Senior Security Engineer

Join Us in Empowering the UK's Small Businesses At Funding Circle, we believe that small businesses are the backbone of the economy, and our mission is to provide them with the support they need to thrive. Our innovative platform leverages advanced data analytics to facilitate rapid access to funding, ensuring that our clients can secure the resources they need in mere minutes.Combining the agility of a fintech startup with the reliability of a publicly traded company, we offer Circlers the independence to take initiative while making a significant impact on the industry.We take pride in our high-performance culture, where collaboration and support are at the forefront. We uplift one another, challenge the status quo, and succeed together because we understand that unity accelerates progress and innovation.Your Contribution Matters: Last year alone, our platform enabled businesses to generate £7.2 billion for the UK economy Join us in making a difference![Explore Our Impact Report] | [Check Our Trustpilot]Your Role Location: London (Hybrid) | Work Schedule: 2 days in-office | Salary: Competitive + BenefitsLead the definition, advocacy, and integration of secure software development lifecycle (SSDLC) practices and secure coding standards throughout engineering teams via collaboration, training, and the use of tools.Conduct threat modeling exercises for cloud-native applications, microservices, and various infrastructure components.Oversee internal and external penetration testing engagements for Funding Circle's applications, services, and cloud infrastructure.Work closely with Cloud Platform Engineers, DevX, and Product Engineering to embed security requirements into system designs and technology choices from the beginning.Serve as a subject matter expert in DevSecOps, application security, and cloud security (AWS), offering guidance and mentorship to fellow engineers.Drive the implementation of security automation across cloud infrastructure configuration, vulnerability management, and compliance monitoring.Design, implement, and promote the adoption of robust security architectures, controls, and best practices within our AWS cloud environment.

Join Our Mission to Support the UK's Small Businesses At Funding Circle, we believe small businesses are vital to the economy, and we're dedicated to empowering them with quick access to funding. Our innovative platform leverages advanced data analytics to deliver funding solutions in minutes rather than weeks.Combining the dynamic spirit of a fintech start-up with the reliability of a public company, Funding Circle offers our team members the freedom to take initiative while making a meaningful impact.As a collaborative and high-performing team, we uplift one another, challenge conventional thinking, and work together to achieve greater results.Your Impact: In the last year, our platform enabled businesses to generate £7.2bn for the UK economy Become part of a mission that matters!

Join Our Mission to Empower the UK's Small Businesses At Funding Circle, we believe that small businesses are the backbone of the economy, and we strive to provide them with the resources they need to thrive. Our innovative platform leverages smart data to deliver funding solutions in minutes instead of weeks.As a unique fintech company, we combine the dynamic energy of a startup with the stability of a publicly listed organization. This blend offers our team members the autonomy to make impactful decisions while driving significant change.We foster a high-performing culture that emphasizes collaboration and support. Together, we challenge each other, champion our successes, and ensure that everyone feels valued—because we understand that teamwork accelerates progress and enhances our work.Real Impact: Last year, businesses utilizing our platform contributed £7.2 billion to the UK economy. Come be a part of something meaningful![Explore Our Impact Report] | [Check Our Trustpilot Reviews]The Role Location: London (Hybrid) | In-Office: 2 Days | Competitive Salary + BenefitsWe are seeking a talented React Native Engineer to join our innovative team and work on a groundbreaking new product within our established financial services framework. You will excel in a fast-paced environment, adept at navigating uncertainty and solving complex challenges within a collaborative cross-functional team. Your contributions will be crucial in developing and scaling our Mobile App, enabling businesses to access flexible financing solutions. Your enthusiasm for technology and problem-solving skills will be key in advancing our mission.Collaborate within an agile, cross-functional team and technology guilds.Craft exceptional user experiences for our customers.Drive innovation through software development.Implement business functionalities using React Native for both iOS and Android platforms.Engage in code reviews, technical discussions, and collaborative efforts.Mentor and support your colleagues.Create unit, integration, and end-to-end tests to ensure robust code quality.

