Performance Fitter in United States

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview The Commercial Scaled Intelligence (CSI) team is an AI-first team dedicated to delivering actionable commercial insights and scalable automation to drive revenue growth and operational efficiency across the company. The team focuses on intelligence generation, predictive analytics, and workflow automation to enable data-driven decision-making and optimize commercial performance. As an Ads AI Analytics Lead II, you will own the intelligence behind our Ads agents. You will design the Ads semantic/context layer and build vertical AI agents that analyze campaigns, diagnose performance, and recommend actions that improve ROAS, pacing, and partner outcomes. You will partner with Ads GTM, Product, Data Science, and Engineering to ship production agents with measurable lift. About the Job Define Ads ontologies and metrics for campaigns, budgets, bids

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview Instacart’s Strategic Finance team partners closely with leaders across the business to drive clarity, rigor, and results. Within this group, the Retailer Pod supports our retailer partnerships by shaping deal strategy, building robust financial models, and guiding decisions that help Instacart and our partners grow together. We are seeking a Senior Financial Analyst to accelerate retailer deal flow and portfolio performance. You will join a high-impact, collaborative pod within Strategic Finance, working daily with Retail Partnerships, Deal Desk, Legal, Revenue Operations, Data Science, and Accounting. In this role, you’ll own end-to-end financial analysis for complex commercial deals, build scalable forecasting frameworks, and present actionable insights that influence decisions at the highest levels. This is an opportunity to roll up your

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview Instacart’s Marketing Data Science and Analytics team partners across Marketing, Strategic Finance, and Product to power data-driven growth. As a Senior Marketing Decision Scientist II, you will shape how we measure, forecast, and optimize marketing performance across channels, helping Instacart make smarter investment decisions and accelerate customer acquisition and retention. This is a high-impact, high-visibility role on a small, focused team where you will own complex, zero-to-one measurement initiatives and scale proven solutions. You will collaborate closely with channel marketers, growth leaders, finance partners, and data engineers to deliver models and experimentation frameworks that inform multi-million-dollar decisions. If you thrive in a fast-paced environment that still moves like a startup—and you love rolling up your sleeves to turn ambiguo

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview Are you passionate about technology and ready to dive into the world of Site Reliability Engineering? We are looking for enthusiastic individuals to join our team as Site Reliability Engineer II, where you'll play a crucial role in ensuring the reliability and performance of our platform. This is a top-notch opportunity to learn from skilled engineers and contribute to solving complex technical challenges. You will be involved in monitoring systems, responding to incidents, and developing automation to streamline operations. We are looking for someone eager to grow their skills, learn new technologies, and contribute to a culture of reliability. The Site Reliability Engineering (SRE) team integrates software and systems engineering to design and manage large-scale, distributed, and fault-tolerant systems. The team is responsible for ensuring high reliabili

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: The Growth Marketing team sits at the intersection of marketing, data, and technology, driving scalable acquisition and measurable business impact across Airbnb. Our work is critical to driving the company’s top line growth. We are looking for a highly strategic and technically savvy Growth Marketing Lead to own Host SEM, the supply side of our Paid Search program. You will be a channel expert, thought partner, and trusted advisor to leaders and business partners across Product, Data Science, Engineering, Supply, FP&A, Brand, and Creative teams to shape strategy and exceed ambitious KPI goals. The Difference You Will Make: You will lead end-to-end strategy and execution of Airbnb's Global Host SEM program, driving efficient host acquisition and long-term supply growth. You'll lead large-scale SEM investments across major search platforms, identify new growth opportunities, design and scale experimentation to inform investment decisions, and optimize performance to maximize business impact and ROI. You’ll collaborate cross-functionally to drive scalable solutions, influence roadmaps, and communicate data-driven recommendations to senior leadership that shape key business decisions. A Typical Day: Lead Airbnb's global Host SEM program across major search platforms (Google, Bing, and emerging channels) to drive efficient host acquisition and long-term supply growth. Develop and execute the strategic roadmap for Host SEM, aligning investment strategy and budget allocation with global and regional business priorities. Design, execute, and scale experiments across bi

