AI Engineer Jobs at Startups

Cohere Health

We are seeking a Staff Software Engineer to join our Engineering department. In this role, you will direct a fast-paced, collaborative, agile team of software engineers in the design, development, and scaling of highly available AI healthcare products on the Cohere platform. You'll set the technical direction for how the platform evolves — owning architecture and design decisions that span multiple teams and outlive any single release. This is an opportunity to drive technical excellence, define customer-configurability capabilities, and establish patterns other teams build on at the intersection of healthcare interoperability and modern distributed systems. This is a remote-first role that may require travel to Boston, MA for new hire onboarding and occasional in-person team meetings and company events.

$185k - $225k

Parloa

Parloa is shaping the foundation of a new era in customer experience where customer support is no longer transactions, but meaningful exchanges. As Principal Software Engineer for Voice/VoIP, you will own the technical direction of our real-time voice infrastructure. This is a hands-on technical leadership role where you will set architectural direction, solve complex problems, and elevate the engineering organization's approach to voice systems. You will collaborate with infrastructure, AI/ML, and product teams to ensure our voice stack is fast, reliable, and globally scalable.

Salary not listed

PermitFlow

PermitFlow is redefining the construction industry with applied AI, tackling complex challenges in permitting, licensing, inspections, and project closeouts. Our AI agent workforce accelerates development for the nation's builders, having already delivered significant improvements in speed, accuracy, and visibility for over $20 billion in development. As the U.S. enters a new capex supercycle, joining PermitFlow means building the core AI infrastructure that will drive future reindustrialization. We are seeking a Staff/Principal Engineer to develop our core AI Assistant, its supporting infrastructure, and workflow agents, requiring both UX and technical expertise in a complex domain.

$250k - $300k

You.com is seeking a Developer Evangelist to build in public and make their Search, Contents, and Research APIs the go-to retrieval layer for AI agents, coding tools, and agent frameworks. In this role, you will create demos, sample applications, integrations, and open-source contributions, sharing your work through various developer channels like GitHub, Discord, Reddit, and livestreams. You will also be the technical and creative lead for hackathons and developer events, driving developer adoption and community engagement. This position is part of the Developer-Led Growth (DLG) team, with success measured by tangible developer adoption and retention.

$180k - $220k

LanceDB is seeking a Senior Documentation Engineer to enhance the understanding, adoption, and production use of their AI-native Multimodal Lakehouse. This role sits at the intersection of engineering, technical writing, and developer experience, focusing on translating complex data infrastructure concepts into clear explanations and practical examples. You will collaborate with engineering, product, and the open-source community to document new features, create runnable examples, and ensure guidance remains accurate as the product evolves. This position offers a unique opportunity to shape how documentation supports the growing ecosystem of AI-assisted development and significantly influence how developers and AI agents learn and build with LanceDB.

$180k - $250k

OpenRouter is seeking its first AI Inference SRE to ensure the operational health of its provider supply. This role will focus on making sure every endpoint is fast, correct, and available, and that problems are detected and routed around before customers are impacted. The SRE will be responsible for building and owning monitoring systems, improving detection and failover mechanisms, and managing incident response for provider-related issues. This position involves holding providers accountable through telemetry and SLO reporting, detecting quality regressions, automating manual operational tasks, and building tooling for capacity planning and launch readiness.

$245k - $295k

Dodo

Dodo is building the AI operating system for healthcare, impacting millions of patients and thousands of practices. This role involves working across voice, agents, integrations, data, and product to develop systems that power AI agents and are used daily by healthcare teams. You will have significant autonomy to own large parts of the product and infrastructure, from real-time systems to user-facing features.

Salary not listed

Netomi is seeking a Product Support Engineer to become a Subject Matter Expert on our agentic AI platform for enterprise customer experience. In this customer-facing role, you will develop in-depth knowledge of our product offerings, manage multiple projects, and work to resolve customer inquiries and support requests. You will be instrumental in ensuring our clients can effectively leverage our AI solutions to drive efficiency and enhance customer experiences.

