Senior Performance Testing Engineer

At Hudl, we pride ourselves on cultivating exceptional teams. We recruit top-tier talent to ensure you work alongside individuals who inspire continuous learning. You will be empowered to accomplish your tasks in your own unique style while pushing the boundaries of innovation and creativity. Our supportive culture is reflected in the recognition we've received, including being named one of Newsweek's Top 100 Global Most Loved Workplaces. As the backbone of the sports world, we understand the lasting impact that sports can have, from teaching teamwork and commitment to inspiring coaches and unlocking potential. Our solutions are designed to help athletes and teams worldwide enhance their performance by simplifying video capture, data analysis, and highlight sharing.Are you ready to be part of our mission?Your RoleWe are looking for Senior Engineers to join our dynamic Human Performance team, dedicated to developing innovative solutions for athletes and sports teams that transform training, competition, and peak performance.Your responsibilities will include:Cross-Functional Collaboration: Partner with Engineering, Quality Assurance, Product, Design, and Scrum teams to create comprehensive full-stack web features.Development and Delivery: Enjoy the autonomy to make significant contributions to the product area, responding to customer needs and delivering breakthrough features that empower our coaches and athletes.Idea Testing: Participate in rapid iterations, deploying updates to the product hundreds of times daily. You'll also have the chance to address complex technical challenges and mentor junior engineers.Mentorship: Share your knowledge and guide others on development best practices, exemplifying excellence in planning, design, and execution of intricate projects.

Role overview Netcompany1 seeks a Senior Performance Analyst based in London. This role centers on driving improvements in project performance and helping teams achieve strong results. The analyst partners with colleagues from various areas, using data-driven analysis to support informed decisions and strengthen day-to-day operations. What you will do Examine project performance data to spot trends and highlight areas for potential improvement Collaborate with cross-functional teams, sharing insights and supporting efforts to reach better outcomes Apply data insights to guide strategic decisions and recommend operational adjustments

Role Overview Position: Senior Performance Manager - Customer Experience Location: London – The River Building HQ Working Pattern: Hybrid Deliveroo’s Customer Care team supports customers, riders, and restaurant partners with thoughtful, efficient, and empathetic service. The team handles live issues, improves proactive support, and uses data insights to drive continuous improvement. Service excellence is a core value across the marketplace. The Senior Performance Manager joins the Marketplace Support & Service Excellence group. This role focuses on ensuring fair, timely, and high-quality resolutions for all users, especially during critical moments. What You Will Do Shape performance strategy as part of the Customer Experience & Integrity (CXI) team. Maintain operational health by going beyond surface-level reporting to understand marketplace dynamics. Contribute to continuous improvement initiatives that enhance customer, rider, and partner experiences. Champion service quality and support excellence at every touchpoint. About Deliveroo Deliveroo is committed to reshaping how people shop and eat. The company values service excellence and works to provide meaningful support for everyone in its marketplace.

Join Adaptive Financial Consulting as a Senior Performance Marketing Lead, where you will spearhead innovative marketing strategies that drive growth and enhance brand visibility. In this pivotal role, your expertise in performance marketing will be instrumental in optimizing campaigns across various digital platforms.

At Entain, we are committed to transforming the landscape of betting and gaming, and we are seeking a dynamic and results-driven strategic finance leader to help define the future of our ASE region.This pivotal role holds significant visibility and impact, as the ASE region encompasses our critical high-growth markets, featuring renowned brands such as Bwin, SportingBet, Sports Interaction, and PartyCasino.As a commercial performance expert in this >£1.5 billion region, you will serve as a vital link between finance and commercial teams, driving value across multiple countries and brands.Key Responsibilities:Develop and implement frameworks to evaluate key operational and financial metrics, enhancing business transparency and performance management.Create daily and weekly performance monitoring systems to identify commercial risks and growth opportunities.Conduct thorough performance analyses to uncover complex root causes.Collaborate with commercial leadership to deliver data-driven insights that underpin critical business decisions.Formulate and assess business cases for impactful strategic initiatives and investments.Oversee the quarterly forecasting and annual budgeting processes across various markets.The previous incumbent did not have direct reports but was supported by the general finance function. We plan to complement this new hire with a junior analyst.

Join beam-up as a People Performance Partner and play a pivotal role in enhancing our team's effectiveness and engagement. In this dynamic position, you will collaborate closely with leadership to develop strategies that optimize employee performance, foster a positive workplace culture, and drive organizational success.Your expertise in performance management and employee engagement will be key in identifying areas for improvement and implementing innovative solutions. You will also assist in developing training programs and initiatives that empower our employees to reach their full potential.