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Airbnb is redefining the world's approach to accommodation and travel. We are creating highly local, personal and authentic experiences for our host and guest community around the world. Our platform connects millions of people a year and furthers our mission to create a world where anyone can belong anywhere. To power the global Airbnb community, we are building a world-class payments platform - one that currently supports 191 countries, 63 currencies, connects dozens of payment providers and banks, and processes billions of dollars per year for all of Airbnb’s business units. As the platform grows, we’ll be adding new payment partners, establishing licensed payments companies around the world, and building innovative payment experiences and financial products for our guests and hosts. Our goal? To create a future where transparent, simple, and familiar payment solutions can empower people, entrepreneurs and communities on our global marketplace. The Difference You Will Make: Airbnb is seeking an experienced and strategic Payment Partnerships Manager to drive the vision, execution, and ongoing performance of our partner network supporting how we pay out to our global host community across 200+ markets. Reporting to the Head of Payment Partnerships, this role is pivotal in managing the partnerships that ensure our hosts are paid reliably, efficiently, compliantly and in alignment with our growth and platform goals. You will lead business development, deal negotiation, and strategic relationship management for a portfolio of high-value payment partners. With a focus on impact a

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: As a Senior Machine Learning Engineer, you will be a part of Airbnb's innovative pricing guidance team. Our team is a diverse group of engineers, data scientists, and product managers who are dedicated to creating optimal pricing models for our hosts. We work closely with product engineers, designers, and other cross-functional partners to ensure our models are effective, user-friendly, and contribute to the success of our hosts. ners The Difference You Will Make: In this role, you will be responsible for developing and refining machine learning models for pricing recommendations, with a particular focus on reinforcement learning techniques. Success in this role will be measured by the accuracy and effectiveness of these models, and their impact on host success rates. You will also be involved in project planning and prioritization, ensuring that our team's efforts align with Airbnb's broader strategic goals. A Typical Day: Collaborating with data scientists and product managers to understand project requirements and desired outcomes Developing, testing, and refining machine learning models, particularly reinforcement learning models, for pricing recommendations Analyzing model performance and making necessary adjustments Presenting findings and progress updates to team members and stakeholders Working with product engineers and designers to integrate models into user-friendly tools for hosts Your Expertise: 5+ years of experience in machine learning engineering Proven experience in developing and implementing machine learning models, preferably reinforcement learning mo

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Machine Learning and Artificial Intelligence are at the heart of the Airbnb product. From Trust to Payments, and from Customer Service to Marketing we rely on ML to ensure that guests and hosts have the best possible experience with Airbnb. The CS AI product team is responsible for driving CSxAI (Customer Support x Artificial Intelligence) initiatives by adopting the Generative AI technologies to enable an intelligent, scalable and exceptional service experience. The team develops and enhances various AI models, ML services and tools including LLM fine-tuning, alignment and optimization, RAG/Search, LLM evaluation and testing automation, feedback-based learning and guardrail for a wide range of applications in Airbnb. What you will do: As a principal machine learning engineer, you will be responsible for fine-tuning state-of-the-art LLMs for diverse use cases while optimizing models for high-performance deployment on Airbnb’s ML Infrastructure. You will partner with product managers, software engineers, data scientists and operation teams to brainstorm, design and develop AI products such as AI Assistant, Autonomous agent, recommendation, travel planning, and many more products that make meaningful

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Our mission at Marketing Technology is to provide a state-of-the-art platform and measurement capabilities to enable marketing and product teams to engage with our customers effectively. Every day, millions of Airbnb customers are reached via our streamlined platform over comprehensive marketing channels such as Email, Push, SMS, Google Ads, Facebook Ads etc. We deliver substantial business impact by enabling numerous stakeholders across the company, including Marketing (Brand and Performance), Guest, Host, Airbnb Org, Policy, and more. The Difference You Will Make: As a Staff Software Engineer on the Content Platform team, you'll provide hands-on technical leadership to build an agentic platform to quickly create onsite (airbnb.com) and offsite (emails, push notifications) content in a no-code manner. We are at an exciting inflection point. transforming the platform into an AI-driven system that can turn a marketing brief into a fully realized campaign in minutes, not months. This full stack team owns a complex CMS platform, no-code tool, rendering infrastructure and now an agentic layer, all at scale where our content is consumed by millions of Airbnb users daily. You'll work alongside a team of talented software engineers to build technology that h

