Find your next AI Engineering role

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. We are seeking a Software Engineer, Agent to design and deliver production-grade AI agents that are central to Sierra's growth and revenue. These are not prototypes but scalable systems running in production across various industries. You will own the Agent Development Life Cycle (ADLC) from pilot to deployment and iteration, establishing best practices. This role involves partnering directly with leaders at large enterprises and cutting-edge startups to understand their challenges and build AI agents that transform their operations. Your customer interactions will also shape the evolution of Sierra's core platform, influencing new tools, features, and the future of AI agent development.

As a Software Engineer on the Agent Quality team, you will build the measurement, evaluation, and feedback-loop infrastructure that makes the core agent reliably better over time. This role sits at the intersection of product, data, and engineering. You will instrument what matters, help define how quality is judged, build pipelines and tooling to analyze agent behavior at scale, and partner closely with research, product, and infrastructure teams to turn insights into improvements. Your impact will compound across every product built on the shared harness and across high-stakes decisions around model choice, quality, and cost.

Replit

Replit is seeking a Senior Product Engineer for its Product Foundry team. This team is responsible for driving industry disruption and achieving 10x scale by launching high-risk, full-stack initiatives that create new product categories. The Product Foundry acts as Replit's internal innovation engine, aiming to transform Replit into the foundational operating system for the next generation of software, where AI Agents are the primary actors. The role involves building for creators and enterprises, equipping them with tools to build anything, anywhere, and operates within a high-agency founding team model with autonomous squads focused on rapid iteration and market validation.

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. We are seeking a Product Manager for Ghostwriter, an agent-building agent that transforms software development by allowing users to describe desired outcomes, which Ghostwriter then uses to create and deploy AI agents across various channels. As the PM for Ghostwriter, you will define the future of human-software interaction in the agent era, owning the end-to-end product experience from prompt to agent outcome and contributing to Sierra's growth.

Decagon is seeking a Business Value Consultant to establish and expand its value engineering capabilities. This role will collaborate closely with the Sales team on significant enterprise opportunities, acting as a key liaison between Product, Sales, and Finance. The primary responsibility is to articulate the business value of Decagon's platform in quantifiable terms, developing data-driven business cases for executive stakeholders to accelerate sales cycles, improve win rates, and secure larger investments. Additionally, this position will define and implement a scalable value-based selling approach, creating repeatable frameworks, tools, and narratives for the sales organization.

Speak is seeking an Engineering Manager to lead the Platform & Infrastructure team. This role is pivotal during a transformative period in software development, focusing on agentic shifts. The team's mission is to empower all engineering teams at Speak by providing robust, self-serve infrastructure, sensible guardrails, and expert guidance. This ensures rapid, high-quality feature delivery while maintaining a state-of-the-art customer experience, impacting everything from application performance and reliability to developer productivity and security. The Engineering Manager will be a key driver in evolving towards agentic engineering, enabling autonomous, high-quality work through the systems and environments the team builds.

Replit

Replit is seeking a Mobile Software Engineer to shape the end-to-end user experience for building and publishing native mobile applications. You will build innovative new features and interactions, enabling anyone with a phone to create software for their phones and assist with our mobile UI/UX. The role involves working with a modern tech stack including Typescript, React, React Native, Expo, Apollo/GraphQL, Swift, and Kotlin.

Decagon is seeking a Security Engineer to help build and scale the security foundations of its customer experience platform. This role involves implementing security controls, building security tooling, and strengthening defenses against modern threats. You will work with the head of Security to maintain an enterprise-ready security and compliance posture, combining hands-on security engineering with software development. The position involves building automated remediation tools, working on detection pipelines, and partnering with engineering teams to enhance platform security. You will collaborate with a skilled and enthusiastic team in a fast-paced environment.

