AI Agent Systems Engineer — Build Reliable Harnesses
OpenAI
OpenAI is seeking an AI Systems Engineer for Codex Core Agents to design and build the core agent harness and execution loop. You will enable Codex agents to interpret model outputs, use tools, execute code, and complete long-horizon tasks safely in real environments. You will work across Rust systems code and Python configuration layers, focusing on reliability, safety, and performance. This role involves collaboration with research, infrastructure, and product to push frontier agent #J-18808-Ljbffr OpenAI
- AI Systems Engineer - Codex Core Agents About The Team The Codex Core Agents team builds the agent harness that turns model capability into real‑world action. We own the systems around... ..., orchestration, evals, production reliability, and the performance envelope around...Suggested
- Perplexity is seeking an Applied AI Engineer to design, build, and iterate on cutting-edge agents powering our core Perplexity Computer experience. You will own the full model lifecycle, from research to production, and collaborate with engineers, PMs, data scientists,...Suggested
- About the team The Agent Enablement Applied AI Engineering team works across engineering... ...partners design, build, validate, launch,... .../OIDC and identity systems, product judgment,... ..., permissions, reliability, safety, and... ...implementations and test harnesses, and create the...SuggestedWork at officeRelocation package
$193.4k - $290k
...combining frontier agentic AI, an enterprise-grade... ...is a rare chance to help build a generational company at... ...Role Overview As a Software Engineer, Agents, you'll build the systems that make our AI agents indispensable... ...generation by tuning the harness and libraries for coding...Suggested$143.2k - $243.4k
...all started when engineer Fred Luddy wrote code... ...inspired Fred to build a company that... ...ServiceNow is the AI control tower for... ...on performance and reliability. Collaborate with... ..., and distributed systems with a Bachelor's... ...production — multi‑agent orchestration, tool...SuggestedWork experience placementWork at officeImmediate startRemote workFlexible hours$50.24 - $55.82 per hour
...memory for datacenter and AI workloads. In this internship you will help build an AI-powered research... ...platform — a multi-agent system that turns large... ...centric AI Agentic Systems Engineer Intern to help design,... ...— with an emphasis on reliability, traceability, and output...Full timeInternshipLocal areaImmediate start- ...At Sierra, we’re building a platform to enable... ...experiences with AI. We partner with industry... ...portfolio of AI agents. Working closely... ..., you’ll combine systems thinking, design... ...Partner with product, engineering, and deployment... ...and can ship reliably while quality stays...Full timeFlexible hours
- About the Team The Agent Post-Training... ...be able to do, build the training... ...capabilities, reliability, and product fit... ...across research, engineering, data, evals,... ...composed into systems: using tools reliably... ...agent harness, such as multi-... ...OpenAI OpenAI is an AI research and deployment...
- About the Team The Agent Post-Training... ...be able to do, build the training signal... ...capabilities, reliability, and product fit... ...across research, engineering, data, evals,... ...production agent harness, such as multi‑agent systems or training directly... ...OpenAI is an AI research and deployment...
- ...the new era of agentic AI. Millions of people... ...and every action an agent takes is metered, budgeted... ...product innovation, building the foundations that... ...transform them into reliable, production grade... ...frontier AI research, agent systems, platform engineering, and product...
$166.5k - $291.4k
It all started when engineer Fred Luddy wrote code that... ...moment inspired Fred to build a company that could do... ..., ServiceNow is the AI control tower for business... ...customer enterprise systems including ServiceNow, Workday... ...to apply them to build reliable, scalable solutions...Work at officeImmediate startRemote workFlexible hoursDay shift- ...’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and... ...committed researchers, engineers, policy experts, and... ...leaders working together to build beneficial AI systems.... ...building and scaling the harnesses researchers use to design...Work at officeVisa sponsorshipFlexible hours
$250k
Mechanical Engineer - Battery Systems for AI Data Centers Dragon Q Energy | Posted Mar 14 Apply Full-time... ...a fast-growing, seed stage startup building next‑generation battery and super... ..., extreme thermal density, and reliability requirements of modern AI clusters....Full timeContract workInternship- Hightouch seeks a Senior GTM Systems Engineer to build the systems behind the go-to-market organization. You’ll own projects from design through implementation... ...to dramatically improve operations. This role emphasizes AI-driven transformations within the GTM stack, with a focus on...
