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Principal Software Engineer

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: Midjourney
Full Time position
Listed on 2026-09-08
Job specializations:
  • Software Development
    Software Engineer, Software Architect, DevOps, C++ Developer
Salary/Wage Range or Industry Benchmark: 180000 - 260000 USD Yearly USD 180000.00 260000.00 YEAR
Job Description & How to Apply Below
  • Act as the technical lead for large parts of the scanner platform: system architecture, codebase structure, and long-term maintainability.
  • Own core runtime foundations: distributed control, state management, fault handling, and reliability.
  • Drive engineering rigor: testability, code quality, review standards, performance regression prevention, and release processes.
  • Build robust observability: logs, metrics, traces, and replayable diagnostics (with privacy constraints).
  • Collaborate with hardware and recon/ML teams to define interfaces, data contracts, timing/synchronization, and failure modes.
  • Lead complex refactors (e.g., message passing / RPC boundaries, modularization, concurrency model) without halting forward progress.
What you'll do
  • Act as the technical lead for large parts of the scanner platform: system architecture, codebase structure, and long-term maintainability.
  • Own core runtime foundations: distributed control, state management, fault handling, and reliability.
  • Drive engineering rigor: testability, code quality, review standards, performance regression prevention, and release processes.
  • Build robust observability: logs, metrics, traces, and replayable diagnostics (with privacy constraints).
  • Collaborate with hardware and recon/ML teams to define interfaces, data contracts, timing/synchronization, and failure modes.
  • Lead complex refactors (e.g., message passing / RPC boundaries, modularization, concurrency model) without halting forward progress.
What we're looking for
  • Deep software architecture experience for real-world systems: robotics, instrumentation, medical devices, or other complex distributed products.
  • Strong Python and concurrency background (asyncio, multiprocessing, profiling, performance engineering).
  • Track record of shipping systems that are observable, debuggable, and resilient.
  • Strong technical leadership: clarity, pragmatic trade-offs, and mentoring.
Useful experience
  • Building but rock-solid systems: clear interfaces (gRPC/protobuf or equivalent), strong state modeling, and failure handling.
  • High-leverage engineering habits on a lean team: good tests, CI, reproducible dev environments, and fast code review.
  • Practical performance + concurrency work in Python (asyncio, profiling, multiprocessing) and comfort debugging distributed behavior.
  • Security-minded device software: safe defaults, encrypted data paths, and disciplined handling of PII/PHI.
  • Operational thinking: remote updates/management, excellent logging, and diagnostics that make real hardware debuggable.
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