Research Engineer in Science of Scaling

About Airwallex Airwallex builds financial and payments infrastructure for global enterprises. More than 200,000 businesses worldwide rely on our platform, including companies such as Brex, Rippling, Navan, Qantas, and SHEIN. Our technology helps organizations manage business accounts, payments, spend, treasury, and embedded finance across borders. Founded in Melbourne, Airwallex has expanded to over 2,000 employees in 26 offices worldwide. The company is valued at US$8 billion and backed by investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital. We continue to shape the future of global payments and financial services from our London office and beyond.

About the Role Airwallex is hiring a Software Engineer focused on scale in London. This role centers on building systems that handle rapid growth and deliver reliable user experiences. The work involves solving complex technical challenges and contributing to the architecture that supports our expanding platform. What You'll Do Design and develop software that scales to support a growing user base Work with a team to improve system performance and reliability Tackle technical challenges related to scaling infrastructure and services Who We're Looking For Strong interest in scalable systems and backend engineering Comfort working in an environment where priorities can shift quickly Curiosity and drive to solve tough technical problems This position is based in London, UK.

About AirwallexAirwallex stands as the premier unified payments and financial platform tailored for global enterprises. Our innovative blend of proprietary technology and software empowers over 200,000 businesses globally—ranging from Brex and Rippling to Navan, Qantas, and SHEIN—by providing fully integrated solutions that encompass business accounts, payment processing, spend management, treasury functions, and embedded finance on a worldwide scale.Established in Melbourne, we boast a dynamic team of over 2,000 talented individuals spread across 26 offices worldwide. With a valuation of $8 billion and support from leading investors such as 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 payment and financial platforms. If you’re eager to embark on a journey of ambitious growth, we invite you to join us.

About AirwallexAirwallex stands at the forefront of global financial solutions, offering a unified payments and financial platform tailored for businesses worldwide. With our proprietary infrastructure and innovative software, we empower over 200,000 companies—including renowned names such as Brex, Rippling, Navan, Qantas, and SHEIN—by providing fully integrated solutions for managing business accounts, payments, spend management, treasury, and embedded finance on a global scale.Founded in Melbourne, our diverse team consists of over 2,000 talented individuals across 26 global offices. Valued at $8 billion, we are supported by top-tier investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital. Join us in revolutionizing the global payments landscape and embark on the most ambitious journey of your career.

About AirwallexAirwallex is a pioneering global payments and financial platform tailored for businesses, leveraging our innovative proprietary infrastructure and software. We empower over 200,000 businesses globally—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—with seamless solutions that encompass business accounts, payments, spend management, treasury, and embedded finance at a global scale.Founded in Melbourne, our team consists of over 2,000 of the most talented and forward-thinking individuals in technology, spread across 26 offices worldwide. With a valuation of US$8 billion and support from prominent investors such as T. Rowe Price, Visa, Mastercard, and more, Airwallex is at the forefront of transforming the future of global banking. If you’re eager to embark on a journey of impactful and ambitious work, we invite you to join us.

Join Our Team at AirwallexAirwallex is a pioneering global payments and financial platform designed specifically for businesses that operate on a worldwide scale. Utilizing our innovative blend of proprietary technology and software solutions, we support over 200,000 enterprises globally—including notable names like Brex, Rippling, Navan, Qantas, and SHEIN—with seamless integration for managing business accounts, payments, spend management, treasury, and embedded finance on an international level.Founded in Melbourne, our organization consists of over 2,000 talented professionals across 26 international offices. With a valuation of US$8 billion and strong backing from industry leaders such as T. Rowe Price, Visa, Mastercard, and Sequoia, Airwallex is at the forefront of creating the future of global financial services. If you are prepared to embark on the most impactful journey of your career, we invite you to join us.What We ValueWe seek innovative builders who possess a founder-like spirit and are eager to create a meaningful impact. You should bring a wealth of relevant expertise, strong analytical skills, and a passion for our mission and operating principles. Your ability to act swiftly with sound judgment, coupled with an insatiable curiosity, will enable you to approach challenges from first principles, effectively balancing speed and thoroughness.We value humility and collaboration, turning innovative concepts into tangible products and ensuring execution from start to finish. Leverage AI to enhance your efficiency and expedite problem-solving. At Airwallex, you will confront intricate, high-stakes challenges alongside exceptional colleagues, while advancing your career in shaping the future of global banking.About the TeamThe Legal, Risk & Compliance (LRC) team at Airwallex is a dynamic group of legal and risk management experts dedicated to protecting the integrity of our operations. We foster a culture of compliance and ethical practices, ensuring responsible navigation of the global financial landscape. Our team offers specialized guidance and proactive support throughout the organization, focusing on identifying, mitigating, and managing legal and financial risks to facilitate sustainable growth.Key ResponsibilitiesAs the Senior Manager for Fraud Risk, you will act as a subject matter expert in fraud risk management within the Second Line of Defense risk team, reporting directly to the Director of Fraud Risk. You will lead initiatives aimed at identifying and mitigating fraud risks across our operations, ensuring robust compliance and integrity in our practices.

