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Let’s say that your company is running a standard control and variant AB test on a feature to increase conversion rates on the landing page. The PM checks the results and finds a .04 p-value.

How would you assess the validity of the result?

Experiment Validity

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

Let’s say we have a table with an <code>id</code> and <code>name</code> fields. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.

Write a query to randomly sample a row from this table.

Input:

<code>big_table</code> table

<table>
<thead>
<tr>
<th>Columns</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>

Write a query to randomly sample a row from a big table.

Random SQL Sample

Foundry Salaries by Position

About Foundry At Foundry, we are transforming the way AI companies access compute power. Our mission is to orchestrate the world's compute capacity, making it easier to use and optimized for AI workloads. We're building a new type of public cloud-one designed specifically for AI, where accessing high-performance compute is as simple and reliable as flipping a switch. Spun out of a Stanford PhD lab just over a year ago, Foundry has already gained the backing of top-tier investors like Sequoia, Lightspeed, Jeff Dean, Eric Schmidt, and others. With $80M in funding, we've secured customers and are generating revenue. Today's machine learning infrastructure is overly complex. Engineers are forced to make tough decisions about hardware, when their focus should be on solving big problems and driving innovation. Our platform changes that. By abstracting away hardware management and providing seamless access to compute resources, we enable engineers to focus on what really matters-building transformative AI solutions. We're not just making compute accessible; we're making it flexible, scalable, and tailored for the unique demands of AI. Our infrastructure marketplace brings the power of state-of-the-art hardware without the friction, allowing companies to innovate faster and more efficiently. Working at Foundry As an engineer at Foundry, you'll be at the forefront of building the infrastructure that powers the future of AI. Your role is critical-not just in scaling our systems, but in ensuring they are secure at every level. In an era where AI workloads are becoming larger and more sensitive, security isn't just a priority, it's the foundation of everything we build. Our platform supports cutting-edge AI workloads, managing vast amounts of data and operating in high-performance, multi-tenant environments. Security is integrated into every layer-from safeguarding GPU clusters to protecting data in real-time. We expect every engineer to be a security-first thinker, designing and implementing solutions that protect both our infrastructure and the AI workloads running on it. If you're motivated by the challenge of securing the core infrastructure behind AI and thrive in a fast-paced, high-impact environment, Foundry is the place for you. Here, autonomy and ownership are paramount. You'll have the freedom to make significant decisions, backed by a collaborative and inclusive team. Our flat structure ensures your ideas don't get lost in hierarchy-every engineer shapes both the product and the company's direction. At Foundry, we demand precision, clear communication, and relentless innovation in how we approach security and scalability. If you're passionate about pushing boundaries and securing the future of AI, join us and be a part of something transformative. Joining Foundry As the first full time Security Engineer at Foundry, you'll lead the development of our security infrastructure from the ground up. Your work will be essential to safeguarding our AI cloud platform, ensuring that customer data, AI models, and high-performance workloads are secure at every stage. This role is about more than just securing servers-you will be at the forefront of protecting an entirely new form of AI infrastructure, working with advanced hardware (GPUs) and distributed cloud systems. Responsibilities <ul><li>Build and implement security strategies for AI workloads, including the secure handling of sensitive data and model artifacts.</li><li>Lead efforts to secure our distributed cloud infrastructure, focusing on containerized environments (Kubernetes), cloud-native security, and scaling across multiple regions.</li><li>Design and integrate security measures directly into our orchestration platform to protect customer workloads and ensure secure multi-tenant environments.