AI Startup Jobs

SigNoz

SigNoz is seeking a Developer Relations Engineer to be the face of their open-source observability platform in the Bay Area. This role involves engaging with customers and the engineering community to share compelling stories about how SigNoz helps debug and scale production systems, particularly in the context of AI agents. You will be responsible for identifying customers with interesting use cases, creating technical content like videos and case studies, and representing SigNoz at meetups, conferences, and events. This is a hands-on role with the potential to build and lead a US DevRel team.

$150k - $220k

Our Internal Acceleration team is seeking a Research Engineer to build agents that accelerate the production of frontier tokens. You will collaborate directly with founders and embed with the production team to develop new agentic harnesses and operating systems, transforming hardware development in an AI-native world. This role involves working on harnesses, tool use, context, memory, execution environments, and evaluation frameworks to enable agents to perform long-running, useful engineering tasks. We are looking for individuals who thrive in ambiguous environments, possess strong product sense, and are eager to own problems end-to-end, viewing this as an opportunity to shape future ventures. The work is time-sensitive and business-critical, demanding dedication beyond a standard 9-5 schedule.

$150k - $400k

Blee

Blee is seeking an Applied Scientist to specialize in agent system design, focusing on architecting and implementing the next generation of intelligent compliance systems. This role involves designing frameworks where multiple agents, powered by custom and foundational models, collaborate to identify, track, and explain compliance flags. You will also be responsible for building and optimizing applied AI/ML pipelines, including model fine-tuning, prompt engineering, evaluation frameworks, and customer-specific AI configurations, and training models based on user feedback to deliver more targeted compliance recommendations.

$150k - $275k

d-Matrix

d-Matrix is seeking a Senior Staff Inference Performance Engineer to join their Inference Cloud Engineering team. This role is responsible for the end-to-end performance of workloads deployed on d-Matrix's inference services, ensuring they perform at least as well as on bare metal. The engineer will diagnose and isolate performance issues across the full serving path, from orchestration to inference internals, and will be responsible for either fixing problems directly or handing them off to the appropriate owning team with clear evidence. The role involves assessing scalability, defining node requirements for optimal deployment, and building telemetry and benchmarks to support these efforts. The ideal candidate will mentor other engineers in a profiling-first methodology.

$175k - $265k

Confido

Confido is seeking a Senior ML Ops Engineer to be the first dedicated owner of its ML platform. This role will be responsible for the pipelines, serving, and cloud foundation that enable AI/ML models and agents to operate reliably and cost-efficiently in production. The engineer will ensure the platform can handle large-scale workloads, including document understanding, forecasting, and agentic systems, with a focus on making AI/ML development and deployment seamless for the AI/ML team.

$210k - $300k

Manifold is seeking Forward Deployed Engineers (FDEs) to join our team at the intersection of AI, data infrastructure, and life sciences. In this high-impact role, you will collaborate directly with scientists and clinicians across biopharma, academic research, and health systems to implement Manifold's platform with their data, guiding projects from initial scoping through to production. As the primary technical and scientific contact for your accounts, you will operate autonomously, thrive under ambiguity, and represent Manifold at the highest level, earning customer trust and driving successful outcomes.

$165k - $190k

Temporal

Temporal is seeking a Staff Software Engineer to lead AI agent optimization efforts. This role involves designing and building tools and mechanisms to help users optimize AI agents for token spend, response time, and result quality. You will focus on techniques like model routing, multi-agent architecture, cache policy, and context management, requiring direct experience in this problem domain. You will collaborate with other AI Foundations team members on agentic development, ecosystem integrations, and policy/security systems, blending theory and practice to solve customer problems and ship fast.

$170k - $278k

Cursor

SpaceXAI is building Super Intelligence to help humanity understand the universe, from supercomputers to large language models and user-facing applications. As a Software Engineer on the Model Lifecycle and Signals team, you will be responsible for integrating frontier models into user-facing products at a massive scale. This role involves deciding which models to use, monitoring their performance, and providing feedback to shape future model development. You will work at the intersection of infrastructure, data, and product, bringing models from preview to production, analyzing real-world data, and collaborating with research, inference, product, and data science teams to improve both products and models. Your contributions will have a compounding impact across all products and shipped models.

