Senior Security Engineer at CUBE | London

CUBE delivers regulatory intelligence solutions to financial services firms worldwide. Our SaaS platform uses AI to help clients manage complex and changing compliance demands. With a global presence and a team spanning 19 countries, CUBE focuses on collaboration, diversity, and continual product improvement. In 2024, CUBE achieved 50% growth through both or…

Pharmacy2U, the UK's largest online pharmacy, serves over 1.8 million NHS patients and has been a trusted name in digital healthcare for 25 years. As a certified B Corp and Great Place to Work, the company is committed to high social and environmental standards, transparency, and a supportive workplace. Role overview This Full Stack Engineer position is based in London with a hybrid work model. Expect to work from the central London office twice each month. The role is permanent and full-time. Core hours are 09:30 to 16:00, with flexibility to adjust your schedule around these times. What you will do Share technical responsibility for both current and new services. Collaborate with engineers, clinicians, algorithm developers, and Quality Analysts to deliver solutions that are reliable and well-tested. Take part in an out-of-hours on-call rota when required. On-call duties are scheduled fairly and include additional compensation. Who we’re looking for The team is seeking a skilled, detail-oriented Full Stack Engineer who values collaboration and problem-solving. A strong commitment to quality and a desire to improve healthcare for millions are important in this role. Why join Pharmacy2U? Work alongside a team focused on enhancing patient care through technology. Join an organization recognized for its positive culture and social responsibility. Receive a comprehensive benefits package and a competitive salary based on experience. Benefit from supportive and flexible working arrangements.

At Ripple, we're pioneering a future where value is transferred as seamlessly as information. Our bold vision is already becoming a reality. By providing innovative crypto solutions to financial institutions, businesses, governments, and developers, we are enhancing the global financial landscape, fostering economic fairness, and creating opportunities for individuals worldwide. Join us to do the most impactful work of your career, surrounded by supportive colleagues who empower your growth.If you're eager to make a difference and unlock exceptional career development opportunities, come aboard and help us shape real-world value.THE WORKRippleX is committed to empowering the innovators of tomorrow on the XRP Ledger (XRPL), renowned for being one of the fastest and most reliable public blockchains globally. We strive to democratize the digital economy by offering practical support, nurturing a vibrant developer community, and leveraging our expertise as a forward-thinking technology company.The XRPL is a decentralized public blockchain, driven by a global network of businesses and developers who are dedicated to solving real-world challenges and generating value. Having proven its reliability for over a decade with more than 90 million ledgers closed, the XRPL offers streamlined development, cost-effective transactions, high performance, and sustainability. We are seeking senior engineering talent to maintain our high technical standards while creating innovative solutions that meet the evolving demands of the global digital economy.WHAT YOU'LL DOEnhance the capabilities, performance, scalability, and reliability of the XRP Ledger.Engage in the complete software development lifecycle, including architecture, technical design, C++ development, bug fixing, and both functional and performance validations.Contribute to the open-source XRP Ledger community, upholding high standards for code quality, testing, and deployment.Actively participate in code reviews to ensure the integrity of our codebase.WHAT YOU'LL BRINGA Bachelor’s degree in Computer Science or a related field, along with 5+ years of substantial experience in software product development using C++.Proven experience in backend distributed systems development.A strong passion for blockchain technology and its transformative potential.Quick adaptability to new technologies and programming languages.Exceptional problem-solving skills, with the ability to devise creative solutions for complex challenges.Preferred: Experience in developing and contributing to open-source software.

Why Choose Deliveroo?At Deliveroo, our mission is to revolutionize the way people shop and dine, seamlessly delivering local flavors and products right to your doorstep. We enhance the way the world experiences food and shopping by providing unparalleled convenience and satisfaction.As a cutting-edge technology company, we are at the forefront of one of the most rapidly evolving industries globally. Our nimble team is making a significant impact as we tackle some of the most fascinating challenges in the sector. We prioritize agility, value autonomy and ownership, and continually seek innovative ideas. About the RoleIn your role as a Senior Corporate Security Engineer, you will spearhead the design and implementation of security measures that safeguard our internal networks, user identities, endpoints, and corporate systems. Collaborating with security teams across the US, EU, and APAC, you will help us achieve our objectives by minimizing risks and enhancing controls. Operating with a high level of independence, you will set technical directions, make pivotal architectural choices, and execute complex security projects from inception to completion. Your mission will involve balancing risk mitigation with usability, ensuring our security measures are effective yet do not hinder employee productivity. This position emphasizes Identity and Access Management (IAM), Endpoint Security (EDR), Network Security, logging and detection engineering, and secure SaaS enablement. You will collaborate closely with IT, Legal, Privacy, Engineering, and business stakeholders to instill a culture of security across the organization. Your security controls will align with established frameworks such as the CIS Critical Security Controls and the NIST Cybersecurity Framework (CSF).

