Security Engineer at ARQ | London

About ARQ ARQ is one of the fastest-growing fintech companies worldwide, focused on changing how people move money across borders. The team is building infrastructure for seamless value transfer. Working here means contributing directly to the product, culture, and growth. Those looking to solve meaningful problems and make an impact at a global scale will find a place to grow quickly at ARQ. Role Overview: Security Engineer (London) This Security Engineer role is based in London. The position centers on strengthening ARQ’s security posture across infrastructure, applications, and workflows. Collaboration with teams across the company is essential to drive improvements and maintain high standards for data and system protection. Main Responsibilities Develop and refine SIEM detection rules, alert pipelines, and automated response playbooks using platforms such as Datadog SIEM, CrowdStrike, and Cloudflare. Contribute to incident response readiness by creating incident response playbooks, running tabletop exercises, and setting up forensic procedures. Support data loss prevention (DLP) strategies and data protection across Google Workspace, Slack, and internal tools. Conduct cloud security assessments focused on AWS and Kubernetes environments. Lead application security projects, including threat modeling, secure code reviews, API testing, and enhancing security pipelines. Assess and secure AI and agentic workflows by reviewing prompts, preventing harmful actions, and managing risks related to data exposure. Set up and manage the vendor security assessment process, building a scalable due diligence framework for onboarding third parties.

About the Role arq is seeking a Data Analyst in London to help turn raw data into practical insights. This position supports decision-making and operational improvements across the company. What You Will Do Collect, process, and analyze data from multiple sources Translate findings into clear, actionable recommendations Work closely with teams across the business to ensure strategies are informed by data Who We’re Looking For Strong attention to detail Ability to explain complex data insights in straightforward terms Collaborative approach to working with colleagues from different departments This is a chance to build your analytical skills while contributing to an innovative company based in London.

About ARQARQ is among the fastest-growing fintech companies globally, dedicated to transforming how individuals engage with money across borders. Our goal is to create a seamless infrastructure for value transfer. As a relatively young company, each new team member significantly influences our product development, corporate culture, and overall growth trajectory. If you are motivated by ambitious challenges, aspire to make a global impact, and seek rapid career advancement alongside a world-class team, ARQ is your ideal workplace.Key ResponsibilitiesCollaborate closely with the founders to spearhead critical company initiatives, encompassing areas from growth and operations to artificial intelligence. You will adopt a 'whatever it takes' approach to achieve success.Be a Catalyst for Change: Work hand-in-hand with the founders, driving impactful strategies that align with ARQ's mission.Enhance Product and Growth Platforms: Analyze product metrics, design and implement new features that deliver enhanced value to our customers, and optimize user engagement and virality.Optimize Operations and AI: Identify new payment channels, establish comprehensive partnerships, and resolve customer support issues through thorough analysis.Foster Growth: Contribute to local growth strategies, including community engagement, affiliate and influencer marketing, and brand promotion.Qualifications3 to 7 years of entrepreneurial experience, preferably within a venture capital-backed firm, a top-tier management consulting company (such as BCG, Bain, or McKinsey), or a leading investment bank.Strong stakeholder management abilities, capable of nurturing relationships with essential partners and handling customer support inquiries effectively.Exceptional organizational skills, with the capacity to navigate information across all departments of the company.Resourceful and detail-oriented, ensuring thorough due diligence in all tasks.Solid analytical skills with a keen eye for aesthetics.Team-oriented, driven, persistent, and a proven closer with a knack for overcoming objections.Business proficiency in English is required; knowledge of Spanish or Portuguese is a plus.Candidates ideally should be expatriates residing in London or willing to relocate (ARQ can assist with visa sponsorship).BenefitsCompetitive salaryHealth insuranceFlexible work environment