Salary not listed

Our Internal Acceleration team is building agents to speed up the production of frontier tokens. You will collaborate directly with founders and embed with our special projects team to develop new agentic harnesses and operating systems, fundamentally changing how hardware is built in an AI-native world. Your success will be measured by the acceleration of Etched's progress, not just lines of code. This role is ideal for engineers who excel in ambiguous environments, possess strong product intuition, and are eager to own problems from inception to completion. It's a dynamic, time-sensitive, and business-critical position that requires dedication beyond a standard 9-5.

$150k - $400k

d-Matrix

d-Matrix is at the forefront of software and hardware innovation, aiming to unleash the potential of generative AI. We foster a culture of respect, collaboration, humility, and direct communication, valuing diverse perspectives to create better solutions. We are seeking passionate, execution-driven individuals ready to tackle challenges and shape the future of AI. The Inference Cloud Engineering team is responsible for the deployment and orchestration technology behind d-Matrix’s inference services, including an internal cloud for model testing and a customer-facing cloud with self-service inference endpoints. This role will own the end-to-end testing and release process for this critical software, ensuring features are proven, releases are predictable, and rollbacks are safe, even with scarce and shared hardware resources.

$155k - $235k

Our Internal Acceleration team is building agents to accelerate the production of frontier tokens. You will work directly with founders and embed with our production team to create new agentic harnesses and operating systems, transforming hardware development in an AI-native world. Success is measured by how much faster the company moves, not just lines of code. This role is for engineers who thrive on ambiguity, possess strong product sense, and want to own problems end-to-end, acting as a launchpad for future founders. The problems are time-sensitive and business-critical, and the role demands dedication beyond a typical 9-5.

$150k - $400k

d-Matrix

d-Matrix is seeking a Principal Test Automation Engineer to define and build AI-enabled automation across the software development lifecycle, from build and CI through testing and release. This role involves setting technical direction for AI-enabled workflow automation, building foundational components like agent harnesses and integrations, and developing evaluation methods to ensure automation effectiveness. You will work hands-on, shipping critical components and collaborating with other engineers to raise the bar for AI adoption in daily engineering tasks. The ideal candidate will have extensive production software engineering experience, strong Python skills, and experience shipping AI-enabled tools in production.

$195k - $285k

Our Internal Acceleration team is building agents to accelerate the production of frontier tokens. You will work directly with founders and embed with our kernels team to develop new agentic harnesses and operating systems, transforming hardware development in an AI-native world. This role focuses on harnesses, tool use, context, memory, execution environments, and evaluations that enable agents to perform long-running, useful engineering work. We seek engineers who thrive in ambiguity, possess strong product sense, and are eager to own problems end-to-end, understanding that this is a time-sensitive and business-critical role that may not adhere to a 9-5 schedule.

$150k - $400k

Cosine is seeking an Applied ML Technical Lead to join their UK AI lab, focusing on developing and deploying advanced AI capabilities for UK Defence and national security organizations. This is a hands-on technical leadership role where you will guide the technical direction and day-to-day progress of applied ML projects, translating research into operational capabilities. You will work across machine learning development, deployment, and customer-facing technical delivery, potentially involving training and evaluating models on complex sensor data, and engaging with Defence stakeholders to understand needs and shape priorities. The role requires coordinating ML researchers, software engineers, and infrastructure teams, identifying and resolving technical risks, and establishing clear evaluation criteria to demonstrate progress through measurable improvements and working capabilities.

Salary not listed

Cohere Health

We are seeking a Senior Software Engineer - AI to join our Engineering team. In this role, you will build intelligent agents and applications serving health insurance plans covering over 15 million people. You'll partner closely with product, data science, and clinical teams to build the foundation that transforms how clinical intelligence is delivered at scale. This is an opportunity to make a direct impact on healthcare outcomes while working with modern technologies in a fast-paced, collaborative environment.

Salary not listed

Ema builds AI Employees for HR, IT, and Finance, taking on busy work so people can focus on more impactful tasks. Founded by former executives from top tech companies and backed by leading investors, Ema is at the forefront of Agentic AI in production, shipping real systems that run business processes at scale. This role focuses on ensuring the security of AI agents and the platform they operate on, especially as they interact with sensitive enterprise data and systems. You will build security controls for autonomous agents in multi-tenant environments, addressing zero-trust challenges and securing various attack surfaces including LLM orchestration, tool integrations, code execution, and browser automation.

