OpenAI Jobs

OpenAI

OpenAI is seeking a Cybersecurity Applied AI Engineer to partner with customers and help them apply OpenAI models, APIs, Codex, and agentic workflows to real cybersecurity use cases. This customer-facing technical role requires the ability to move fluidly between executive strategy, practitioner-level cyber depth, and hands-on solution design. You will work with CISOs, security executives, application security leaders, SOC teams, security engineering teams, and hands-on practitioners to identify where AI can create measurable security outcomes and help customers evaluate and deploy workflows such as secure code review, vulnerability triage, threat modeling, remediation, SOC and incident response workflows, detection engineering, cloud security, GRC automation, and security validation. You will collaborate closely with Sales, Solutions Engineering, Product, Engineering, Research, and Security to turn customer needs into safe deployment patterns, reusable field assets, and product feedback.

OpenAI

We are seeking an experienced Site Reliability Engineer to focus on security infrastructure. This role involves designing, building, and operating reliable, secure, and scalable infrastructure for identity, access, endpoint, and shared platform services across the company. You will be a senior technical owner, responsible for the end-to-end lifecycle of infrastructure and identity systems, from architecture and implementation to policy enforcement, upgrades, recovery, and ongoing operations. The goal is to build durable, production-grade platforms that reduce operational friction, enforce security by default, and empower teams to move forward with confidence. This is a hands-on role for a senior engineer who excels in ambiguous environments, enjoys end-to-end system ownership, and elevates reliability and security by replacing fragile systems with standardized, repeatable infrastructure.

OpenAI

As a Machine Learning Engineer in OpenAI's Integrity team, you will work with state-of-the-art models and classifiers, experiment with new architectures, and advance our capabilities in content and user understanding. This role offers the chance to transform research breakthroughs into tangible solutions that enhance platform trust and safety, particularly for those excited about training LLMs and building ML models. You will be instrumental in designing and deploying advanced machine learning models to solve real-world problems, bringing AI-driven applications from concept to implementation. Collaboration with researchers, software engineers, and product managers is key to delivering AI-powered solutions for complex business challenges. You will also optimize and scale data pipelines, ensure models are production-ready, and contribute to projects requiring cutting-edge technology. Staying ahead of the curve in machine learning and AI developments, participating in code reviews, and leading by example are essential aspects of this role, as is monitoring and maintaining deployed models to ensure continued value delivery.

OpenAI

OpenAI's Forward Deployed Engineering team partners with customers to turn research breakthroughs into production systems, operating at the intersection of customer delivery and core platform development. Forward Deployed Engineers (FDEs) lead complex end-to-end deployments of frontier models in production alongside our most strategic customers. You will own discovery, technical scoping, system design, build, and production rollout, partnering directly with customer engineering and domain teams. Success will be measured through production adoption, measurable workflow impact, and eval-driven feedback that influences product and model roadmaps. You'll collaborate closely with Product, Research, Partnerships, GRC, Security, and GTM teams.

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. As a Forward Deployed Infrastructure Engineer, you will be a founding member of this function, owning the end-to-end lifecycle of customer deployments. You will help define how Sierra's AI platform is deployed and operated across enterprise environments, working directly with customers to architect, deploy, upgrade, and manage the AI platform infrastructure. Your role will be crucial in ensuring deployments meet security, compliance, and operational requirements, while also establishing the standards, tooling, and processes for scalable and repeatable deployments. You will partner cross-functionally with Engineering, Product, Sales, and Customer Success to scale complex customer engagements.

Sierra is building a platform to enable companies worldwide to create better, more human customer experiences with AI. We partner with industry leaders and are primarily an in-person company based in San Francisco, with growing international offices. Our co-founders have extensive experience from leading tech companies like Salesforce, Facebook, and Google. We are looking for a Software Engineer, Agent to design and deliver production-grade AI agents that are central to Sierra's growth, driving revenue directly. These are not prototypes but powerful, scalable systems running in production across various industries.

OpenAI

As an AI Architect, you will be the senior technical owner for a named portfolio of customers and the primary technical counterpart to their leadership teams. You will act as the “CTO of your book of business”, shaping each customer's AI strategy and guiding their journey from pre-sales discovery and solution evaluation through deployment, adoption, and measurable business impact. You will own the technical account plan across ChatGPT Enterprise, the OpenAI API, Codex, and other agentic AI solutions. In partnership with the Account Director, you will translate business priorities into a focused use-case portfolio, an actionable adoption roadmap, and a clear path to durable customer value and growth. You will remain accountable for the technical outcome while bringing in the right specialists across deployment, implementation, enablement, security, product, and partners to provide deeper expertise and execute work where needed.

Sierra is building a platform to enable companies worldwide to create better, more human customer experiences with AI. We partner with industry leaders and are primarily an in-person company based in San Francisco, with growing international offices. Our co-founders have extensive experience from leading tech companies like Salesforce, Facebook, and Google, with one co-founder currently serving as Board Chair of OpenAI. We are guided by core values of Trust, Customer Obsession, Craftsmanship, Intensity, and Family, which shape our culture and actions.

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. This role is dedicated to one of Sierra's largest and most strategic customers, focusing on AI agents operating at massive scale across millions of customer interactions. You will serve as the product owner embedded within a dedicated team, responsible for the overall quality and evolution of production AI agents across chat and other channels. This position requires a blend of product sense, technical depth, and a keen eye for user experience, driving quality, and pushing platform capabilities forward.