Join ARQ: Shaping the Future of FintechAt ARQ, we are at the forefront of transforming the fintech landscape globally. Our vision is to revolutionize cross-border financial interactions, crafting a seamless infrastructure for value exchange. As a rapidly expanding company, every new team member plays a pivotal role in sculpting our product, culture, and trajectory. If you thrive in dynamic environments and are eager to make a significant global impact while collaborating with an exceptional team, ARQ is your ideal workplace.Your RoleAttract Top Talent: Collaborate with co-founders and executives to define roles, identify top-tier talent, and develop comprehensive hiring strategies.Embrace Ownership: Go beyond conventional responsibilities to embody the entrepreneurial spirit of ARQ. Your proactive approach will be essential to our success.Data-Driven Recruitment: Take the lead in establishing Recruitment KPIs, monitoring metrics, and making strategic hiring decisions based on data insights.Expand the Talent Team: As we grow, you will help build and lead a team of recruiters to meet our increasing hiring needs.Design Talent Programs: Partner with other Talent Leaders to implement scalable hiring initiatives and support programs for future growth.

Join ARQ as a Senior DevOps EngineerARQ stands at the forefront of the fintech revolution, dedicated to transforming the way individuals and businesses interact with money globally. Our vision is to create seamless financial experiences that transcend borders, and we are actively building the foundational infrastructure necessary to achieve this goal. As we continue to grow, each new team member plays a pivotal role in shaping not only our product but also our culture and trajectory. If you're driven by ambitious challenges and aspire to make a significant global impact while working alongside an exceptional team, we invite you to explore this opportunity.Your RoleAs a Senior DevOps Engineer within our Platform team, you will be tasked with architecting, deploying, and scaling the cloud infrastructure that supports our global fintech platform. We seek an engineer with a software developer mindset who approaches infrastructure as a strategic product rather than merely as configuration. You will engage with multi-region clusters and GitOps workflows to bolster microservices across retail banking, business banking, and wealth management sectors. Our platform engineering culture prioritizes developer experience, type-safe infrastructure, and intelligent automation. If you are passionate about enhancing developer productivity, implementing Infrastructure as Code appropriately, and crafting resilient distributed systems at scale, we would be thrilled to connect with you.Your ResponsibilitiesDesign and implement AWS infrastructure adhering to Infrastructure as Code best practices.Develop reusable libraries that enforce best practices and expedite development processes.Oversee multiple Amazon clusters across the US, EU, and Mexico.Deploy and manage various services including RDS, Kafka, and Redshift.Construct and maintain CI pipelines.Create reusable pipeline templates for microservices architecture and containerized applications.Implement GitOps workflows to facilitate declarative application deployments.Establish monitoring and alerting systems utilizing tools such as Datadog, Prometheus, and Grafana.

Join the ARQ TeamAt ARQ, we are at the forefront of revolutionizing the fintech landscape. Our goal is to transform the way individuals and businesses manage their finances globally, creating seamless pathways for value transfer across borders. As we embark on this exciting journey, every new team member plays a vital role in shaping our product, culture, and future growth. If you are passionate about tackling significant challenges and making a global impact while working alongside a talented team, ARQ is your ideal workplace.Your ResponsibilitiesAttract Top Talent: Collaborate with the co-founders and executive team to identify and define roles, ensuring we recruit A-players who align with our vision, while developing comprehensive hiring strategies.Embrace Ownership: Go beyond traditional responsibilities, embodying the entrepreneurial spirit of ARQ. You thrive on autonomy and are willing to dive into challenges headfirst.Optimize Recruitment Metrics: Take charge of establishing and monitoring Recruitment KPIs, utilizing data to make strategic hiring decisions that align with our growth objectives.Expand the Talent Acquisition Team: As our business expands, you'll be instrumental in building a team of recruiters to support our scaling efforts.Design and Implement Talent Programs: Work collaboratively with the Talent Lead to not only execute the hiring strategy but also to develop robust, scalable initiatives that foster our growth.

