Senior Platform Ai Engineer Jobs

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

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

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

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. Roblox’s database team develops the next-generation, multi-tenant database platform that elastically scales and underpins every online data workload at Roblox. As a senior engineer on the database team, you will shape the architecture, build and launch critical database capabilities that keep our services fast, reliable and efficient at global scale. You will report to the Technical Director for Storage. You will: Design and implement new engine features —indexing, storage formats, WAL and replication protocols, sharding, and query-planner enhancements—that push latency, throughput, and availability boundaries. Evolve the control plane to deliver elastic scaling, autonomous healing, and zero-downtime schema or tenant moves across global regions. Profile and optimize critical code paths using kernel-level tracing and advanced performance tooling; drive systematic tail-latency reductions. Establish engineering best practices by leading design reviews, performance benchmarks, failure drills, and post-incident retrospectives. Automate everything : develop frameworks for testing, CI/CD, rollout safety, observability, and autoscaling so that the platform operates hands-off at sc

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise. Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com. Why We’re Hiring We are looking for a Senior Director, Product Management – ID Activation to lead the strategy and development of identity-driven audience activation capabilities across the advertising ecosystem. You will own the end-to-end product vision for audience onboarding, identity resolution, data syndication, and partner activation workflows. Your work will help make audience delivery more scalable, interoperable, privacy-conscious, and measurable across major media platforms. This is an opportunity to shape products at the intersection of AdTech, identity, data, and media while leading a team and influencing partners across WPP. What You’ll Be Doing Define Product Strategy and Roadmaps Set the product vision, strategy, and multi-year roadmap for ID Activation capabilities. Identify opportunities to expand activation through new identity providers, destinations, channels, and strategic integrations. Build business cases and prioritize investments based on customer demand, revenue potential, technical feasibility, and strategic value. Translate market, partner, and client needs into clea

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise. Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com. Why we're hiring: We are expanding our data science capability to develop a state-of-the-art system for estimating and understanding the size and characteristics of marketing and advertising audiences. This role offers the opportunity to apply Bayesian statistics, advanced mathematical thinking and production-quality engineering to complex problems with meaningful industry impact. What You’ll Be Doing Develop and implement Bayesian statistical models and other advanced analytical methods to estimate audience sizes and characteristics. Translate complex mathematical and statistical questions into robust, explainable data-driven solutions. Build and maintain production-ready Python packages, including unit tests and clear technical documentation. Collaborate with data scientists, engineers and other specialists to design, build and refine analytical solutions. Work with diverse data formats and help maintain data quality and integrity throughout the analytics pipeline. Use cloud computing resources to support scalable data processing and model deployment. Contribute to Git repositories, code reviews and

Who are we? FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever- evolving cryptocurrency landscape. The Role We’re looking for a Senior Trading Systems Developer with strong experience in low-latency Rust and/or Java to architect and build our electronic trading execution platform. This platform will be central to supporting complex electronic trading algos, such as automated market making on exchanges and quant trading strategies. You will work on the core components that sit on the hot path of our execution stack — including market-data ingestion, order management, risk checks, session control, and high-throughput venue connectivity. You’ll be designing and developing scalable, low-latency components that are resilient under heavy load and tightly integrated with our execution stack and internal trading infrastructure. What You’ll Do Build scalable services using Rust and Java, optimized for latency and throughput. Responsible for development of low latency services on Aeron, including OMS/EMS components, market-data pipelines, and venue gateway connectivity. Integrate with exchange APIs using FIX, REST, WebSocket, and venue-specific protocols. Model complex order lifecycles, state machines, and execution workflows into resilient, observable, fault-tolerant services. Design and maintain SBE message schemas and high-throughput message-bus communication o