Join AlixPartners as the Senior Vice President of Performance in our Logistics & Transportation division. In this pivotal role, you will drive strategic initiatives, optimize operations, and lead high-impact projects that enhance our clients' supply chain efficiency and delivery performance.

Join Waymo as a Senior Manager of Central Production and Performance, where you will lead initiatives to enhance our production processes and optimize performance metrics. This role encompasses strategic oversight, team leadership, and operational excellence, ensuring that our cutting-edge technology is delivered efficiently and effectively. You'll collaborate closely with cross-functional teams, driving innovation and continuous improvement in our production workflows.

About OLIXAt OLIX, we are at the forefront of an AI revolution, addressing the rapid growth and demand that has outpaced current infrastructure capabilities. The existing hardware frameworks are reaching their limits, and we are innovating a new paradigm to redefine efficiency and performance in computing. Our groundbreaking Optical Tensor Processing Unit (OTPU) sets a new standard for energy efficiency and performance, positioning OLIX to become a leader in the technology of the future.The Role:As the Engineering Manager for Performance Modelling, you will spearhead a dynamic team of six engineers focused on the architecture specifications of the OTPU. Your role involves validating these specifications through rigorous performance modelling techniques including roofline, functional, cycle-accurate, and power modelling. Collaborating closely with compiler, ASIC, product, and business development teams, you will ensure that architectural decisions align with customer needs and business objectives.We seek a seasoned engineering manager who can inspire a talented team to achieve impactful results for our clients and the business. Your deep technical expertise and proven ability to foster a collaborative and high-performing team culture will be crucial to navigating the complexities of hardware/software co-design.

About OLIXAt OLIX, we are at the forefront of a technological revolution. With artificial intelligence evolving at an unprecedented pace, the demand for advanced infrastructure is soaring, creating a significant gap in the market. Current hardware approaches are outdated and unable to meet this demand. OLIX is pioneering a new paradigm with our Optical Tensor Processing Unit (OTPU), which promises unmatched performance and energy efficiency, setting the stage for the next great economic opportunity in the coming century.The RoleWe are looking for a passionate and skilled Staff Performance Modelling Engineer to take charge of creating and refining analytical and simulation models that will guide the evolution of our OTPU architecture and software. You will be responsible for developing functional simulators and high-fidelity, cycle-accurate models of our optical computing system. This pivotal role will allow you to explore diverse design possibilities and provide insights that shape our software and hardware roadmaps. If you thrive in a data-driven environment and enjoy rapid iteration, this position is designed for you.ResponsibilitiesOwnership: Define and execute the technical vision and roadmap for your team, aligning with OLIX's strategic technical and business objectives.Collaboration: Work closely with engineering teams to refine our system architecture and ensure that models are accurate and aligned with performance targets.Champion Modelling: Advocate for modelling methodologies and foster a culture of data-driven design across the organization.Functional Simulator: Design, build, and maintain a functional simulator for the OPTU subsystem and its full processing pipeline.Performance Simulator: Develop and maintain architectural and cycle-accurate models of the OPTU subsystems, identifying performance bottlenecks and proposing solutions.Workload Analysis & Bottleneck Hunting: Instrument various workloads to gather detailed performance traces for analysis.Design-Space Exploration: Conduct extensive parameter sweeps to evaluate trade-offs and inform decisions regarding software, hardware, and optical technologies.

Join our dynamic Machine Learning team at Jane Street as a Machine Learning Performance Engineer. We are seeking an innovative engineer with a strong background in low-level systems programming and performance optimization. Machine learning is fundamental to Jane Street's operations, providing a unique rapid-feedback environment for experimentation and real-time application in our trading strategies. Your role will focus on optimizing the performance of our machine learning models, enhancing both training efficiency and inference speed. We prioritize efficient large-scale training, low-latency inference for real-time systems, and high-throughput inference for research purposes. Your contributions will involve not just improving CUDA performance but also adopting a holistic systems approach that encompasses storage systems, networking, and GPU-level considerations. We aim to ensure that our infrastructure is optimized at every level, from memory access to overall throughput. If you have a curious mind and a passion for tackling complex problems, regardless of your background in finance, you will find a welcoming environment here at Jane Street.

