Jobs in the United States

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Manufacturing Test Engineer
Actalent
Bellevue, WA
- $90 to $110 USD / hour
Job Title: Manufacturing Test Engineer Motors and ActuatorsJob DescriptionThis role focuses on designing, developing, and executing manufacturing test programs for electric motors,…
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Mechanical Engineer
Actalent
GILBERT, AZ
- $41 to $65 USD / hour
Job Title: Mechanical EngineerJob DescriptionThis Mechanical Engineer role focuses on the design and development of ground control shelters and enclosures used as communications and…
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Senior Electrical Engineer
ASML US, LP. (US30)
Wilton, CT
Minimum of 4 years of relevant work experience required
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Upgrade Install and Relocation Engineer - DUV
ASML US, LLC. (US01)
N Phoenix, AZ
Valid driver's license required
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Senior Electrical Engineer
ASML US, LP. (US30)
Wilton, CT
- $131,000 to $190,000 USD / year
Minimum of 4 years of relevant work experience required
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Senior Static Timing Engineer
Google
Sunnyvale, CA
Be part of a team that pushes boundaries, developing custom silicon solutions that power the future of Google's direct-to-consumer products. You'll contribute to the innovation behind…
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Power Performance Modeling Engineer - Platform Architecture
Apple
Beaverton, OR · Cupertino, CA
…this highly visible role as a Constrained Performance Modeling Engineer, you will play the central role of driving the development of these simulators and collaborate with the…
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Power Performance Modeling Architect - Platform Architecture
Apple
Beaverton, OR · Cupertino, CA
…this highly visible role as a Constrained Performance Modeling Engineer, you will play the central role of driving the development of these simulators and collaborate with the…
Added 1 min ago
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Engineer I (Temporary)
Westin Cleveland
Cleveland, OH
- $26.6 USD / hour
…laundry equipment, boilers, pool equipment, HVAC, hand and power tools and general plumbing systems and fixtures such as pipelines, toilets and sinks, kitchen and laundry…
Added 1 min ago
Mechanical Engineer 1 (NSSS Piping & Integration Pipe Stress)
NuScale Power, LLC
Corvallis, OR
…Boiler and Pressure Vessel Code, Section III and the ASME B31.1 Power Piping Code with direction provided by senior…
Added 2 mins ago
Deployment Engineer (Field Operations)
Base Power Company
Austin, TX
Base is America’s next-generation power company. We’re rebuilding the foundation of modern civilization–electricity–by deploying a vast network of distributed batteries that is transforming…
Added 4 mins ago
Technical Leader - Steam Turbine Operability Engineer
GE Gas Turbines (Greenville) L.L.C.
Remote, United States
This role is focused on Steam Turbine Operability within combined cycle power plant applications and will be a member of the ST Operability team of ST Systems Engineering.
Added 6 mins ago
Senior Electrical Hardware Design Engineer
Space Kinetic
El Segundo, CA
As a Senior Electrical Hardware Design Engineer you will own the design, development, integration, and testing of circuit cards and related electronics hardware for spacecraft and other…
Added 6 mins ago
Aviation Maintenance Engineer
Anduril Industries
Costa Mesa, CA
As an Aviation Maintenance Engineer you will ensure the airworthiness and mission readiness of developmental UAS platforms across assembly, maintenance, and flight test operations. You will…
Added 7 mins ago
Site Reliability Engineer - OCI (Feb 2027 Start Date)
Oracle
Nashville, TN
To be considered for a SRE position in OCI, you must possess the Objective Minimum Qualifications (OMQs) below
Added 8 mins ago
Principal Product Engineer
SiTime Corporation
United States
…their products with higher performance, smaller size, lower power, and better reliability. With more than 4 billion devices shipped, SiTime is changing the timing industry. For more…
Added 9 mins ago
Building Engineer (Downtown)
Stream Realty
Houston, TX
Must have a thorough understanding of HVAC, electrical, plumbing, and building automation systems · OSHA 10-Hour General Industry Certification required within 90 days of employment
Added 11 mins ago
Data Analytics Engineer
ASM Research
United States
The Data Analytics Engineer is responsible for designing, developing, and supporting enterprise reporting and analytics solutions that enable data-driven decision-making across the…
Added 11 mins ago
Associate Design Engineer
Alpharetta, GA
All positions at Caterpillar are in office 5 days per week
Added 11 mins ago
Solution Consulting Manager - NA ENT
Qualtrics
Remote, United States
Added 12 mins ago
RF Engineer
Skyeton Inc
North Las Vegas, NV
The RF Engineer designs, integrates, tests, and supports radio-frequency systems for Skyeton unmanned aircraft systems (UAS), including airborne and ground-based communications, command and…
Added 13 mins ago
AI Agent Evaluation Engineer
Cresta
Remote, United States
…United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every…
Added 14 mins ago
Manager, Electrical / I&C Design - Perry Nuclear Power Plant
Vistra Nuclear Operations Company
Perry, OH
Bachelor's (4-year) Engineering degree from an accredited institution; Professional Engineer (PE) registration preferred.
Added 15 mins ago
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Sustainability Process Engineer (F/M/X)
Solvay
USA - Green River, WY, WY
- $106,000 to $118,000 USD / year
As a Sustainability Process Engineer, you will work to design, develop, document, and implement processes and tools that enable effective execution of all site GHG (Green House Gas)…
Added 17 mins ago
Full Stack Engineer 4 (Manager IC) - Operational Risk
Capital One
McLean, VA · Richmond, VA
…technology. Our products, enhanced with the transformative power of AI, are central to our business and deliver tremendous customer…