About AirwallexAirwallex stands as the sole unified payments and financial platform tailored for global enterprises. Leveraging our unique blend of proprietary infrastructure and innovative software, we empower over 200,000 businesses globally—such as Brex, Rippling, Navan, Qantas, and SHEIN—with comprehensive solutions for managing everything from business accounts and payments to spend management, treasury, and embedded finance on a worldwide scale.Founded in Melbourne, we proudly boast a team of over 2,000 of the most talented and inventive minds in technology across 26 offices worldwide. With a valuation of US$8 billion and the support of top-tier investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of creating the global payments and financial platform of tomorrow. If you're ready to embark on the most ambitious journey of your career, we invite you to join us.Attributes We ValueWe seek builders who possess founder-like energy and desire to make a tangible impact, accelerate their learning, and gain true ownership. You bring substantial role-related expertise and sharp analytical thinking, motivated by our mission and operating principles. You act swiftly with sound judgment, explore deeply with curiosity, and make decisions grounded in first principles, maintaining a balance between speed and thoroughness.You demonstrate humility and collaboration by transforming zero-to-one ideas into tangible products, ensuring that you 'get things done' from start to finish. Utilizing AI, you work smarter and solve problems more efficiently. Here, you will confront complex, high-visibility challenges alongside exceptional teammates while advancing your career as we shape the future of global banking. If this resonates with you, let’s build what’s next together.What the Scale Team DoesEmbedded Finance Platform: Design and maintain the multi-tenant infrastructure that supports enterprises like Rippling, Navan, Qantas, and SHEIN. You will architect systems that consolidate requests from all platform clients, ensuring enterprise-grade SLAs for availability, latency, and throughput while managing cross-data-center scenarios.Cross-Domain Product Features: Own features requiring a synthesis of knowledge across business, regulatory, and technical domains—areas where no single existing team has complete coverage, such as tax systems, compliance-driven flows, or monetization tools.Solutions Architecture: Design integrations for enterprise prospects to enhance operational efficiency and drive growth.

About AirwallexAirwallex stands as the only integrated payments and financial platform tailored for global enterprises. Our unique blend of proprietary infrastructure and innovative software empowers over 200,000 businesses globally, including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN, offering fully integrated solutions for managing business accounts, payments, spend management, treasury, and embedded finance on a worldwide scale.Established in Melbourne, our team comprises more than 2,000 of the brightest minds in the tech industry across 26 global offices. Valued at US$8 billion and supported by world-renowned investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of constructing the global financial and payments platform of the future. If you are prepared to engage in the most ambitious work of your career, we invite you to join us.

Role Overview Airwallex is building the next generation of payments and financial services for businesses worldwide. The Senior Frontend Engineer on the Scale Team helps shape products used by more than 200,000 businesses, including well-known names like Brex and Qantas. What You Will Do Build and improve frontend solutions for Airwallex’s multi-tenant infrastructure Deliver high-performance features that meet enterprise standards Work closely with engineers, product managers, and designers to launch new features Tackle complex engineering challenges as part of a collaborative team Who We’re Looking For Experienced frontend engineer with a strong background in building scalable web applications Comfortable working in cross-functional teams Ready to solve complex problems in a collaborative setting Interest in fintech and a drive to make an impact Location London, UK

Join Airwallex as a Senior Account ExecutiveAre you ready to be part of the only unified payments and financial platform designed for global businesses? At Airwallex, we empower over 200,000 companies worldwide—including renowned names like Brex, Rippling, and Qantas—with fully integrated solutions for managing business accounts, payments, spending, treasury, and embedded finance on a global scale.Founded in Melbourne and now boasting a workforce of over 2,000 innovative tech professionals spread across 26 offices, we are valued at US$8 billion and backed by industry-leading investors such as T. Rowe Price, Visa, and Sequoia. If you're looking to embark on the most ambitious chapter of your career, we want you to join our team.What We ValueWe seek dynamic builders who possess a founder-like energy and desire to make a real impact. If you are an expert in your field, motivated by our mission and operating principles, and are capable of making swift and sound decisions, we want to hear from you. Collaboration, humility, and a passion for transforming ideas into tangible products are essential. If you thrive in tackling complex challenges alongside exceptional teammates, let’s shape the future of global banking together.We are currently on the lookout for a mid-senior to senior level Account Executive to enhance our SME & Growth team.Your primary mission will be to attract and onboard new SME clients. You will leverage your expertise in pitching, negotiation, and driving internal processes to ensure successful partnerships. A passion for building relationships and a commitment to revolutionizing global transactions will be key to your success.