$200k - $330k

We are seeking experienced Backend and Applied AI Engineers to develop the core systems powering Within's multimodal agents for enterprise environments. This role is at the intersection of distributed systems and applied AI, focusing on designing and shipping backend services that handle real-world data ingestion, orchestrate AI model and agent workflows, ensure enterprise-grade security, and deliver reliable outcomes at scale. You will collaborate closely with product and design teams to transform ambitious AI capabilities into production-grade features for Fortune 500 enterprises. A strong emphasis is placed on engineering fundamentals such as correctness, observability, security, and performance, balanced with rapid iteration speed. You will also play a key role in setting technical direction for critical subsystems and mentoring junior engineers.

Within is seeking an AI Front-end Engineer who excels at the intersection of product design and front-end engineering. As an engineer first with exceptional design sensibility, you will define and implement the "look and feel" of AI-native workflows, ensuring our complex enterprise tools are as intuitive as consumer apps. We value your portfolio and track record of shipping over formal degrees.

Replit

Replit is seeking a Premium Support Engineer to be the primary point of contact for their highest-value customers, providing expert and timely technical support. This role involves handling complex product issues, guiding customers through critical incidents, and ensuring a high standard of quality and speed in all interactions. The engineer will play a key part in evolving support strategies, adapting to new products and customer expectations, and leveraging AI-assisted workflows. The position requires a blend of deep technical troubleshooting and clear, confident communication to keep users productive.

Harvey

Harvey is transforming legal and professional services by combining agentic AI, an enterprise-grade platform, and deep domain expertise. This role offers a unique opportunity to build a generational company at an inflection point, scaling rapidly and defining a new category. The team operates with intensity, ownership, and a commitment to the mission, valuing decisiveness, simplicity, and continuous improvement. If you are driven to do the best work of your career alongside like-minded individuals, Harvey is the place to be.

$193k - $290k

Decagon is seeking a dynamic and wide-ranging Revenue Strategy & Operations Manager to join their team. This role will be instrumental in shaping the company's go-to-market strategy and driving its execution. You will own a broad platform, lead strategic, GTM-wide initiatives, and serve as a trusted day-to-day partner to senior business leaders. The position involves managing GTM forecasts and KPIs, optimizing business performance and efficiency, establishing new processes, and executing high-leverage operations with field teams. This is a high-impact, high-agency position with the opportunity to significantly influence the trajectory of a category-defining AI company.

Hebbia is seeking an AI Strategist to drive the strategic deployment and measurable value creation of its AI platform across top global financial institutions. This role is pivotal in shaping how AI transforms the enterprise, moving beyond a typical post-sales function. You will act as a bridge between product, commercial strategy, and customer impact, understanding user workflows and embedding Hebbia's solutions to maximize ROI. The ideal candidate possesses curiosity, critical thinking, commercial acumen, and executive polish, thriving in fast-paced, unstructured environments where complex problems are solved and meaningful partnerships are built. This position is based in our New York City office and requires a 5-day per week in-office presence.

$90k - $160k

Hebbia is seeking an AI Strategist to join their Forward Deployed Banker team. This role is pivotal in driving the strategic deployment and measurable value creation of Hebbia's AI platform across top global financial institutions. You will be responsible for shaping how AI transforms the enterprise, acting as a bridge between product, commercial strategy, and customer impact. The ideal candidate will possess curiosity, critical thinking, commercial acumen, and executive polish, with the ability to move seamlessly between strategic conversations and hands-on execution in a fast-paced environment. If you are passionate about solving complex problems, building strong partnerships, and defining the future of AI in finance, this is an exciting opportunity.

$90k - $160k

Decagon is seeking an Agent Strategy Manager to join their high-impact team. This role involves partnering closely with customers to guide AI agent deployments, support adoption, and ensure they achieve meaningful outcomes. You will work cross-functionally with Product and Engineering teams to surface customer needs, solve challenges, and help shape the technology's performance in real-world environments. This position blends relationship management with hands-on execution, ideal for someone who thrives in a fast-paced, high-growth setting and wants to make a direct impact.

