C# Jobs

Applied Intuition is a rapidly growing company powering the future of physical AI, valued at $15 billion and headquartered in Sunnyvale, California. We are building the digital infrastructure to bring intelligence to every moving machine, serving industries like automotive, defense, and construction. Our solutions are trusted by leading global automakers and the US military. We are an in-office company, expecting employees to work primarily from our offices five days a week, while also offering flexibility for occasional remote work and schedule management.

$60k - $300k

Glean is seeking a Machine Learning Engineer to enhance the quality of its AI Assistant and autonomous agents. This role focuses on production machine learning, LLM-powered systems, and product engineering, with an emphasis on building, evaluating, and refining assistant experiences to be useful, reliable, and grounded in enterprise workflows. The ideal candidate is driven by shipping production systems rather than pure research and is eager to improve Glean's assistant through stronger signals, tighter feedback loops, and better end-to-end execution quality.

$180k - $205k

Glean is seeking engineers to contribute to building the world's premier search and assistant product for the workplace. Our engineers tackle a variety of systems, including query and document understanding, domain-adapted language models, natural language question-answering, and evaluation. You will collaborate closely with customers to understand their challenges and apply the most effective solutions, whether simple or complex.

$140k - $265k

Fireworks is seeking a Member of Technical Staff for its Research team to push the boundaries of generative AI. This role involves advancing LLMs and multimodal systems through foundational research, focusing on enhancing model efficiency, accuracy, and scalability to shape high-performance AI infrastructure. You will collaborate with experts in deep learning, distributed systems, and optimization to translate cutting-edge research into practical applications and influence how leading companies build and deploy AI.

Lambda, a leader in AI cloud infrastructure, is seeking a Senior Solution Engineer to join their growing team. This role is crucial in enabling customers to achieve their business goals with AI infrastructure by partnering with leading AI researchers and enterprise engineering teams. The ideal candidate will design, scale, and optimize high-performance GPU cloud solutions, turning complex compute challenges into seamless, production-ready AI infrastructure. This position requires a customer-first mindset and technical mastery to drive growth and customer success.

Crusoe is seeking a Senior Production Engineer to join their Managed Cloud team. This role is crucial for ensuring the reliability and scalability of Crusoe's AI-optimized cloud platform, delivering a seamless cloud experience at scale. The engineer will be responsible for building and delivering highly available, performant, and cost-efficient AI infrastructure to support compute-intensive, latency-sensitive workloads for customers.

$170k - $205k

Glean is seeking a Backend/Infrastructure Engineer to build and evolve the Storage layer that powers a highly available, performant, secure, and cost-effective suite of storage options for all data at Glean. You will own the storage systems that handle Glean’s most sensitive data, directly enabling organizations at scale to discover and act on their critical knowledge. Your work will support millions of searches, chat interactions, and agent workflows, delivering robust uptime guarantees, autoscaling, and reliable alerting/monitoring across multiple cloud providers. As part of the Storage team, you will be responsible for a critical piece of Glean’s infrastructure, working closely with several other teams to support their workloads. You will also work across the stack to abstract cloud differences, reduce human intervention through self-healing systems, and drive real business impact by enabling Glean’s ever-growing scale.

$140k - $265k

Glean is seeking a Software Engineer to join its Data Foundations team. This team is responsible for the entire data ingestion and management layer that powers Glean's Search, AI Assistant, and Agent products. The work directly impacts the quality, freshness, and trustworthiness of the knowledge users interact with daily. You will contribute to building and scaling connectors to various SaaS and on-prem systems, handling complex data synchronization, and transforming raw enterprise content into structured representations optimized for search and LLM reasoning. This role involves designing data schemas, enrichment pipelines, and integrating AI product capabilities to automate tasks and enhance data utilization.

$180k - $300k

Luma is seeking a Tech Lead Manager for its Inference team to own the entire inference serving stack, encompassing routing, scheduling, and fleet-wide orchestration across thousands of GPUs, multiple clouds, and hardware vendors. This is a hands-on role where at least half of your time will be dedicated to architecting and building core platform components, making critical design decisions, and debugging complex incidents. You will also be responsible for leading, growing, and developing the inference engineering team, including hiring, coaching, and managing on-call rotations. The role involves setting the technical roadmap for serving infrastructure, owning platform SLOs and economics, and partnering with research to deploy new architectures and integrate serving into online RL and evaluation loops. The ideal candidate has extensive experience operating large-scale inference fleets and a genuine desire to remain hands-on in building and improving the serving stack.

$30k - $60k

Harvey

Harvey is transforming professional services by combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise. We are a fast-growing company with strong product-market fit, seeking individuals who want to do the best work of their careers. As a Staff Software Engineer on the Model Infrastructure team, you will lead the design and development of the systems that power every AI request at Harvey. You will partner closely with AI Research, Product Engineering, and Infrastructure teams to build a highly reliable, scalable, observable, and efficient platform.

$236k - $290k

Crusoe is seeking a Staff Applied AI Inference Engineer to accelerate the abundance of energy and intelligence by optimizing large language models for production environments. This role involves owning the inference stack end-to-end, from profiling costs and implementing modern optimization techniques to deep dives into serving code when defaults are insufficient. The work is applied, focusing on real customer deployments with varying models, traffic, latency targets, and cost constraints. You will collaborate with customer engineering teams to tailor deployments, transition workloads from proof-of-concept to production, and ensure engineered gains are realized by users. This is a hands-on engineering position requiring coding, profiling, and low-level optimization, with a customer-facing component involving product and technical solutions work.

