Security Architect

Thank you for considering a future with Maven Securities Holding Ltd! We invite you to register your interest in our exciting roles and be among the first to know when applications open. This is a great opportunity to explore a career with us! In the meantime, we encourage you to visit our website and follow us on social media to stay informed about our latest news and events. We are eager to review your application soon!

Maven Securities Holding Ltd is a leading proprietary trading firm, leveraging internal capital across a variety of strategies including discretionary, systematic, and market-making. Our diverse team of traders, engineers, and technologists is dedicated to optimizing our role as a top-tier liquidity provider for globally traded derivatives. We utilize innovative execution and pricing technologies to enhance the functionality of financial markets. As Maven grows, we maintain the vibrant energy and innovative culture of a startup, while minimizing associated risks. Key Responsibilities:Build Advanced Analytics Framework: Create scalable Python libraries and tools to standardize performance metrics across teams, establishing automated workflows that transform raw trading data into valuable insights for Portfolio Managers and the Investment Committee.Conduct In-Depth Quantitative Research: Execute comprehensive statistical analyses on trade and portfolio-level data to dissect PnL drivers. Identify alpha decay, inefficiencies, and execution challenges to provide actionable insights that enhance performance.Optimize Existing Strategies: Analyze trade and strategy performance to pinpoint areas for optimization and efficiency improvements. Deliver data-backed recommendations and ensure follow-through.Identify Trading Risks & Opportunities: Monitor portfolio exposures, performance trends, and market signals to detect emerging risks and uncover underutilized or mispriced opportunities across various strategies.Assist in Strategy Development: Support the onboarding process for Portfolio Managers and contribute to business development initiatives involving new product groups and strategies.

Maven Securities Holding Ltd is a distinguished proprietary trading firm that adeptly allocates internal capital across a range of strategies, including discretionary, systematic, and market-making approaches. Our team's extensive expertise encompasses traders, engineers, and technologists, all committed to optimizing our efficiency as a leading liquidity provider for globally traded derivatives. At Maven, we foster a relaxed yet rewarding culture that highly values exceptional performance. With offices located in London, Amsterdam, Hong Kong, New York, and Chicago, our Infrastructure team comprises open-minded technologists dedicated to the continuous enhancement of the end-to-end resiliency, scalability, visibility, and supportability of Maven's trading systems. The Team and the Role The Linux Engineering team is tasked with the deployment, maintenance, and stability of Maven's Linux server environment. This estate spans 10 data centers across Europe and the US, supporting all trading applications. Our infrastructure includes both bare-metal deployments and containers, facilitated by an expanding array of Kubernetes clusters, all operating on-premises. The team operates from Chicago and London, covering both European and US market hours. We proactively monitor our infrastructure for any faults and performance issues, translate technical challenges for our trading teams, design and test new hardware, kernels, and operating systems, manage centralized storage arrays that support our data pipelines, and stay up-to-date with the latest developments in the Linux open-source community. We leverage a variety of open-source tools to extract comprehensive data from our platform and dedicate time to thoroughly investigate issues to ensure we maintain a clear understanding of our environment.

Maven’s Systematic Alpha team is seeking exceptional portfolio managers to contribute to our global expansion. Our group utilizes meticulously researched strategies in trading across futures, options, and equities. We adopt a scientific and process-oriented trading approach, fostering a flexible research environment that efficiently facilitates the development, testing, and implementation of innovative ideas. The Role: This is a remarkable opportunity to research, develop, and execute systematic strategies across listed instruments such as futures and FX. You will take full ownership of the trade/strategy life-cycle, actively monitoring and managing portfolio risk to optimize the risk/reward profile. We promote a collaborative environment with our Quant PMs, encouraging teamwork and shared success. What We’re Looking For: The ideal candidate will possess a comprehensive understanding of the systematic inefficiencies they aim to exploit. They will have played a pivotal role in the research and execution of the strategy and will be adept at developing new strategies from concept to implementation. 3+ years of experience as a Portfolio Manager or 4-5 years as an Assistant Portfolio Manager; Realized Sharpe ratio greater than 2.5; Proven track record of successful strategy execution; In-depth knowledge of the strategy; Robust coding expertise; Strong research capabilities; Master's degree or PhD in a scientific discipline; Experience working with large time series data; Excellent programming skills in Python or Julia. Why You Should Apply: Join a highly rewarding, collaborative, and successful trading firm; Enjoy a flexible research environment for developing, testing, and deploying new ideas; Work in a tech-driven environment where technology is critical to our success; Thrive in a supportive atmosphere that empowers you to achieve your ambitions; Experience a friendly, informal, and rewarding culture.

