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AI Startup Jobs

AI Startup Jobs, page 3

AI Research Engineer

1d ago
Dscout

Dscout

Dscout is seeking an AI Research Engineer to join their new AI Training & Evals unit. This team focuses on building human data and evaluations to determine if AI performs effectively for real people in real-world contexts. While AI models may excel at benchmarks, they often surprise users in practice. This role bridges that gap by leveraging Dscout's decade of experience in capturing human behavior to create training data, evaluations, and benchmarks that AI teams can trust. The position offers a unique opportunity to work on unsolved problems in AI measurement, study real participants in their own context, and contribute to publishing novel methods and benchmarks.

$250k - $400k

San Francisco, CA remote
PythonAI AgentsAI +1 more

Software Engineer, Imagine Safety

5mo ago
x

xAI

The Imagine team is redefining AI-driven media experiences for Grok users worldwide. As a Product Safety Engineer on the Imagine team, you will build the critical safety systems and infrastructure that ensure Grok’s multimodal generation capabilities (images, video, audio, and beyond) are powerful, delightful, and responsibly deployed. You’ll design and scale safeguards, detection systems, and evaluation frameworks that prevent harm while preserving creativity and user freedom. Your work will directly shape how millions of users experience generative media — balancing rapid innovation with rigorous safety, trustworthiness, and alignment with SpaceXSI's mission. If you’re a driven engineer passionate about AI safety, content integrity, and building robust systems that protect users without stifling innovation, this is your opportunity to make a lasting impact at the frontier of multimodal AI.

$180k - $440k

Palo Alto, CA onsite
KubernetesRustMachine Learning +3 more

Senior / Staff Software Engineer — Product (Backend-Focused)

1d ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking Senior and Staff Product Engineers with strong backend experience to help shape and deliver product capabilities that simplify complex workflows for users. This role involves owning backend features from concept to production, collaborating closely with Product, Design, and Engineering teams. You will be instrumental in building and evolving APIs, services, data models, and workflow capabilities that support the product, focusing on areas like data cataloging, agent benchmarking, and workflow automation. The ideal candidate possesses sound technical judgment and a commitment to product quality, usability, and impact.

$208k - $315k

San Francisco, CA (Hybrid) hybrid
PythonGoRust +5 more

Software Engineer, Training/Inference (C++)

2y ago
x

xAI

SpaceXSI is building the high-performance inference platform that serves Grok to millions of users daily with exceptional speed and reliability. As a Member of Technical Staff - Inference, you will be instrumental in designing and optimizing large-scale model serving systems from the ground up. This includes owning distributed infrastructure components like global KV cache, continuous batching, load balancing, and auto-scaling, as well as delving into deep low-level optimizations such as GPU kernels, quantization, and speculative decoding. This is a high-impact role where your contributions will directly influence the speed and reliability of user interactions with Grok at a massive scale.

$180k - $440k

Palo Alto, CA; Seattle, WA onsite
RustModel ServingCI/CD +8 more

Staff Applied AI Engineer - Enterprise AI Solutions

25d ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a Staff Applied AI Engineer to join their frontier AI data lab. In this role, you will research and implement state-of-the-art Generative AI and machine learning techniques to deliver impactful solutions for customers. You will work directly with clients to understand their needs, design AI solutions, and contribute to Snorkel's tooling by translating real-world challenges into reusable recipes and workflows. This position is ideal for individuals who enjoy solving complex problems, bridging AI technology with business value, collaborating with customers, staying current with AI research, and standardizing solutions into internal tooling.

$230k - $360k

New York City, NY (Hybrid); San Francisco, CA (Hybrid); United States (Remote) hybrid
LangGraphCrewAILlamaIndex +13 more

Senior / Staff Software Engineer — Platform

1d ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking experienced Platform Engineers to build and operate the core infrastructure and services powering their AI data platform. This role involves designing and implementing event-driven data flows, agent infrastructure, and systems for data lineage, governance, and auditing. You will play a key role in a foundational architecture shift towards an event-first platform, making decisions that will impact the company's scalability for years to come. The position offers significant ownership and the opportunity to shape the future of Snorkel's platform.