About Funding Circle Funding Circle helps small businesses across the UK access the funding they need, quickly and efficiently. Our platform uses data analytics to deliver financial support in minutes. We combine the energy of a fintech start-up with the stability of a public company, giving our team room to take initiative and see real results. Teamwork drives our progress. We support and challenge each other, celebrating wins and learning together. Collaboration is central to how we work and grow. Last year, businesses using Funding Circle generated £7.2bn for the UK economy. Our mission has a measurable impact. Explore our Impact Report Read our Trustpilot reviews Role Overview: Legal Counsel Location: London (Hybrid, 3 days in office) Compensation: Competitive salary and benefits Legal Counsel at Funding Circle plays a key part from the start. The role offers autonomy and the chance to drive initiatives that benefit both customers and colleagues. Results are visible, and learning comes through hands-on experience. Main Responsibilities Oversee complex litigation, including following pre-action protocols, initiating proceedings, obtaining judgments, and enforcing actions for FCL investors. Draft and negotiate security documents such as charges, deeds of priority, and settlement agreements. Manage a substantial caseload, monitoring costs and expense recovery. Handle administrative tasks linked to case management. Coordinate with external panel firms on legal matters and cases. Contribute to the development of internal team training programs. What We Value Deep expertise is important, but a growth mindset and positive approach matter just as much. The team values thoughtful collaboration and supports each other every day.

Join Our Mission to Empower Small Businesses Across the UK! At Funding Circle, we are dedicated to supporting the backbone of our economy: small businesses. Our innovative platform leverages advanced data analytics to secure funding for these businesses in mere minutes rather than weeks.Embodying the dynamic spirit of a fintech start-up while enjoying the stability of a public company, we offer our team members, known as Circlers, the autonomy to own their work and the resources to make a significant impact.We pride ourselves on being a high-performing team that lifts each other up. We challenge and support one another, knowing that together we can achieve more, move faster, and build better solutions.Your Impact Will Be Tangible: Last year, businesses using our platform generated an impressive £7.2bn for the UK economy . Join us in a mission that truly matters! London (Hybrid) | 3 days in the office | Competitive Salary + BenefitsWe are currently looking for a Data Steward to join our outstanding data team within Funding Circle. This vital position is part of our central analytics team, integrated within our FlexiPay and Credit Card team. You will play a crucial role in developing and maintaining data products that facilitate data-driven decision-making. This role champions data quality, ensuring that our data is a valuable asset to the company.Data Quality Advocacy: Establish data quality standards for essential data assets and promote adherence to these standards across your domain.Issue Resolution: Serve as the primary contact for data discrepancies, investigating potential data entry errors or system logic issues.Data Lineage & Metadata: Document the origin and transformation of data, as well as user permissions.Collaboration: Partner with Data Producers and Data Product Managers to implement policies and ensure the delivery of high-quality data products.Proactive Problem Solving: Continuously identify and address data-related challenges to enhance our data integrity.

Join Us in Empowering the UK’s Small Businesses At Funding Circle, we believe that small businesses are the backbone of the economy. Our innovative platform accelerates access to funding, allowing businesses to secure the capital they need in just minutes.We blend the agility of a fintech start-up with the security of a public company, empowering our team members—affectionately known as Circlers—to take ownership and drive impactful outcomes.Our high-performing culture is built on collaboration and support. We challenge one another, uplift our peers, and thrive as a united force to achieve meaningful results.Real Impact: Last year, the companies on our platform contributed £7.2bn to the UK economy Come join a mission that truly matters![View Our Impact Report] | [Check Our Trustpilot]The Role London (Hybrid) | 3 Days in the Office | Competitive Salary + BenefitsWe are seeking a Senior (Lead) Data Scientist to join our team as we innovate and refine our next generation of models. Your contributions will be crucial in developing, implementing, and monitoring these models to create substantial value for the business.As a member of the Decision Science team, you will engineer advanced statistical and machine learning models while collaborating with data engineers, analysts, and business stakeholders. You will enhance existing models and have the opportunity to create entirely new models as we expand our borrower products.Develop innovative statistical and machine learning models for commercial lending productsMaintain a strong focus on delivering tangible business outcomes and proactively challenge established normsProvide technical mentorship and guidance to junior team members throughout the model development processAdvise the team on best practices for risk managementOversee the experimentation framework for optimizing models

