🚀 Join the Future of Commerce with Whatnot!Whatnot is the largest livestream shopping platform in North America and Europe to buy, sell, and discover the things you love. Whether it's trading cards, fashion, electronics, or live plants, our sellers are building real businesses across hundreds of categories. We're building live commerce at a scale that's never been done in the West, and there's no playbook to copy. The people here are shaping how an entirely new industry develops. As a remote co-located team, we're inspired by our values and anchored in hubs across the US, UK, Ireland, Poland, Germany, and Australia. We move fast, stay close to our users, and focus on the work that drives the most impact. We're one of the fastest growing marketplaces and were recently named the #1 Best Startup Employer in America by Forbes. Check out the latest Whatnot updates on our news and engineering blogs and join us as we enable anyone to turn their passion into a business and bring people together through commerce. 💻 Role The Payments - Treasury team at Whatnot are globally responsible for how our business moves and records money and credit in all customer transactions; and how taxes, customs, returns, refunds and more just work, no matter where our customers are in the world. We are deeply connected with the foundations of our business and have unlocked tremendous growth within and across international territories, while creating exciting new ways for our users to interact and transact on the platform. You’ll collaborate closely with our partner team, Payments - Experience, and with other teams and senior leaders across Whatnot. To keep the flywheel spinning, we’re looking to make a number of substantial improvements to critical infrastructure supporting payment scale & reliability, diversity of payment options, fraud mitigation, and improvements in transaction modelling and tax to further provide a seamless international marketplace. Each member of the team has a number of individual responsibilities and is trusted to advance an aspect of the domain as an expert in collaboration with the leadership team. Your ability to make good trade-offs, exercise good judgment and communicate effectively is essential to us. We offer flexibility to work from home or our office hub, and we value in-person time for planning, problem-solving, and connection. Team members in this role must live within commuting distance of our New York, Seattle, Los Angeles or San Francisco hubs. 👋 You People who do well at Whatnot tend to be comfortable figuring things out as they go, biased toward action, and genuinely curious about what they're building. They care more about outcomes than credit and stay close to the product and the people using it. As our next Senior Software Engineer, you should have 7+ years of software development experience building scalable systems that can handle millions of users, plus: - Excellent product instincts. You first think about users and long term objectives when designing a technical solution. - You have designed complex distributed systems that power products used by millions of users. - You’re seasoned in defining the technical roadmap for team, identifying areas that need improvement and leading cross-team solutions. - You can identify, architect, and build the right systems or products to improve the business. - You deeply understand and can explain the various trade offs made in decisions. - You enable collaboration across multiple teams to deliver on cross-team initiatives, while delegating ownership and uplifting those around you. - You can mentor others, and prioritize building inclusive, supportive teams. - You’re a project owner - you have strong ownership instincts and can own projects from inception to production to maintenance. - You’re known for shipping high quality products and features quickly and iteratively towards the ultimate goal. - You’re an excellent problem solver and don’t need to be told exactly what to do. - You’re open to doing frontend work when required. - Have the ability to quickly become effective in new technologies. - Have experience working with payment systems, infrastructure, and international commerce (nice to have). - Have startup experience at a high-growth company (nice to have). - Knowledge of multiple programming languages (we primarily use Python, Elixir, JavaScript - direct experience is nice to have for a well balanced candidate). 🎁 Benefits - Generous Holiday and Time off Policy - Health Insurance options including Medical, Dental, Vision - Work From Home Support - Home office setup allowance - Monthly allowance for cell phone and internet - Care benefits - Monthly allowance for wellness - Annual allowance towards Childcare - Lifetime benefit for family planning, such as adoption or fertility expenses - Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally - Monthly allowance to dogfood the app - All Whatnauts are expected to develop a deep understanding of our product. We're passionate about building the best user experience, and all employees are expected to use Whatnot as both a buyer and a seller as part of their job (our dogfooding budget makes this fun and easy!). - Parental Leave - 16 weeks of paid parental leave + one month gradual return to work *company leave allownces run concurrently with country leave requirements which take precedence 💛 EOEWhatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.

