1,098 Results for

Machine Learning Engineer Jobs in Sunnyvale, CA

Jobs

Foster City, CA10 days ago

$169,100–$270,800 Per Year

As an AI Engineer in AI Governance engineering team, you will have the unique chance to make a direct and meaningful impact by building and delivering solutions that power AI Governance engineering solutions. Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.

New!

San Francisco, CA4 days ago

$82,000–$145,000 Per Year

SynergisticIT works especially well for candidates such as: recent grads in CS/Engineering/Math/Stats , jobseekers who were laid off and need an updated stack, career switchers who want a guided plan, candidates with career gaps , people with “learning but not hired” bootcamp history, experienced professionals not landing interviews, and international candidates on F1/OPT needing a clear employment pathway. SynergisticIT works especially well for candidates such as: recent grads in CS/Engineering/Math/Stats , jobseekers who were laid off and need an updated stack, career switchers who want a guided plan, candidates with career gaps , people with “learning but not hired” bootcamp history, experienced professionals not landing interviews, and international candidates on F1/OPT needing a clear employment pathway.

New!

Sunnyvale, CA5 days ago

$95,000–$200,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We are seeking an experienced Manufacturing Test Development Engineer to design, develop, and deploy manufacturing test solutions for complex, high‑performance hardware systems, from PCB and PCBA through full system‑level test.

Foster City, CA10 days ago

$192,200–$307,700 Per Year

Experienced with high-performance imperative languages including Python, Java, Golang, React.js, Next.js • Built predictive models using Python and ML libraries and managed their lifecycle, from development to production. Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.

Foster City, CA10 days ago

$169,100–$270,800 Per Year

You will work on innovative solutions that combine deep technical expertise with AI/ML capabilities to enhance developer productivity, improve customer experiences, and drive next-generation commercial payment and money movement technology for B2B, B2C, P2P, and G2C flows. Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.

Foster City, CA10 days ago

Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid. Masters, MBA, JD, MD) or 2 years of work experience with a PhD Preferred Qualifications • 9 or more years of relevant work experience with a Bachelor Degree or 7 or more relevant years of experience with an Advanced Degree (e.g.

Foster City, CA10 days ago

$146,200–$233,700 Per Year

Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid. Masters, MBA, JD, MD) or 0 years of work experience with a PhD Preferred Qualifications • 6 or more years of work experience with a Bachelors Degree or 4 or more years of relevant experience with an Advanced Degree (e.g.

New!

Foster City, CA3 days ago

$192,300–$307,600 Per Year

Strong interpersonal and leadership skills with effective communication (both written and verbal) skills and the ability to present complex ideas in a clear & concise way, a team player with a strong work ethic • You have proven experience as a technical leader with ability to understand the requirements and independently, architect, design and build the solution. You are a trusted technology advisor and thought leader working with architects, DEV leads, test engineering leads, TPMs, product managers, security architects, and other partners across the organization in ensuring that what we build is secure, scalable, performant, and reliable.

Foster City, CA10 days ago

$123,000–$190,900 Per Year

DAP delivers secure, high-quality and easy-to-use Visa core data assets as a service, together with reliable and scalable data platform as a service, to enable Visa and our partners to rapidly and efficiently innovate data-driven business products and services to lead the digital payment industry. The Data and Artificial Intelligence Platform (DAP) group is a key component of Visa's Technology organization that provides the enabling technology and processes to handle Visa's data assets and deliver valuable information, products, and services to customers.

New!

Cupertino,, California4 days ago

$75–$85 Per Hour
Contractor

The specific compensation for this position will be determined by a number of factors, including the scope, complexity and location of the role as well as the cost of labor in the market; the skills, education, training, credentials and experience of the candidate; and other conditions of employment. This will be a data engineer role for processing battery testing data to facilitate battery algorithm delivery and support battery algorithm simulations to validate the battery algorithm and project the product KPIs.

Foster City, CA10 days ago

$192,300–$307,600 Per Year

Familiarity with AI/ML frameworks and chatbot integrations for operational automation Middleware Expertise • Understanding of middleware technologies (Message Queues, Service Bus, API • Gateways) • Experience with application servers (Tomcat, JBoss, WebSphere) • Knowledge of integration platforms and their deployment patterns • Proficiency in troubleshooting and performance optimization Education • Bachelor's or Master's degree in Computer Science or related field, or equivalent experience • We value hands-on experience and continuous learning over specific degrees. • Solid understanding of Linux/Unix systems, networking protocols, certificate management, secret management, system design, cloud platforms (AWS, • Azure, GCP), and containerization (Kubernetes, Docker • Proficiency with monitoring tools (Prometheus, Grafana, Datadog, etc.), logging systems (ELK stack, Splunk), and tracing tools (Jaeger, Zipkin).