About AirwallexAirwallex stands as the premier unified payments and financial platform for businesses operating on a global scale. Utilizing our distinctive blend of proprietary technology and software, we serve over 200,000 businesses worldwide—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—with comprehensive solutions that streamline everything from business accounts and payments to spend management and treasury, as well as embedded finance.Founded in Melbourne, we are proud to have assembled a talented team of over 2,000 innovators spread across 26 offices globally. Valued at US$8 billion, we are supported by top-tier investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, positioning Airwallex at the forefront of the future of global payments and financial services. If you are eager to tackle some of the most challenging work of your career, we invite you to join us.

About AirwallexAirwallex stands as the premier unified payments and financial platform for global enterprises. With our innovative blend of proprietary infrastructure and cutting-edge software, we empower over 200,000 businesses globally—including industry leaders such as Brex, Rippling, Navan, Qantas, and SHEIN—providing fully integrated solutions for managing business accounts, payments, spend management, treasury, and embedded finance on a worldwide scale.Established in Melbourne, our diverse team of over 2,000 talented individuals spans 26 offices worldwide. Valued at $8 billion and backed by renowned investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of developing the global payments and financial platform of the future. If you're ready to embark on the most impactful journey of your career, we invite you to join our mission.Attributes We ValueWe are in search of proactive builders with entrepreneurial spirit who are eager to make a significant impact, accelerate their learning, and take ownership. You will bring a wealth of role-specific expertise, sharp analytical skills, and a deep motivation aligned with our mission and operating principles. You move quickly with sound judgment, possess a curious mindset, and make decisions based on fundamental principles while balancing agility with thoroughness.You are humble and collaborative, capable of transforming innovative ideas into tangible products, and you excel at executing projects from inception to completion. Leveraging AI to enhance productivity and resolve challenges is second nature to you. Here, you will engage with complex, high-stakes problems alongside exceptional teammates and advance your career as we shape the future of global finance. If this resonates with you, let’s create what’s next together.We are seeking an Account Executive to join our SME & Growth team.At Airwallex, we aim to collaborate with the most ambitious businesses worldwide. The SME & Growth sales team is the gateway to these partnerships. Your main responsibility will be acquiring new SME clients (50 - 500 employees) and utilizing your expertise in pitching, negotiating, and streamlining internal processes to ensure our collaborations thrive.We are looking for a candidate who is passionate about relationship building, sales, and negotiation, with a vision to transform the way companies transact on a global scale.

About AirwallexAirwallex stands as the premier unified payments and financial platform tailored for global enterprises. Our unique blend of proprietary infrastructure and innovative software empowers over 200,000 businesses worldwide—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—with fully integrated solutions that streamline everything from business accounts, payments, spend management, and treasury, to embedded finance on a global scale.Founded in Melbourne, we boast a talented team of over 2,000 of the brightest minds in technology across 26 offices globally. With a valuation of US$8 billion and support from top-tier 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 are ready to embark on the most ambitious journey of your career, we invite you to join us.

About Airwallex Airwallex builds payments and financial platforms for global businesses. Over 200,000 companies, including Brex, Rippling, Navan, Qantas, and SHEIN, use Airwallex to manage business accounts and treasury operations worldwide. Founded in Melbourne, Airwallex has grown to a team of more than 2,000 tech professionals across 26 offices. The company is valued at US$8 billion and backed by investors such as T. Rowe Price, Visa, and Mastercard. Role Overview: Frontend Engineer for Scalable Solutions (London, UK) This role focuses on building and refining frontend systems that support Airwallex’s large-scale financial products. Work from the London office as part of a diverse, global team shaping how businesses move and manage money across borders.