Ebury is at the forefront of empowering ambitious businesses to achieve global growth, and we extend this philosophy to our team members. Our culture promotes innovation, collaboration, and problem-solving, ensuring a supportive environment where every individual feels valued, included, and equipped to excel.If you're a team player eager to revolutionize global business operations, we invite you to connect with us. Let’s explore how Ebury can advance your career and allow you to shape the future.London Office - Hybrid: 4 days in the office, 1 day working from home

Role Overview We are seeking a highly skilled C# Software Engineering Manager to lead a dynamic, product-focused engineering team. This role involves close collaboration with a Product Owner, business stakeholders, and third-party partners. The successful candidate will play a pivotal role in IT Development, overseeing team leadership, solution delivery, and providing technical direction, especially within finance and operations systems. We are looking for a leader who is technically proficient, passionate about mentoring engineers, and eager to actively engage with a Microsoft technology stack.Key Responsibilities Guide a team of software engineers within the Finance Automation team (Automation and Insights) product squad. Own the technical delivery across both internal development and third-party collaborations, ensuring high quality, timeliness, and alignment with business objectives. Work closely with business stakeholders across Finance, IT, and Operations to ensure cohesive project execution. Uphold high standards in software design, development, testing, and deployment, with a focus on security, resilience, and supportability. Engage in technical decision-making, architecture discussions, and implementation strategies. Promote continuous improvement in engineering practices, including DevOps methodologies, agile delivery, and release management.

Join datatonic as a Senior Machine Learning Engineer and be a pivotal part of our innovative team focused on transforming data into actionable insights. In this role, you will leverage your expertise in machine learning to develop and enhance algorithms, contribute to data-driven solutions, and collaborate with cross-functional teams to push the boundaries of data analytics.

Join Canva's Flourish Platform as a Staff Backend Engineer where you will play a crucial role in building and enhancing our backend systems using TypeScript and Node.js. Collaborate with a talented team of engineers to design scalable and efficient backend services that power our innovative solutions.

Role overview Legal & General seeks a Senior Software Engineer with strong TypeScript skills for its London office. This role focuses on building dependable software that underpins the company’s financial services offerings. What you will do Develop and maintain scalable applications using TypeScript. Collaborate with engineering, product, and business teams to create solutions that address client needs. Contribute to the design and rollout of new features and ongoing improvements. Team and culture The team at Legal & General values collaboration and aims to deliver reliable products for clients across its financial services portfolio.

Who are we?At Cohere, our mission is to harness and scale intelligence for the betterment of humanity. We are dedicated to training and deploying cutting-edge models that empower developers and enterprises to create astonishing AI-driven experiences such as content generation, semantic search, retrieval-augmented generation (RAG), and intelligent agents. We believe that our innovations play a crucial role in the mainstream adoption of AI technologies.We take great pride in the products we develop. Every team member contributes to enhancing our models' capabilities and the value they deliver to our customers. Our culture is driven by hard work and a commitment to swift execution that prioritizes our clients' needs.Cohere is composed of a diverse team of researchers, engineers, designers, and more, all of whom are passionate about their respective fields. Each individual is among the best globally in their area of expertise. We firmly believe that a wide array of perspectives is essential for creating outstanding products.Join us in our quest to shape the future of AI!Why this role?As a Performance Engineer within our Pre-Training team, you will play a pivotal role in optimizing the efficiency and performance of our advanced language models and systems. Your primary focus will be on enhancing critical model training metrics, including training throughput and maximizing accelerator utilization.This team merges software engineering, machine learning, and low-level kernel design expertise to develop robust systems that elevate model performance. You will actively identify and eliminate performance bottlenecks, while also creating innovative training and profiling tools that support Cohere's mission of delivering efficient and reliable language understanding and generation capabilities, thereby driving advancements in natural language processing.Note: While we have offices in London, Toronto, New York, and San Francisco, we are also remote-friendly! This team primarily operates between Eastern Time (ET) and Central European Time (CET), so we are looking for candidates in locations aligned with these time zones for effective collaboration.As a Technical Staff Member, your responsibilities will include:Crafting and developing high-performance, scalable software solutions for model training.Comprehending architectural modifications and design choices and their impacts on training throughput and quality.Writing low-level CUDA and Triton kernels to maximize performance from our accelerators.Conducting research, implementation, and experimentation on our supercomputing and data infrastructure.Collaborating with and learning from top researchers in the field.