</li><li>Implement zero-trust security architectures to protect data flows between distributed AI compute resources.</li><li>Secure cloud-based and on-premise GPU servers, ensuring compliance and data protection across regions and regulatory environments.</li><li>Lead penetration testing, threat modeling, and red team exercises to anticipate and defend against advanced persistent threats.</li><li>Identify and mitigate vulnerabilities in code (Python, TypeScript) and infrastructure, focusing on infrastructure as code (Terraform) and cloud services.</li><li>Establish security guidelines and best practices for AI-specific workloads, including data encryption, secure model storage, and access control for training and inference pipelines.</li></ul>Requirements <ul><li>5+ years of experience in software or security engineering, with a focus on application and infrastructure security.</li><li>Knowledge of modern adversary tactics, techniques, and procedures.</li><li>Familiarity with security testing tools and methodologies (e.g., static code analysis, penetration testing)</li><li>Expertise in Python and TypeScript, with experience securing production-level code.</li><li>Experience in cloud security, particularly with major cloud providers (AWS, Azure, GCP).</li><li>Experience with zero-trust architectures, encryption protocols, and secure communication methods.</li><li>Knowledge of infrastructure as code tools like Terraform, focusing on secure configuration and compliance.</li><li>A passion for protecting AI and machine learning workloads, understanding the unique security requirements of GPU infrastructure..</li><li>Exceptional problem-solving skills and the ability to anticipate vulnerabilities and build scalable, secure solutions.</li></ul>Nice to have <ul><li>Familiarity with GPUs and AI workloads</li><li>Experience with security Kubernetes-based infrastructure</li><li>Experience with VM security</li><li>Knowledge of infrastructure as code tools such as Terraform</li><li>Experience providing design-level guidance, including threat modeling and security architecture reviews</li><li>Experience taking an active role in SOC 2, ISO 27001, and other compliance audits</li></ul>Benefits <ul><li>Health, dental, and vision coverage for you and your dependents</li><li>401k Plan with 4% company match</li><li>21 days of PTO & 14 company holidays; including 2 floating holidays</li></ul> Salary Range Information In consideration of market analysis and various pertinent factors, the remuneration bracket for this role is set between $170,000 and $250,000. Nevertheless, adjustments beyond this range could be warranted for candidates whose qualifications substantially deviate from those delineated in the job description. In-Office requirement At Foundry, we take our work extremely seriously, though not always ourselves. We recognize that we are striving to achieve something substantial-an all-too-rare and elusive counterfactual contribution. Our work is not easy, so we seek out any lever that can accelerate our progress and increase the likelihood of realizing our full ambitions. Working collaboratively in person is one such lever. Our headquarters is in Palo Alto (next to Caltrain on University Ave.), and we recently opened a new office in San Francisco (Financial District/SoMa) for our teammates based there. We expect team members to primarily work from their home office, with everyone gathering at HQ one day a week while our team remains small and cross-team collaboration is critical. This approach is built on trust. We take our mission seriously and are committed to fostering an environment where you can make impactful decisions and drive success. We also understand that life can present challenges, and if extenuating circumstances arise, we're here to support you. Ultimately, we believe this guidance helps us be as effective as possible while maintaining the spirit of teamwork and flexibility. Equal Opportunity Employer Foundry maintains a strict commitment to Equal Opportunity employment practices. All applicants are evaluated without regard to race, color, religion, creed, national origin, age, sex, gender, marital status, sexual orientation and identity, genetic information, veteran status, citizenship, or any other factors prohibited by local, state, or federal law. We emphasize that candidates need not fulfill every expectation listed to be eligible for this position. Our objective is to cultivate a diverse team encompassing a spectrum of backgrounds, experiences, and skill sets.