$220k - $300k

New York City, NY (Hybrid); San Francisco, CA (Hybrid) hybrid
AWSPythonTerraform +2 more

Sr. Software Engineer, Multimodal Understanding

6mo ago
x

xAI

SpaceXSI is building Super Intelligence to help humanity understand the universe, and you will join the multimodal team to push toward superhuman multimodal intelligence. This role involves advancing understanding and generation across modalities—image, video, audio, and text—spanning the full stack from data curation to end-to-end product experiences. You will collaborate cross-functionally to deliver frontier capabilities in multimodal reasoning, world modeling, tool use, agentic behaviors, and interactive human-AI collaboration, contributing to models that can see, hear, reason about, and interact with the world in real time.

$180k - $440k

Palo Alto, CA onsite
KubernetesPythonRust +9 more

Senior / Staff Software Engineer — AI Platform

1mo ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking experienced Software Engineers at Senior/Staff levels to join their AI Platform team. This role involves building the core infrastructure and systems that power AI development at scale, focusing on synthetic data generation, evaluation, agentic workflows, simulation environments, and LLM infrastructure. You will work on systems designed to make inherently non-deterministic workloads observable, reproducible, measurable, and scalable, enabling rapid experimentation and reliable production systems for AI models and agents.

Salary not listed

New York City, NY (Hybrid); San Francisco, CA (Hybrid) hybrid
AWSKubernetesPython +7 more

Senior Manager, Coder Fellows

1d ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a leader to manage a portfolio of Coding Fellows who create high-quality technical content for training and evaluating AI systems. This people-first role focuses on the management layer across multiple projects, encompassing expectations, performance, support, development, and administration. While technical depth is necessary to understand and discuss Fellow work, the primary responsibility is people management rather than day-to-day technical leadership.

$175k - $250k

United States (Remote) remote Full-time
Evals

Research Scientist - Human-AI Systems

1mo ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a Research Scientist to advance the creation of high-quality data and environments for AI agents. You will build and optimize pipelines that integrate real-world data, automated generation, and human expert input. Collaborating with domain experts, academic partners, customers, and internal teams, you will scale these pipelines to address frontier model performance gaps and enhance data and environment diversity. Your work will empower human knowledge and judgment, enabling experts to refine data and agentic environments, solidifying Snorkel's position as a leader in frontier data solutions. This role is perfect for individuals passionate about advancing frontier AI through data and environment creation, and who enjoy translating research into scalable, reusable systems.

$200k - $375k

New York City, NY (Hybrid); San Francisco, CA (Hybrid); United States (Remote) remote
LLMAI AgentsNLP +4 more

Research Scientist

1y ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a Research Scientist to bridge the gap between cutting-edge research and real-world AI systems. This hands-on role involves prototyping, building, and deploying innovative AI solutions, translating research breakthroughs into scalable, practical applications. The company operates in a fast-paced, high-impact environment, seeking individuals who thrive on rapid iteration, solving open-ended challenges, and driving innovation from research into production.

$200k - $375k

New York City, NY (Hybrid); San Francisco, CA (Hybrid); United States (Remote) remote
AWSGoogle CloudPython +9 more

Manager, Forward Deployed Engineering

7mo ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a Manager, Forward Deployed Engineering to establish and lead the Forward Deployed Engineering (FDE) function within the Data-as-a-Service (DaaS) organization. This role is responsible for the technical execution of DaaS delivery, managing the systems, workflows, and quality frameworks for large-scale dataset production. As a player-coach, you will define strategy and architecture while remaining hands-on with implementation, working at the intersection of data engineering, ML engineering, and production operations to enhance technical delivery capabilities.

$200k - $320k

New York City, NY (Hybrid); San Francisco, CA (Hybrid) hybrid
PythonLLMSQL +3 more

Forward Deployed Researcher - Data as a Service

8mo ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking Forward Deployed Researchers to partner with frontier AI labs on challenging data problems. This customer-facing role requires deep technical and research expertise to help design complex data and environments that enhance frontier model performance. You will act as a thought partner, working at the intersection of research, technical strategy, and customer collaboration. Your responsibilities will include scoping training data needs, designing RL environments, developing evaluation frameworks, analyzing model behavior, and translating customer objectives into technical plans.

