Member of Technical Staff — Inference Infrastructure Causal LabsMember of Technical Staff — Inference InfrastructureSan Francisco, CaliforniaOur founding team has built and deployed AI against the physical world in robotics, drug discovery, and particle physics at institutions like DeepMind, Waymo, Cruise, Insitro, Nabla Bio, and CERN. Progress on an LPM is gated by how fast we can evaluate it: large-scale backtesting against decades of physical observations, ensemble generation, and rollout evaluation across model scales.
Member of Technical Staff - Infrastructure Asari AIMember of Technical Staff - InfrastructureSan Francisco, CaliforniaOur agents tackle long-horizon, high-performance workloads, and you'll design the cloud compute, distributed systems, and sandboxed tooling that keeps them reliable, efficient, and ready to scale. For example, our agents can efficiently reason about and verify mission-critical code, including migrating space-grade software from C to Safe Rust .
Member of Technical Staff — Training Infrastructure Causal LabsMember of Technical Staff — Training InfrastructureSan Francisco, CaliforniaOur founding team has built and deployed AI against the physical world in robotics, drug discovery, and particle physics at institutions like DeepMind, Waymo, Cruise, Insitro, Nabla Bio, and CERN. Research and test parallelization strategies and numerical precision trade-offs across model scales, including for architectures that don't map cleanly onto existing LLM training stacks.
Software Engineer, Data Infrastructure & Acquisition - Oakland, CA, USA SpeechifySoftware Engineer, Data Infrastructure & Acquisition - Oakland, CA, USAOakland, CAOver 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.
Software Engineer, Data Infrastructure & Acquisition - San Mateo, CA, USA SpeechifySoftware Engineer, Data Infrastructure & Acquisition - San Mateo, CA, USASan Mateo, CAOver 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.
Member of Technical Staff — Data Infrastructure Causal LabsMember of Technical Staff — Data InfrastructureSan Francisco, CaliforniaOur founding team has built and deployed AI against the physical world in robotics, drug discovery, and particle physics at institutions like DeepMind, Waymo, Cruise, Insitro, Nabla Bio, and CERN. Your mission is to build the data platform underneath it all — the storage, compute, and loading systems that make every dataset cheap to ingest, fast to query, and immediately available to training.
NewSenior Software Engineer, Robot Data Infrastructure GRAMSenior Software Engineer, Robot Data InfrastructureSan Francisco, CA$190,000–$240,000 / yearDemonstrated ownership of a production pipeline incident that caused silent data loss, corrupt data, or an unavailable downstream dataset, including detection, root cause, recovery or backfill, and a test or monitor that prevented recurrence. Success means a model behavior can be traced through its dataset, run, software, calibration, commands, interventions, outcomes, and hardware state—and that dataset revisions remain reproducible rather than becoming ungoverned data volume.
NewResearch Scientist / Engineer - Reinforcement Learning Infrastructure Luma AI, Inc.Research Scientist / Engineer - Reinforcement Learning InfrastructureRedwood City, CAYou'll build the systems that make reinforcement learning work at frontier scale - coupling policy optimization with large fleets of inference workers, agentic environments, and the reward and verification systems that turn model behavior into learning signal. RL at scale is a full-loop systems problem: training, rollout generation, environment execution, and reward computation running concurrently across thousands of GPUs, all needing to stay fast, stable, and correct together.
Software Engineer, Data Infrastructure & Acquisition - San Francisco, CA, USA SpeechifySoftware Engineer, Data Infrastructure & Acquisition - San Francisco, CA, USASan Francisco, CAOver 50 million people use Speechify's text-to-speech products to turn whatever they're reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.
Member of Technical Staff, Infrastructure MirendilMember of Technical Staff, InfrastructureSan Francisco, CaliforniaTraining and inference infrastructure - understand the resource and scheduling demands of research, training, and inference workloads and build the platform capabilities those workloads need. Networking - build the networking layer across clouds, clusters, and hosts: routing, peering, load balancing, and network isolation.
Software Engineer (Core Infrastructure) BrowserbaseSoftware Engineer (Core Infrastructure)San Francisco, CaliforniaBacked by Kleiner Perkins, CRV, and Notable Capital, our team is building on our CEO's founding vision to power the world's best AI tools and help everyone automate the web. Familiarity with CI/CD pipelines, Kubernetes and Docker, message queues, relational databases, automated testing, performance optimization, and zero-downtime multi-region deployments.