The application window is expected to close on: 09/17/2026 Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received . This role follows a hybrid work model, with in-office attendance expected once a week at the San Francisco location. Meet the Team Cisco ThousandEyes is a Digital Experience Assurance platform that empowers organizations to deliver flawless digital experiences across every network, even the ones they don't own. Powered by AI and an unmatched set of cloud, internet and enterprise network telemetry data, ThousandEyes enables IT teams to proactively detect, diagnose, and remediate issues, before they impact end user experiences. ThousandEyes is deeply integrated across the entire Cisco technology portfolio and beyond, helping customers deploy at scale while also delivering AI powered assurance insights within Cisco's leading Networking, Security, Collaboration, and Observability portfolios. The Alerts Platform team is a small, senior group of engineers building and operating a real time stream processing platform that transforms billions of telemetry events into actionable insights for customers running mission critical systems. Positioned at the core of the Digital Experience Assurance platform, we detect and surface anomalies in seconds so organizations can resolve issues before users are impacted. The team operates with high ownership and autonomy, partnering closely with product and infrastructure teams to solve complex distributed systems challenges at internet scale. Your Impact In this role, you will own the design and delivery of critical components within a real-time data platform that processes billions of events daily under strict SLAs. You will build and operate high-performance microservices powering core customer workflows, taking end-to-end responsibility from architecture through production. You will enhance anomaly detection quality by refining detection logic and tuning signal thresholds to reduce noise and improve accuracy for customers. You will strengthen system reliability and scalability through production ownership, incident leadership, and systemic improvements. As a senior engineer, you will help shape technical direction through design reviews and mentorship, delivering resilient systems that proactively surface and resolve customer issues. Minimum Qualifications - 5+ years of professional software development experience building and operating production systems at scale - Strong proficiency in object-oriented programming languages such as Java, Kotlin, or Scala, with experience designing and building large systems in at least one of them - Strong computer science fundamentals, including data structures, algorithms & object-oriented design - Experience designing and building large scale distributed or real time data processing systems with high throughput and low latency requirements - Bachelor's degree in Computer Science, Engineering, or a related technical field Preferred Qualifications - Experience building real-time streaming pipelines using technologies such as Kafka, Flink, or Spark - Hands-on experience with Docker, Kubernetes, and cloud platforms (AWS and/or GCP) - Experience leading design reviews, driving cross team technical initiatives, and owning multi quarter projects in a fast-paced engineering environment Why Cisco? At Cisco, we're revolutionizing how data and infrastructure connect and protect organizations in the AI era - and beyond. We've been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint. Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you'll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere. We are Cisco, and our power starts with you. Message to applicants applying to work in the U.S. and/or Canada: The starting salary range posted for this position is $165,000.00 to $241,400.00 and reflects the projected salary range for new hires in this position in U.S. and/or Canada locations, not including incentive compensation*, equity, or benefits. Individual pay is determined by the candidate's hiring location, market conditions, job-related skillset, experience, qualifications, education, certifications, and/or training. The full salary range for certain locations is listed below. For locations not listed below, the recruiter can share more details about compensation for the role in your location during the hiring process. U.S. employees are offered benefits, subject to Cisco's plan eligibility rules, which include medical, dental and vision insurance, a 401(k) plan with a Cisco matching contribution, paid parental leave, short and long-term disability coverage, and basic life insurance. Please see the Cisco careers site to discover more benefits and perks. Employees may be eligible to receive grants of Cisco restricted stock units, which vest following continued employment with Cisco for defined periods of time. U.S. employees are eligible for paid time away as described below, subject to Cisco's policies: - 10 paid holidays per full calendar year, plus 1 floating holiday for non-exempt employees - 1 paid day off for employee's birthday, paid year-end holiday shutdown, and 4 paid days off for personal wellness determined by Cisco - Non-exempt employees** receive 16 days of paid vacation time per full calendar year, accrued at rate of 4.92 hours per pay period for full-time employees - Exempt employees participate in Cisco's flexible vacation time off program, which has no defined limit on how much vacation time eligible employees may use (subject to availability and some business limitations) - 80 hours of sick time off provided on hire date and each January 1st thereafter, and up to 80 hours of unused sick time carried forward from one calendar year to the next - Additional paid time away may be requested to deal with critical or emergency issues for family members - Optional 10 paid days per full calendar year to volunteer For non-sales roles, employees are also eligible to earn annual bonuses subject to Cisco's policies. Employees on sales plans earn performance-based incentive pay on top of their base salary, which is split between quota and non-quota components, subject to the applicable Cisco plan. For quota-based incentive pay, Cisco typically pays as follows: - .75% of incentive target for each 1% of revenue attainment up to 50% of quota; - 1.5% of incentive target for each 1% of attainment between 50% and 75%; - 1% of incentive target for each 1% of attainment between 75% and 100%; and - Once performance exceeds 100% attainment, incentive rates are at or above 1% for each 1% of attainment with no cap on incentive compensation. For non-quota-based sales performance elements such as strategic sales objectives, Cisco may pay 0% up to 125% of target. Cisco sales plans do not have a minimum threshold of performance for sales incentive compensation to be paid. The applicable full salary ranges for this position, by specific state, are listed below: New York City Metro Area: $165,000.00 - $277,600.00 Non-Metro New York state & Washington state: $146,700.00 - $247,000.00 * For quota-based sales roles on Cisco's sales plan, the ranges provided in this posting include base pay and sales target incentive compensation combined. ** Employees in Illinois, whether exempt or non-exempt, will participate in a unique time off program to meet local requirements.

