AI Agent Engineer Jobs at Startups

Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to transform customer service and business growth. We are primarily an in-person company based in San Francisco, with a culture guided by values of Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing family. Our Tech, Media & Telecom team builds AI agents for critical moments, such as service disruptions or major product launches, to enhance customer relationships across telecommunications, media, and technology sectors. These agents aim to personalize experiences, optimize plans, drive engagement, and improve customer loyalty.

$180k - $390k

Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to transform customer service and business growth. We are primarily an in-person company based in San Francisco, with a culture guided by values of Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing family. Our co-founders, Bret Taylor and Clay Bavor, bring extensive experience from leading tech companies like Salesforce, Facebook, and Google. The Travel, Transportation and Hospitality (TTH) team specifically supports major players in the travel industry, helping them deliver exceptional customer experiences, drive growth, and build innovative products. This is a small, scrappy, and collaborative team where every member is encouraged to think like a product owner and contribute to shaping the future of AI in travel.

$180k - $390k

Together AI

Together AI runs one of the largest GPU fleets globally, and the Infra Agent Systems team is responsible for developing the software that powers and automates this infrastructure. The team builds production AI agents designed to diagnose hardware failures, investigate incidents, correlate signals across the fleet, and automate operational workflows. Alongside these agents, they are building the core platform, which includes knowledge graphs, retrieval systems, orchestration frameworks, and developer tooling. This role offers the unique opportunity to work at the intersection of AI agents, distributed systems, infrastructure, and automation, tackling complex engineering challenges with significant real-world impact.

$250k - $300k

Sierra

Sierra is seeking a Software Engineer to join its Financial Services team, focusing on building customer-facing AI agents for major brands. This role involves designing, delivering, and iterating on production-grade AI agents that are mission-critical and drive revenue. You will own the Agent Development Life Cycle (ADLC) from pilot to deployment, working directly with enterprise clients and startups to solve complex business challenges. Your work will directly influence the evolution of Sierra's core platform, shaping the future of AI agent development. The team partners closely with financial institutions to transform customer experiences, making the industry more accessible, human, and affordable.

$180k - $390k

Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to revolutionize customer service and business growth. We are an in-person company based in San Francisco with a culture guided by trust, customer obsession, craftsmanship, intensity, and a commitment to work-life balance. Our co-founders, Bret Taylor and Clay Bavor, bring extensive experience from leading tech companies like Salesforce, Facebook, and Google. The Retail Team specifically focuses on reinventing AI-first commerce for renowned brands such as Gap, Wayfair, and Sonos, handling millions of customer interactions annually across various channels. We aim to create seamless experiences that resolve issues, drive revenue, and build lasting customer loyalty.

Salary not listed

Sierra

Sierra is seeking a Software Engineer to join its Public Sector team, focusing on designing and building production-grade AI agents for government institutions. This role involves close collaboration with industry leadership to shape market strategy and product development, as well as working directly with public sector customers to understand their needs and identify opportunities for AI to improve citizen services and government operations. The position offers a unique opportunity to influence the evolution of Sierra's core platform by surfacing unmet needs and prototyping new features, contributing to the future of AI agent development within the public sector.

$180k - $390k

Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to transform customer service and business growth. We are primarily an in-person company based in San Francisco, with a culture guided by values of Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing family. Our Financial Services team works with systemically important banks, neobanks, and insurers, impacting millions of end customers and billions in economic activity. We build modern tools that address critical customer moments, making the financial industry more accessible, human, and affordable.

$180k - $390k

Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to transform customer service and business growth. We are an in-person company based in San Francisco with a culture guided by values of Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing family. Our co-founders have extensive experience from leading tech companies like Salesforce, Facebook, and Google. The Healthcare team is focused on transforming the patient experience across the healthcare system, making care more accessible, human, and affordable through AI agents that handle sensitive conversations with empathy and compliance.