Senior Mechanical Engineer, Test Infrastructure Form EnergySenior Mechanical Engineer, Test InfrastructureBerkeley, CAYou will be invested in developing and deploying novel, state-of-the-art test equipment including the design of mechanical and fluid handling systems, and electronics test stands supporting Hardware In the Loop (HIL) testing, while collaborating with the electrical subteam and supporting our operations team in keeping our tests online. Activities including designing, drafting, and manufacturing components & assemblies; engineering analysis including FEA, heat transfer, fluid mechanics, material selection, and manufacturability; communicating with stakeholders.
Member of Technical Staff: Data Infrastructure & Data Operations Walden RoboticsMember of Technical Staff: Data Infrastructure & Data OperationsSan Francisco, CaliforniaAs a senior IC, you'll own the architecture and reliability at the core of that platform—ingestion, storage, transformation, and the data operations that keep quality high at scale—working hand in hand with the teams who produce and depend on that data. Participation in E-Verify does not limit your right to work and verification will only be completed after you become an employee with Walden Robotics.
Machine Learning Infrastructure Engineer ZensorsMachine Learning Infrastructure EngineerSan Francisco, CaliforniaBuilding Efficient Operators: Working across the entire ML framework/compiler stack (e.g., PyTorch, CUDA, TensorRT, and NVIDIA DeepStream) to write custom optimized ML operator libraries. Your responsibilities will include: Optimizing Core ML Pipelines: Identifying key bottlenecks in our current video analytics pipeline and performing in-depth analysis to ensure the best possible performance on current server and edge compute architectures.
AI/ML Infrastructure Engineer ZensorsAI/ML Infrastructure EngineerSan Francisco, CaliforniaBuilding Efficient Operators: Working across the entire ML framework/compiler stack (e.g., PyTorch, CUDA, TensorRT, and NVIDIA DeepStream) to write custom optimized ML operator libraries. Optimizing Core ML Pipelines: Identifying key bottlenecks in our current video analytics pipeline and performing in-depth analysis to ensure the best possible performance on current server and edge compute architectures.
Mechanical Engineer, Test Infrastructure BelcanMechanical Engineer, Test InfrastructureBerkeley, caDerisking & Validation: Work closely with the Design Engineering and Test teams to translate high-level testing requirements into functional mechanical hardware that identifies failure modes early in the development cycle. * System-Level Integration: Create test environments that accurately simulate real-world conditions for our battery packs and auxiliary systems (pumps, manifolds, and power electronics).
Infrastructure Engineer IvoInfrastructure EngineerSan Francisco, CaliforniaRun Kubernetes like it's your own startup within the startup — own multi-cluster, multi-region deployments across AWS/GCP/Azure, with failover and disaster recovery that actually works when it matters (not just on paper). Office Perks: Enjoy a vibrant Downtown San Francisco office with catered lunch five days a week, premium snacks and coffee, an in-building gym, and a dog-friendly environment.
Senior Infrastructure Engineer IvoSenior Infrastructure EngineerSan Francisco, CaliforniaRun Kubernetes like it's your own startup within the startup — own multi-cluster, multi-region deployments across AWS/GCP/Azure, with failover and disaster recovery that actually works when it matters (not just on paper). Office Perks: Enjoy a vibrant Downtown San Francisco office with catered lunch five days a week, premium snacks and coffee, an in-building gym, and a dog-friendly environment.
Staff Infrastructure Engineer IvoStaff Infrastructure EngineerSan Francisco, CaliforniaRun Kubernetes like it's your own startup within the startup — own multi-cluster, multi-region deployments across AWS/GCP/Azure, with failover and disaster recovery that actually works when it matters (not just on paper). Office Perks: Enjoy a vibrant Downtown San Francisco office with catered lunch five days a week, premium snacks and coffee, an in-building gym, and a dog-friendly environment.
Senior Software Engineer (Backend, Infrastructure Focus) KiraSenior Software Engineer (Backend, Infrastructure Focus)San Francisco, CaliforniaWhile this is a backend-leaning role, the ideal candidate is comfortable going full-stack when needed, partnering closely with product teams to ship end-to-end features. Kira is a rapidly growing startup backed by top-tier Venture Capital funds including New Enterprise Associates (NEA), Andrew Ng’s AI Fund , and Primavera.