Cresta

AI Agent Evaluation Engineer

Remote, United States

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Job details

Posting language: English
Posted: Nov 12, 2026

Original job description

Cresta unlocks the true potential of the customer experience, turning every conversation into a competitive advantage. Cresta’s unified AI platform combines conversational AI agents, real-time human agent augmentation, and comprehensive conversation intelligence to drive revenue and efficiency gains across every channel. The world’s leading companies, including United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every day.

Born from the Stanford AI Lab, Cresta has raised more than $270 million from the world’s leading investors, including a16z, Greylock, and Sequoia. Cresta’s leadership includes some of the leading minds in AI today. Our CEO, Ping Wu, founded and led Google's Contact Center AI and Vertex AI platforms before joining Cresta to build the future of AI-driven customer experiences.

Over the next few years, AI is going to redefine how people all over the world interact with businesses every day. Come build that future at Cresta.

About the role:

Cresta’s AI Receptionist answers the phone for small businesses that would otherwise miss the call. It handles millions of conversations a month today, making sure no call goes unanswered and helping owners complete the front-office tasks that keep their business running, and it does so across hundreds of customers. Whether those conversations are actually good is the single most important question in the business, and it deserves a full-time owner. That’s you.

As our first AI Agent Evaluation Engineer, you define what quality means for every agent we run, you build the systems that measure it across every conversation, and you are the person the company trusts when the question is “how good is it, really?”

The work combines hands-on conversation analysis, rigorous evaluation design, and engineering execution: reading and annotating real conversations to learn how the agent actually fails, building the automated evaluation systems (LLM-based judges, golden sets, regression suites) that measure those failures at scale, and keeping those systems honest by calibrating them against human judgment. Fixing what you find is welcome but not the core of the job; an accurate, prioritized picture of agent quality is.

What You'll Do :

Evaluation Design & Quality Definition

Define and maintain the evaluation rubric for the agent across three axes: adherence (did it follow its design, call the right tools, respect guardrails), outcome (did the conversation achieve its goal), and conversation experience (latency, turn-taking, tone, repetition).
Write the annotation guidelines and failure taxonomy the team uses to talk about failures precisely; run calibration sessions and measure inter-rater agreement.
Classify and prioritize failure modes by severity and frequency so engineering and product work on what matters most.

Conversation Analysis & Annotation

Review production conversations by hand every week, leverage QA partners; open-code failures, cluster them, and turn the clusters into the evaluations worth automating.
Trace each failure to its likely cause (prompt, knowledge gap, tool or flow bug, speech recognition) and route it to the right owner with enough evidence to act on.
Evaluate across languages and report quality by segment (language, accent, audio quality, intent), not just in aggregate.