Salary not listed

AgentMail

AgentMail is seeking a Developer Success Engineer to serve as the primary technical point of contact for developers integrating with AgentMail's AI agent inboxes. This role focuses on independently solving technical challenges, understanding developer goals, and identifying recurring issues. The objective is to not just answer questions, but to understand the root cause, learn from developer experiences, and improve the product and its documentation.

Salary not listed

Overview.ai is seeking a Senior Full-Stack Engineer to develop web tools and GenAI applications that enhance their edge-AI vision platform for manufacturing quality control. This role involves owning tools end-to-end, from React/TypeScript interfaces to Python backend services. You will work on the cutting edge of AI, building LLM-powered assistants, synthetic data generation tools, and agent-style workflow builders. The position offers high autonomy within a small, fast-paced team, allowing you to define approaches, ship quickly, and iterate with users.

Salary not listed

Simple AI

Simple AI is seeking founding software engineers to build the core systems behind their state-of-the-art voice AI agents for enterprise clients. This high-ownership role involves working across product to enhance agent speed, reliability, and capabilities in production environments. You will ship customer-facing features, optimize latency and reliability, develop internal tools, troubleshoot complex issues, and scale the platform to meet growing customer demand. Engineers collaborate closely with product and customers, requiring a fast-paced approach, ownership of system components, and a drive to build technology that directly impacts business revenue.

$130k - $280k

Mem0 is building the memory layer for AI agents, enabling them to remember conversations, learn from interactions, and build context over time. We are a Y Combinator-backed company with significant funding, powering millions of AI interactions for enterprise customers and an open-source community. This full-time, onsite role in San Francisco, CA, offers a unique opportunity to own the AI product surface of the Mem0 Platform. You will be responsible for the end-to-end frontend development, setting the visual and interaction standards for our dashboard, playground, and documentation. Working directly with the CTO, research, and customers, you will translate complex memory problems into intuitive user interfaces, shipping AI products to real users.

$150k - $250k

Cursor

SpaceXAI is building Super Intelligence to help humanity understand the universe. As a Product Engineer on the Grok Connectors team, you will build integrations that enable Grok, Cursor, and Grok Bot to perform real-world actions within commonly used tools such as Gmail, Outlook, Google Calendar, Microsoft Teams, GitHub, and Slack. You will be responsible for the end-to-end development of features, including OAuth sign-in, token management, tool schema design, ensuring reliability across millions of tool calls, and developing user interfaces for web, desktop, and mobile platforms. This role involves direct collaboration with enterprise customers and partners to deliver trustworthy connectors for large organizations.

Salary not listed

LlamaIndex is seeking a Head of Engineering to lead and develop their engineering team in building software that makes enterprise data useful for AI applications. This is a hands-on role where you will own engineering execution, technical direction, hiring, and team development. You will collaborate closely with company leadership and product teams to define product strategy and delivery. The ideal candidate has shipped and operated B2B API products, with experience in both model serving and model training, from experimentation and evaluation to deployment and production operations.

$200k - $300k

LangChain is seeking a Senior Fullstack Engineer to join the team building LangSmith, their commercial observability and evals platform. This role offers the opportunity to significantly influence the platform's technical direction while collaborating with enterprise customers, developer end-users, and internal stakeholders. You will be instrumental in shaping the future of AI agent engineering by contributing to a product used by a significant portion of the Fortune 500.

$175k - $240k

LangChain is building the foundation for agent engineering, enabling developers to create production-ready AI agents. With significant funding and a rapidly growing platform, the company offers open-source tools and a comprehensive platform for building, evaluating, deploying, and operating agents at scale. The LangSmith team specifically focuses on building the core platform for observability, evaluation, and production reliability of AI systems, including tracing, annotation, and run rules. This role is crucial for defining what AI observability looks like at production scale.