Join us at Docker, where we revolutionize app development, allowing developers to concentrate on what truly matters. Our remote-first global team thrives on innovation and enhancing the developer experience. With over 20 million monthly users and 20 billion image pulls, Docker stands as the premier tool for building, sharing, and running applications—trusted by both startups and Fortune 100 companies. As we rapidly expand, we're just getting started. Come aboard and enjoy this exciting journey!We are seeking a Principal Software Engineer (Docker Agents) to join our AI engineering team to shape the future of containerized AI agents. Docker containers provide the ideal environment for hosting and executing AI agents, ensuring isolation, portability, and reproducibility. You will work on our open-source project, cagent (https://github.com/docker/cagent), and enhance it to empower developers in building, deploying, and scaling intelligent agents utilizing Docker’s container technology.This is a unique opportunity to influence how developers harness containers for AI agents on a large scale. You will establish the technical vision, spearhead architectural decisions, and collaborate with engineers and leaders across Docker to integrate containerized agent capabilities into the developer experience.

Join Luminance, a trailblazer in Legal-Grade™ AI technology for enterprises. Recognized by top-tier investors and featured in the Forbes AI 50 list as one of the 'Most Promising Private AI Companies in the World', along with Inc. 5000’s 'Fastest Growing Companies in America', Luminance is transforming the legal field globally.We are seeking a dedicated Technical Support Engineer to enhance our Support function, serving as the initial point of contact for both prospective and existing customers. Your role will be crucial in ensuring a smooth integration of Luminance’s innovative technology within various business environments.As a key member of the Support team, you will manage customer inquiries and issues, ensuring excellent communication and service. Your responsibilities will include ticket management, resolving queries, and collaborating with other departments to deliver effective solutions. You will enjoy cultivating relationships with a diverse clientele, ranging from multinational law firms to major retailers and pharmaceutical companies. Once fully trained, you will possess an in-depth understanding of Luminance’s products and how they can address customer challenges. The ideal candidate will be a personable individual with strong critical thinking skills and a passion for problem-solving.

About Our TeamThe Training Runtime team is responsible for developing the essential distributed runtime that supports everything from early-stage research projects to large-scale model training. Our focus is on creating robust, scalable, and high-performance components to enhance our distributed training capabilities. We aim to optimize the productivity of our researchers and hardware, contributing to the advancement of Artificial General Intelligence (AGI).Within our team, the Process Management division creates the distributed operating system that orchestrates and monitors the multitude of processes involved in contemporary training tasks. Our runtime operates beneath various training frameworks and above research infrastructures, ensuring reliable job execution across expansive clusters while prioritizing performance, stability, and observability.We measure our success through system reliability and the speed at which researchers can turn ideas into production training runs.About the PositionAs a Process Management Engineer specializing in Training Runtime, your role will involve developing software that integrates thousands of computers into a cohesive system. This system must cater to individual researchers conducting numerous parallel experiments, as well as facilitate our largest training operations, which may involve hundreds of thousands or even millions of machines and accelerators. Therefore, it is essential to create user-friendly, introspectable systems that support quick debugging and development while ensuring ongoing optimization for scalability without sacrificing stability and performance.Your primary programming language will be Rust, where you will build high-performance asynchronous systems with a particular focus on performance, accuracy, and scalability.Working at this scale and within the cutting-edge field of AI development presents unique challenges. Conventional solutions may not be effective, and the issues you tackle will be complex and require strong design intuition and effective execution to enhance our infrastructure.We seek individuals passionate about optimizing end-to-end platforms and understanding high-performance architectures to maximize both local and distributed performance across our supercomputers. We are looking for engineers who thrive in a fast-paced environment and can respond to the dynamic and evolving requirements of our training runtime and computational framework.This role is based in London, UK, and follows a hybrid work model, requiring three days in the office each week. We also provide relocation assistance for new hires.