Scalable Evaluation Systems

Build and operate the evaluation pipeline that scores every production conversation, combining automated checks, LLM-based judges, and human review.
Calibrate every automated judge against human labels before trusting it; treat judge error as the primary measurement risk.
Design sampling strategies (stratified by intent, language, caller type, audio conditions) so that reported changes in quality are real.
Build and maintain the golden set and regression suite that every prompt, model, knowledge, and flow change is validated against before release.

Coverage & Edge Cases

Maintain the failure-mode coverage map: which behaviors are tested, partially tested, or unmeasured; close the gaps.
Design evaluations for behaviors no standard harness covers: high-stakes conversation types such as handoffs to a human, misuse and unwanted-caller handling, and resilience under upstream failures.
Define the quality and latency thresholds the agent is held to.

Reporting & Cross-Functional Collaboration

Report quality trends to internal stakeholders and customers clearly, with uncertainty stated and without burying bad news.
Partner with forward-deployed engineers, backend engineers, product managers, and the voice/language engineering team to turn findings into prioritized recommendations.
Document methodology so results are reproducible and the evaluation practice outlives any one person.

What We're Looking For:

3+ years of professional experience in software engineering, applied ML, or data-intensive research roles, including at least 1–2 years working hands-on with LLM-based systems in production.
Bachelor’s or Master’s degree in Computer Science, Computational Linguistics, Cognitive Science, Statistics, or a related field, or equivalent practical experience.
Built and operated an end-to-end evaluation system for a production LLM product (agent or otherwise): rubric, human labels, automated judge, regression suite.
Deep understanding of evaluation methodology: what golden sets, judges, regression suites, and calibration are for, and when each fails. Tool-agnostic; you will work in our in-house tooling.
Fluent in how LLM agents work: prompts, tool calls, context handling, multi-turn state. You can read a trace and tell what the agent was doing and why.
Strong programming skills in Python and experience with LLM APIs; able to build and ship evaluation tooling independently. Fine-tuning and ML frameworks are not required.
Able to write a rubric that independent reviewers would score the same way, and to measure whether they do.
Able to design a test from an open-ended quality question: you decide what to measure and how, rather than executing a predefined plan.
Willing to do non-scalable work weekly, both yourself and by directing our QA partners: listening to calls, labeling conversations, building a failure taxonomy from scratch.
Professional fluency in at least one language other than English, sufficient to evaluate multilingual agent behavior directly.
Strong written communication; you author the guidelines others follow.

Note on Our Hiring Process

We highly value your time and engineering craftsmanship. To ensure a streamlined and objective process, the first step for qualified applicants following an initial resume review is a self-paced CoderPad technical assessment. This allows you to showcase your practical coding and problem-solving skills in a real-world environment before moving into conversational interview rounds.

Perks & Benefits:

We offer a comprehensive and people-first benefits package to support you at work and in life:

Comprehensive medical, dental, and vision coverage with plans to fit you and your family
Flexible PTO to take the time you need, when you need it
Paid parental leave for all new parents welcoming a new child
Retirement savings plan to help you plan for the future
Remote work setup budget to help you create a productive home office
Monthly wellness and communication stipend to keep you connected and balanced
In-office meal program and commuter benefits provided for onsite employees

Compensation at Cresta:

Cresta’s approach to compensation is simple: recognize impact, reward excellence, and invest in our people. We offer competitive, location-based pay that reflects the market and what each individual brings to the table.

The posted base salary range represents what we expect to pay for this role in a given location. Final offers are shaped by factors like experience, skills, education, and geography. In addition to base pay, total compensation includes equity and a comprehensive benefits package for you and your family.

Our use of AI in recruiting: We may use AI tools in our recruiting process, which require human review and oversight. If you have questions about our use of AI or wish to opt out, please contact recruiting@cresta.ai (if you are opting out, please use the subject ‘Opt-Out’ in your email).

Recording & AI transcription: We do not authorize candidates to record or use AI transcription of any interview by phone, notetaker app, AI glasses, or other device. Candidates may request an exception or accommodation for review during the interview process as needed.

Recruiting impersonation scams: We have noticed a rise in recruiting impersonations across the industry, where scammers attempt to access candidates' personal and financial information through fake interviews and offers. All Cresta recruiting email communications will always come from the @cresta.ai domain. Any outreach claiming to be from Cresta via other sources should be ignored.

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Jobs in the United States