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise. Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com. Why we’re hiring We’re growing the data engineering capability behind ad-tech solutions that process large-scale, real-time audience data. In this role, you’ll take deep technical ownership of the data model that supports targeting and measurement decisions for advertisers at scale. You’ll help evolve a complex, interconnected data platform while working with modern distributed processing technologies and a highly collaborative engineering team. Who you’ll be working with You’ll work closely with data engineers and colleagues across Quality Assurance, Analytics and connector teams. We value teamwork over ego, collaboration over competition, open and honest communication, strong opinions held with curiosity, and continuous improvement through kaizen. Our technology environment Scala-based backend services Google Cloud Platform (GCP) Apache Spark for large-scale distributed data processing Parquet and BigQuery Tyda, an open-source, automation-driven software development lifecycle process What you’ll do Own and evolve a core data model spanning input and output models, field types and partitioning strate

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise. Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com. This is a full-time position offered exclusively on a Contract of Employment (Umowa o Pracę) . Please note that this is a hybrid role , requiring employees to work from our Warsaw office (Centrum Koneser) at least 3 days per week . We are not considering fully remote or B2B arrangements for this position. We are seeking an exceptional Senior Data Scientist to join our highly skilled team in Warsaw. You will play a pivotal role in developing a state-of-the-art system that leverages Bayesian statistics and advanced theoretical concepts to estimate and understand the size of marketing and advertising audiences. You will thrive in a fast-paced, dynamic environment where objectives evolve rapidly and complex, abstract problems are the norm. If you are passionate about tackling challenging statistical and mathematical problems, and enjoy working collaboratively with other experts, we want to hear from you. Location Requirement This is a hybrid role based in Warsaw, Poland . Candidates must currently reside in Warsaw, Poland or be willing to relocate independently to Warsaw, as relocation suppo

About the Team We believe the only way to predict the future is to build it. Creating solutions to lead our company and our industry is what we do — on every project, every day. This is especially true in Fraud Operations, where we're constantly finding new ways to minimize and prevent fraudulent activity on the platform. Through continuous improvement and operational excellence, our Fraud Strategy and Operations team protects both the business and our customers from bad actors. About the Role As a Senior Associate in Fraud Operations, you'll help safeguard our platform through fraud detection and prevention. You'll scale reviews, build collaborative relationships with our outsourced operations partners(BPO), and optimize operational processes. You'll also drive performance management initiatives to help those partner teams meet and exceed performance standards. This role blends project management, quality analysis, and vendor relationship management, with hands-on casework along the way. You will report into the Associate Manager on our Fraud Partner Operations team in our Fraud Strategy and Operations organization. This position requires an in-office presence at the DoorDash corporate office in Tempe, and the employee must live within a commutable 50 miles from the office. In-office days are determined by the business and can change based on business needs. Connect with the recruiter to determine what the in-office requirement for this role is. You're excited about this opportunity because you will… Own the day-to-day health of fraud queues worked by our outsourced vendor partners(BPO), monitoring performance against key operational goals and driving improvement plans when queues fall short Lead quality review programs with vendor QA teams, using root-cause analysis to improve review accuracy and strengthen fraud detection and prevention Combat fraud using data-driven insights and daily performance reporting, with your work directly informing decisions made by lea

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. Job Description The Geometry Scalability team builds the systems that power both Avatars and Environments across Roblox. Our mission is to enable millions of developers to build large, high-fidelity worlds and multiplayer experiences that still run smoothly on phones and low-end devices. We’re the team that lets Roblox experiences evolve from simple platformers into massively multiplayer, open-world, AAA-quality games. This is a CEO-level priority: how Roblox “ages up” from kids’ games to experiences everyone wants to play, by making higher-fidelity avatars and environments performant at platform scale. You Will: Design and ship 3D engine systems for avatar and environment geometry, including mesh processing, level of detail, transcoding, streaming, runtime loading, and related performance systems. Partner closely with other teams (Rendering, Avatar, Studio) and external developers so that the features you build are directly usable to create amazing experiences. Profile and improve the performance of our game engine across a wide range of devices, with particular attention to mobile. Lead by example: drive projects end-to-end, mentor other engineers, and help set a high bar for technical qu