$160k - $220k

Decagon is seeking an Agent Strategy Manager to join their high-impact team. This role involves partnering closely with customers to guide AI agent deployments, support adoption, and ensure they achieve meaningful outcomes. You will work cross-functionally with Product and Engineering teams to surface customer needs, solve challenges, and help shape the performance of Decagon's conversational AI platform in real-world environments. This position blends relationship management with hands-on execution, ideal for someone who thrives in a fast-paced, high-growth setting and wants to make a direct impact.

$160k - $220k

Applied Intuition is seeking an Embedded AI Engineer to build on-device intelligence for a next-generation Android Automotive platform. This role is responsible for the entire lifecycle of embedded ML systems, ensuring models perform predictably and safely within production environments, adhering to real-world constraints like latency, thermal limits, and functional safety. The company is a leader in powering the future of physical AI, serving industries such as automotive, defense, and construction with solutions for tools, infrastructure, operating systems, and autonomy.

$60k - $300k

Perplexity is seeking a Search Machine Learning Engineer Intern to contribute to the development of next-generation search technologies, specifically focusing on retrieval and ranking. This internship offers a hands-on opportunity to collaborate with experienced engineers, enhance search quality, experiment with novel models, and implement features that directly influence user search and information discovery experiences. The program is designed for a 12-24 week full-time engagement, conducted in person at our London office.

$12k - $24k

Mistral AI

Mistral AI is seeking a Research Engineer focused on Data Infrastructure to architect and build the backbone of our frontier model training and fine-tuning ecosystem. This role involves designing and scaling massive compute fleets and storage systems for high performance and scalability, with a vision towards exabyte-scale architecture. You will contribute to a strategic transition from legacy scheduling to modern orchestration, implementing sophisticated multi-cluster orchestration and cloud-bursting capabilities. The position requires full lifecycle ownership, from architecting migrations away from legacy orchestrators to implementing production-grade pipelines and participating in on-call rotations for critical training jobs.

Synthesia is seeking a Principal Engineer to join their ML Platform team. This role focuses on building and operating the systems that enable researchers and product teams to train, serve, and deploy generative models efficiently and reliably. The team's work encompasses research infrastructure, production serving systems, internal tooling, and platform interfaces, with a growing emphasis on automation and agent-oriented workflows. This is a hands-on individual contributor position with significant ownership, where you will influence the evolution of the ML platform as it scales.

OpenAI

This is a founding role for a Technical Deployment Lead (TDL) based in Tokyo. The TDL will define how OpenAI delivers complex systems to customers, owning their build, shipment, and adoption. This role involves translating business outcomes into technical plans, managing day-to-day execution across engineering teams, and partnering with customers to ensure delivery meets their goals. While not a management role, it requires end-to-end delivery ownership, including embedding with customers to map workflows, ensure timely component delivery, and lead readiness and change management for adoption. The TDL will track progress, manage dependencies, make sequencing decisions, and drive prototypes from inception to scale, while also sharing field insights with Product and Research to influence the roadmap. Success is measured by the impact of deployments in delivering measurable value, driving adoption, and becoming critical to customer workflows, alongside delivery reliability and operating leverage.

$25k - $50k

Inworld is seeking a Staff/Principal Machine Learning Engineer to join their research lab focused on building top-ranked real-time voice models. These models power large consumer-facing AI applications across various sectors. The role involves optimizing real-time inference, developing best-in-class APIs and products, and contributing to the research and development of state-of-the-art models. The ideal candidate is a fast learner who thrives in ambiguity and can demonstrate a strong portfolio of built, broken, and understood systems. This position emphasizes impact, shipping stable code, and a deep understanding of the underlying logic behind engineering decisions.

Inworld is seeking a Staff/Principal Machine Learning Engineer to join their research lab focused on building top-ranked real-time voice models. These models power large consumer-facing AI applications across various sectors, reaching hundreds of millions of end-users. The role involves optimizing real-time inference, developing state-of-the-art models, and creating best-in-class APIs and products. The ideal candidate thrives in ambiguity, learns quickly, and can demonstrate a strong track record of building, breaking, and understanding complex systems. This position emphasizes impact, shipping stable and reliable systems, and a deep understanding of the underlying logic behind engineering decisions.