Foster City, CA10 days ago

$192,300–$307,600 Per Year

Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid. Leverage modern technologies to build the next generation of Payment Services, Transaction Platforms, Real-Time Payments, and Buy Now Pay Later capabilities.

San Mateo, CA16 days ago

$60–$70 Per Hour
Temporary
Contractor
Full-time

features, lighting integration, module integration, tooling, resins, supply base, fit and finish, gap and flush, module concept, thermal expansion, structural design, paint (matching). The Mice Groups does not currently collect personal identifying information via its website except (i) to the extent that you provide this information in an online job application and (ii) to the extent that your web browser provides personal identifying information.

New!

Cupertino, California4 days ago

Contractor

We are seeking a data Scientist to help the Digital Marke ng team understand public consumer feedback at scale, excavate insights to optimize our marketing and product decisions, and monitor external brand relevancy. The specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment.

New!

San Francisco, CAToday

$140,000–$170,000 Per Year

We partner with top cloud platforms like Snowflake, AWS, Azure, GCP, Databricks, Fivetran, Pinecone, Glean, and dbt to deliver innovative data, cloud, and machine learning solutions that help enterprises unlock the true power of their data. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

Foster City, CA9 days ago

$137,400–$212,500 Per Year

The AI Center of Excellence (AI COE), part of the Global Data Office, is at the forefront of this mission—developing reusable AI/ML frameworks, enabling agentic AI workflows, and accelerating innovation across Visa’s data science community. Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.

New!

Santa Clara, CAToday

Join the Amazon Kiro LLM-Training team and help create groundbreaking generative AI technologies including Kiro IDE and Amazon Q Developer that are transforming the software development landscape. We're leveraging the latest advances in AI to transform how engineers work from IDE environments to web-based tools and services, empowering developers to tackle projects of any scale with unprecedented efficiency.

New!

Santa Clara, CAToday

As a member of the UC organization, you’ll support the development and management of Compute, Database, Storage, Internet of Things (Iot), Platform, and Productivity Apps services in AWS, including support for customers who require specialized security solutions for their cloud services. Our mission is to provide a delightful experience to Amazon’s customers by pushing the envelope in Natural Language Understanding (NLU), Dialog Systems including Generative AI with Large Language Models (LLMs) and Applied Machine Learning (ML).

New!

Palo Alto, CAToday

Impact and Career Growth: You will invent new experiences and influence customer-facing shopping experiences to help suppliers grow their retail business and the auction dynamics that leverage native advertising; this is your opportunity to work within the fastest-growing businesses across all of Amazon! - Build machine learning models, perform proof-of-concept, experiment, optimize, and deploy your models into production; work closely with software engineers to assist in productionizing your ML models.

New!

CaliforniaToday

$50–$55 Per Hour
Contractor

The specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. Provide guidance on linguistic knowledge, including typology, morpho-syntax, sociolinguistics, classification, phonetics/phonology, and pragmatics.

Palo Alto, CA9 days ago

$0–$75 Per Hour

Understanding of the endpoint and identity considerations unique to AI tools: network allowlisting for LLM API endpoints, DLP policy tuning for AI-generated content, user provisioning workflows, and communicating rollout plans across IT, Security, and end-user teams. Familiarity with deploying Claude Code or GitHub Copilot to engineering teams including managing licensing, IDE plugin distribution via MDM (Jamf/Intune), and API key or credential management through secure vaulting solutions.

Foster City, CA10 days ago

$123,000–$190,900 Per Year

Preferred Qualifications • 2 years or more with an Advanced Degree (Masters/PhD in Computer Science) • Proficiency in implementing and fine-tuning AI models using popular frameworks (e.g., TensorFlow, PyTorch, scikit-learn) • Exposure to leading-edge areas such as Machine Learning, Deep Learning, Stream Computing and MLOps. Translate complex business challenges into clear engineering roadmaps, user requirements, and technical specifications that enable breakthrough innovation across payment flows, fraud intelligence, data products, and real‑time commerce platforms.

New!

San Jose, CA4 days ago

$78,000–$127,000 Per Year

Since 2010 , SynergisticIT has helped candidates return to the workforce and land full-time jobs at major employers—companies like Google, Apple, PayPal, Visa, Western Union, Wells Fargo, Intel, Citi, JPMC, Walmart Labs, Deloitte , and more—often with offers between $90,000 and $154,000 depending on role and expertise. SynergisticIT commonly supports hiring pipelines for roles such as junior software programmer , Java full stack engineer , Python/Java developer , DevOps/cloud engineer , plus data-track roles like data analyst , BI analyst , data engineer , data scientist , and ML/AI engineer .