ARQ is a fintech company based in London, focused on building seamless infrastructure for moving money across borders. As the company grows, each team member helps shape its products and culture. The Talent Acquisition Specialist will play a key part in supporting ARQ’s rapid expansion and global ambitions. Role overview This position centers on recruiting outstanding talent and developing effective hiring strategies. Working closely with the co-founders and executive team, the Talent Acquisition Specialist identifies hiring needs and leads the search for candidates worldwide. What you will do Partner with leadership to define role requirements and build comprehensive hiring strategies. Drive recruitment efforts to attract and hire top talent globally. Establish and monitor recruitment KPIs, using data to inform decisions. Expand the recruitment team as ARQ scales, hiring additional recruiters as needed. Work with other Talent Leads to design and implement scalable talent programs that support company growth. Take ownership of projects and processes, contributing initiative and a willingness to go beyond standard expectations. Requirements Experience in recruiting, ideally in a high-growth or technology-driven setting. Strong sense of ownership and initiative in managing recruitment projects. Ability to use data and metrics to guide hiring strategies. Comfort working with global teams and scaling recruitment functions.

Join ARQ: Pioneering the Future of FintechARQ stands at the forefront of the fintech revolution, dedicated to transforming how individuals engage with money on a global scale. Our mission is to create a seamless infrastructure for cross-border transactions, enabling effortless value movement. As a rapidly expanding organization, every team member plays a crucial role in shaping our products, company culture, and overall trajectory. If you are passionate about tackling significant challenges and making a global impact while growing alongside a talented team, ARQ is your ideal workplace.Your Role as Product Owner - Core PaymentsAs we continue to innovate in the payments space, we are looking for our inaugural Product Owner - Core Payments based in London. This pivotal role involves taking charge of our payments infrastructure across diverse markets and payment systems, including cryptocurrencies. You will be responsible for negotiating with partners and orchestrating integrations with engineering teams, blending strategic insight with technical execution.Key ResponsibilitiesCollaborate directly with the founding team to develop and scale our core payments products.Identify and drive new initiatives, negotiate with strategic partners, and define integration scopes.Oversee the performance and operational excellence of our existing payment systems.Work closely with engineering, operations, legal, and compliance teams to deliver exceptional products.Monitor payment flows post-launch, troubleshoot issues, and spearhead continuous improvements.Prioritize product tasks to foster transaction growth and achieve key performance indicators (KPIs).Qualifications for SuccessA minimum of 2 years of experience in a high-growth fintech environment, prestigious consulting firms (McKinsey, BCG, Bain), or investment banking.Robust analytical and quantitative skills; comfortable diving deep into data and processes.Highly driven and ambitious, with aspirations to advance into leadership roles, ultimately leading the Core Payments department.A proactive self-starter who excels in ambiguous situations, taking ownership and guiding teams to deliver results.Exceptional communicator and collaborator, adept at engaging with founders and cross-functional stakeholders.Why Choose ARQ?Competitive salary structure.Sign-on stock options to align your success with the company's growth.Performance-based discretionary bonuses (stock options).25 days of annual leave in addition to public holidays.Comprehensive private health insurance.

About ARQARQ stands at the forefront of fintech innovation, rapidly establishing itself as a global leader. Our goal is to revolutionize the way individuals engage with their finances across borders, creating a seamless infrastructure for value transfer. As we embark on this exciting journey, each new team member plays a pivotal role in shaping our product, culture, and overall growth. If you are driven by significant challenges, aspire to make a global impact, and wish to thrive in a high-caliber team, ARQ is your ideal destination.Position OverviewWe seek a highly analytical and strategic Growth Analytics Manager to become a vital part of our Growth team. This role is crucial, with ownership over our growth data management, budgeting, and financial planning across our four primary markets.Your expertise will be essential in converting raw data into strategic insights. Collaborating closely with the Head of Growth and our founders, you will drive business performance enhancements. If you possess a passion for merging intricate data analysis with a profound comprehension of consumer behavior, we are eager to connect with you.Key ResponsibilitiesAct as the analytical backbone for our Growth leadership team by presenting insights and strategic recommendations that directly impact budgeting, prioritization of roadmaps, and overall business strategy.Establish, track, and report on key performance indicators (KPIs) throughout the user journey (AARRR: Acquisition, Activation, Retention, Referral, Revenue).Perform complex analyses (e.g., cohort analysis, A/B tests, attribution modeling, lifetime value forecasting) to pinpoint growth optimization opportunities and analyze shifts in user behavior.Design, execute, and evaluate controlled experiments, delivering clear, statistically significant recommendations to product and marketing teams.QualificationsA minimum of 4 years of professional experience in an analytical capacity.Preferred background from top consulting firms such as McKinsey, BCG, or Bain.Advanced proficiency in SQL for effective data querying, transformation, and analysis.Extensive experience with contemporary data visualization tools (e.g., Tableau, Looker, Power BI).Strong ability to utilize statistical tools or programming languages for data analysis (e.g., Python/R is a significant advantage).Thorough understanding of statistical significance and the execution of related methodologies.