$215k - $260k

Glean is seeking backend and infrastructure engineers to build platforms that measure, explain, and improve AI quality at scale. This role involves owning core systems for large-scale evaluations, processing traces, powering observability workflows, and providing engineers with clear signals about assistant and agent behavior. You will work on systems that need to be scalable, secure, permissions-aware, fast, and cost-efficient, directly shaping how AI products are shipped. This is an opportunity to work at the intersection of distributed systems, data infrastructure, applied AI, and product quality, helping to build the systems that determine if new models, prompts, retrieval strategies, and agent workflows are ready for enterprise customers.

OpenAI

OpenAI is seeking an experienced systems generalist to join the GPT Infrastructure team. This role involves building an automated inference optimization platform that handles workload analysis, target hardware profiling, compiler and runtime context, and trusted verification. You will design and implement both the OpenAI-hosted control plane and the partner-side software responsible for evaluating candidates on real accelerator hardware. The goal is to create a reliable system that ensures reproducible performance results and maintains clear trust boundaries for sensitive information, turning a powerful research workflow into a scalable product.

Applied Intuition is seeking a Perception Autonomy Engineer to develop, integrate, and maintain real-time sensor software solutions for autonomous vehicles across various domains. You will work with a team to enhance capabilities and demonstrate solutions in real-world scenarios on diverse hardware platforms. The role involves designing, developing, and integrating AI/ML sensor algorithms to interface with different platforms, ingest mission information, and support autonomy objectives. This includes fusing information from state-of-the-art sensors like EO, IR, acoustics, radar, and RF to create autonomous sensor controllers.

$10k - $20k

Crusoe is seeking a Senior Software Engineer to build and own customer-facing observability products within Crusoe Cloud's Cloud Monitoring Service. This team delivers managed logs and self-service observability capabilities, enabling customers to collect, search, and act on their telemetry efficiently. You will be responsible for end-to-end ownership of product surfaces, including APIs, backend services, and the user onboarding and configuration experience, with a strong emphasis on reliability and ease of use.

$175k - $210k

Skild AI is seeking a Computer Vision AI & ML Engineer to design, build, and deploy advanced perception systems for real-world robotics and automation. You will work across the full machine learning lifecycle—model development, data strategy, evaluation, and production integration—to deliver robust, high-performance vision capabilities. This role combines applied research with hands-on engineering and offers the opportunity to influence both architecture and roadmap decisions.

Applied Intuition is seeking a Motion Planning Engineer to design and ship deterministic, safety-critical planning systems for autonomous vehicles. This role focuses on classical motion planning, predictable behavior, and large-scale evaluation, rather than deep learning-driven planning. You will contribute to and learn from best practices in the nascent autonomy industry, working in a dynamic, customer-focused team. If you are hands-on and looking for a place to have a multiplying effect on making autonomous systems a reality, Applied is the place for you!

$60k - $300k

Scale AI

Scale AI is seeking a highly skilled and motivated Software Engineer to join our dynamic Public Sector Engineering team. You will play a critical role in supporting Scale’s government customers by scoping and developing onsite solutions. Your expertise will be instrumental in designing and implementing systems that can handle interactions with existing customer systems to help our products integrate into existing customer workflows. We are looking for an exceptional Senior Software Engineer to architect and build the foundational data infrastructure that will serve as the brain of a project ecosystem. You will be responsible for designing highly novel data models and processing pipelines capable of handling massive quantities of output data from complex simulations. At the core of this role is the challenge of building a foundational data ensemble—a unified architecture that seamlessly aggregates, structures, and stages diverse sources of simulation outputs and user inputs. Your systems will manage enormous batch throughput jobs with strict, minimal latency requirements, ensuring that downstream AI systems and language models have the exact context they need to actionably reason over complex, multi-dimensional scenarios.

$216k - $300k

Together AI

The Turbo Research team focuses on making post-training and reinforcement learning for large language models efficient, scalable, and reliable. This work intersects RL algorithms, inference systems, and large-scale experimentation, where inference costs significantly impact training efficiency and the practicality of learning algorithms. As a research intern, you will investigate RL and post-training methods whose performance and scalability are closely tied to inference behavior, co-designing algorithms and systems. Projects aim to enable new experimental regimes, including larger models, longer rollouts, and more complex evaluations, by re-evaluating the interaction between inference, scheduling, and training.

Together AI

Together.ai is building state-of-the-art infrastructure for efficient and scalable inference of large language models (LLMs). The company's mission is to optimize inference frameworks, algorithms, and infrastructure to push the boundaries of performance, scalability, and cost-efficiency. They are seeking an Inference Frameworks and Optimization Engineer to design, develop, and optimize distributed inference engines for multimodal and language models at scale. This role will focus on low-latency, high-throughput inference, GPU/accelerator optimizations, and software-hardware co-design, ensuring efficient large-scale deployment of LLMs and vision models. This position offers a unique opportunity to shape the future of LLM inference infrastructure and ensure scalable, high-performance AI deployment across diverse applications.

$160k - $230k