New!

Santa Clara, CAToday

We are looking for world class researchers with experience in one or more of the following areas - autonomous agents, API orchestration, Planning, large multimodal models (especially vision-language models), reinforcement learning (RL) and sequential decision making. You will have the opportunity to partner with technology and business teams to solve real-world problems, have access to virtually endless data and computational resources, and to world-class engineers and developers that can help bring your ideas into the world.

New!

Santa Clara, CAToday

Our mission is to provide a delightful experience to Amazon’s customers by pushing the envelope in Natural Language Understanding (NLU), Dialog Systems including Generative AI with Large Language Models (LLMs) and Applied Machine Learning (ML). As part of our Science team in AWS Console, you will work alongside internationally recognized experts to develop novel algorithms and modeling techniques to advance the state-of-the-art in human language technology.

New!

Dublin, CAToday

Partner closely with subject matter experts to ensure models reflect real-world conditions. Develop quantitative risk frameworks to assess risks associated with transmission rights of way.

New!

Santa Clara, CAToday

San Jose, CA16 days ago

$78,000–$145,000 Per Year
Temporary
Contractor
Full-time

Since 2010, SynergisticIT has helped candidates return to the workforce and land full-time jobs at major employers—companies like Google, Apple, PayPal, Visa, Western Union, Wells Fargo, Client, Client, Banking, Walmart Labs, Client, and more—often with offers between $90,000 and $154,000 depending on role and expertise. SynergisticIT commonly supports hiring pipelines for roles such as junior software programmer, Java full stack engineer, Python/Java developer, DevOps/cloud engineer, plus data-track roles like data analyst, BI analyst, data engineer, data scientist, and ML/AI engineer.

Santa clara, CA27 days ago

$78,000–$136,000 Per Year
Temporary
Contractor
Full-time

SynergisticIT since 2010 has helped candidates land full-time roles at major organizations (examples often listed include Google, Apple, PayPal, Visa, Western Union, Wells Fargo, Client, Banking, Client, Client, Wayfair, and others), with offers in the $95k–$154k range depending on role and stack. We're actively engaging candidates for full-time opportunities aligned to client needs: software programming, Java full stack development, Java/Python roles, DevOps engineering, and data roles spanning analytics, engineering, science, and ML/AI.

San Jose, CA20 days ago

$91,000–$127,000 Per Year
Temporary
Contractor
Full-time

Since 2010, SynergisticIT has helped candidates return to the workforce and land full-time jobs at major employers—companies like Google, Apple, PayPal, Visa, Western Union, Wells Fargo, Client, Client, Banking, Walmart Labs, Client, and more—often with offers between $90,000 and $154,000 depending on role and expertise. SynergisticIT commonly supports hiring pipelines for roles such as junior software programmer, Java full stack engineer, Python/Java developer, DevOps/cloud engineer, plus data-track roles like data analyst, BI analyst, data engineer, data scientist, and ML/AI engineer.

San Francisco, CA12 days ago

$200,000–$250,000 Per Year

This includes multimodal perception, model reliability, reinforcement learning, evaluation systems, and the infrastructure required to operate AI agents safely inside enterprise environments. The engineering team is small, highly technical, and composed of builders from top research institutions and high-bar technology companies.

San Jose, CA9 days ago

As a CMMI Level 5 and Great Place to Work® Certified global IT consulting and services company—and recognized as one of the Best Places for Women—we are committed to building an inclusive, supportive, and high-performance workplace. This unique role blends three key domains: MLOps & Data: You will architect the entire data lifecycle, including our CI/CD pipelines, data-labeling loops, and on-device monitoring.

Santa Clara, CA30+ days ago

$190,000–$230,000 Per Year

OverviewOur client, an industry leader in AI-driven software solutions, is seeking an experienced AI / Machine Learning Engineer to design, build, and deploy intelligent systems that power predictive analytics, natural language understanding, and generative AI applications. The ideal candidate will work cross-functionally with data engineers, software developers, and product teams to integrate models into scalable, high-performance applications.

New!

Sunnyvale, CAToday

$150,000–$450,000 Per Year

Strategic and innovative problem-solving skills will be instrumental in establishing MBZUAI as a global hub for high-performance computing in deep learning, driving impactful discoveries that inspire the next generation of AI pioneers. Understand, analyze, profile, optimize, and provide guidance to the team on deep learning workloads on state-of-the-art hardware and software platforms to improve their efficiency with different levels of optimization .