$180k - $390k

Together AI

The Infra Agent Systems team builds the software systems that power and automate Together AI's large GPU fleet. This role involves developing production AI agents that diagnose hardware failures, investigate incidents, correlate signals, and automate operational workflows. You will also build the platform these agents run on, including knowledge graphs, retrieval systems, orchestration frameworks, and developer tooling. This is an opportunity to work at the intersection of AI agents, distributed systems, infrastructure, and automation, solving challenging engineering problems with real production impact. You will be responsible for delivering software and operating it in production.

Salary not listed

Observe.AI is seeking a client-facing AI Agent Engineer to design, integrate, and deploy enterprise-grade Voice and Chat AI agents and AI Copilots. This is a hands-on, delivery-focused role where you will work directly with customers to translate requirements into working solutions by configuring integrations, designing prompts and workflows, and deploying scalable AI agents. You will own the end-to-end lifecycle of AI agent delivery, from initial design and integration through testing, client demos, deployment, and ongoing iteration. This role is ideal for someone who enjoys problem-solving across systems, working with APIs, and delivering real-world AI applications, rather than building foundational AI models.

Salary not listed

Firecrawl is seeking a highly motivated and product-focused engineer to enhance how AI agents discover, understand, and utilize Firecrawl's capabilities. This role emphasizes rapid iteration, rigorous A/B testing, and translating learnings into product improvements for a non-human user base. It requires a blend of scientific rigor in product development, including hypothesis formation, experimentation, and data analysis, rather than pure research or data science. Prior experience with AI agents is beneficial, but strong engineering skills, a fast shipping cadence, and a quick learning ability are paramount. Firecrawl provides the easiest way to convert web content into data usable by AI agents, solving a critical problem for LLM development. The company has experienced significant growth, backed by substantial funding, and is building foundational AI infrastructure.

$235k - $260k

telli

This internship is ideal for individuals early in their careers, such as recent graduates, seeking in-depth exposure to startup operations. You will work directly with customers and contribute to scaling AI products in a real-world environment. As a Success Architect Intern, you will collaborate closely with the founders on both onboarding/agent development and customer success initiatives, helping our team ensure customers achieve success with telli. Your responsibilities will include onboarding new customers, developing AI agents, supporting existing accounts, and building processes to facilitate company growth.

Salary not listed

telli

telli is building the future of customer conversations with AI voice agents. We are a fast-growing, AI-focused company that helps leading B2C companies deploy and improve consumer-facing AI voice agents at scale. As an intern in the Founders' Office, you will work directly with the founding team, gaining hands-on experience in finance, legal, operations, and special projects. This role offers a unique opportunity to see how an early-stage AI company operates and contribute to its rapid growth.

Salary not listed

Abridge

Abridge is seeking an engineering leader to establish and grow its New York engineering presence. This role is a builder's role first, focusing on owning business-critical product areas end-to-end, setting technical direction, and making architectural decisions. The leader will be responsible for scoping and shipping product in an evolving area, growing a team from a small core, and representing Abridge engineering in New York. The position requires hands-on technical involvement to unblock the team and contribute to technical design discussions, alongside a strong point of view on AI and agentic engineering. The ideal candidate will have a track record of building products from inception to scale, driving execution velocity, and fostering a high-quality engineering culture.

$290k - $350k

Prime Intellect

Prime Intellect is building the open superintelligence stack, a full-stack system for post-training AI models at frontier scale. They are developing open-source models for long-horizon tasks and the platform their research team uses to build them. This role involves building Prime Agent, an open-source coding and research agent, and will span product development and underlying agent systems. You will own features end-to-end, from design through deployment and monitoring, shipping at the pace of an early-stage company tackling a critical problem in AI.

$150k - $300k

11x

11x is a company that helps Go-To-Market (GTM) teams accelerate growth by automating monotonous tasks like research, list-building, follow-ups, and data entry. Backed by significant funding and trusted by leading companies, 11x is looking for ambitious individuals to shape the future of how companies accelerate growth. As a Voice Agent Engineer, you will be instrumental in connecting our GTM AI agents with real-world customer outcomes, playing a key role in the evolution of AI in sales.