LiteLLM is seeking a Rust Engineer to lead the critical migration of its AI Gateway from Python to Rust. This high-visibility role involves owning the entire migration process, from planning with the CTO and restructuring the codebase to executing a stability-first, gradual rollout. The primary focus is on significantly improving performance, aiming to make LiteLLM the lowest-latency, highest-throughput AI gateway in the market without compromising reliability for enterprise customers. This is a single-owner mandate where your decisions will directly shape the platform's future performance and efficiency.

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, mission-critical, and drive revenue. You will own the Agent Development Life Cycle (ADLC) from pilot through deployment and iteration, building, tuning, and evolving AI agents in production environments. This role involves partnering directly with leaders at large enterprises and cutting-edge startups to understand their business challenges and build AI agents that transform their operations at scale. Your work will also influence the evolution of Sierra's core platform, surfacing unmet needs and prototyping new tools and features.

OpenAI

We’re hiring a Full Stack Software Engineer to help invent the next generation of AI-powered software development workflows. This role involves owning complete product experiences, spanning user interfaces, workflow orchestration, agent and prompt design, backend systems, and cloud infrastructure. It's a highly product-oriented position where you'll work directly on workflows developers use daily, identifying bottlenecks and rethinking how software gets built in a world where AI agents are active participants. The features you ship will influence how developers around the world write, review, test, and maintain software.

Fireworks is seeking an AI Field Engineer for Strategic Partnerships to be a technical owner for their most strategic partnerships. This role involves working closely with partner field teams, ISVs, and SIs to establish Fireworks as the primary inference and fine-tuning layer within partner AI architectures. You will bridge engineering, partner development, and customer delivery by building reference architectures, conducting benchmarks, resolving integration issues, and co-developing Proofs of Concept (POCs). The position requires strong technical skills, the ability to manage executive-level discussions on strategy and business outcomes, and a proactive approach to building and enabling solutions. You will also be responsible for leading discovery conversations, aligning stakeholders, and translating field feedback into product improvements to accelerate the development cycle.

$200k - $260k

OpenAI

The Codex Web Layer team is responsible for the web-based systems and user experiences for Codex, spanning the entire stack from the application framework to the in-app browser. In this role, you will design and implement infrastructure and features end-to-end for the Codex desktop client application, helping to define the future of hybrid agentic/interactive web browsing. This position offers a unique opportunity to work on a critical and rapidly growing product within a small, experienced team, contributing to a platform that integrates from the OS level to user interaction design.

Scale AI

Scale AI is seeking a Frontier Agents Engineer to act as a technical bridge between our AI capabilities and strategic customers. This hands-on role involves understanding customer challenges, architecting custom AI solutions, and ensuring successful deployment of AI systems in production. You will work directly with customer engineering teams to integrate AI into their critical workflows, combining deep engineering expertise with customer-facing problem-solving.

Scale AI

Scale AI is seeking a Senior Frontier Agents Engineer to join their Enterprise team. This role serves as a technical liaison, connecting Scale AI's advanced AI capabilities with key enterprise clients. You will collaborate with customers to understand their specific needs, design tailored AI solutions, and ensure the successful implementation and adoption of AI systems in production environments. This is a hands-on position requiring a blend of deep engineering expertise and customer-focused problem-solving, involving direct work with client engineering teams to integrate AI into their core operations.

Scale AI

Scale AI is seeking a Staff Frontier Agents Engineer to act as a technical bridge between Scale AI's AI capabilities and strategic customers. This role involves understanding customer challenges, architecting custom AI solutions, and ensuring successful deployment in production environments. It's a hands-on technical position combining deep engineering expertise with customer-facing problem-solving, requiring direct collaboration with customer engineering teams to integrate AI into critical workflows.

Scale AI

As a Senior Staff Frontier Agents Engineer on our Enterprise team, you'll be the technical bridge between Scale AI's cutting-edge AI capabilities and our most strategic customers. This is a hands-on technical role that combines deep engineering expertise with customer-facing problem solving. You'll work directly with customer engineering teams to integrate AI into their critical workflows, understanding their unique challenges, architecting custom AI solutions, and ensuring successful deployment and adoption of AI systems in production environments.

Scale AI

Scale AI is seeking a Senior/Staff Machine Learning Engineer for its General Agents team. This role is crucial in designing, building, and deploying production-ready AI agents to address high-impact enterprise challenges. You will be involved in the entire agent lifecycle, from conceptualization and system design to evaluation, deployment, and ongoing iteration. The position requires bridging cutting-edge agentic techniques with the practical demands of real-world customer environments, focusing on creating scalable, reliable, and generalizable agent systems.

$265k - $331k

Reflection ai

Reflection is a research lab dedicated to making intelligence open and accessible for everyone. We build open-weight AI systems that serve as a foundational intelligence layer for researchers, developers, and enterprises. This role is crucial for building and owning Reflection's presence within the key communities of researchers and developers, who are our earliest adopters and a core distribution channel for frontier AI. We are seeking an individual with a deep understanding of these communities, a clear vision for engagement, and the ability to authentically represent Reflection as a passionate participant in the AI ecosystem.