New!

Cupertino, CAToday

$181,100–$272,100 Per Year

You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses — including tuition. 3+ years experience in machine learning algorithms, software engineering, and data mining models with an emphasis on large language models (LLM) or large multimodal models (LMM).

New!

Mountain View, CA4 days ago

$139,900–$274,800 Per Year

There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year. We’re looking for a hands-on ML engineer to prototype and productionize complex classification flows on real production logs, operate prompted classifiers at scale (ad hoc and scheduled), and build secure, compliant data-labeling pipelines.

San Francisco, CA30+ days ago

Full-time

Job Description:We are looking for an ML Engineer with 3+ YOE in high-performance computing systems to manage and optimize our computational infrastructure for training and deploying our machine learning models. Experience with cloud computing platforms such as Amazon Web Services, Google Cloud, or Microsoft Azure, essential for managing large-scale ML workloads.

San Jose, CA30+ days ago

There AI Core group pioneers’ platforms across Generative AI, AI Agents, RAG, Knowledge Bases, Data Mining, Anomaly Detection, and LLM fine-tuning — powering flagship products and enabling entirely new offerings. As one of our AI ML Engineer’s, you'll be a key technical leader and thought leader, shaping our ML strategy and building intelligent, high-performance multi-agent systems that perceive, learn, and act in real time.

Santa Clara, CA30+ days ago

MS or PhD in Computer Science, Artificial Intelligence, Machine Learning, Information Retrieval, Data Science or related field + 5+ years of experience in machine learning, deep learning, information retrieval, natural language processing or data mining + Experience being a tech lead, and has been successfully leading a team to ship software to users + Excellent knowledge and good practical skills in designing ML platforms, architectures or algorithms + Strong interpersonal skills able to work independently as well as in a team . You will also work with researchers and data scientists to develop, fine-tune, and evaluate domain specific LLMs for various tasks and applications in Apple’s AI powered products, also conduct applied research to transfer the groundbreaking research in generative AI to production ready technologies.

Foster City, CA30+ days ago

The Prediction & Behavior ML team is responsible for developing machine learning (ML) algorithms that learn and predict behaviors from data, applying them both on-vehicle to influence driving behavior and off-vehicle to provide ML capabilities to simulation and validation. As a Learned Trajectory Machine Learning Engineer you will be responsible for developing deep learned models that produce trajectories for our vehicles to drive.

Foster City, CA18 days ago

New!

Mountain View, CAToday

$220,500–$298,500 Per Year

You will partner closely with engineers, platform leaders, product managers, and applied scientists to identify high-value opportunities, prototype breakthrough ideas, and mature them into scalable platform capabilities that accelerate AI adoption across Intuit. Intuit is seeking a Senior Staff Machine Learning Engineer to help shape the future of the Intuit Business Platform through advanced AI research, rapid experimentation, and platform capability innovation.

New!

Santa Clara, CAToday

6 years of experience in various state-of-the-art techniques related to LLM fine-tuning in 1 or more of the following areas: Supervised Fine-tuning (SFT) with Rejection Sampling, Preference-based fine-tuning techniques (e.g RLHF, Reward model, DPO, PPO, GRPO etc.), Parameter efficient fine-tuning techniques (e.g LoRA), Hallucination reduction and factual accuracy improvements, Designing and implementing safety guardrails. You will also work with researchers and data scientists to develop, fine-tune, and evaluate domain specific Large Language Models for various tasks and applications in Apple's AI powered products and conduct applied research to transfer the cutting edge research in generative AI to production ready technologies.

Mountain View, California30+ days ago

Build Tool Machines for Agents Create reliable, safe, and extensible tools that allow agents to interact with external systems, APIs, and data sources . Architect & Build Agentic Systems Design and develop our core agentic AI platform, enabling autonomous reasoning, decision-making, and continuous learning .

Santa Clara, CA30+ days ago

$60–$95 Per Hour

Architect solutions for complex data platforms, and large scale CI/CD data pipelines using a variety of technologies, relational and non-relational databases, and data warehouse solutions for data-driven marketing and compliance requirements. As a Machine Learning Engineer, you'll work alongside NVIDIA's data annotation platform team, dedicated to addressing our evolving annotation data needs for training and evaluating LLMs.

New!

San Jose, CAToday

$110,000–$300,000 Per Year

Develop, optimize, and deploy lightweight machine learning models for edge AI applications, particularly for audio processing. Research and implement state-of-the-art ML techniques to enhance model efficiency, latency, and power consumption for embedded AI applications.