- SF Bay Area, California | Fully On-site We are seeking an Multimodal Intelligence Systems Engineer to join an early-stage technology company building AI systems for real-world industrial environments. This role focuses on multimodal visual intelligence running in hardware...Work at officeVisa sponsorship
- ...California is seeking a hardware/embedded engineer to help develop next-generation NAND Flash products for AI infrastructure. You will contribute to memory system design for HBF-based devices and... ...teams to push performance and reliability. The role emphasizes hands-on...
- Perplexity is building the future of AI-powered search and agent experiences through our Sonar models, Deep Research Agent, Comet Agent, and Search products... ...-of-the-art capabilities. We value researchers and engineers with strong Python/PyTorch skills, deep learning expertise...
- Perplexity is hiring a backend engineer for the Multimodal team to design and... .... You will own end-to-end backend systems, including per-session workers, routing... ...and multimodal capabilities, build scalable services, and ensure reliability in production environments. #J-18...
- ...The Superintelligence Cloud, is a leader in AI cloud infrastructure serving tens of... ...superintelligence. One person, one GPU. If you'd like to build the world's best AI cloud, join us. *Note... ...world’s most advanced GPU and Networking systems. Document and update data center layout...Local areaFlexible hoursShift workDay shift
- Recall.ai is hiring for a software engineer to build core product APIs and real-time video processing pipelines in our downtown SF office. You’ll own major features, work with founders, and engage directly with customers to understand their needs. This is an in-person role...Work at office
- ...the Team The Safety Systems team is dedicated to... ...safety, robustness, and reliability of AI models and their... ...in the real world. Building on the many years of... ...Role As an Analytics Engineer in Safety Systems, you... ...enable both people and AI agents across the organization...Work at officeRelocation package
$170k - $220k
...innovative platform as a hands‑on Director of Systems Engineering. You are a technical leader with... ...custom application development and building the systems engineering function at Pleno... ...to ensure performance, scalability, reliability, and regulatory compliance, making pragmatic...Full timeTemporary workWork at officeRelocationFlexible hours$38 per hour
## Systems EngineerApplylocations: DCG CA - La Canadatime type: Full... ...and service-oriented Systems Engineer to join our team. This role... ...existing IT environments, ensuring reliability and performance.*... ...meaningful relationships that we build along the way.Join an elite team...Work at officeLocal areaRemote workWork from homeFlexible hours- ...collaborative, solutions-oriented engineer with strong experience in rail transit systems and a passion for improving... ...key role in advancing the safety, reliability, and performance of the Light Rail... ..., work across disciplines, and build productive relationships with operations...For contractorsLocal area
$174.5k - $240k
...ours. About this role GTM Engineering builds and operates the intelligent systems, integrations, and... ...revenue org. We're the AI and technical backbone of... ...GTM — accountable for the reliability, adoption, and continuous... ...design, build, and ship the agents, integrations, and...Work experience placementWork at officeLocal areaRemote workMonday to FridayFlexible hours3 days per week- ...evolve Ramp’s Quote-to-Cash systems Build Salesforce CPQ, contract, and... ...Design and operate reliable integrations between Salesforce... ...Desk, Legal, Finance, Billing Engineering, Product, and GTM teams Requirements... ...skills Experience using AI-assisted development tools...Contract workWork experience placement
$158.77k - $326.87k
...Possible. At Pinterest, AI isn't just a feature, it... ...Are you passionate about building and scaling enterprise finance systems that power global... ...functional teams to deliver reliable, scalable, and business-... ...in Information Systems, Engineering, Business Systems, Computer...Work at officeLocal areaRelocationRelocation package$198k - $248k
...2009, Waymo has focused on building the Waymo Driver—The World's... ...across 15+ U.S. states. Hardware Engineering is a diverse, innovative,... ...of electrical, mechanical, reliability, software and vehicle engineers... ...and you will report to a Systems Engineering Manager You will...Full timeRemote work- ...Cloud Memory Business Unit invites an AI-focused intern to design, build, and productize an internal agentic AI platform. You will develop multi-agent workflows, implement LLM-driven... ...collaborating with senior memory and systems #J-18808-Ljbffr Micron Technology, IncInternship
- Action Property Management is seeking a Building Engineer to maintain and repair all common areas of the Association. You will report to the General Manager and ensure optimal performance of building systems, coordinating with contractors and handling after-hours emergencies...For contractors
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