$180k - $200k

11x

11x is revolutionizing Go-To-Market (GTM) strategies by automating monotonous tasks like research, list-building, follow-ups, and data entry, allowing sales teams to focus on building relationships and closing deals. Backed by significant funding and trusted by leading companies, 11x is seeking ambitious individuals to shape the future of GTM acceleration. As a Voice Agent Engineer, you will be instrumental in connecting our GTM AI agents with tangible customer results, playing a key role in the evolution of AI in sales.

$180k - $220k

11x

11x is revolutionizing go-to-market (GTM) strategies by automating monotonous tasks like research, list-building, follow-ups, and data entry, allowing teams to focus on building relationships and closing deals. Backed by significant funding and trusted by leading companies, 11x is seeking ambitious individuals to shape the future of GTM acceleration. As a Voice Agent Engineer, you will be instrumental in connecting our GTM AI agents with tangible customer results, playing a key role in the AI-driven transformation of sales.

CA$150k - CA$180k

11x

11x is seeking a product-minded fullstack engineer to build the core experiences that power their AI agents. This role involves working across the entire stack, from user-facing product features to the systems that orchestrate and deploy autonomous agents. The engineer will collaborate closely with Product, Design, and AI/Engineering teams to enhance user experience and usability, particularly for non-technical users. The position is remote but requires working close to Pacific Time hours for effective collaboration.

$180k - $250k

The Conversation Engine team is seeking a Staff Software Engineer to scale and optimize a cutting-edge Generative AI product that provides instant assistance to enterprise users. This role offers a unique opportunity to work at the core of Moveworks' Generative AI product, focusing on its scalability and optimization for the enterprise solution space. You will be encouraged to bring innovative ideas to solve complex problems, collaborating closely with machine learning experts and cross-functional teams. The challenge involves scaling the conversation engine to support hundreds of millions of users across multiple chat channels and use cases, while enhancing the end-to-end product infrastructure with high engineering quality and robustness.

$176k - $308k

11x

11x is a company that helps go-to-market teams accelerate growth by automating monotonous tasks such as research, list-building, follow-ups, and data entry. We are backed by significant funding and trusted by leading teams. We are seeking ambitious individuals to shape the future of how companies accelerate growth. This role involves building the core experiences that power our AI agents, working across the full stack from user-facing product features to the systems that orchestrate and deploy autonomous agents. You will collaborate closely with Product, Design, and AI/Engineering teams.

$180k - $250k

11x

11x is building a platform to automate the busywork of Go-To-Market (GTM) teams, allowing them to focus on building relationships and closing deals. Backed by significant funding and trusted by leading companies, 11x is seeking ambitious individuals to shape the future of company growth acceleration. This role involves building the core experiences that power AI agents, working across the full stack from user interfaces to agent orchestration and deployment systems, in close partnership with Product, Design, and AI/Engineering teams.

Salary not listed

Parallel Wireless is seeking an AI Engineering Team Manager to lead its AI team and drive its technical direction, roadmap, and execution. This role involves leading AI/ML initiatives from concept to production, defining success metrics, and ensuring AI solutions deliver measurable impact. The manager will also lead architecture and technical decisions for AI models, platforms, tools, and data, while building and growing a strong, multidisciplinary team through recruitment, mentoring, and career development. Establishing robust engineering practices for evaluation, scalability, reliability, monitoring, and model lifecycle management is key, as is close collaboration with Product Management, Systems Engineering, and R&D teams across different geographies. The role also includes partnering with domain experts to identify AI opportunities for network improvement and supporting customer-facing discussions and trials.

Salary not listed

Campfire

Campfire is seeking an AI Engineer to build production AI agents that assist customers with accounting tasks. This hands-on role involves shaping agent architecture, shipping customer-facing features, and establishing reliable engineering practices. You will collaborate closely with engineering, product, and design teams to transform complex problems into trustworthy software solutions. The ideal candidate will combine strong software engineering fundamentals with practical experience in developing and operating agentic applications, from automating financial workflows to enabling customers to understand and act on their financial data.

$180k - $300k