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at www.coreweave.com. What You'll Do: The AI team is a hands-on applied AI group at Weights & Biases that turns frontier research into teachable workflows. We collaborate with leading enterprises and the OSS community. We are the team that took W&B from a few hundred users to millions of users and one of the most beloved tools in the ML community. A senior applied role at the research-to-product boundary. You will design, implement, and evaluate LLM applications and agents with cutting-edge techniques from the latest research, then document and teach them to our community and customers. The focus is application, not novel research: rapid prototyping, careful evaluation, and production-grade reference implementations with clear trade-offs. We prioritize responsible, safe deployment and reproducibility. About the role: - Ship end-to-end GenAI workflows (prompting → RAG → tools/agents → eval → serve) with reproducible repos, W&B Reports, and dashboards others can run. - Build agentic systems (tool use, function calling, multi-step planners) with MCP servers/clients and secure tool/resource integrations. - Design evaluation harnesses (RAG/agent evals, golden sets, regression tests, telemetry) and drive continuous improvement via offline + online metrics. - Build in public: Publish engineering artifacts (code, docs, talks, tutorials) and engage with OSS and customer engineers; turn repeated patterns into reusable templates. - Partner with product/solutions to launch LLM-powered features with clear latency/cost/SLO targets and safety/guardrail checks. - Run growth experiments to track the usage of the Weights & Biases suite of products from the artifacts built. Who You Are: - Software engineering: 6+ years building production systems; strong Python or TypeScript + system design, testing, CI/CD, observability. - GenAI apps: shipped LLM-powered features (tools/agents/function calling), with measurable impact (latency/cost/reliability). - Agentic patterns: implemented planners/executors, tool orchestration, sandboxing, and failure taxonomies; familiarity with agent infra concerns. - RAG: pragmatic mastery of chunking, embeddings, vector/hybrid search, rerankers; experience with vector DBs/search indices and retrieval policy design. - Evaluation: designed LLM/RAG/agent evals (offline golden sets, counterfactuals, user studies, guardrail tests); stats literacy (variance, CIs, power). - Serving & productization: comfortable with queueing, caching, streaming, and cost controls; can debug latency at model, retrieval, and network layers. - Public signal: 2+ substantial OSS repos/blog posts/talks/videos with adoption (stars, forks, downloads, views) and reproducible artifacts. Preferred: - Experience building with AI SDKs / agent frameworks (e.g., TypeScript/Python SDKs, planning libraries) and shipping developer-facing examples. - Production agent security/sandboxing, red-teaming, and policy/PII enforcement. - Operated eval platforms or built judge models/heuristics; experience leading metrics reviews with product/UX. - Customer-facing enablement: templates or reference implementations adopted by external teams at scale. Wondering if you’re a good fit? We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams – even if you aren't a 100% skill or experience match. Here are a few qualities we’ve found compatible with our team. If some of this describes you, we’d love to talk. - You love turning ambiguous product ideas into clean, benchmarked, production-ready LLM/agent workflows others can use today. - You’re curious about the latest research from AI labs and excited to apply it to real-world problems. - You’re an expert in at least one of: RAG quality at scale, agent/tool orchestration, or GenAI DX (SDKs, examples, docs)—and you can demonstrate it with code and metrics. Why Us?We work hard, have fun, and move fast! We’re in an exciting stage of hyper-growth that you will not want to miss out on. We’re not afraid of a little chaos, and we’re constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values: - Be Curious at Your Core - Act Like an Owner - Empower Employees - Deliver Best-in-Class Client Experiences - Achieve More Together We support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and provides the opportunity to develop innovative solutions to complex problems. As we get set for takeoff, the growth opportunities within the organization are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us! The base salary range for this role is $188,000 to $275,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility). What We Offer The range we’ve posted represents the typical compensation range for this role. To determine actual compensation, we review the market rate for each candidate which can include a variety of factors. These include qualifications, experience, interview performance, and location. In addition to a competitive salary, we offer a variety of benefits to support your needs, including: - Medical, dental, and vision insurance - 100% paid for by CoreWeave - Company-paid Life Insurance - Voluntary supplemental life insurance - Short and long-term disability insurance - Flexible Spending Account - Health Savings Account - Tuition Reimbursement - Ability to Participate in Employee Stock Purchase Program (ESPP) - Mental Wellness Benefits through Spring Health - Family-Forming support provided by Carrot - Paid Parental Leave - Flexible, full-service childcare support with Kinside - 401(k) with a generous employer match - Flexible PTO - Catered lunch each day in our office and data center locations - A casual work environment - A work culture focused on innovative disruption Our Workplace While we prioritize a hybrid work environment, remote work may be considered for candidates located more than 30 miles from an office, based on role requirements for specialized skill sets. New hires will be invited to attend onboarding at one of our hubs within their first month. Teams also gather quarterly to support collaboration. California Consumer Privacy Act - California applicants only CoreWeave is an equal opportunity employer, committed to fostering an inclusive and supportive workplace. All qualified applicants and candidates will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information. As part of this commitment and consistent with the Americans with Disabilities Act (ADA), CoreWeave will ensure that qualified applicants and candidates with disabilities are provided reasonable accommodations for the hiring process, unless such accommodation would cause an undue hardship. If reasonable accommodation is needed, please contact: careers@coreweave.com. Export Control Compliance This position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. CoreWeave may, for legitimate business reasons, decline to pursue any export licensing process.

Lead the development of identity management products, design core functionalities, and collaborate with teams to ensure technical excellence while managing digital risk through effective identity integration and controls.