Salary not listed

Cosine is developing autonomous software-engineering systems for organizations that prioritize reliability, security, and control. Our Lumen Enterprise models are designed to understand and modify real codebases, utilizing tools, running tests, and producing maintainable software. We are seeking a Machine Learning Engineer to enhance and train these models across the entire training stack, including pre-training, supervised fine-tuning, and reinforcement learning. This role offers exposure to all facets of the model training lifecycle, from performance profiling to implementing new RL algorithms, and requires a hands-on approach with a focus on software quality.

Salary not listed

Cohere Health

Cohere Health is seeking a Staff Software Engineer to join their Integrations team. This role involves designing, developing, and scaling highly available healthcare integration systems that support prior authorization workflows across providers, payers, and delegated entities. You will provide technical leadership, drive platform engineering, and lead the development of secure integrations with internal and external systems. The position emphasizes cloud infrastructure, deployment automation, distributed architectures, and operational excellence, ensuring system reliability and performance. You will also champion automated testing, lead production issue resolution, and collaborate cross-functionally to align solutions with organizational goals. Mentorship and team development are also key aspects of this role, fostering technical excellence and contributing to hiring and coaching initiatives.

Salary not listed

Cohere Health

We are seeking a Staff Data Architect to serve as a senior technical leader responsible for architecting the complete lifecycle of data moves, transforms, and value creation across all product lines. You will own the blueprint for our enterprise data lakehouse, setting the standards, governance, and strategy to elevate data from an operational byproduct to the company's most valuable asset. This role requires deep mathematical and logical modeling expertise combined with a builder's instinct, including coding, rapid prototyping, and proving out next-generation AI data architectures. Experience with US healthcare domain data is essential.

Salary not listed

Cohere Health

Cohere Health is seeking a Staff Applied Scientist to play a critical technical leadership role in powering and scaling machine learning capabilities across their products. This role involves applying state-of-the-art machine learning, large language models, and agentic architectures to complex clinical and operational workflows to automate decision-making, improve data quality, and reduce administrative burden. You will partner closely with clinical operations, product, and engineering teams to uncover insights, inform strategic decisions, and design and evaluate ML systems that directly impact member and provider experiences. This position blends deep hands-on technical work with strategic influence, mentorship, and ownership across multiple work streams, while contributing to broader ML initiatives. The ideal candidate will have a Master's degree (PhD preferred) in a quantitative field and 7+ years of professional experience in applied machine learning or data science, with a strong understanding of Python, deep learning frameworks like PyTorch, and experimental design for production environments.

Salary not listed

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, focused on building AI/ML and Advanced Rules Engines to streamline and optimize the prior authorization process. You will contribute to the technical roadmap, support technical design, and drive the development, testing, and delivery of cloud platform and web applications. The role involves full-stack development, from database to frontend, with opportunities to integrate AI/LLM-based systems and potentially agent-based systems into product workflows.

Salary not listed

Cohere Health

Cohere Health is seeking a senior-level automation engineer to enhance release quality, environment reliability, and change safety across their healthcare platform. This role involves partnering with Product, Engineering, Platform, and SRE teams to develop scalable automation, guardrails, and validation systems. The engineer will shape automation strategy, integrate quality into the Software Development Life Cycle (SDLC), and define safe change management processes in a regulated, high-impact domain. This position offers significant influence over release safety, platform reliability, and how engineering teams deliver software.

Salary not listed

FurtherAI is building AI agents to revolutionize the insurance industry, a trillion-dollar market currently reliant on manual processes. We combine frontier agentic AI with deep domain expertise to transform critical industry operations. Having secured over $30 million in funding from top investors and experienced significant growth, we are a deeply technical company where engineers have a substantial impact on product direction. We are seeking an exceptional AI Engineer to lead our efforts in evaluating and continuously enhancing the quality of AI agents across our platform.

$300k - $350k

Cohere Health

Cohere Health is seeking a Senior Software Engineer to join their Data Platform team. This remote-first role involves designing and delivering large-scale, reliable, and governed data pipelines that power analytics, operations, and clinical intelligence. The ideal candidate will thrive on solving complex data challenges, mentoring others, and improving engineering standards while contributing to platform growth. You will operate across the end-to-end data lifecycle, ensuring data products are performant, compliant, and trustworthy by partnering closely with analytics engineers, architects, and product stakeholders.

$135k - $160k