ABOUT THE COMPANY: Maven is a leading proprietary trading firm, strategically allocating internal capital across a spectrum of discretionary, systematic, and market-making strategies. Our diverse team of traders, engineers, and technologists is united by a shared commitment to enhancing our capabilities as a premier liquidity provider in global derivatives markets. We utilize cutting-edge execution and pricing technologies to redefine the operational landscape of financial markets. Overview: At the intersection of technology and trading, the Maven FPGA team is at the forefront of hardware innovation, developing proprietary designs that maintain our competitive edge in an evolving landscape. With offices in London, New York, Hong Kong, and Chicago, we engineer solutions to support global trading operations across various exchanges, asset classes, and trading strategies. Our small, agile teams are dedicated to growth, investing in people, tools, and platforms to solidify our leadership in the industry. The Role: As a key member of our team, you will collaborate with traders and technologists to identify and leverage opportunities that enhance our competitive advantage through FPGA systems. By optimizing latencies, maximizing throughput, and improving system robustness, you will play a pivotal role in boosting the efficiency of existing strategies and unlocking new trading opportunities. We have several greenfield projects on the horizon, and proactive, self-motivated candidates will have the opportunity to ascend into leadership roles as the firm continues to evolve. While financial experience is advantageous, your engineering skills, problem-solving capabilities, and readiness to tackle new challenges are of paramount importance to us.

Maven Securities Holding Ltd is a cutting-edge proprietary trading firm established in 2011, with a global presence that includes offices in London, Amsterdam, Chicago, New York, Hong Kong, and Monaco. We pride ourselves on having a team of exceptionally skilled traders, developers, engineers, and operational staff who execute a wide variety of market-making and position-taking strategies across global derivatives, equities, and debt instruments. Our culture is relaxed and informal, yet we are fiercely dedicated to high performance and rewarding excellence. The Risk team at Maven is at the forefront of innovative risk management practices, overseeing the extensive trading operations across our organization. We are a cohesive global unit that integrates risk management, technology, and development to create and implement advanced systems while ensuring meticulous monitoring of trading exposures across the firm. This Risk Analyst position offers a unique opportunity for an outstanding individual with specialized expertise in options risk management. Based in our London office, you will collaborate with experienced risk team members from our Hong Kong and Chicago locations. The successful candidate will gain insights into our diverse business activities and strategies while serving as the first line of risk management oversight for critical trading functions. The proprietary risk systems we utilize set the parameters for effective risk management, and as Maven grows and diversifies our strategies, our risk monitoring systems and processes evolve in complexity and sophistication. The Risk Analyst will be tasked with updating and managing daily risk processes and conducting thorough risk monitoring—an essential responsibility given the volume and variety of trades processed. Additionally, you will be involved in interpreting and developing risk metrics, contributing to the enhancement of our risk management practices, and collaborating with the wider team to refine our systems, controls, and procedures. Communication with traders across Europe and our global trading hubs will also be a key aspect of this role. If you excel in a dynamic environment, possess a natural curiosity for the financial markets, and have a foundational understanding of trading and risk concepts, we are committed to helping you evolve into a leading Risk Analyst in the industry.

Role overview The Talent Intelligence Partner at talentful plays a key role in shaping talent acquisition by using data and analytics. This position sits between analytics and recruitment, aiming to improve how the company attracts and manages talent through actionable insights. What you will do Analyze talent data to identify trends and patterns in the hiring landscape Collaborate with recruitment teams to forecast hiring needs and support workforce planning Offer strategic recommendations to refine and strengthen the talent acquisition process Location This role is based in London and follows a hybrid work model.

At Talentful, we are revolutionizing the way high-growth companies assemble exceptional teams. Our mission is to empower some of the fastest-growing tech businesses to transform talent into a sustainable competitive advantage, allowing them to excel in their markets by attracting, engaging, and retaining top talent that drives growth.Established in 2015, Talentful unites experienced talent leaders who integrate seamlessly with in-house teams. Our flexible, subscription-based model delivers the strategic insight and operational execution required to scale effectively—from executive recruitment and workforce planning to enhancing talent processes, activating employer branding, and fostering inclusive, high-performing organizations.We prioritize not just filling vacancies but enhancing talent functions to achieve measurable business impacts. Our partnership has enabled global innovators like Alphabet, Microsoft, Pinterest, Atlassian, Expedia, Instacart, Miro, and more to scale thoughtfully and efficiently.With a global presence across Europe and the US, we share a unified mission: to assist every company we collaborate with in reaching its fullest potential. As we continue to build the preeminent talent consultancy worldwide, we seek individuals who aspire to redefine recruitment as a true catalyst for business value and a long-term competitive advantage.