Join Our Team as a Security EngineerAt incident.io, we are transforming incident response with our cutting-edge AI platform, dedicated to minimizing response times and enhancing reliability. Our comprehensive solution integrates on-call management, incident response, AI SRE, and status updates into one seamless platform, empowering teams to act swiftly, reduce outages, and keep their customers informed.Since our inception in 2021, we have successfully assisted over 1,500 organizations, including renowned names like Netflix, Airbnb, and Block, in managing over 500,000 incidents. Each month, thousands of engineers, product managers, and support staff rely on incident.io to restore services efficiently, maintain alignment during high-pressure situations, and focus on what truly matters.We are a rapidly expanding, ambitious team that values our customers, the quality of our product, and the magic we create together. With $100M raised from prestigious investors like Index Ventures, Insight Partners, and Point Nine, along with contributions from top executives in the tech industry, we’re poised for significant growth.Your RoleAs our inaugural Security Engineer, you will play a vital role in our product teams, ensuring application security is integrated from the foundational stages. Collaborating closely with engineers, you will identify vulnerabilities before they progress to production, mentor your peers on secure coding practices, and foster a culture where security is a primary focus.This position offers a unique opportunity to work at the intersection of security and engineering, contributing to the design and development of secure systems that align with our commitment to customer satisfaction.

About ARQ ARQ builds products that help Latin Americans manage their finances across borders. Since 2021, over 2 million customers across the Americas have used ARQ for spending, exchanging, saving, investing, and more. The company is headquartered in London and continues to grow as a global fintech leader. The team brings together talent from leading fintech and technology firms, working to create a modern, accessible, and scalable financial system for cross-border needs. Role Overview: Global Creative Director ARQ is hiring its first senior creative leader. The Global Creative Director will shape and drive the creative vision across all markets. This role will influence how the brand appears to the world, working closely with founders and senior leadership. The position is based in London. The Global Creative Director will build and lead a creative team, including designers, copywriters, and producers. Collaboration with product, growth, and engineering teams is central to the work, ensuring creative output is both consistent and distinctive. What You Will Do Set and guide ARQ's global creative strategy, covering brand, campaigns, content, and product storytelling. Grow ARQ’s brand presence in different markets, keeping it consistent, unique, and culturally relevant. Lead global and local campaigns (including ATL and digital) from concept through execution, across channels such as TV, out-of-home, social media, and new formats. Build and mentor a creative team from the ground up, including designers, writers, producers, and external partners. Develop strong relationships with creative partners, production companies, talent, and collaborators worldwide. Work closely with growth, product, and leadership teams to turn business needs into high-impact creative work. Create an environment where creativity thrives, offering clear direction, timely feedback, and maintaining high standards. What We’re Looking For At least 7 years in creative roles within agency, brand, or hybrid settings. Experience building and leading high-performing creative teams. A portfolio that showcases successful global campaigns and original thinking. Strong communication and collaboration skills. Comfort working in a fast-paced, dynamic setting.

Join Flohealth as a Cloud Security Engineer, where you will play a pivotal role in safeguarding our cloud environments. Your expertise in cloud security principles and practices will be fundamental in developing and implementing robust security measures.In this role, you'll collaborate with cross-functional teams to assess and enhance our security posture, ensuring compliance with industry standards. Your contributions will directly impact the security and integrity of our data and services.