£140k - £200k

Inworld is a research lab building top-ranked real-time voice models used in large consumer-facing AI applications. We are seeking a Senior/Lead Machine Learning Engineer to optimize real-time inference and create best-in-class APIs and products. This role involves tackling complex, ambiguous problems and driving impact through shipped, stable systems. We value engineers who are comfortable with ambiguity, have a bias for action, and obsess over performance, latency, and reliability as core product features.

Inworld is seeking a Senior / Lead Machine Learning Engineer to join our team in Germany. We are a research lab building top-ranked real-time voice models used in large-scale AI applications across various sectors. Our work involves research, development, optimizing real-time inference, and creating best-in-class APIs and products. We are looking for fast learners with a strong ability to build, break, and understand systems, who thrive in ambiguity and can demonstrate their past work. This role emphasizes full-cycle ownership, taking models from research to production-ready serving.

Inworld is seeking a Staff/Principal Machine Learning Engineer to join their team in Mountain View, USA. This role focuses on optimizing real-time inference for state-of-the-art AI models, which power large consumer-facing applications. The ideal candidate will have a strong background in systems programming and a proven ability to take models from research to production, ensuring reliability and performance. The company values engineers who can navigate ambiguity, drive impact, and deeply understand the underlying logic of their work, fostering a collaborative and fast-paced environment.

$270k - $500k

Applied Intuition is seeking a hands-on Technical Lead to take ownership of identity and access management (IAM) across the organization. This senior individual contributor role involves defining the long-term IAM strategy, assessing and maturing the Identity Provider (IDP) architecture, and driving all identity systems towards Zero Trust principles. You will be responsible for automating identity lifecycle processes, implementing Role-Based Access Control (RBAC), defining least-privilege policies, centralizing secrets management, and designing Privileged Access Management (PAM) solutions. The role also includes implementing scalable access management for AI agents and bots, enforcing Single Sign-On (SSO), and owning the implementation and governance of authentication protocols and modern identity standards. You will collaborate with various teams to deliver access management capabilities that support business needs and satisfy audit requirements, translating complex identity requirements into actionable technical plans.

$60k - $300k

Cursor is redefining how developers write code, and as a Software Engineer on the Core Services team, you will own the critical shared services that sit between our product surfaces and the infrastructure layer. This includes auth, webhooks, and the backend systems powering agent workflows. Your work will be foundational, ensuring these systems are reliable, well-abstracted, and scalable for future growth. You will build the systems that every product team depends on, making AI-powered development possible at scale.

Fal

We are seeking a Security Engineer, Infrastructure to safeguard the core systems powering fal.ai's platform, including GPU compute, multi-cloud environments, networking, and data pipelines. This role involves hands-on, systems-oriented work across the full stack, from cloud and Kubernetes to identity, networking, and secrets. You will be responsible for designing and implementing scalable security controls at the intersection of security, infrastructure, and distributed systems, ensuring the integrity and safety of our high-performance AI platform.

Crusoe is seeking a Senior Systems Engineer to play a key role in executing the company's Enterprise AI Strategy. This role involves designing and building agentic AI systems to move the organization from simple information retrieval to orchestrated, multi-system automation. You will operate at the intersection of AI, enterprise systems, and integration platforms, building scalable agent workflows, enabling a citizen developer ecosystem, and establishing the technical foundations for an AI-powered operating model.

$190k - $230k

Within is seeking an AI Front-end Engineer to join their fast-growing Series B company. This role offers a unique opportunity to learn at the intersection of product design and frontend engineering, focusing on building AI-native workflows that simplify complex enterprise tools. You will work directly with senior engineers and designers, contributing to features used by Fortune 500 customers and learning best practices for scalable front-end systems. The company emphasizes rapid growth, rewarding agency, and a deep care for customers, the team, and their mission to transform industries through AI agents.

