Performance Fitter Jobs

About Us: AI needs a new infrastructure layer. We're building it at Modal. Every era of computing brought new workloads that previous infrastructure couldn't support: mainframes, databases, and the cloud. Each time, the company that rebuilt the layer underneath defined the decade. AI is no different, except it touches everything instead of one slice, and the window to build the layer underneath it is open right now. Our customers include category-defining companies like Lovable , Ramp , Cognition, DoorDash, and Suno. They rely on Modal for instant GPU access, sub-second container starts, and native storage, so it's simple to serve low-latency inference, fine-tune models, and access production-ready sandboxes at scale. We recently raised a $355M Series C at a $4.65B valuation, led by General Catalyst and Redpoint Ventures. We've crossed $300M+ ARR and grown fivefold since September. Our team includes creators of popular open-source projects (e.g., Seaborn , Luig i ), academic researchers, international olympiad medalists, and experienced engineering and product leaders with decades of experience. The Role: We are looking for strong engineers with experience in making ML systems performant at scale. If you are interested in contributing to open-source projects and Modal’s container runtime to push language and diffusion models towards higher throughput and lower latency, we’d love to hear from you! Requirements: 5+ years of experience writing high-quality, high-performance code. Experience working with torch, high-level ML frameworks, and inference engines (vLLM or TensorRT). Familiarity with Nvidia GPU architecture and CUDA. Experience with ML performance engineering (tell us a story about boosting GPU performance — debugging SM occupancy issues, rewriting an algorithm to be compute-bound, eliminating host overhead, etc). Nice-to-have: familiarity with low-level operating system foundations (Linux kernel, file systems, containers, etc).

We’re looking for a Senior Staff Software Engineer with deep experience in GenAI/ML to join Datadog’s Application Performance Monitoring (APM) team. APM is a product which provides deep visibility into applications, enabling users to identify performance bottlenecks, troubleshoot issues, and optimize services. With distributed tracing, profiling, out-of-the-box dashboards, and seamless correlation with other telemetry data, Datadog APM provides some of the deepest and most structured visibility into the health and performance of applications. This context sets us up for an opportunity to be the world leaders in agentic investigations and incident troubleshooting. You’ll act as a technical leader within the APM group, focused on agentic workflows. You’ll lead efforts to design, train, evaluate, and deploy GenAI/ML models at scale. We’re looking for a product-minded ML engineer with strong technical expertise, excellent communication skills, and a track record of driving impactful initiatives end to end. At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You’ll Do: Serve as the technical owner for GenAI initiatives within APM, leading design, development, and deployment of ML/AI-powered features across multiple teams. Guide long-term strategy and technical direction for GenAI workflows across APM and related products. Build and benchmark GenAI/ML models using state-of-the-art techniques. Contribute to Datadog’s broader senior engineering community through thought leadership and collaboration on company-wide initiatives. Collaborate with cross-functional teams to build automated investigation and triaging tools. Influence product direction by bringing a strong product mindset to your work, always advocating for the end user. Guide teams through ambiguity, sc

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Manager, Customer Performance, Brand Overview Mastercard operates the world’s fastest payment processing network, connecting consumers, financial institutions, merchants, governments, and businesses in more than 210 countries and territories. Every day, everywhere, we use our technology and expertise to make payments safe, simple and smart. We know safety and security are the top priorities of our customers, cardholders and partners, so we won’t stand still in developing new and better ways to keep payments safe. Do you have experience managing investigations, risk, compliance, audit, merchant monitoring, or brand protection processes? • Do you have strong knowledge of investigative case management, referral intake, evidence review, customer response evaluation, and assessment support? • Are you a people leader with sound judgment, stakeholder management, and program execution skills? • Are you collaborative, detail-oriented, and able to manage a global investigations function that complements operations, enablement, and governance routines? Mastercard’s Franchise Brand Performance Team advances ecosystem health and profitability by engaging our customers to optimize performance and to enhance the strength of our brand, acceptance network, and data. Role • Ensure investigations are

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Analyst, Customer Performance, Brand-1 Overview Mastercard operates the world’s fastest payment processing network, connecting consumers, financial institutions, merchants, governments, and businesses in more than 210 countries and territories. Every day, everywhere, we use our technology and expertise to make payments safe, simple and smart. We know safety and security are the top priorities of our customers, cardholders and partners, so we won’t stand still in developing new and better ways to keep payments safe. • Do you have experience conducting investigations, reviewing evidence, and documenting case outcomes? • Do you have knowledge of merchant onboarding, monitoring, customer response review, and potential Mastercard Standards violations? • Are you a high performer with strong analytical, documentation, and project management skills? • Are you collaborative, detail-oriented, and able to support credible investigations in a fast-paced environment? Mastercard’s Franchise Brand Performance Team advances ecosystem health and profitability by engaging our customers to optimize performance and to enhance the strength of our brand, acceptance network, and data. Role • Preserve the integrity of the Mastercard brand by conducting investigative case work under the Business Risk Assess