Join Us in Supporting the UK's Small Businesses! At Funding Circle, we believe small businesses are the backbone of the economy, and we’re dedicated to helping them succeed. Our innovative platform utilizes advanced data analysis to secure funding in minutes rather than weeks.We combine the dynamism of a fintech start-up with the reliability of a publicly traded company, providing our team members—known as Circlers—with a unique blend of autonomy and the opportunity to make a meaningful impact.Our high-performing team fosters a culture of support and collaboration. We challenge each other, celebrate successes, and understand that united, we can drive progress and enhance our outcomes.The impact is tangible: Last year, businesses using our platform contributed £7.2bn to the UK economy Join a mission that truly matters![Explore our Impact Report] | [Check our Trustpilot reviews]Your Role London (Hybrid) | 2 days in the office | Competitive Salary + BenefitsWe are seeking a Senior Software Engineer to become part of our Accounts & Cards team.As a member of our collaborative Credit Risk Platform team within the Core Services department, you will focus on enhancing our proprietary decision engine, which is vital to our application process. You will collaborate with talented peers to deepen your understanding of our credit strategy and the software systems that underpin it. This is a fantastic opportunity to create a significant impact while furthering your skills in a culture that champions innovation, teamwork, and collective success.You thrive on building new solutions and are comfortable navigating legacy codebases. You enjoy tackling complex problems with straightforward software systems.You have a background in Functional Programming, microservices, and/or event-driven architecture.You are a team player who promotes collaborative work and believes that teamwork leads to smarter outcomes.Your skills in coding and problem-solving will be essential in driving our projects forward.

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.

Join Our Mission to Empower the UK’s Small Businesses! At Funding Circle, we believe small businesses are the backbone of the economy, and we’re dedicated to helping them thrive. Our innovative platform leverages advanced data analytics to provide essential funding in mere minutes, not weeks.As a dynamic fintech company with the strength of a public enterprise, we offer a unique environment that empowers our team members, known as Circlers, to take ownership of their work while making a significant impact.We pride ourselves on our high-performing culture where collaboration and support are paramount. Together, we challenge each other, celebrate successes, and ensure that we’re always moving forward, building better solutions for our customers.Your Impact Matters: In the past year, businesses utilizing our platform generated an impressive £7.2 billion for the UK economy Be a part of something that truly matters![Explore our Impact Report] | [Check our Trustpilot Reviews]What We’re SeekingWe are on the lookout for a talented Senior AI Engineer who possesses a strong background in full-stack development and a keen interest in artificial intelligence. Although some professional experience in AI/ML is necessary, this role is ideal for a senior engineer eager to delve into the AI/ML sector and develop cutting-edge applications.Data is at the heart of our mission to create a more equitable financial landscape, and we believe everyone in our organization plays a vital role in safeguarding this asset to better serve our customers.Our central data team operates within our Tech organization and reports to the VP of Data. To enhance our data maturity and foster a truly data-driven culture, we are committed to:Fostering a robust data culture where data is viewed as a valuable assetEmpowering our Circlers to become proficiently data-fluent usersEnhancing our world-class data platformCreating innovative data products across various domainsTransforming our business through machine learning and artificial intelligence

Join Us in Empowering the UK’s Small Businesses! At Funding Circle, we believe that small businesses are essential to a thriving economy. Our innovative platform leverages advanced data analytics to provide them with the funding they need within minutes, not weeks.We combine the dynamic spirit of a fintech startup with the reliability of a publicly listed company, offering our team members the independence to drive initiatives and the scale to create meaningful change.Our high-performing team is dedicated to supporting one another. We challenge each other, celebrate successes, and understand that collaboration enables us to achieve more together.Real Impact: Last year, our platform helped businesses generate £7.2bn for the UK economy Be a part of a mission that truly matters![Explore our Impact Report] | [Check our Trustpilot Reviews]The Role Location: London (Hybrid) | 2 days in the office | Competitive Salary + BenefitsWe are seeking a Senior Engineer to enhance our Loan Servicing team within the Product Engineering department.As a key member of our Servicing team, you will be instrumental in developing and improving our loan infrastructure, ensuring it is accurate, efficient, and user-friendly. Our team thrives on problem-solving, collaboration, and innovation. This is an excellent opportunity to contribute to a team that shapes our customers’ experiences after securing funding from us.