Blockchain.com is at the forefront of revolutionizing the financial landscape by connecting millions to the future of finance. As the most trusted and rapidly expanding global cryptocurrency company, we empower individuals worldwide to securely access cryptocurrency. Since our establishment in 2011, we have gained the confidence of over 90 million wallet holders and more than 40 million verified users, facilitating transactions exceeding $1 trillion in crypto.As we expand our global footprint across retail and institutional products, we are excited to introduce our Early Careers program aimed at nurturing the next generation of talent across various functions.We are on the lookout for a driven Engineering Intern to join our Web3 and AI team at Blockchain.com. This position provides an invaluable opportunity for hands-on experience in a dynamic, high-growth fintech and crypto environment, collaborating with seasoned professionals on impactful business initiatives.You will play a pivotal role in advancing innovative projects in the Web3 and AI sectors, contributing to the development of our platform (June) and strategic R&D initiatives while honing practical skills and gaining insight into the operations of a global technology leader.Duration: 6-month internship with potential progression to a permanent Junior Web3 Engineer role.

About the RoleJane Street is seeking a skilled Infrastructure Security Engineer with a robust background in Windows engineering and hands-on experience with contemporary platform security measures to enhance the security of our IT platforms globally. In this pivotal role, you will exercise sound judgement and a keen sense of priorities to manage complex remediation tasks effectively. Your insights will guide our mitigation strategies and provide essential technical guidance for the team.Your responsibilities will include proactively designing, testing, implementing, and documenting strategic security measures. You will lead the coordination and delivery of security solutions across our IT infrastructure while discovering opportunities to automate intelligent workflows. Your expertise will be vital in securing both internal IT and remote working environments through a blend of technical execution, consultancy, and influence over the broader IT team. This position encompasses a variety of tasks, including building scalable security controls, investigating emerging threats, developing innovative security tools, and spearheading vulnerability management initiatives.As part of our IT Engineering department, you will collaborate with a dedicated team of engineers who oversee our operations across a diverse physical and virtual computing landscape spanning three continents. Your analytical skills and technical proficiency will be crucial in supporting our colleagues' daily operations and maintaining our systems at peak performance.

Join Perplexity, a pioneering firm serving millions of users daily by providing reliable and high-quality answers through an innovative LLM-first search engine combined with specialized data sources. Our Answer Quality team plays a crucial role in refining prompts, tools, searches, and specialized datasets, ensuring that our evaluations are fast, accurate, and actionable. In this exciting role, you will be instrumental in building the data flywheel that supports various teams across Perplexity.ResponsibilitiesDevelop and maintain systems and pipelines that empower Search, Product, and other teams to independently access reliable evaluation verdicts without delays.Take charge of the "evals-to-product" loop, autonomously transforming raw signals into robust datasets that drive decision-making throughout the organization.Construct a sophisticated simulator pipeline capable of replaying user interactions with the product in formats comprehensible to LLMs and VLMs, reflecting real-time product updates.Ensure data integrity by implementing monitoring, lineage tracking, and quality checks, providing downstream consumers with reliable results.Collaborate within a small, impactful team where your contributions will directly influence how Perplexity measures and enhances Answer Quality.

Join causaLens, where we are revolutionizing the way enterprises operate by providing reliable Digital Workers. In a future where reliance on Digital Workers is essential, our innovative technology is akin to the transformative impact of machines in manufacturing. We have developed the first factory and Operating System dedicated to the creation, deployment, and management of Digital Workers. For too long, organizations have struggled with repetitive tasks, overwhelming tools, and costly consultancy services.It’s time to simplify operations.Our Digital Workers handle the mundane workflows, allowing human talent to concentrate on what truly matters. We are trusted by industry leaders like Johnson & Johnson, Cisco, IPG Group, and Syneos Health.With over $50 million in funding from esteemed investors such as Molten Ventures (formerly Draper Esprit), Dorilton Capital, and IQ Capital, alongside visionary angel investors including the CEO of Revolut, we are poised for growth.Discover more about our culture through these insightful articles:1. A Hiring Framework for a New Kind of Services Company2. The Primacy of Winning