$160k - $400k

New York City, NY (Hybrid); San Francisco, CA (Hybrid); United States (Remote) remote
PythonLLMRLHF

Senior/Staff Forward Deployed Engineer - Data as a Service

1y ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a Senior/Staff Forward Deployed Engineer to join their frontier AI data lab. This engineering delivery role involves translating ambiguous customer needs into production-grade data, evaluation, and ML-assisted workflows. You will own the end-to-end AI data pipeline lifecycle, developing and deploying ML-based workflows and building foundations to enhance human-in-the-loop data generation and review. This position operates at the intersection of data science, data engineering, AI engineering, and operations, partnering with the DaaS Delivery Operations team and cross-functional stakeholders to develop technical specifications, design evaluation workflows, and implement quality standards.

$180k - $320k

New York City, NY (Hybrid); San Francisco, CA (Hybrid) hybrid
PythonLLMSQL +2 more

Senior/Staff FDE - Synthetic Data Generation

2mo ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a Forward Deployed Engineer specializing in Synthetic Data Generation to collaborate with leading AI labs and enterprises on critical AI initiatives. In this role, you will spearhead the technical execution of complex customer projects that leverage synthetic data to enhance model training, evaluation, and overall performance. You will be responsible for transforming vague model and data challenges into concrete data strategies, developing robust generation and evaluation pipelines, and utilizing experimentation to continuously improve data quality and downstream model results. Your work will span the entire delivery lifecycle, from initial technical discovery and solution design to implementation, evaluation, and production deployment. Additionally, you will identify common patterns across engagements to develop reusable capabilities, technical standards, and product enhancements.

$180k - $320k

New York City, NY (Hybrid); San Francisco, CA (Hybrid) hybrid
AWSAzureGoogle Cloud +8 more

Senior/Staff FDE - CUA

2mo ago
Snorkel AI

Snorkel AI

Snorkel AI is seeking a Forward Deployed Engineer specializing in Computer Use Agents (CUA) to collaborate with leading AI organizations on their critical agentic AI projects. This role involves leading the technical execution of complex customer engagements focused on agents that interact with computers, browsers, and software to accomplish multi-step tasks. You will translate challenging product and model issues into effective task environments, datasets, and evaluation strategies to enhance agent reliability and overall performance. The position spans the entire delivery lifecycle, from initial technical discovery and solution design to implementation, evaluation, and production deployment. Additionally, you will identify common patterns across projects to develop reusable capabilities, technical standards, and product enhancements.

$180k - $320k

New York City, NY (Hybrid); San Francisco, CA (Hybrid) hybrid
PythonLLMAI Agents +4 more

Lead Software Engineer

2d ago
Cohere Health

Cohere Health

Cohere Health is transforming prior authorization using AI to improve efficiency, reduce costs, and enhance patient care. This role is on the Clinical Intelligence team, focusing on building impactful healthcare technologies that streamline and optimize the prior authorization process with AI/ML and Advanced Rules Engines. You will contribute to the functional and technical roadmap, support technical design, and drive feature development, testing, and delivery of their cloud platform and web applications. The role involves supporting all parts of the platform, from database to frontend, and performing production support duties. The company is recognized for its innovative AI-native platform and agentic AI-powered solutions, connecting health plans' strategic goals with providers' needs to optimize care speed, cost, and quality.

Salary not listed

Hyderabad, Telangana, India onsite Full-time
CohereAWSAzure +5 more

Backend Engineer, API

6mo ago
x

xAI

SpaceXAI is building AI systems to understand the universe and aid humanity. The team is small, highly motivated, and focused on engineering excellence, operating with a flat structure where all employees are hands-on and contribute directly to the mission. This role requires strong communication skills and the ability to share knowledge concisely. The ideal candidate will have a good understanding of building highly scalable and reliable production infrastructure, with familiarity in compiled languages like Rust, C++, or Go being highly beneficial.