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Our web and API surfaces handle requests from guests and hosts alongside a growing volume of automated agents: AI assistants, crawlers, and scrapers. We build the systems that bring clarity to this traffic, combining in-house ML and vendor signals to decide in real time how to serve billions of daily requests. Anti-bot and anti-scraping detection is our most adversarial mandate, but the wider challenge is full traffic classification: building evaluation frameworks that tell legitimate automation apart from abusive actors, so high-stakes decisions hold up across the fleet. The Difference You Will Make: You will architect and maintain Airbnb’s end-to-end traffic classification ML systems, balancing high-performance model deployment with rigorous offline data pipelines. Success is measured by your ability to harden edge-traffic policies—targeting reduced bot-incident MTTM—and by establishing rigorous evaluation practices that ensure foundational signal accuracy and evasion-resistance across the fleet. A Typical Day: Own the complete lifecycle of traffic-scoring models, from problem framing to real-time deployment, managing the adversarial feedback loop to ensure high evasion-resistance and directly drive reductions in bot-incident MTTM. Architect robust offline-to-online pipelines that produce certified source-of-truth datasets, establishing rigorous evaluation frameworks—such as stratified benchmarks and leakage-prevention checks—to ensure every model improvement is empirically measurable and defensible. Execute model optimization within strict millisecond latency budgets at the

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: The AirCover team is charged with managing and growing the AirCover business inside of Airbnb. We have a responsibility to our community of Hosts and guests to be there when things don’t go exactly as planned with their reservations. We have a lot of work to do in the coming years and we are looking for someone who will help us manage all of the things that need to be done to deliver best-in-class services to our community. The Difference You Will Make: As a Vendor Manager focused on operational vendor support, you will own the end-to-end management and performance of a portfolio of third-party partners that deliver critical operational services (e.g., third-party claims adjusting). Applying deep expertise in vendor management, SLA frameworks, and operational risk, you will exercise independent judgment across multiple sources of data to structure trade-off decisions, resolve compl

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Hotels represent one of Airbnb's most exciting growth frontiers, bringing professional hospitality partners onto the platform and making it possible for guests to choose Airbnb for every kind of trip. By ensuring a robust and exceptional hotel supply, the Revenue Operations team plays a critical role in shaping Airbnb's future and delivering on its mission to create a world where anyone can belong anywhere. The Revenue Operations team partners across the company to build world-class Sales, Onboarding, and Account Management capabilities. We support partners across the full journey – from identifying and acquiring the right supply in the right markets, to seamless onboarding and integration, to the tools, programs, and insights that help partners grow and succeed on our platform. We own critical growth levers that ladder directly into business goals, and we build the central infrastructure that powers in-market execution for field teams worldwide. The Difference You Will Make: Acquiring the right hotels in the right markets is one of the most critical drivers of Hotels growth at Airbnb – and this role sits at the center of that effort. As Sr. Lead, Revenue Operations – Hotels Acquisition, you will own the global acquisition operations strategy, partnering with regional sales leaders, marketing, product, and central analytics teams to drive funnel performance, optimize conversion, and scale what works across markets. You will serve as the global subject matter expert on hotel acquisition levers — bringing strategic clarity to how and where we acquire supply, translat

