AI Agent Engineer Jobs at Startups

Handshake is seeking a Member of Technical Staff to define how frontier coding agents are benchmarked and improved. This is a high-ownership role for researchers who build, partnering with top AI researchers and software engineers to develop new benchmarks, reward and verifier systems, agent-evaluation methodologies, and data-quality techniques focused on AI for Coding. You will tackle core questions in frontier AI progress, including what to measure, how to design effective evaluations, create high-signal feedback, and build actionable data systems. As an early member, you will have significant influence over the team's technical direction, operating culture, and the open-source software, benchmarks, and research products developed.

$200k - $350k

LangChain is building the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents. With significant funding and a rapidly growing platform that includes open-source tools and a commercial offering, team members have a meaningful impact on shaping the future of AI technology. The Deployed Engineering team works directly with companies building and running AI agents in production, partnering closely with customer engineers across the full lifecycle to achieve technical wins and ensure reliable operation at scale using the LangChain suite. This role sits at the intersection of engineering, product, and go-to-market, feeding real-world insights back into the platform.

$185k - $300k

LangChain is seeking a Deployed Engineer to join their team in NYC. This role focuses on building and running AI agents in production, moving beyond prototypes to create reliable systems that real teams depend on. You will work directly with customer engineering teams, co-architecting and co-building AI agents, and owning the technical win in pre-sales by designing POCs and guiding evaluations. The position involves helping customers deploy and operate agent-based applications, advising on architecture and best practices, and running technical demos and trainings. This is a hands-on, highly technical role at the intersection of engineering, product, and go-to-market, with a fast feedback loop and visible impact on how AI agents are built in the real world.

$185k - $315k

EnCharge AI is building the next generation AI platform, focusing on a novel in-memory-computing architecture for improved AI inference efficiency and performance. As AI demands evolve, we believe the underlying infrastructure must also advance. We are an experienced team of AI researchers, silicon & systems engineers, and architects, backed by leading investors, aiming to be the essential platform for the next wave of AI innovation. This role involves owning the "harness" layer that enables agents to interact with files, tools, documents, and memory, managing permissions and unattended execution. This layer will be built using a combination of open-source and bespoke code, requiring you to keep pace with rapidly changing models and ensure reliable tool use across different model qualities.

Salary not listed

Parloa

Join Parloa in reimagining customer experience with Agentic AI. As a Staff Software Engineer, you will play a critical role in shaping Parloa’s engineering strategy and architecture while staying close to the code. This role is about building resilient, enterprise-grade systems that can scale globally and helping to set the benchmark for engineering excellence in Europe and beyond. You will be responsible for delivering business value by writing code daily, defining and driving technical strategy across multiple teams, and leading team architecture to ensure solutions scale globally for enterprise adoption. The role requires balancing short-term velocity with long-term resilience, making smart trade-offs on complexity, cost, and scalability, while remaining hands-on in writing foundational code, leading design reviews, or refactoring key systems. You will serve as a trusted advisor to leadership, ensuring engineering capacity matches market and customer demands, and setting cultural standards for fearless iteration, bias for action, and pragmatic perfectionism.

Salary not listed

We are seeking an AI Agent & LLM Engineer to join our team and contribute to the AI systems powering Otter’s conversational knowledge engine and AI Chat. This role involves building and enhancing user-facing agent experiences, evaluation systems, and the underlying platform for reliable, large-scale operation. You will translate ambiguous product challenges into production-ready solutions, define quality metrics, and drive improvements across services, models, and user experience.

$155k - $185k

Figure is an AI robotics company developing autonomous general-purpose humanoid robots with the goal of shipping robots with human-level intelligence for home and commercial markets. You will be working within a small but impactful XR team, contributing to critical projects that involve debugging XR applications and running hardware experiments on robots. This role is ideal for someone who thrives on variety and can move quickly without a predefined playbook.

$200k - $400k

Prodigal is seeking a Forward Deployed Engineer to join their AI Agents team. The company provides a connected AI platform for financial institutions, enabling them to make millions of high-stakes decisions daily regarding customer outreach, offers, and case management. Prodigal's AI agents are already in production, analyzing conversations, guiding human agents, and orchestrating outreach. This role involves expanding these AI agents into new areas like originations, document processing, and back-office workflows. The ideal candidate will work on real production AI systems, have end-to-end ownership, and contribute to a fast-paced, intellectually stimulating environment.