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Lead, Customer Performance Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all. Overview The Lead, Customer Performance will support the newly formed Customer Care Performance Team (CCPT), within Technology and LAC Region. This role will be a key member of the CCPT LAC team and will support the market in positioning Mastercard as a preferred technology partner, sharing Mastercard’s vision, with regards to technology innovation, culture of security and operational excellence. Role: • Monitor product health and performance trends by region, division, and customer, and collaborate with stakeholders to address any gaps or issues that could impact customer satisfaction. • Facilitate timely and accura

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. Position Summary Revenue Integrity is seeking a Lead Director, Informatics (Performance Reporting & Insights) to lead the development and delivery of enterprise risk adjustment analytics and business intelligence solutions. This role transforms complex clinical, operational, and risk adjustment data into actionable insights that will drive provider performance, program efficiency, and executive decision-making. This leader will be responsible for creating action through data storytelling, advanced visualizations, and helping to advance the organization’s reporting strategy through AI and automation. This This role is customer-facing and will provide thought leadership and vision partnership to areas such as Market leads, Finance, Clinical, and Operational partners. The leader must also provide technical guidance to staff on BI tool input modeling and calculations. Key Responsibilities Risk Adjustment Performance Reporting Accountable for timely and accurate sharing of risk adjustment KPIs, trends, and performance drivers at a market, plan, and provider level through dashboards and reporting tools Quantify drivers of risk movement and surface those insights to business leaders for action Assess performance against operational and organizational objectives, including appropriate benchmarking and goal setting <

NVIDIA's invention of the GPU in 1999 sparked the growth of the PC gaming market, redefined modern computer graphics, and revolutionized parallel computing. More recently, GPU deep learning ignited modern AI — the next era of computing — with the GPU acting as the brain of computers, robots, and self-driving cars that can perceive and understand the world. Today, we are increasingly known as “the AI computing company”. We are looking to grow our company, and grow our teams with the smartest people in the world. What you’ll be doing: You will work with ground breaking technologies for the Tegra SoC and various NVIDIA embedded platforms Implement power and thermal management software features in Linux Kernel and user space Collaborate with power architects, hardware and software engineers on platform power estimation and optimization Optimize the software stack to improve performance, efficiency, and responsiveness for edge AI and robotics use cases. Focus on improving compute and memory utilization, reducing latency and power consumption, and tuning system-level performance to deliver reliable and scalable AI workloads across demanding real-world edge environments. What we need to see: MS in CS, CE, EE, Systems Engineering or related software/hardware engineering major, or equivalent experience 8&#43; years of software development experience with a significant focus on Linux Excellent C programming/debugging skills within Linux kernel and user space software Background with working on embedded systems and ARM processor specific System-level debugging experience and problem-solving skills Excellent communication skills Ways to stand out from the crowd: Understanding of the Linux power and thermal management features (schedule

Our Purpose Mastercard powers economies and empowers people in 200&#43; countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Director, Customer Performance Who is Mastercard? Mastercard is a global technology company in the payments industry, operating as the world’s fastest payment processing network. Our mission is to connect and power an inclusive, digital economy that benefits consumers, financial institutions, merchants, governments and businesses in more than 210 countries and territories. Safety and security are top priorities and we continually find opportunities to make transactions safe, simple, smart, and accessible. Overview: Franchise is core to all Mastercard business. Franchise enables business growth and value, fostering interactions with customers which provides ongoing trust and confidence in the evolving payments and data driven ecosystem. This role enables high-risk acquirers to participate in the Mastercard global ecosystem by engaging directly with customers to improve ecosystem performance and strengthen participants’ understanding of business requirements. About the Role: With the growth of merchant fraud, acquirers must strengthen their screening of new merchants, as well as closely monitor new risk signals in transaction data, while ensuring their merchants remain compliant with local laws and Mastercard standards. To help acquirers achieve this, the Franchise team is looking for a fraud