We are seeking Backend + Applied AI Engineers to construct the core systems that power Within's multimodal agents in real enterprise environments. This is a hands-on role at the intersection of distributed systems and applied AI, where you will design and ship backend services for ingesting real-world data, orchestrating model/agent workflows, enforcing enterprise-grade security, and delivering reliable outcomes at scale. You will collaborate closely with product, design, and other engineers to transform ambitious AI capabilities into production-grade features for Fortune 500 enterprises. We prioritize strong engineering fundamentals, including correctness, observability, security, and performance, alongside rapid iteration speed, recognizing that success in this field depends on delivering quality products and features with incredible velocity.

Perplexity is seeking an IT Systems Administrator to join our San Francisco office. This is a high-impact role focused on building and automating the technology infrastructure that supports our fast-growing company. You will leverage Perplexity's AI tools to create automations, custom skills, and IT workflows that reduce repetitive tasks and improve efficiency. The goal is to move beyond simply responding to tickets and instead proactively eliminate them through intelligent systems and automation.

Harvey

Harvey is seeking a People Business Partner to support its Product and Design teams, with the potential to expand to other technical organizations. This role is crucial for partnering with Product and Design leaders to build and scale high-performing teams, navigate organizational growth, and adapt to rapidly shifting priorities. The ideal candidate will possess strong judgment, the ability to quickly build credibility with technical leaders, and comfort operating in a fast-paced, ambiguous environment. Reporting to the Head of People Business Partners, this position collaborates with leaders across technical organizations and the broader People team.

$165k - $248k

Baseten is seeking a Product Manager to define and build the product function for its inference platform, which powers mission-critical AI inference for leading AI companies. This role offers a unique opportunity to shape the future of AI infrastructure, working directly with founders and top engineers. You will own the product surface responsible for making AI model inference fast, reliable, and economical at scale, including autoscaling, traffic routing, failover, and workload scaling across clusters and regions. The ideal candidate is deeply technical, customer-obsessed, and enjoys tackling foundational infrastructure challenges to make AI systems scalable and reliable.

thinkingmachines

Thinking Machines Lab is seeking a Software Engineer focused on security to ensure their AI products are secure by default while enabling rapid product iteration. This role involves embedding with product and research teams to integrate security into the design and development process, as well as building tools and automation to maintain system safety at scale. The company is dedicated to advancing collaborative general intelligence and empowering users with AI tools tailored to their needs.

$350k - $475k

thinkingmachines

Thinking Machines Lab is seeking generalist infrastructure and systems engineers to build the core systems powering their foundation models and support internal research and product development teams. This high-impact role involves architecting and scaling critical infrastructure across the full technical stack, solving complex distributed systems problems, and building robust, scalable platforms. You will work directly with researchers to accelerate experiments, improve infrastructure efficiency, and enable key insights across models, products, and data assets.

$350k - $475k

Perplexity is looking for a skilled Offensive Security Engineer to join its security team. This role involves taking an adversarial approach to protect Perplexity's infrastructure, applications, and AI systems. You will be responsible for planning and executing red team operations, penetration tests, and attack simulations across various environments, including cloud infrastructure, web and mobile applications, and the AI/ML pipeline. The goal is to identify vulnerabilities before malicious actors do and collaborate with engineering teams to ensure effective remediation.

Decagon is seeking a Senior Software Engineer to join the Agent Product Engineering team. This team deploys mission-critical AI agents to customers, impacting millions of users and driving company growth. You will build on our industry-leading AI agent platform, collaborate directly with customers, and devise long-term, scalable solutions to deliver magical support experiences. In this role, you will have complete ownership and autonomy in building and shipping best-in-class AI agents, from initial implementation through continuous iteration. You'll work directly with leaders across industries like finance, healthcare, and hospitality, solving their users' needs with reliable and intuitive AI agents. Engineers here own their work end-to-end and are trusted to make a real impact. This role is for someone who dives deep into complex system challenges and builds elegant solutions that scale to millions of users.

$200k - $400k