Santa Clara, CA30+ days ago

$60–$95 Per Hour

Palo Alto, CA30+ days ago

$115,000–$130,000 Per Year

We're ALTEN Technology USA, an engineering company helping clients bring groundbreaking ideas to life—from advancing space exploration and life-saving medical devices to building autonomous electric vehicles. The Perception team is looking for a machine learning engineer to develop cutting-edge Computer Vision modules to enhance the on-board perception of our robotic fleet, directly impacting safety and fleet efficiency.

Fremont, CA30+ days ago

$110,000–$300,000 Per Year

New!

San Jose, CAToday

$212,800–$450,000 Per Year

Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues; 2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and . Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.

Resume Resources

Free Resume Templates Free Resume Builder

Get noticed by top employers!

Upload your resume to let employers know you're open to Machine Learning Engineer job opportunities. Plus, receive relevant job recommendations in your inbox.

Machine Learning Engineer Jobs in Sunnyvale, CA

Staff Machine Learning Engineer, Responsible AI Engineering Visa Technology and Operations LLC

AI & Machine Learning Engineer Synergistic it

Manufacturing Test Development Engineer Jobot

Senior Staff Engineer, AI Governance Visa Technology and Operations LLC

Software Engineer - Sr Consultant level Visa Technology and Operations LLC

Data Engineer - Sr. Consultant level Visa Technology and Operations LLC

Staff Data Engineer Visa Technology and Operations LLC

Lead SW Engineer - IC - Risk and Identity Solutions Visa Technology and Operations LLC

Sr. Data Engineer Visa Technology and Operations LLC

Data Engineer III Pinnacle Technical Resources

Lead Software Engineer, Middleware Reliability Engineering Visa Technology and Operations LLC

Lead Software Engineer Visa Technology and Operations LLC

Exterior Trim Engineer Mice Groups

Data Scientist Pinnacle Technical Resources

Solutions Architect - (Data Engineering) Jobot

AI COE Analyst Visa Technology and Operations LLC

Applied Scientist, LLM Code Agents, Kiro Science Amazon Development Center U.S., Inc.

Applied Scientist II, Console Science Amazon Development Center U.S., Inc.

Applied Scientist, Amazon Ads, Demand Forecasting & Guidance Amazon.com Services LLC

Linguist III Pinnacle Technical Resources

Endpoint Engineer - Hybrid (2 Openings) DivIHN Integration Inc

Applications Program Analyst Visa Technology and Operations LLC

Entry Level Data Scientist/Analyst/Java full stack developer Synergistic it

Sr. Applied Science , AWS Agentic AI Amazon.com Services LLC

Applied Scientist, Console Science Amazon Development Center U.S., Inc. - B02

Data Scientist Axelon Services Corporation

Senior Applied Scientist, LLM Code Agents, Kiro Science Amazon.com Services LLC

Entry level Java developer/ data scientist SynergisticIT

Entry level Java spring boot developer/ data scientist SynergisticIT

Entry level Java/MERN Developer/Data scientist/Analyst SynergisticIT

Founding Machine Learning Engineer - On-site - San Francisco, CA Connect Staffing and Consulting

Staff Machine Learning Engineer SA Technologies

AI / Machine Learning Engineer Caltek Staffing

Distributed Machine Learning Engineer Institute Of Foundation Models

Machine Learning Engineer - LLM Apple, Inc.

Principal Machine Learning Engineer Microsoft

Machine Learning Engineer, Training Infrastructure IntelliPro Group Inc.

AI Staff Machine Learning Engineer, General AI, ML & Big Data C-Serv

AIML - Machine Learning Engineer, Visual Intelligence Technology Apple

Staff / Senior Staff Software Engineer - Learned Trajectory Machine Learning Engineer Zoox

Software Engineer - Learned Trajectory Machine Learning Engineer Zoox

Senior Staff Machine Learning Engineer, AI Platform & Emerging Capabilities Intuit

Senior/Staff Machine Learning Engineer, Apple Search & Knowledge Platforms Apple, Inc.

Machine Learning Engineer Barker Staffing Solutions LLC

Machine Learning Engineer - Data & Annotation Platforms Sustainable Talent

Mid-Level Machine Learning Engineer TetraMem

Machine Learning Engineer Sustainable Talent

Machine Learning Engineer, Computer Vision ALTEN Technology USA

Machine Learning Engineer NR Consulting LLC

Machine Learning Engineer - PICO Perception - San Jose Bytedance

Resume Resources