Reolink , a leader in intelligent visual technology for homes and businesses, was founded in 2009 by a group of engineers with a strong commitment to and passion for smarter security solutions. Our products are now trusted by millions of users across more than 110 countries and regions worldwide. Building on this trust, we continue expanding our presence and bringing our innovations to more markets around the globe. Reolink remains committed to delivering advanced, reliable, and user‑centric solutions that empower people to protect what matters most. Performance Marketing Specialist (Google & Video Focus) 5 Work Days Per Week Office Near Tai Seng MRT, Singapore Medical Benefits Provided Entitled to Yearly Bonus & Performance Bonus Requirements Education: Bachelor's degree or higher, preferably in Marketing, Advertising, Statistics, or a related discipline. Experience: Minimum 5 years of hands‑on experience in advertising operations, with a heavy, specialized focus on Google ecosystem advertising (Search, Performance Max, and YouTube) . Experience in 3C, e‑commerce, internet products, or cross‑border advertising is a strong advantage. Platform Proficiency: Core Expertise: Deep, hands-on mastery of Google Ads —specifically advanced Search campaign architectures, Performance Max (PMax) asset group optimization, and YouTube video ad funnels. Secondary Platforms: Familiarity with TikTok Ads, Ocean Engine, and a minor/supporting working knowledge of Meta Ads. Analytical Skills: Strong data analysis skills with advanced familiarity with Excel/Google Sheets, attribution tracking, and analytics tools to evaluate multi-channel performance. Mindset & Execution: Strong strategic thinking and results‑oriented mindset, with the ability to manage multiple complex campaigns and projects in a fast‑paced environment. Collaboration: Excellent communication and collaboration skills. Experience in team leadership or agency management is an advantage. Key Responsi

CLEAR is building THE secure identity company of the future. Our mission is to make experiences safer and easier—physically and digitally. With more than 43 million Members and a growing network of partners across the world, CLEAR's secure identity platform is transforming the way people live, work, and travel. Whether it’s at the airport, stadium, or throughout your everyday life, CLEAR unlocks the magic of frictionless experiences. The Director, Sales Performance & Enablement will own the strategy and systems that drive sales performance across CLEAR’s airport network, translating commercial priorities into playbooks, tools, incentives, and field execution that improve conversion and sales volume. Reporting to the VP, Sales & Service, you’ll combine data-driven strategy with hands-on field leadership to identify what works, test it quickly, and scale it across the network. What you'll do: Own CLEAR’s airport sales execution strategy, developing scalable playbooks, tools, quality standards, and performance frameworks that drive conversion and sales volume across the network Analyze sales performance, market dynamics, and field insights to set network targets, identify performance opportunities, prioritize investment, and translate data into clear actions for the field Build a rigorous test-and-learn engine across high-volume airports, rapidly piloting sales approaches, scripts, tools, and incentives and using results to determine what scales network-wide Partner with Field Operations leaders to embed sales standards, coaching rhythms, and performance cadences into existing station operations, driving consistent execution through influence and shared accountability Lead a high-performing team focused on sales performance intelligence and field quality, while partnering with People and Finance to design commission structures, incentives, and recognition programs that reinforce the right front-line behaviors How you'll measure success: Network-wi

CLEAR is building THE secure identity company of the future. Our mission is to make experiences safer and easier—physically and digitally. With more than 43 million Members and a growing network of partners across the world, CLEAR's secure identity platform is transforming the way people live, work, and travel. Whether it’s at the airport, stadium, or throughout your everyday life, CLEAR unlocks the magic of frictionless experiences. The VP, Performance Marketing will build and scale CLEAR’s customer acquisition and retention strategy for our business, owning performance across paid media, search and emerging discovery, web, CRM and lifecycle, and strategic partnerships. As AI reshapes how travelers discover, evaluate, and purchase products, you’ll define the next generation of CLEAR’s performance marketing playbook – reaching travelers long before they arrive at the airport and turning them into long-term Members. What you'll do: Own CLEAR’s performance marketing strategy and investment portfolio across paid media, search, web, CRM and lifecycle, and emerging channels – allocating resources based on incrementality, customer economics, and measurable business impact. Build the next generation of traveler discovery for CLEAR across traditional search, AI assistants, communities, travel media, and emerging platforms; establish how we measure and grow CLEAR’s visibility, consideration, and recommendation as consumer behavior evolves. Own the Member lifecycle from acquisition through renewal and winback, building personalized journeys, offers, and experiences that increase engagement, retention, and adoption of CLEAR’s growing portfolio of travel products and services. Grow CLEAR’s strategic travel partnerships, including credit card, airline, and travel partners, while developing new acquisition opportunities across travel media networks and other first-party ecosystems that reach consumers throughout their journey. Build a rigorous performance and experimentati