At Talentful, we are revolutionizing the way high-growth companies build exceptional teams. We collaborate with some of the fastest-growing technology firms, transforming talent into a sustainable competitive edge. Our goal is to assist these companies in winning the market by attracting, engaging, and retaining top-tier talent that accelerates their growth.Established in 2015, Talentful comprises experienced talent leaders who seamlessly integrate with in-house teams. Through a flexible subscription model, we deliver both strategic insights and operational execution necessary for precise scaling—from executive recruitment and workforce planning to enhancing talent processes, activating employer branding, and fostering inclusive, high-performing organizations.Our mission transcends simply filling positions; we aim to empower talent functions to produce measurable business results. We have enabled global innovators like Alphabet, Microsoft, Pinterest, Atlassian, Expedia, and many others to scale efficiently and thoughtfully.With a team spread across Europe and the US, we are united by a singular vision: to help every company we partner with reach its utmost potential. As we strive to build the world’s leading talent consultancy, we invite individuals who aspire to redefine recruitment as a genuine driver of business value and long-term competitive advantage.

At Cfpenergy, we are continually seeking passionate and skilled individuals to join our dynamic team. If you don't find a current position that matches your expertise, we would still love to connect with you!Submit your CV using the form below, and we'll retain your information for future openings that align with your qualifications. Rest assured, if a fitting opportunity becomes available, we will reach out to you directly.

Founded in 1987, ICTS UK Ltd is a leader in integrated security and customer services, delivering exceptional solutions in the most challenging environments. Our innovative approach allows us to collaborate with a diverse range of clients, including major public attractions, leisure facilities, financial institutions, retail, public sector organizations, transport services, and government entities.We are actively seeking dedicated Security Officers to join our esteemed team on high-profile contracts in the vibrant West London area. If you are looking for a fulfilling career where you can make a difference, we invite you to apply.As a Security Officer, you will be part of a close-knit team, requiring a commitment to reliability and flexibility. These positions are permanent and offer an immediate start.Key Responsibilities:Access ControlConducting Security PatrolsResponding to IncidentsProviding Excellent Customer ServiceReport WritingCompleting Daily Operational PaperworkAdhering to all company/client procedures and policiesFollowing all managerial directivesMaintaining High Standards of ProfessionalismPromoting ICTS UK Ltd positively at all times

Company OverviewCommerceIQ is at the forefront of transforming digital commerce with our AI-driven platform. We empower brands to optimize their online sales strategies, enhance retail media ROI, and drive incremental growth across major marketplaces. Partnering with over 900 retailers globally, we support more than 2,200 leading brands in achieving operational efficiency and expanding their market presence in over 50 countries. Our esteemed clientele includes 10 out of the top 12 CPG brands, such as Coca-Cola, Nestle, Colgate-Palmolive, and Mondelez. With over $200 million raised from prominent investors like SoftBank and Insight Partners, we are positioned for continued growth. Discover more at commerceiq.ai.The Role:If you don't find a current opening that matches your skills, we still encourage you to reach out! If you're passionate about our mission and want to be considered for future opportunities, we want to connect with you.CommerceIQ is continuously on the lookout for exceptional talent in critical areas such as Customer Success, Sales, Marketing, People & Culture, Product Management, and General & Administrative. By joining our Talent Community, you will remain at the forefront when relevant positions that align with your expertise become available.What You'll Do:The specific responsibilities will vary by role, but here’s what you can expect as part of our team:Contribute to the evolution of e-commerce technologyWork collaboratively with dedicated and intelligent colleaguesAddress complex challenges faced by global brands on platforms like Amazon, Walmart, and more

At Talentful, we are pioneering the future of talent acquisition for high-growth companies. Our mission is to empower leading technology firms to transform their talent strategies into a lasting competitive edge, enabling them to attract, engage, and retain exceptional talent that drives growth.Founded in 2015, Talentful is a collective of experienced talent leaders who integrate seamlessly into our clients' teams. We offer a flexible subscription-based service that delivers both strategic insight and operational execution, covering everything from executive search and workforce planning to enhancing talent processes, activating employer branding, and fostering inclusive, high-performing organizations.Rather than merely filling vacancies, our focus is on empowering talent functions to achieve quantifiable business results. We have successfully assisted global innovators such as Alphabet, Microsoft, Pinterest, Atlassian, Expedia, Instacart, Miro, and many others in scaling efficiently and thoughtfully.With a diverse global team across Europe and the U.S., we're united by a singular mission: to help our clients reach their fullest potential. As we continue to establish ourselves as the leading talent consultancy worldwide, we are seeking individuals eager to redefine recruitment as a key driver of business value and sustained competitive advantage.

Become a Part of Our Talent Pool! Don’t see your dream job listed? No problem! The perfect opportunity may be just around the corner.If you are interested in a career with us but haven’t yet found the right position, we invite you to join our Talent Pool!This ensures that when a role that aligns with your skills and interests becomes available, our Talent Team can reach out to you directly! What is a Talent Pool & What Happens When I Apply? Our Talent Pool is designed to connect with exceptional individuals who aspire to join our team! Even if there are no immediate openings, we want to know you’re interested! As new roles open up, we will assess our Talent Pool and reach out if there is a suitable match! We also encourage you to keep checking our careers page to ensure you don’t miss your ideal job while we review applications!When joining the Talent Pool, please share a bit about the types of roles you’re interested in and any other information about your skills, experience, and career aspirations!