About SequenceJoin Sequence and play a pivotal role in creating a transformative platform that empowers businesses to streamline their payment processes. Already processing over $1 billion in annual invoice volume, we're on a remarkable growth trajectory.Our cutting-edge, AI-powered revenue platform is designed specifically for modern finance teams, replacing outdated spreadsheets and clunky legacy systems with intuitive software that enhances productivity.Trusted by Cognition, incident.io, MoonPay, and more than 100 high-growth companies, we manage their entire revenue cycle—from quoting and billing to revenue recognition.Founded by experienced entrepreneurs, we achieved a remarkable 10x growth in ARR last year and recently secured a $20 million Series A led by 645 Ventures, with participation from a16z and esteemed founders and CFOs from notable companies like Decagon, Klaviyo, and Wise.What is it like to work at Sequence?At Sequence, you'll be part of a small team with significant opportunities for impact and ownership. You will engage in meaningful work, connect directly with customers, and grow with the company.If you're ready to do the best work of your career at a rapidly scaling company, we would be thrilled to meet you.The RoleWe are seeking skilled software engineers with robust backend and cloud infrastructure experience to develop and enhance the systems that drive billing for contemporary B2B companies.You will take ownership of infrastructure critical to our revenue stream, where precision is paramount and downtime is not an option. Our usage events platform processes each merchant action that influences customer billing, making it one of our most vital systems. You will contribute to the evolution of this platform to accommodate exponential growth while ensuring impeccable accuracy.This is a unique opportunity to join at an early stage where you can make significant architectural decisions while having real customers relying on your work. You'll design systems that manage high-velocity event streams, make technical choices that optimize cost and performance at scale, and establish infrastructure that prioritizes reliability.What You'll Do:Own critical event infrastructure. You'll develop systems that process customer usage data essential for billing and invoicing, designing event streaming pipelines that manage high throughput with minimal latency, and building robust systems where data accuracy is non-negotiable and uptime is measured in nines.

About AirwallexAirwallex stands out as the premier unified payments and financial platform designed for global enterprises. By leveraging our distinctive blend of proprietary technology and software, we empower over 200,000 businesses worldwide—including industry leaders such as Brex, Rippling, Navan, Qantas, and SHEIN—with seamless solutions to manage everything from business accounts and payments to spend management and treasury, as well as embedded finance on a global scale.Founded in Melbourne, our team comprises over 2,000 of the brightest minds in technology, spread across 26 offices globally. With a valuation of US$8 billion and backing from renowned investors like T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of shaping the future of global payments and finance. If you’re eager to engage in groundbreaking work, we invite you to join us.

Why Join Faculty?Founded in 2014, Faculty believes that AI is the pivotal technology of our era. We have partnered with over 350 global clients to enhance their performance through human-centric AI. Our impact is tangible, as detailed here.We steer clear of fleeting trends. Our focus is on innovating, creating, and deploying responsible AI solutions that yield significant results. We offer clients extensive expertise across technical, product, and delivery domains, serving industries such as government, finance, retail, energy, life sciences, and defense.Our business and reputation are expanding rapidly. We seek individuals who share our intellectual curiosity and aim to build a positive legacy through technology.Join us in harnessing AI—an epoch-defining technology—where you will be empowered to envision and implement its most impactful applications.About the TeamThe process of delivering medical solutions involves complexity, cost, and risk. Faculty’s Life Sciences team is dedicated to developing AI solutions that enhance the research and commercialization of transformative therapies.We collaborate with leading pharmaceutical companies, academic research institutions, and MedTech startups to create solutions that address critical healthcare challenges, democratizing access to health for everyone.About the RoleAs a Machine Learning Engineer, you will deliver tailored, impactful AI solutions for our diverse clientele. You will play a crucial role in transitioning machine learning from theoretical frameworks to practical applications, contributing to robust software architecture and establishing best practices. Collaborating closely with clients and cross-functional teams, you will ensure the technical feasibility and timely delivery of high-quality, production-ready ML systems.Your Responsibilities:Developing and deploying production-grade ML software, tools, and infrastructure.Creating reusable, scalable solutions to expedite the delivery of ML systems.Working alongside engineers, data scientists, and commercial leaders to address significant client challenges.