Salary not listed

This role focuses on partnering directly with companies to build and operate AI agents in production, transforming prototypes into reliable systems. It's a hands-on, technical position that involves working closely with customer engineers throughout the entire lifecycle, from pre-sales evaluations to post-deployment support. The core objective is to achieve technical success by co-designing agent architectures and ensuring customers can reliably operate these agents at scale using the LangChain suite. This position sits at the intersection of engineering, product, and go-to-market, influencing LangChain's adoption and providing valuable real-world insights back to the platform.

$185k - $315k

Attuned Intelligence

Attuned Intelligence is seeking a hands-on AI Solutions Engineer to build and enhance AI agents for their healthcare customers. This role involves translating customer requirements into functional agent capabilities, including designing prompts, conversation flows, and tool integrations to improve patient access and reduce administrative burdens. You will collaborate with platform engineers to prototype new features, test end-to-end experiences, and transform recurring customer needs into reusable solutions for the Attuned platform. The ultimate goal is to ensure customers have reliable agents that demonstrably improve their operations.

Salary not listed

Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major brands to transform customer service and business growth. We are an in-person company based in San Francisco with a global presence. Our culture is built on values of Trust, Customer Obsession, Craftsmanship, Intensity, and balancing Family. The co-founders, Bret Taylor and Clay Bavor, bring extensive experience from leading tech companies like Salesforce, Facebook, and Google, with Bret currently serving as Board Chair of OpenAI.

$180k - $390k

This role focuses on working directly with customers to build and deploy production AI agents, tackling complex problems in applied AI. You will help customers adopt innovative agentic engineering practices and ensure they ship reliable agents into production quickly. The feedback loop is fast, the impact is visible, and your work directly shapes how AI agents are built in the real world. This is a hands-on, highly technical role that partners closely with customer engineers across the full lifecycle, from pre-sales evaluations to post-deployment advisory work, focusing on achieving technical wins and co-designing agent architectures.

$160k - $185k

Perplexity AI

Perplexity is seeking an experienced Machine Learning Engineer to advance how AI systems search, reason, and work together to solve complex problems. Our work spans search and retrieval, LLM post-training, multi-agent training, and the harnesses that make these systems effective. We control the full stack, giving us the freedom to develop new approaches across models, agent harnesses, and search infrastructure to use search more effectively, design tools and execution environments around learned behavior, and improve retrieval to support how agents actually work.

Salary not listed

Rescale

Rescale is seeking a product-focused Software Engineer, AI Systems to join their infrastructure organization. This role will focus on building and enhancing Rescale's Data Intelligence and Agentic AI platforms. The work involves developing production agents, retrieval systems, evaluation frameworks, and data ingestion pipelines that connect customer environments, cloud storage, and compute clusters. You will collaborate closely with Product Management to define customer problems, refine specifications, and prioritize deliverables, taking ownership of the technical design and execution of key platform components. A significant aspect of the role involves actively using Rescale's product to identify areas for improvement and iterating on launched features.

$115k - $159k

HeyGen is seeking an Applied AI Engineer to join the Video Agent team. This role focuses on enhancing the capabilities of an AI agent that transforms prompts, documents, or assets into finished videos. You will be responsible for improving the agent's ability to understand user requests, redesigning tools it utilizes, building evaluation frameworks, and shipping new features across the full stack. This position offers a unique opportunity to work directly with in-house trained models and researchers, owning features from conception to launch and making critical decisions about where to apply AI versus deterministic code.

$180k - $240k

ClaimSorted is transforming the insurance industry by building a more resilient world where individuals and businesses can confidently pursue opportunities. We empower the world's largest insurers and Fortune 500 companies to handle claims and manage risk more efficiently, enabling them and those they protect to move forward with confidence. Having experienced 10x growth in the past year, backed by prominent investors, we are seeking a Product Engineer // AI to develop automations that will revolutionize claims handling, making it fast, reliable, and scalable for the insurance industry.