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone’s reach while doing the most important work of your career. About the team Stripe’s global demand campaigns team delivers marketing campaigns that drive awareness and engagement for our audiences, solutions, and products worldwide. Working closely with sales and marketing teams, our campaigns support Stripe’s larger business objectives and deliver impact. We build, deliver, monitor, and evolve campaign delivery across a broad suite of content, tactics, and channels. Using a broad suite of metrics, we continuously measure our work and refine our strategies to improve outreach, enhance the customer journey, and support revenue growth for the organization. What you’ll do In this role, you'll quarterback the integrated campaign strategies, plans, and playbooks focused on Stripe’s stablecoin and crypto products (including Bridge). You'll champion the needs of the core audiences for this product area, holding deep market and audience insight and direct business accountability. You'll lead a large, global, cross-functional workstream to build campaign strategies and content, then work with regional teams to craft local strategies and to deliver activations through integrated channels. You'll capture performance against all of your efforts, analyze results, and share learnings to drive continuous improvement and impact. Ultimately, you'll be accountable for acquisition, engagement, and pipeline growth. The ideal candidate Excels in leading and driving large, complex, global campaigns or programs Has strong analytics skills

About the team Platform Partnerships builds and grows the relationships that extend OpenAI products through the world’s most important technology platforms. The team works across Product, Engineering, Research, Go-to-Market, Legal, Finance, Marketing, Policy, and Operations to turn partner opportunities into durable product experiences and business outcomes. We are a small team working on opportunities that rarely arrive with a playbook. We set the strategy, make the tradeoffs, and stay close to execution through launch and scale. About the role We’re hiring a Strategic Partner Manager to own and drive the expansion of a portfolio of OpenAI’s most strategic platform partnerships. You will treat each partnership as a business: set the expansion thesis, align joint product roadmaps, structure commercial opportunities, and translate shared ambition into measurable adoption, usage, revenue, distribution, and product impact. This is a senior individual-contributor role with full-lifecycle ownership—from strategy and negotiation through integration, launch, performance, expansion, and renewal. It is a 0-to-1 builder role, not a coordination role. You will create clarity where the operating model is still emerging, make sound decisions with incomplete information, and step into the details required to move the work forward. The right person can move fluidly between a multi-year partnership strategy and the immediate product, commercial, or operating blocker in front of the team. You will build trusted relationships at the executive and working levels while representing OpenAI’s priorities with clarity and thoughtful pushback. What success looks like Each priority partner has a clear expansion thesis, joint roadmap, governance model, and measurable outcomes. High-priority product integrations and go-to-market initiatives launch with clear ownership, strong readiness, and fewer unresolved dependencies. Partnerships show measurable growth across the outcomes that matter for t

About Taskrabbit: Taskrabbit is a marketplace platform that conveniently connects people with Taskers to handle everyday home to-do’s, such as furniture assembly, handyman work, moving help, and much more. At Taskrabbit, we want to transform lives one task at a time. As a company we celebrate innovation, inclusion and hard work. Our culture is collaborative, pragmatic, and fast-paced. We’re looking for talented, entrepreneurially minded and data-driven people who also have a passion for helping people do what they love. Together with IKEA, we’re creating more opportunities for people to earn a consistent, meaningful income on their own terms by building lasting relationships with clients in communities around the world. Taskrabbit is a hybrid company with employees distributed across the US and EU and a Built In — Best Places to Work (2022, 2023, 2024, 2025) continually ranked across multiple national and regional categories. Join us at Taskrabbit, where your work will be meaningful, your ideas valued, and your potential unleashed! Prior to applying please note: W e are currently unable to provide visa sponsorship for this position (including H-1B, OPT, or other employment-based visas). Candidates must be legally authorized to work in the United States without employer sponsorship now or in the future. This role is hybrid requiring 2 days in office at our San Francisco hub every Tuesday & Wednesday (located at 130 Sutter St). About the Role: We're seeking a Senior Software Engineer to join our Post-Booking team, someone who doesn't just build, but raises the quality bar across our entire ecosystem. You'll be instrumental in shaping the consumer experience following the initial booking process. Your work will focus on building new features to improve the customer experience through high-performance Node.js services and AI-driven enhancements, as well as critical replatforming work to modernize our microservice infrastructure. Key Responsibil