£107k - £262k

London, England, United Kingdom onsite
DockerKubernetesGo +4 more

Senior Staff ML Engineer, AI Safeguards - Moveworks

2d ago
M

Moveworks

Moveworks is seeking a Senior Staff ML Engineer to join our AI Safeguards team. In this role, you will be instrumental in designing, building, and shipping critical safeguards within our agent harness. Your work will focus on protecting against prompt injection, single and multi-turn jailbreaks, toxicity, sensitive topics, and sensitive data exposure. You will develop robust evaluation frameworks to measure the efficacy of these safeguards, addressing both false positives and false negatives using diverse datasets. Collaboration with our Security team will be key, translating their findings into actionable eval cases and fixes, and co-developing mitigations. You will also select, integrate, and fine-tune detection models within a shared stack serving both commercial and government environments, while carefully balancing quality, latency, and cost for controls operating in the request path. Additionally, you will build configurable safeguard policies to empower customers in managing sensitive topics and monitor safeguard behavior in production, addressing any regressions.

Salary not listed

Mountain View, CALIFORNIA, United States onsite Full-time
PythonLLMFine-Tuning +4 more

Senior Product Engineer ($180k-$225k + Equity) - NYC

2d ago
Conveo

Conveo

Conveo.ai is a rapidly growing Y Combinator-backed company seeking a Senior Product Engineer to join its small, impactful engineering team. This role offers the unique opportunity to shape the company's future and own the full product development lifecycle, from customer problem identification to shipping working software. You will report directly to an engineering lead and collaborate closely with the CTO. Conveo is building an AI research platform that enables fast, affordable, and high-quality consumer and B2B research, used by global brands like Unilever and Google to help companies better understand their customers.

$180k - $225k

New York hybrid Full-time
AWSGoogle CloudTypeScript +7 more

Software Engineer - Kernels

2d ago
M

MatX

MatX is building the compute platform for AGI, developing vertically integrated full-stack solutions from silicon to systems. We focus on hardware and software to train and run the largest ML workloads for AGI, primarily using the Rust programming language. This role involves designing and optimizing kernels that interface directly with our hardware, working in partnership with ML Research and Hardware Engineering teams, and providing expertise on hardware architecture from a programmer's perspective to ensure seamless integration with the software stack.

$160k - $275k

Mountain View (HQ) or Remote hybrid Full-time
RustTransformersC++

Staff AI Inference and Acceleration Engineer

4mo ago
F

Figure AI

Figure is an AI robotics company developing autonomous general-purpose humanoid robots with the goal of shipping robots with human-level intelligence. These robots are engineered to perform a variety of tasks in home and commercial markets. We are seeking a Staff AI Inference & Acceleration Engineer to join our Platform Software team. This role will be responsible for the on-board inference architecture for our humanoid robots, acting as the technical authority on how AI workloads are mapped, optimized, and executed across the robot's compute hardware. The primary objective is to reduce power consumption and cost while meeting strict latency and reliability demands for a real-time autonomous system.

$180k - $275k

San Jose, CA onsite Full-time
PythonJAXCUDA +3 more

Head of Platform Engineering, Enterprise AI

12d ago
Turing

Turing

Turing's mission is to accelerate superintelligence to drive real economic progress. The company works with frontier AI labs to generate high-quality datasets, reinforcement learning environments, and frontier research benchmarks. Turing also partners with Fortune 500 enterprises to build and deploy end-to-end agentic AI systems within mission-critical workflows. This role involves leading the Turing Enterprise AI Platform technical team, which is being built out for a late 2025 SDK release and a Q1 2027 tenant onboarding. The goal is to grow the team to eight to ten members and collaborate with the Chief AI Architect on client-facing architecture and evaluation.

Salary not listed

New York, New York, United States onsite
AI AgentsFine-TuningReinforcement Learning +1 more

Software Engineer, Kernels/CUDA (C++)

7mo ago
x

xAI

SpaceXSI is building one of the world's largest AI supercomputers from the ground up. As part of the Compute Infrastructure team, you will own both the raw GPU supercomputer and the platform layer that runs on top of it. You will work across the full stack—from low-level GPU kernel optimizations and Linux kernel internals to massive-scale orchestration and virtualization—to make training and inference at SpaceXSI as fast, reliable, and scalable as possible. This is a broad, high-impact role that combines hardcore supercompute and compute infrastructure work. Your contributions will directly accelerate Grok's training speed and overall AI progress.

$180k - $440k

Palo Alto, CA; Seattle, WA onsite
AICUDAGPU +3 more