£80k - £150k

Gigi is seeking an AI Agent Engineer to join their engineering team in Toronto. This role focuses on the end-to-end development of AI agents and workflows for Gigi, an AI media manager for Amazon DSP. While fundamentally a software engineering role involving API design, data modeling, service integration, testing, and debugging, the core focus will be on how Large Language Models (LLMs) reason, utilize tools, maintain context, and take actions for customers, and the software that ensures these actions are reliable. The ideal candidate is a strong software engineer who has begun building with LLMs and agents and is eager to expand their expertise, rather than an AI researcher or someone with extensive LLM experience. As an early employee, you will significantly influence the product, engineering culture, and company direction.

$110k - $200k

Moveworks is seeking an Agentic AI Harness Architect to define the technical vision for our agentic AI harness. This role involves planning, selecting tools, managing context, and implementing memory, critique, reflection, adaptation, and recovery mechanisms for AI agents. You will invent and prototype algorithms to enable agents to complete complex tasks with minimal supervision and high reliability. The position requires designing model-agnostic abstractions to integrate foundation models, specialized agents, enterprise tools, and workflows, while developing approaches for agent memory and learning that prioritize enterprise security and privacy. You will also create rigorous benchmarks and evaluation methods for agent performance and explore advanced methods like iterative planning, self-critique, and multi-agent coordination. The role includes building prototypes, identifying promising ideas, and collaborating with platform and product teams to bring them to production, while remaining hands-on with code and experiments.

$201k - $352k

Harvey is transforming legal and professional services by integrating advanced agentic AI with an enterprise-grade platform. This role is a founding position on the Security Engineering team, focused on building the foundational security for AI agents. You will lead the development of a platform that enables agents to perform security work, including vulnerability discovery and validation through authorized penetration testing, while ensuring data and system protection. The work involves shaping how agents are sandboxed across product and internal platforms, building execution environments, orchestration, and controls, and enabling the secure internal use of open-source models.

$231k - $346k

Parloa

As a Staff Product Engineer at Parloa, you will work directly within our most strategic enterprise customers to build the software that powers their AI agents in production. You will be responsible for extending Parloa's platform, AMP, by developing custom integrations and capabilities that meet specific customer needs, especially in complex scenarios where off-the-shelf solutions are insufficient. This role involves both long-term engagements, where you'll deepen integrations and grow use cases within an account, and short-term experiments to test new ideas. You will act as the technical lead, owning the architecture and build, and ensuring production quality, security, and adherence to data handling standards. You will also mentor other engineers, contribute to hiring, and set the standard for AI-assisted work validation.

Salary not listed

Limrun is seeking an engineer to build and scale its platform, which runs development tools and applications as cloud services that AI agents can use. The role involves deciding on product direction, owning projects from design to maintenance, and participating in an on-call rotation to investigate and resolve production incidents. This is an opportunity to work directly with the founder, shape the engineering team's practices, and explore the application of AI in solving infrastructure challenges.

Salary not listed

Mirage is seeking an ML Engineer to push the boundaries of large language models for multimodal creative tasks. You'll develop new approaches for building and extending agentic systems that understand and operate over complex, real-world data, particularly video. This role focuses on advancing agent capabilities, improving reasoning and control, and enabling new forms of interaction between language models and time-based media.

$175k - $300k

Haven Safety AI is building an enterprise learning intelligence layer for safety, helping high-risk organizations learn faster from incidents to prevent future occurrences. The platform integrates with existing EHS systems to enhance how incidents are investigated, assessed, and learned from. It combines incident evidence, company knowledge, historical cases, and an industry knowledge graph, with specialized AI agents analyzing various factors to produce traceable assessments. This role focuses on the AI and LLM engineering layer, connecting the evidence base and knowledge graph to the product experiences used by investigators and safety leaders. It's a build-and-operate role requiring technical expertise and operational responsibility in a safety-critical, multi-tenant enterprise environment.

Salary not listed

Tenstorrent is seeking a RISC-V AI / HPC & Agentic Software Engineering Lead to work at the hardware-software boundary, enabling AI, HPC, and agentic AI software stacks on Tenstorrent’s RISC-V processors. This role involves integrating and optimizing Tenstorrent’s LLK (Low-Level Kernel) infrastructure for CPU execution and leading the bring-up of a RISC-V-native agentic AI software stack. You will collaborate closely with CPU architects, microarchitecture teams, compiler engineers, and AI kernel developers to ensure tight alignment between software capabilities and RISC-V architectural features. This is a remote position based out of North America.

$100k - $500k