Join Our Talent Pool at GranolaAre you interested in future opportunities with Granola? If you don’t see an open position that fits your skill set right now, consider joining our Talent Pool!What is the Talent Pool?Our Talent Pool consists of individuals like you who wish to express their interest in joining Granola at a later date. It’s an excellent way for us to stay connected regarding upcoming roles, hiring events, and news related to Granola.How Does the Talent Pool Function?While we don’t actively monitor or curate the Talent Pool, it serves as our primary resource for recruitment. Anyone can join, irrespective of their experience or expertise, and we’ll reach out when a suitable opportunity arises.Will I Be Informed About New Jobs Before They Are Advertised?Yes! We prioritize our Talent Pool when looking for candidates for new roles before making any public announcements.Can Non-Software Engineers Join?Absolutely! Our Talent Pool is inclusive of all roles and levels of experience. We handle all the filtering on our end, so you only need to join once, and we’ll notify you when there’s a suitable match.Can I Speak With Your Team?We are thrilled to have many talented individuals interested in Granola. Unfortunately, due to the high volume of applications, we may not be able to converse with everyone. However, we will reach out if we believe a conversation would be beneficial for both parties.How Can I Join the Talent Pool?Simply click ‘Apply here’, upload your CV, and provide a few details about yourself to join our Talent Pool.

Kaluza invites professionals to join its talent community, even when there are no current openings that fit their experience. As a B Corp-certified energy intelligence platform, Kaluza focuses on accelerating the move toward a zero-carbon energy system. The company values people who help drive this mission. Who Can Join Kaluza welcomes interest from individuals with experience in several areas, including: Software engineering, artificial intelligence, and machine learning Product management and design Commercial roles, sales, and partnerships Operations and strategy How the Talent Community Works Submit a CV and a short note describing the type of work or position you are looking for. The talent acquisition team reviews each submission and keeps details on file for up to 12 months. Update your information at any time if your interests or experience change. What Happens Next This is not an application for a specific job, so there is no set timeline. If a suitable position becomes available that matches your background, the team will get in touch directly. Kaluza aims to acknowledge every submission and will reach out if a relevant opportunity arises. Locations Kaluza welcomes talent community submissions from those interested in Bristol, Edinburgh, Lisbon, London, Melbourne, or Paris.

At Ergonia, we are passionate about nurturing a diverse and vibrant talent pool that sparks innovation and propels our success forward. By joining our talent pool, you’ll gain the opportunity to be considered for a variety of roles across our organization as they become available, collaborating with a team of visionary professionals who are dedicated to transforming our industry.As a valued member of our talent pool, you will receive notifications about upcoming positions that match your skills and career aspirations, ensuring that you remain at the forefront of exciting new opportunities within Ergonia.Key Responsibilities Engage in development programs that foster your skills and career growth. Participate in networking events and workshops to connect with fellow industry professionals. Keep abreast of the latest trends and advancements in your field. Enhance Ergonia's culture through collaboration and innovative thinking during preliminary assessments.

About Semaloop Semaloop is changing how teams approach application testing. Backed by over $3 million in funding from investors who have supported companies like Lovable, ElevenLabs, Hugging Face, Linear, and Dropbox, Semaloop already partners with forward-thinking organizations such as Granola and Gopuff. Our Mission App development often stalls due to slow, manual testing. Semaloop set out to remove these hurdles by automating UI testing in a way that mirrors real user behavior, no need for complicated APIs or extra libraries. Teams describe how their apps should work in plain language, and Semaloop handles the rest, catching issues and verifying each build. This approach gives developers back valuable time and streamlines the release process. We’re building technology that helps computers understand and interact with digital products as people do. If creating tools that reshape software development excites you, Semaloop could be the place to make an impact. Join the Semaloop Talent Pool If there isn’t a current opening that matches your background, consider joining our Talent Pool. This keeps you in the loop for future roles as our team grows in London. How the Talent Pool Works Submit your interest once, no need to reapply for every new position. Your profile stays on our radar for upcoming opportunities. When we start hiring, Talent Pool members are among the first considered. Who Can Join? The Talent Pool is open to anyone interested in contributing to Semaloop’s mission. Whether your expertise is in engineering, product, design, or another area, we welcome your interest.

Join our dynamic team at Maven Securities Holding Ltd as a Facilities & Workplace Services Coordinator. In this pivotal role, you will ensure the smooth operation of our workplace services while fostering an engaging and efficient work environment for our employees. Your responsibilities will include coordinating facility management tasks, overseeing workplace services, and collaborating with various teams to enhance overall workplace experience.