Causaly develops an AI-powered platform designed to help researchers and decision-makers in biomedicine quickly find and interpret evidence from scientific publications, clinical trials, regulatory documents, and complex data sources. The company’s mission centers on building a high-precision Knowledge Graph and applying generative AI to advance biomedical knowledge. Leading biopharmaceutical organizations use Causaly’s technology to accelerate drug discovery, improve safety, and support informed decisions. With backing from investors such as ICONIQ, Index Ventures, Pentech, and Marathon, Causaly continues to expand its product offerings and market reach. Role overview The Senior Security Engineer position at Causaly is based in London and offers the chance to shape the company’s security strategy and processes. This role provides significant autonomy and involves working closely with the security team, as well as collaborating across engineering and product groups. The Security Engineer will take ownership of vulnerability management, advise teams on security matters, and support SecOps activities. Expect to define strategies, build and refine processes, and serve as a trusted advisor throughout the engineering organization. Key responsibilities Lead the vulnerability management program: set strategy, select tools, prioritize work, and track remediation for dependencies, containers, and cloud infrastructure. Develop and maintain a dependency security strategy, including policies for third-party library use and update schedules. Integrate and manage security tools within CI/CD pipelines, such as SAST, SCA, secrets detection, and container scanning. Act as a security consultant for product and engineering teams, supporting design reviews, architecture decisions, and secure coding practices. Define and maintain security standards and guidelines that are practical for development teams. Oversee and improve the Security Champions program to build security awareness and skills across engineering teams. Support SecOps with incident triage and response, providing security engineering expertise when needed.

IT & Security EngineerJoin Solve Intelligence, one of Europe's fastest-growing AI companies, as we expand our IT and security infrastructure!Salary: £65K – £90K plus equity. This is a full-time, in-person role based in London.About the RoleAre you ready to take on a pivotal role in a rapidly growing YC-backed startup? As our founding IT hire, you will collaborate directly with the CTO to design and implement the systems that will facilitate our growth from 40 to 200 employees.Your ResponsibilitiesOversee internal IT operations: Device management using Jamf, Google Workspace administration, and user onboarding/offboarding.Enhance our security and compliance posture: Lead ISO 27001 and SOC 2 Type 2 programs, security policies, and audit processes.Manage customer-facing SSO: Configure enterprise SSO (SAML/OIDC), liaise with customer IT teams, and collaborate with engineers on automation.Design scalable systems: Develop tools, documentation, and workflows to ensure repeatable and efficient IT and security processes.Your ProfileWe're seeking a proactive IT and security engineer who views IT as an engineering discipline rather than a support function. You should be comfortable making decisions and collaborating closely with both technical and non-technical teams.

Join our dynamic team at natter as a Security Engineer, where you'll play a pivotal role in safeguarding our systems and data. Your expertise will help us enhance our security measures and protect our digital assets.

About UsAt TrustFlight, we are a pioneering force in mission-critical software systems and technical services, earning the trust of the aerospace and aviation industries globally. Our cutting-edge solutions enhance the safety and efficiency of aviation operations, safeguarding hundreds of thousands of passengers and crew each month.Why TrustFlight?Our Mission: To transform aviation by providing digital workflow solutions that bolster safety, streamline operations, and instill confidence throughout the industry.Impact: Over 200,000 users depend on our systems daily for operational safety, compliance management, and critical decision-making.Core Values: We uphold integrity, responsibility, innovation, and excellence, empowering our partners to operate with assurance.Join us in shaping the future of aviation through technology.Your RoleAs a Security Assurance Engineer, you will play a vital role in ensuring that TrustFlight’s aviation software and services are secure, resilient, and trustworthy as the company expands globally. This hands-on position focuses on developing and validating security controls that are effective in real-world scenarios.You will be based in London, UK, and report to the CIO while collaborating closely with Platform, Infrastructure, and Application Engineering teams across various time zones. Your contributions will directly support TrustFlight in meeting regulatory, customer, and industry security expectations, while enabling teams to operate swiftly and securely.What You Will DoDesign, implement, and manage security solutions, controls, and supporting tools across platform, infrastructure, and application security domains.Establish, implement, and continuously evaluate security controls to ensure their efficacy in real-world operations.Oversee the Security Information and Event Management (SIEM) capabilities, ensuring effective security monitoring and assurance.Identify, assess, and prioritize security risks and control gaps, translating findings into actionable technical and operational enhancements.Utilize automation to enhance security processes and increase efficiency.