Fuse Energy is an innovative renewable energy startup dedicated to accelerating the delivery of a terawatt of renewable energy. We leverage first-principles thinking and state-of-the-art technology to create a fundamentally improved energy system. Our funding of $170 million comes from distinguished investors such as Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group, and strategic angels including Nico Rosberg, the Co-Founder of Solana, as well as General Partners behind Meta, Revolut, Spotify, Uber, and many others.We are in the process of establishing a fully integrated energy company that encompasses the development of solar, wind, and hydrogen projects, alongside real-time power trading and distributed energy installations. By selling directly to consumers, we eliminate the middleman, reducing costs and passing on savings to our customers.Additionally, we are building the Energy Network: a decentralized platform of smart devices that incentivizes users with Energy Dollars for enhancing their homes, shifting energy usage to off-peak hours, and aiding grid stability. This network is essential for reinforcing grid reliability, a cornerstone for scaling AI data centers and other energy-intensive industries.As a Senior HR Specialist, you will oversee and enhance core people operations throughout the employee lifecycle. You will serve as the primary resource for HR operations, policy execution, process management, HRIS data integrity, and employee support, ensuring a structured and efficient approach in our fast-paced startup environment. Collaborating closely with leadership and hiring managers, your goal will be to deliver a high-trust and high-quality employee experience at scale.

Jobs for Humanity is looking for a Senior Engineer based in London. This position plays a key part in guiding engineering projects and maintaining high standards for technical work. Role overview The Senior Engineer leads project teams and oversees the development of technical solutions. This role involves managing project timelines, coordinating with colleagues, and ensuring that deliverables meet quality expectations. What you will do Lead engineering projects from planning through delivery Develop solutions to technical challenges Review and ensure the quality of technical outputs Impact Your work will influence the direction of Jobs for Humanity’s technology services and help set standards for future projects.

Jobs for Humanity is hiring an Associate Engineer in London. This entry-level position gives early-career engineers a chance to work alongside experienced colleagues on projects that support inclusivity and accessibility. Role overview The Associate Engineer role focuses on hands-on learning and teamwork. Expect to contribute to ongoing projects, share ideas, and help advance solutions that make a difference in people's lives. What you will do Work with a team of engineers on initiatives that foster accessibility and inclusion Support project development from planning through execution Learn from experienced professionals and apply new skills in real-world settings Location This position is based in London.

HUMAN is looking for a Technical Account Manager to join the team in London, UK. This position centers on supporting customers throughout their journey, focusing on real-time client protection and ensuring customers gain meaningful value from HUMAN’s solutions. The role covers the full customer lifecycle, from onboarding to ongoing relationship management. Technical Account Managers at HUMAN serve as trusted partners to clients, combining technical knowledge with strong organizational skills. The position requires balancing multiple priorities, acting as the main point of contact for assigned accounts, and advocating for customer needs within the company. Building strong connections with clients helps shape HUMAN’s product direction, ensuring customer feedback influences both immediate and long-term improvements. Key Responsibilities Focus on customer satisfaction, retention, and building referenceable relationships across all assigned accounts. Serve as the primary contact for customers, developing and maintaining strong partnerships to support long-term success. Work with support teams to deliver high-quality service and act as the escalation point for customer issues. Collaborate with Sales, Tech Support, R&D, Finance, Product, and executive leadership to ensure a smooth customer experience. Gather and share customer feedback, advocating for product and service enhancements. Lead educational sessions and create materials to help customers understand and use HUMAN’s products effectively. Quickly learn about HUMAN’s Enterprise Security solutions, including Bot Defender, Code Defender, Credential Intelligence, and Account Defender, to support the Customer Success team. Organize and lead Executive Business Reviews with key customers and HUMAN stakeholders, including both leadership and technical teams. Requirements 5-7 years of client-facing experience in a similar role, with a proven record of managing and nurturing customer relationships.

jobgether is hiring a Senior Human Resources Business Partner based in the UK. This position plays a key part in shaping HR strategies that support business objectives and strengthen company culture. Role overview This role focuses on partnering with business leaders to understand their priorities and challenges. The Senior HR Business Partner provides guidance on talent management, organizational development, and change management, working to align HR practices with overall company goals. What you will do Advise leaders on HR strategy and organizational development Support talent management processes Promote employee engagement and satisfaction Help guide change management initiatives Requirements Experience in human resources or talent management Ability to collaborate with business leaders Strong understanding of organizational development and change management Based in the UK