Join Our Team as a Transaction Monitoring Lead, EMEAAt Airwallex, we are revolutionizing the way global businesses manage their payments and financial operations. Our cutting-edge, unified payments platform empowers over 200,000 businesses worldwide—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—by providing seamlessly integrated solutions for business accounts, payments, spend management, treasury, and embedded finance on a global scale.Founded in Melbourne, we boast a diverse team of over 2,000 innovative thinkers across 26 global offices. With a valuation of $8 billion and support from top-tier investors, such as T. Rowe Price, Visa, Mastercard, and Sequoia, we are at the forefront of building the future of global banking. Ready to make a significant impact? Join us!Your RoleAs the Transaction Monitoring Lead for the EMEA region, you will spearhead our financial crime operations team. Your leadership will set the standards for transaction monitoring and sanctions screening, ensuring a smooth and secure experience for our customers across Airwallex's suite of products. You will execute TM risk assessments, tune rules, and develop segmentation and profiling strategies, all while safeguarding Airwallex from financial and reputational risks.

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.

About Tilt At Tilt, we are on a mission to Make Commerce Alive. Our platform revolutionizes the traditional e-commerce landscape, moving away from outdated website builders and faceless marketplaces to create vibrant, community-driven experiences for the new generation of merchants. With millions of engaged shoppers across the UK, from sneaker enthusiasts to collectors, Tilt empowers sellers to achieve remarkable earnings, often exceeding £1M. We are just getting started!Your Mission As our Lead Data Engineer, you will take charge of shaping and advancing our comprehensive data platform. This is a hands-on role with significant ownership where you will oversee the architecture, reliability, and scalability of our data warehouse and analytics stack. Your expertise will help refine our existing systems, including Snowflake, Dagster, dbt, Postgres, Metabase, and ContextFlow, while establishing standards for intelligent growth. We seek an individual who not only writes SQL but deeply understands data, thinks critically, and designs enduring systems.What You’ll Do 0–3 monthsGain an in-depth understanding of our Snowflake warehouse architectureAudit and enhance existing dbt models for clarity and performanceStabilize and review Dagster orchestration pipelinesIdentify data quality gaps and implement rigorous testing standardsEnsure key dashboards in Metabase are based on reliable datasetsDocument current systems and define architectural standards3+ monthsRedesign and optimize warehouse architecture where necessaryImplement scalable data modeling patterns across various domainsEnhance cost efficiency and performance in SnowflakeIntroduce advanced observability, testing, and lineage practicesEnable AI and product features by structuring high-quality, production-ready datasetsEstablish clear version control and deployment workflows for data changesCollaborate with product and engineering teams to define data contracts and ownership

Join Attio: Pioneering the Future of CRM in the AI EraAt Attio, we are on a transformative journey to innovate CRM solutions tailored for the AI-driven landscape. Our aspiration is to build the first AI-native CRM system, specifically crafted for the most ambitious go-to-market teams. With our recent $52M Series B funding, led by GV (Google Ventures) and supported by key investors like Redpoint, Balderton, Point Nine, and 01A, we are excited to tackle complex technical challenges. Our goal is to not only delight our users but also to set a new industry standard.About the RoleOur engineering team is dedicated to solving the most intricate challenges, ensuring our users have a seamless experience. We are building real-time infrastructure and AI-native architecture, complemented by an effortless frontend, all powered by a fast-moving team that values rigorous thinking and exceptional quality.We seek Engineering Leads who are enthusiastic about creating outstanding teams that push the boundaries of innovation, focus on the finer details, and revolutionize the way millions work. This role involves both hands-on technical contributions and leading a small, specialized group of engineers.

About LendableLendable is dedicated to revolutionizing access to credit and savings through cutting-edge technology. As one of the UK's most promising fintech companies, we have established ourselves as a leader in the industry:Recognized as one of the UK’s newest unicorns with a diverse team exceeding 700 professionals.Ranked among the fastest-growing tech companies in the UK.Achieved profitability since 2017.Supported by prominent investors including Balderton Capital and Goldman Sachs.Celebrated by customers with exceptional reviews (4.9 from thousands on Trustpilot).We have successfully reimagined the Big Three consumer finance products: loans, credit cards, and car finance, enabling our customers to access funds in minutes rather than days.Our growth trajectory is ambitious as we target the UK and US markets, where traditional banks still rely on outdated systems and cumbersome processes.Why Join Us?Embrace Ownership: Make impactful decisions that shape the success of Lendable from day one.Collaborate with a Talented Team: Work within small, agile teams of innovative thinkers who prioritize problem-solving.Develop Cutting-Edge Technology: Utilize new data sources, machine learning, and AI to enhance our operational efficiency.About the RoleAs part of our commitment to diversifying our team, we are excited to welcome a Lead Kotlin Engineer. This role will empower you to contribute your unique insights and skills to our engineering discussions, ultimately helping us deliver sophisticated solutions to complex challenges. Join a tech team of approximately 80 skilled professionals who have transformed finance by creating a next-generation lending platform, credit card, and auto-finance products.