Join Palantir Technologies as an Information Security Engineer in London, where you will play a critical role in safeguarding our cutting-edge technology and sensitive data. Your expertise will help us develop and implement robust security strategies, ensuring that our platforms remain secure against evolving threats.

About WRITERWRITER is at the forefront of empowering the world's leading enterprises with AI-driven solutions. Our mission is to enhance human capabilities through superintelligence, proving that transformative, reliable AI is achievable. By bridging IT and business teams, we enable organizations to undergo enterprise-wide transformations. Hundreds of renowned companies, including Mars, Marriott, Uber, and Vanguard, utilize WRITER's comprehensive platform to build and deploy AI agents based on their unique data, powered by our enterprise-grade LLMs. With a valuation of $1.9B and support from top-tier investors like Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is solidifying its role as a pioneer in enterprise generative AI.Founded in 2020, and with offices in San Francisco, New York City, Austin, Chicago, and London, our dynamic team is dedicated to innovative thinking and swift action. We invite talented, dedicated builders and visionaries to join us in shaping the future of work through AI. About the RoleJoin us as a Security Engineer specializing in Application Security at WRITER, where security innovation meets enterprise-scale challenges. You will lay the foundational security measures to safeguard the AI systems that support some of the most recognizable brands globally. Collaborating closely with engineering teams, your role will be pivotal in integrating security into every aspect of our coding processes, ensuring our platform remains robust and trustworthy.This is a tremendous opportunity to shape the security landscape for enterprise AI applications, from threat modeling our LLM architectures to creating scalable automated security controls across our growing platform. Embrace the challenge of discovering creative solutions that allow us to proceed securely. You will encounter unique hurdles that most security engineers may never face, including securing AI agents, shielding training data pipelines, and designing controls for systems that are still in their infancy.This position offers the flexibility of remote work within the US or a hybrid model from our San Francisco or New York City offices, with direct reporting to the Head of Security Engineering.

Join PPRO, where our mission is to streamline access to local payment methods and our vision is to empower global commerce by enabling sales to anyone, anywhere, using their preferred payment method. We collaborate with industry leaders such as Ant Group, PayPal, and Stripe, helping them tap into new markets, engage a broader customer base, and drive growth.Our strength is rooted in our diverse team, comprising over 50 nationalities across more than 10 international locations, all working towards a shared goal: delivering exceptional products and services to our partners and customers. While we strive to innovate in global commerce, we also embrace internal values such as #chooseaction, #beopen, #thinkcustomer, #gofurther, and #wintogether.Role Overview:We are looking for a highly skilled and driven Senior Security Operations Engineer to join our vibrant security team. This pivotal role is essential to safeguarding PPRO against an ever-changing threat landscape. You will be responsible for identifying, analyzing, and responding to security incidents, focusing primarily on enhancing our detection capabilities through the creation of SIEM rules. You should be proactive, hands-on, and self-motivated, with a solid background in operational security and a passion for addressing complex challenges with state-of-the-art technologies. This position offers a unique opportunity to engage in various aspects of security operations within a dynamic, cloud-native environment.

Join Our Team as an IT Security Engineer!5ive Tech Limited is on the lookout for an experienced 3rd Line Infrastructure Engineer with a strong background in IT security. This role requires expertise in Security Information and Event Management (SIEM) tools such as Splunk, LogRhythm, or QRadar.As an IT Security Engineer, you will be responsible for setting up networks, servers, and providing 3rd line Business As Usual (BAU) infrastructure support. Your experience in handling various security projects and working with SIEM tools will be instrumental in enhancing our security posture.Join us and be part of a dynamic team dedicated to safeguarding our IT infrastructure!