About the Team The Support Quality team’s vision is to “Provide teammates, team leads, and AI Agents with actionable feedback on 100% of cases so they can get 1% better every day. Deliver actionable business insight to wider S&O to help improve business policy and processes / Product teams to increase our customer experience.” About the Role You will report to the Director, Teammate Enablement, in our Customer Experience organization. The Teammate Enablement Team is responsible for ensuring that our Teammates have the resources (tooling, quality measurements, and knowledge base) and training to effectively and empathetically support DoorDash’s customers. Where opportunities are identified, we drive feedback to our business partners in order to empower Teammates to be 1% better every day for our customers. The team’s primary role will be to: i) build automated QA metrics that have high coverage, precision, and low false-positive rates; ii) support all manual QA efforts, including incubation and scale-up of new measurements; iii) deliver actionable insights to our partner teams to help improve the processes and policies on our support experience, as well as insights for our vendors to drive better agent performance management; and iv) manage our QA tech providers to ensure they deliver against our ambitious roadmap. This is a leadership role, with the expectation of managing the priorities of a small team while remaining accountable to key initiatives oneself. You’re excited about this opportunity because you will… Lead a small team centered around identifying and fixing top opportunities in our quality assurance programs that support customer service at DoorDash. Design, launch, and evolve our conversational intelligence program, utilizing AI technology to monitor, measure, and drive continuous improvements in our customer service interactions. Drive the strategy of our quality assurance program, identifying the right strategies to balance manual quality assuranc

About the Team The B2B Marketing team is a small, high-impact group focused on driving lead generation across multiple DoorDash business lines, including Restaurants (U.S. & Canada) and New Verticals (Alcohol, Flowers, and more). We’re a fast-growing team where you’ll have the opportunity to shape our marketing approach, work closely with global stakeholders, and grow as the team expands. About the Role We’re looking for a performance-driven Paid Search specialist to help scale our B2B acquisition efforts across the U.S. and Canada. In this role, you’ll own the end-to-end execution of Paid Search campaigns, managing performance, identifying growth opportunities, and driving efficiency across a multi-million dollar budget. You’ll work closely with U.S.-based teams and platform partners like Google and Microsoft. You will report directly to our local Manager, B2B Performance Marketing. You’re excited about this opportunity because you will… Ownership: End-to-end Paid Search execution aligned to B2B growth goals (lead quality, efficiency, and scale) Campaigns: Build, launch, and optimize Search and Performance Max campaigns across the U.S. and Canada Performance: Monitor and improve campaign performance against core KPIs (e.g., lead generation, efficiency, and return) Optimization: Drive continuous improvements through testing, automation, and data analysis Insights: Translate performance data into clear insights and recommendations for cross-functional partners Stakeholder collaboration: Partner with internal teams and external platforms (Google, Microsoft) to unlock growth opportunities We’re excited about you because… You have 3–5+ years of experience in performance marketing, with a focus on Paid Search You have hands-on experience managing Google Ads and/or Microsoft Ads campaigns You’re comfortable working with data and using it to make decisions and drive improvements You can clearly communicate insights and recommendations to stakeholders You’re

We're looking for a Principal Engineer to join our CSP Engagements team as the technical focal point for end-to-end performance, working directly with engineering teams of key CSP/hyperscale customers to ensure they achieve various performance targets on NVIDIA platforms. In this role, you will augment NVIDIA's performance and benchmark teams with a dedicated CSP-facing focus. You will drive work streams with CSP engineering teams to build shared understanding of platform performance characteristics, gather and incorporate their workload-specific feedback into NVIDIA's optimization priorities, and validate that performance targets are met in customer-representative configurations. Your cross-CSP visibility enables you to identify patterns and drive systemic improvements in documentation, configuration guidance, and tooling. What you'll be doing: Drive performance characterization work streams with engineering teams of key CSP/hyperscale customers — ensuring they understand platform performance expectations, profiling methodology, and tuning options for their specific workloads Gather and synthesize CSP performance feedback — identify gaps between expected and actual throughput, and champion optimization priorities back into NVIDIA's CUDA, NCCL, driver, and firmware teams Ensure key open-source performance and stress tools (e.g., STREAM, GPU Burn, GPU BLAST) are updated and validated for the latest NVIDIA rack-scale systems, GPU architectures, and CPU platforms — so customers and internal teams have reliable baseline measurements from day one Work closely with CSPs to ensure their own performance and validation tooling reflects the latest GPU capabilities, memory hierarchy changes, and platform-specific tuning parameters Conduct cross-CSP performance comparison and pattern analysis — identify configuration, software, or workload differences that explai

NVIDIA 2027 New College Graduate: Deep Learning and High-Performance Computing Engineering - China — 3 Locations. Apply via Workday.