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. About the role We build the isolation layers that contain untrusted and semi-trusted code. You will design, build, and harden process sandboxes across one or more of Linux, macOS, and Windows, the last line of defense when something inside goes wrong. This is a deep systems role for someone who thinks in terms of attack surface, threat models, and the exact boundary between trusted and untrusted. You Will: Design and implement sandboxes using platform primitives: nsjail, seccomp-bpf, namespaces, cgroups, and Landlock on Linux; the Seatbelt (sandbox_init / SBPL) and related mechanisms on macOS; AppContainer, job objects, restricted tokens, and integrity levels on Windows. Define and lock down every communication path in and out of the sandbox: syscalls, IPC, shared memory, file descriptors, sockets, brokers, and minimize what each one exposes. Enumerate and reduce attack surface: kernel syscall surface, broker interfaces, device access, and side channels. Assume the code inside is hostile. Make deliberate engineering tradeoffs between isolation strength, performance, compatibility, and maintainability, and document the reasoning. Write threat models, review designs, and respond to sandbox es

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. Job Description The Geometry Scalability team builds the systems that power both Avatars and Environments across Roblox. Our mission is to enable millions of developers to build large, high-fidelity worlds and multiplayer experiences that still run smoothly on phones and low-end devices. We’re the team that lets Roblox experiences evolve from simple platformers into massively multiplayer, open-world, AAA-quality games. This is a CEO-level priority: how Roblox “ages up” from kids’ games to experiences everyone wants to play, by making higher-fidelity avatars and environments performant at platform scale. You Will: Design and ship 3D engine systems for avatar and environment geometry, including mesh processing, level of detail, transcoding, streaming, runtime loading, and related performance systems. Partner closely with other teams (Rendering, Avatar, Studio) and external developers so that the features you build are directly usable to create amazing experiences. Profile and improve the performance of our game engine across a wide range of devices, with particular attention to mobile. Lead by example: drive projects end-to-end, mentor other engineers, and help set a high bar for technical qu

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. Job Description The Geometry Scalability team builds the systems that power both Avatars and Environments across Roblox. Our mission is to enable millions of developers to build large, high-fidelity worlds and multiplayer experiences that still run smoothly on phones and low-end devices. We’re the team that lets Roblox experiences evolve from simple platformers into massively multiplayer, open-world, AAA-quality games. This is a CEO-level priority: how Roblox “ages up” from kids’ games to experiences everyone wants to play, by making higher-fidelity avatars and environments performant at platform scale. You Will: Design and ship 3D engine systems for avatar and environment geometry, including mesh processing, level of detail, transcoding, streaming, runtime loading, and related performance systems. Partner closely with other teams (Rendering, Avatar, Studio) and external developers so that the features you build are directly usable to create amazing experiences. Profile and improve the performance of our game engine across a wide range of devices, with particular attention to mobile. Lead by example: drive projects end-to-end, mentor other engineers, and help set a high bar for technical qu

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. Job Description The Geometry Scalability team builds the systems that power both Avatars and Environments across Roblox. Our mission is to enable millions of developers to build large, high-fidelity worlds and multiplayer experiences that still run smoothly on phones and low-end devices. We’re the team that lets Roblox experiences evolve from simple platformers into massively multiplayer, open-world, AAA-quality games. This is a CEO-level priority: how Roblox “ages up” from kids’ games to experiences everyone wants to play, by making higher-fidelity avatars and environments performant at platform scale. You Will: Design and ship 3D engine systems for avatar and environment geometry, including mesh processing, level of detail, transcoding, streaming, runtime loading, and related performance systems. Partner closely with other teams (Rendering, Avatar, Studio) and external developers so that the features you build are directly usable to create amazing experiences. Profile and improve the performance of our game engine across a wide range of devices, with particular attention to mobile. Lead by example: drive projects end-to-end, mentor other engineers, and help set a high bar for technical qu