliability.

Willingness to mentor engineers and work with product, security researchers, and design teams is essential. You will contribute to scalable, secure systems that help customers understand activity and threats across their

Qualifications

• 8+ years in software engineering with growing scope.
• Proficiency in Python, Go, TypeScript, or SQL.
• Experience designing backend services, APIs, and distributed systems.
• Deep knowledge of relational databases like Postgres.
• Cloud experience on AWS or GCP.
• Familiar with Docker and Kubernetes.
• Experience leading cross-team technical initiatives.
• Strong communication with stakeholders.
• AI tools integration experience is a plus.

Responsibilities

• Own features and system architecture across multiple teams or the broader platform.
• Design and build backend services, APIs, data processing workflows, integrations, and product-facing capabilities.
• Set technical direction and architectural standards that other engineers build against.
• Work with product managers, designers, security researchers, and engineers to turn customer needs into shipped software.
• Improve the performance, reliability, scalability, and observability of existing systems, and identify systemic risks before they become incidents.
• Make practical technical decisions with organization-wide impact and explain tradeoffs clearly to stakeholders.
• Raise engineering standards through code reviews, design discussions, mentoring engineers, and documentation.
• Debug the hardest production issues and drive durable fixes, not short-term patches.
• Use AI-powered tools effectively while maintaining high standards for correctness, security, and maintainability.

Skills

Python

Go

TypeScript

SQL

Backend services

Distributed systems

APIs

AWS

Kubernetes

Docker

Tools

Postgres

Kafka

Grafana

Prometheus

GitLab CI/CD

Job description

Obsidian Security, a leading SaaS security company in Philadelphia, seeks a Senior Staff Software Engineer to own architecture across multiple teams. You will design backend services, data workflows, and integrations, while guiding technical direction and ensuring reliability.

Willingness to mentor engineers and work with product, security researchers, and design teams is essential. You will contribute to scalable, secure systems that help customers understand activity and threats across their