$180k - $240k

Tenstorrent is seeking a CPU Cluster Performance Architect to influence the performance and scalability of their next-generation CPUs. This role focuses on the intricate interactions between multiple CPU cores within a cluster, including cache hierarchies, coherent interconnects, memory bandwidth, and overall system behavior. It's a hands-on architecture position that leverages performance models and simulation to identify bottlenecks, evaluate design tradeoffs, and guide architectural decisions early in the development cycle. The architect will collaborate closely with CPU architects, RTL designers, software and compiler teams, and system architects to understand workload characteristics and translate performance insights into tangible architectural enhancements. This is a remote position based in North America, and the company welcomes candidates at various experience levels.

$100k - $500k

Metriport is revolutionizing US healthcare by solving the critical problem of medical data exchange. We build the technology infrastructure that connects, transforms, and provides insights from raw healthcare data, making it usable for care teams and their agents to improve patient outcomes. Our platform enables record retrieval in seconds, a process that previously took weeks, empowering clinicians with complete patient information at their fingertips. We are a technology company operating in healthcare, building the system of record for US healthcare. Having secured significant funding and achieved product-market fit with a multi-million dollar ARR and over 100 customers, we are poised for substantial growth.

$180k - $220k

We are seeking an AI Engineer to join our team and contribute to features that empower developers to understand, evaluate, and enhance the performance of their agents. This is a hands-on engineering role where you will bridge the gap between experimentation, benchmarking, and product code, applying insights gained from agent evaluation to shape our framework. Our work focuses on building agentic features into Mastra, including trace intelligence and agent learning capabilities for automatic self-improvement, as well as running Mastra primitives on industry-standard benchmarks to fine-tune configurations.

Salary not listed

Parloa

As a Founder's Associate Intern, you will tackle strategic challenges that lack defined ownership and drive them to tangible results quickly. You will collaborate directly with our Chief of Staff and the CEO Office team, taking on cross-functional projects where the business needs the most support. This role is designed for individuals who excel in ambiguous environments, thrive on high visibility, and operate with a strong sense of ownership.

Salary not listed

The Developer Experience team at Moveworks builds platforms that empower developers working on the Moveworks Agentic AI platform. This role is central to owning the technical foundation for the team's output, focusing on designing and building complex platform challenges related to generality, scalability, and extensibility, all while prioritizing the developer experience. The ideal candidate thinks in systems, ships impactful solutions, and effectively collaborates with and influences others.

$191k - $334k

Usul

Usul is a Silicon Valley AI lab dedicated to rebuilding the infrastructure that equips the Western world, enabling faster technology procurement for the US and its allies. We are seeking a full stack engineer to work on both our government-facing data and workflows platform, and our commercial platform that assists defense companies and startups in winning government contracts. This role involves building intuitive user interfaces and contributing to mission-critical national security solutions.

$160k - $240k

AgentMail

AgentMail is building the communication infrastructure for AI agents, enabling them to communicate and operate independently across various services. We've processed hundreds of millions of emails and serve developers building ambitious agentic products. We are seeking a Founding Product Engineer to define the customer experience of AgentMail. This role involves owning products from initial customer problems to daily developer use, encompassing end-to-end development across frontend, APIs, backend services, data models, and infrastructure. You will engage directly with customers, translate their challenges into product solutions, and shape the developer experience. The role requires rapid prototyping, meticulous attention to detail in product design and interaction, and contributing to the product engineering culture.

$175k - $250k

Usul

Usul is a Silicon Valley AI lab dedicated to rebuilding the infrastructure that equips the Western world, enabling faster technology procurement for governments and commercial clients. As a Forward Deployed Engineer, you will work directly with operators and government clients to develop and implement AI-driven data and workflows for technology acquisition. You will also contribute to our commercial platform, assisting major defense companies and startups in securing government contracts.

$160k - $240k