Join Our Ambitious Team at Runna!At Runna, we are dedicated to creating the premier training platform for runners of all levels. Our innovative app is designed to transform everyday runners into exceptional athletes, offering world-class training, coaching, and a vibrant community. Whether you're aiming to improve your 5k time or preparing for your first marathon, we support your journey.Our growth trajectory is impressive! In November 2023, we secured a $6.5M funding round led by JamJar, with notable participation from Eka Ventures, Venrex, and Creator Ventures. In 2024, Apple recognized us as one of three global finalists for the iPhone App of the Year, highlighting the innovation and impact of our platform. Furthermore, in 2025, we proudly became part of Strava!Our ambition knows no bounds: we strive to be the leading global training platform for millions of runners worldwide. With our recent acquisition by Strava accelerating our progress, now is an exciting time to join our team and contribute to something truly meaningful. Your RoleWe are seeking a Performance Marketing Manager who will be instrumental in driving our paid social and emerging channel strategies. You will oversee campaign strategy, execution, and optimization across various platforms, collaborating closely with our in-house creative team to achieve rapid and scalable growth. The ideal candidate will possess strong mobile app experience, particularly from a subscription-based business, and a proven track record in driving results through paid social initiatives.With a substantial budget, dedicated creative resources, and a fast-paced team environment, you will be expected to act swiftly, experiment boldly, and stabilize performance against strict Customer Acquisition Cost (CAC) targets. As we continue to expand, you'll have the chance to explore and utilize emerging paid channels such as Reddit and Spotify.Take ownership of performance platforms (e.g., Meta, TikTok, new channels) to plan and execute campaigns across the entire funnel (prospecting, retargeting).Work collaboratively with our creative team to ideate, brief, and analyze advertising creatives.Develop and manage a comprehensive performance testing roadmap (hooks, formats, targeting, landing pages).Continuously monitor and optimize performance to meet CAC/LTV goals on a weekly, monthly, and quarterly basis.Identify and troubleshoot signal issues and attribution gaps (Pixels, AppsFlyer, S2S, SKAN).Enhance measurement frameworks and contribute to incrementality testing.Propose opportunities for new automation strategies and optimizations.

Join our dynamic team at Jobs for Humanity as a Senior Project Manager in London. In this pivotal role, you will lead innovative projects that drive our mission forward, ensuring that we deliver on our commitments to the communities we serve. You will collaborate closely with cross-functional teams, manage project timelines, and oversee resource allocation to optimize project outcomes.

About UsSamsara (NYSE: IOT) is a leader in the Connected Operations™ Cloud, a cutting-edge platform that empowers organizations reliant on physical operations to leverage Internet of Things (IoT) data for actionable insights and enhanced operational efficiency. Our mission at Samsara is to enhance the safety, effectiveness, and sustainability of the physical operations that fuel the global economy. These sectors comprise over 40% of global GDP, acting as the backbone of our society, including agriculture, construction, field services, transportation, and manufacturing. We are thrilled to facilitate the digital transformation of these vital operations on a large scale.Joining Samsara means you will play a pivotal role in shaping the future of physical operations, working within a team that is innovating a diverse range of product solutions, such as Video-Based Safety, Vehicle Telematics, Applications and Driver Workflows, and Equipment Monitoring. As part of a publicly listed company, you will enjoy both the autonomy and support necessary to make a lasting impact as we build for the long term.Role Overview:We are seeking a strategic and results-oriented Senior Performance Marketing Manager to spearhead our performance marketing initiatives across the EMEA region, driving customer acquisition and business expansion through Paid Media channels including paid search, paid social, and other performance avenues.This role will encompass the comprehensive strategy and execution of performance marketing campaigns tailored to the EMEA region (UKI and Mainland EMEA), prioritizing the development of full-funnel paid media campaigns, rigorous experimentation, optimization, and achieving measurable effects on our pipeline and revenue. You will play a vital role in scaling our search ads and paid social initiatives across platforms such as Google Ads, Microsoft Ads, LinkedIn, and Facebook, while also exploring new performance channels.The ideal candidate is both strategic and hands-on, analytical, and eager to discover new growth avenues while continuously optimizing cost-per-acquisition (CPA) and return on ad spend (ROAS) across various platforms. This is a high-impact position crucial to our growth objectives in a complex, multi-market environment, perfectly suited for someone who thrives in dynamic settings, enjoys data-driven problem solving, and is passionate about driving outcomes from inception to completion.This is a remote role open to candidates residing in the UK, with a preference for those based in London.