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.

Role overview Funding Circle seeks a Senior AI Platform Engineer based in London. This role centers on shaping and improving AI-powered solutions that make small business financing more accessible. The focus is on designing, building, and refining machine learning systems that enable faster, more effective lending decisions. What you will do Design and develop AI platforms that can scale for production use Optimize machine learning systems to boost performance and reliability Partner with engineers, data scientists, and product managers to deliver solutions that have real impact Team and impact Work alongside a skilled team committed to creating technology that helps small businesses access funding efficiently. The results of your work will directly support Funding Circle’s mission to make finance more accessible for small businesses.

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 organic expansion and acquisitions. The company values ambition, bold thinking, and personal ownership, encouraging employees to shape their careers and contribute to ongoing innovation. Our team includes over 700 professionals working together to transform regulatory compliance for financial institutions. Role overview The Senior Security Engineer will strengthen security engineering standards across CUBE's products and platforms. This hands-on role sits within the growing security function and reports to the Head of Information Security. The position is based in London. What you will do Design and implement security controls for CUBE's SaaS products and internal platforms Integrate security practices into development workflows Develop automation and system integrations to scale security across the organization Promote security awareness and collaborate with teams to maintain high standards Requirements Strong hands-on experience in security engineering Proven ability to develop automation and integrate security tools into engineering workflows Collaborative approach and ability to promote security best practices across teams Comfort working in a role that involves building and creating new solutions

Join Our Mission to Empower UK’s Small Businesses At Funding Circle, we are dedicated to supporting small businesses, the backbone of our economy. Our innovative platform leverages data to provide them with the funding they need in mere minutes, revolutionizing the way loans are serviced.Our culture blends the dynamic energy of a fintech startup with the stability of a public enterprise, allowing Circlers to take ownership and create impactful change.We pride ourselves on being a high-performing team that lifts each other up, fostering a collaborative environment where we challenge and support one another. Together, we achieve more and build better solutions.The impact is significant: Our platform generated £7.2bn for the UK economy last year Join us on a mission that truly matters![Check Our Impact Report] | [View Our Trustpilot]The Role London (Hybrid) | 2 days in the office | Competitive Salary + BenefitsWe are seeking an experienced Senior Engineer to join our Collections, Recovery & Litigation (CRL) and Investor Management (IM) team.In this role, you will enhance and maintain systems designed to simplify the loan servicing process for our Funding Circle Borrowers and manage investor data effectively, ensuring smooth investor relations and access to investment information.Lead initiatives that address challenges faced by our internal Collections and Recoveries teams, enhancing the experience for businesses in distress.Collaborate closely with teams utilizing investor data, understanding their workflows, obstacles, and forming solutions to alleviate them.Automate manual processes across Engineering and Operations, improving efficiency.Demonstrate a passion for building innovative solutions while also being comfortable navigating an existing codebase.Thrive in complex problem domains, utilizing straightforward software systems to address them.

Didn't find a role that aligns with your skills and interests?We invite you to submit an expression of interest to become part of the Two Circles team using the apply link.If a suitable position becomes available in the future, our Talent team will reach out to you as a priority.At Two Circles, we specialize in Sports & Entertainment Marketing. Our mission is to enhance audience engagement and maximize revenue for our clients. We achieve this by gaining deep insights into fan behavior, including their spending habits, event attendance, preferred channels, and content consumption. This knowledge empowers our clients to effectively grow their audiences and revenues, whether directly to consumers or through business-to-business strategies. We are proud to support over 900 clients worldwide, including prestigious organizations such as the English Premier League, Red Bull, UEFA, VISA, the NFL, Nike, and Amazon. With a dedicated team of nearly 1,000 professionals across 14 offices globally, we deliver innovative solutions for sports and entertainment businesses of all types and sizes.For more information about us, please visit our website.

