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Foresite Labs

engineering opportunity

Senior Staff Machine Learning Software Engineer

You will own the transition of research prototypes into production-ready inference components by optimizing performance, latency, and memory usage. This involves collaborating with research teams to implement efficient code in Rust, C++, and CUDA while maintaining strict deployment and reliability standards.

San Diego, California, United StateshybridFULL_TIME

Posted

About the role

What will you do at Foresite Labs?

Senior Staff Machine Learning Software Engineer Location: San Diego, CA Job Type: Full-Time Salary Range: $202K – 215K Sr. Staff ML/Software Engineer We are building a product where learned models and compute-heavy inference components have to run inside a tight local runtime budget. Research code is only the starting point.

This role owns the path from a working prototype to production inference that is measured, packaged, tested, and ready for repeated use in the field. You will work closely with the people developing the underlying algorithms, but your ownership is different: production readiness, performance, reliability, and the engineering boundary between exploratory model work and shipped execution.

The strongest fit is someone who can explain the bottleneck they found, the number they moved, the tradeoff they accepted, and the test that kept the fix from regressing. If your best work is making inference faster, smaller, more predictable, and easier to ship, this role is likely a good match.

What You'll Own Turning research prototypes into production inference components with explicit latency, throughput, memory, and accuracy budgets Optimizing the execution path: tensor layout, host/device transfers, batching strategy, kernel launch overhead, mixed precision, quantization, and memory reuse Writing or tuning Rust, C++, and CUDA where framework-level optimization is not enough, then validating the improvement with profiler output and release-facing tests Building inference-adjacent evaluation machinery: calibration checks, confidence behavior, regression detection, dataset slices, and failure-mode reporting tied to product metrics Maintaining the deployment contract: model artifacts, runtime integration, versioning, reproducibility, and performance gates that block unsafe changes · Algorithm research and novel model design live on a separate track.

You will collaborate with that team, translate prototypes into production constraints, and surface shipping risks early when a design needs to change. Education and Experience A PhD (6+ years), MS (10+ years) or BS/BA (12+ years) of experience in life sciences or technology. Must have demonstrated leadership or ownership with 2 of the 5 areas referenced below successfully: Shipped constrained inference.

You have personally moved a model or learned component from prototype to deployed runtime with a real latency, throughput, memory, or power budget. You can name the target, the bottleneck, and the change that closed the gap. Rust/C++ at shipping depth.

You have written production code in Rust or modern C++ where correctness, latency, memory layout, and ownership boundaries mattered. You can reason about the runtime behavior of the code you ship, not just its API surface. CUDA and accelerator-aware execution.

You are comfortable below Python: custom CUDA extensions or kernels, host/device memory movement, launch overhead, profiler traces, and the practical tradeoffs between framework convenience and a purpose-built implementation. Performance-native judgment. You reason in wall-clock time, memory movement, launch overhead, bandwidth, numerical precision, and error budgets without needing those constraints added late in review.

Production engineering discipline. You define typed interfaces, deterministic behavior, reproducible artifacts, meaningful tests, and clean handoffs with upstream research code.

Strongly Preferred Rust at shipping depth, especially FFI boundaries, pyo3 / maturin, async runtimes, or performance-sensitive service code Inference on constrained local hardware, embedded systems, edge devices, or budget-bound accelerator deployments Quantization, mixed precision, model compression, or kernel fusion that shipped beyond a benchmark notebook Calibration or confidence estimation used on production outputs, with monitoring or regression checks attached Public or shareable evidence of engineering quality: code, technical writing, postmortems, talks, or a concrete shipped system you can discuss Comfort using AI-assisted development tools while still owning correctness, tests, and review quality Nice to Have Real-time or near-real-time signal-processing systems Products that combine learned models with deterministic numerical code Rust- or C++-based inference or numerical pipelines, including custom FFI to CUDA, cuDNN, TensorRT, or similar accelerator libraries We are an equal opportunity employer.

We thrive on diversity and collaboration.

Which skills does this role require?

Machine LearningC++Inference OptimizationPerformance ProfilingSoftware EngineeringNumerical ComputingSignal ProcessingSystem ArchitecturePythonPerformance EngineeringLatency OptimizationMemory ManagementProduction ReadinessRegression TestingModel ArtifactsReproducibilityR&DPrototyping

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