Welcome to Foundry, a cryptocurrency pioneer dedicated to advancing decentralized infrastructure. At Foundry, we're not waiting for a decentralized financial future - we're building it now. By empowering institutions with the tools they need to mine and stake digital assets, we're thoughtfully driving the industry forward with our team at the center of it all. If you thrive on innovation, are inspired by the potential of blockchain technology and are passionate about being part of transformative global changes, then we'd love to connect. At Foundry, your skills will find purpose as you contribute to shaping the architecture of a more equitable and interconnected world through blockchain technology. Come be a vital member of the Foundry team, where your contributions will help empower a decentralized future. DESCRIPTION: The Bittensor Product Manager is an exciting opportunity for a motivated and passionate individual to join the team at Foundry, a subsidiary of the blockchain industry's most prolific and active investor, Digital Currency Group. Reporting to the VP of AI, the Bittensor Product Manger will lead the discovery, development, and launch of subprojects on the Bittensor Network. You will work closely with engineering teams to deliver new products to meet the needs of our customers and further the mission of decentralized AI. This position is required to sit in Rochester, NY. This is a rare invitation to join a small, highly professional entrepreneurial group, with the backing of the most established player in the fast-growing crypto space. PRIMARY RESPONSIBILITIES: Determine, define, and prioritize product requirements and roadmaps for projects built on top of the Bittensor ecosystem. Collaborate with cross-functional teams to launch world-class product features and capabilities. WHAT YOU WILL DO: <ul><li>Define and prioritize product requirements and roadmaps for projects built on top of Bittensor.</li><li>Collaborate with cross-functional teams to develop and launch new features and capabilities.</li><li>Conduct market research and competitive analysis to identify market trends and opportunities.</li><li>Develop and maintain product documentation, including user guides, technical specifications, and release notes.</li><li>Manage the product backlog, prioritize features, and coordinate with engineering teams to ensure timely delivery.</li><li>Conduct user research and gather feedback to inform product decisions and improve user experience.</li><li>Collaborate with marketing and sales teams to develop and execute go-to-market strategies.</li><li>Monitor product performance, analyze usage data, and identify opportunities for improvement.</li><li>Stay up-to-date with the latest developments in AI, blockchain, and related technologies.</li></ul> Minimum Qualifications; Knowledge, Skills and Abilities: <ul><li>Bachelor's or Master's degree in Computer Science, Business Administration, or a related field.</li><li>3+ years of experience in product management, with a focus in blockchain and/or AI sectors.</li><li>Strong understanding of AI and macine learning concepts such as neural networks, deep learning, or natural language processing.</li><li>Proficiency in programming languages commonly used in blockchain and AI projects, such as Python or Rust.</li><li>Familiarity with blockchain principles, technologies, and platforms. Specific knowledge of the Bittensor network would be beneficial.</li><li>Experience with software development lifecycle, agile methodologies, and product management tools such as Jira.</li><li>Excellent communication and collaboration skills, with the ability to work effectively in a team environment.</li><li>Demonstrated ability to lead and motivate teams, manage conflicts, and drive projects towards successful outcomes.</li><li>Strong analytical and problem-solving skills, with the ability to make data-driven decisions.</li><li>Experience with user research and user experience principles.</li></ul> Preferred Qualifications; Knowledge, Skills and Abilities: <ul><li>Active participation in blockchain and/or AI communities, forums, and events.</li><li>Prior experience working directly with the Bittensor network or similar decentralized AI networks.</li><li>Advanced knowledge of data analysis, data engineering, and big data technologies.</li><li>Ability to thrive in fast-paced, innovative environments and adapt to emerging technologies and market trends.</li><li>Passion for decentralization and exploring new technologies.</li></ul> The salary range for this role is $80,000-$125,000. This is the range that we in good faith believe is the range of possible compensation for this role at the time of posting. We may ultimately pay more or less than the posted range. This range may be modified in the future. This range only includes base compensation and does not include other tangible benefits such as 401K match, bonuses, overtime pay, and other benefits. Please note that employment is contingent upon successful completion of a background check. WHAT WE OFFER: <ul><li>The chance to work in a fast-paced and fun start-up environment with experienced industry leaders</li><li>A learning environment where you can dive deep into the latest technologies and make an impact</li><li>Competitive base salary, potential bonus and incentive compensation </li><li>Unlimited PTO / Flexible time off - work with your manager to take time off when you need it</li><li>Professional development budget with flexibility for personal and professional growth</li><li>Outstanding health insurance for employee, partner and dependents</li><li>Life insurance</li><li>Short-term & long-term disability coverage (Not available for India positions)</li><li>401K plan with company contribution (Bermuda: Private pension plan with company contribution, Not available for India positions)</li><li>Flexible spending programs for medical and dependent care (Not available for Bermuda/India positions)</li><li>Paid parental leave</li></ul> ENVIRONMENT: Foundry takes pride in an environment which prioritizes our people. We insist that our people first culture builds the framework for all business operations. Employees have ample opportunities to voice thoughts, opinions, and ideas through weekly companywide meetings, monthly townhalls, and team outings and events. We emphasize the importance of each individual through engagement, teamwork, inclusion, and diversity efforts. Foundry is an Equal Opportunity Employer and embraces diversity. We do not tolerate discrimination or harassment based on race, color, religion, marital status, gender (including pregnancy, childbirth or related medical conditions), gender identity, sexual orientation, parental status, national origin, age, disability, genetic information (including family medical history), political affiliation, military service, or any other non-merit-based factors protected under federal, state or local law. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, transfer, leaves of absence, compensation, and training. ABOUT FOUNDRY: At Foundry, we are working toward a common goal of empowering a decentralized infrastructure. Our team is passionate about the future of finance and is looking for other like-minded individuals who share in this vision. While we are inclusive and diverse in workforce and style, we all agree that digital assets will change the world. Foundry was created to meet the institutional demand for better capital access, efficiency, and transparency in the digital currency mining and staking industry. As a Digital Currency Group company, Foundry taps unparalleled institutional expertise, capital, and market intelligence to provide North American bitcoin miners and global manufacturers with the resources to build, maintain, and secure decentralized networks. Disclaimer The above statements are intended to describe the general nature and level of work performed by employees assigned to this classification. They are not intended to be construed as an exhaustive list of all responsibilities, duties and skills required of personnel so classified.

Foundry Interview Questions

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Foundry Interview Questions

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