Join Our Mission to Empower Small Businesses in the UK! At Funding Circle, we recognize that small businesses are essential to our economy, and we are dedicated to providing them with the funding they need, quickly and efficiently. Our innovative platform leverages advanced data analytics to streamline the funding process, making it possible for businesses to receive capital in minutes rather than weeks.As a dynamic fintech company with the regulatory stability of a public entity, we offer a unique environment where our team members, known as Circlers, enjoy the freedom to take initiative and the resources to make a significant impact.We pride ourselves on being a high-performing team that supports each other. We believe that collaboration drives success, and together we can create faster, better solutions for our clients.The impact is real: Last year, businesses on our platform contributed £7.2 billion to the UK economy Join us in making a difference![Read our Impact Report] | [See our Trustpilot]The Role London (Hybrid) | 2 days in the office | Competitive Salary + BenefitsYou will have the opportunity to make a meaningful impact for our customers and your colleagues from day one. At Funding Circle, we believe that hands-on experience is the best way to learn and grow, which is why we empower you to take charge and deliver real results.Collaborate with the Architecture team, principal engineers, and engineering teams to design product-agnostic Salesforce capabilities.Enhance Salesforce integration solutions, focusing on event sourcing methodologies.Identify and implement opportunities to leverage Agentic AI and utilize Agentforce for transformative changes.What We’re Looking For We prioritize deep expertise, but it’s your growth mindset and positive energy that will truly help us thrive. We are a team that encourages one another to excel and innovates daily.Proven experience as a Salesforce Developer with Sales and Service Cloud, including proficiency in Apex and LWCs. Salesforce Certification is preferred.Experience with Cloud Infrastructure, ideally AWS.Strong understanding of software development best practices and methodologies, along with a collaborative team spirit.

The Two Circles Athlete Programme provides an exciting opportunity for current or recently retired full-time athletes from any sport to engage in a transformative one-week immersive work experience. This initiative is designed to empower athletes as they transition away from performance sport, while also revealing potential career paths within the sports business industry, should they choose to pursue them.We invite a diverse array of athletes to apply, including representatives from GB Figure Skating, GB Rowing, GB Rugby 7s, GB Alpine Skiing, GB Hockey, GB Kayaking, GB Judo, GB Skeleton, British Gymnastics, British Cycling, British Athletics, British Swimming, and professional cricket players from First Class Counties, as well as professional rugby and netball players.Applications are now open for our upcoming programme week, scheduled to take place from September 21, 2026, at our London office located in Holborn.To apply, please click the button below. For any further inquiries about our programme, feel free to reach out to athleteprogramme@twocircles.com.

Why Join Deliveroo?At Deliveroo, our mission is to revolutionize how people shop and dine by seamlessly connecting consumers, restaurants, shops, and delivery riders. We strive to make food and product accessibility more convenient and enjoyable, empowering individuals to purchase what they want, when and where they desire.As a forward-thinking, technology-driven organization, we are leading the charge in one of the fastest-growing industries globally. Our small team is making a significant impact as we tackle some of the most fascinating challenges. We prioritize speed, autonomy, and innovative ideas, continuously seeking fresh perspectives.About the RoleIn the role of Senior Security Engineer, you will spearhead the development and implementation of security measures that safeguard our internal networks, workforce identities, endpoints, and corporate systems. Collaborating with security teams across the US, EU, and APAC, you will aim to minimize risk and enhance our security controls.Operating with significant independence, you will define the technical strategy, make architectural decisions, and oversee the execution of complex security projects from start to finish. Your focus will be on balancing risk mitigation with user experience, ensuring that security measures are effective without hindering 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 ensure that security is integrated as a fundamental practice across the organization.Our security protocols are aligned with recognized frameworks such as the CIS Critical Security Controls and the NIST Cybersecurity Framework (CSF).

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.