Senior Software Engineer

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.

Join Anthropic as a Research Engineer specializing in the Science of Scaling, where you will play a pivotal role in advancing cutting-edge AI technologies. Collaborate with a dynamic team to explore innovative solutions that enhance our understanding of scalability in artificial intelligence systems.

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 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.

Join Scale's rapidly expanding Global Public Sector team dedicated to leveraging AI to solve pressing challenges within the public sector worldwide. We focus on:Developing tailored AI applications that will positively affect millions of citizens.Producing high-quality training data for bespoke LLMs.Providing upskilling and advisory services to amplify AI’s impact.As a Senior Full Stack Software Engineer (Forward Deployed), you will work closely with public sector partners to swiftly develop full-stack AI applications that address their critical issues and create significant benefits for citizens.At Scale, we are not merely creating AI solutions—we are empowering the public sector to innovate their operations and enhance citizen services through advanced technology. If you are eager to influence the future of AI in the public sector and become a pivotal member of our team, we would love to connect with you.

Join our innovative team at getscope as a Senior Software Engineer. In this pivotal role, you will design, develop, and implement cutting-edge software solutions that will drive our projects forward. Collaborate with cross-functional teams to translate business needs into technical requirements while ensuring high quality and performance of applications.

Join Runna as a Senior Software Engineer II, where you'll play a pivotal role in enhancing our software solutions. You will collaborate with cross-functional teams to design, develop, and implement robust applications that meet our customers' needs. Your expertise will help us push the boundaries of technology, ensuring our products remain at the forefront of the industry.

About the PositionWe are seeking a highly skilled and motivated Senior Software Engineer - Generalist to join our innovative team at Anza. This role is pivotal in enhancing our Agave client and the overarching Solana network, focusing on performance, reliability, and security.About UsAnza is a cutting-edge R&D lab focused on the Solana blockchain, dedicated to revolutionizing blockchain performance and scalability. With a team of seasoned executives and core engineers, we tackle the most pressing challenges in the Web3 space. We believe in the power of collaboration and transparency, building robust protocols that can support the crypto ecosystem's growth and security.Your ResponsibilitiesDevelop and optimize our technical infrastructure, particularly the Agave client within the Solana ecosystem.Design and implement testing frameworks to simulate adversarial attacks and proactively identify vulnerabilities.Analyze performance metrics to pinpoint and resolve bottlenecks.Collaborate with subject matter experts to understand and define performance requirements for code components.Benchmark new solutions to enhance system reliability and performance.Work alongside cross-functional teams to architect solutions focused on scalability, security, and optimal performance.Contribute to all stages of the software development lifecycle, ensuring seamless transitions through development, staging, and production.Document architecture and processes to promote standardization and knowledge sharing across teams.

Join a Revolutionary CompanyAt Palantir, we are redefining the landscape of software designed for data-driven decision-making and operational efficiency. Our innovative platforms enable partners to make significant advancements—from developing life-saving pharmaceutical solutions to predicting supply chain challenges and reuniting families with missing children.Position OverviewThe Substrate team at Palantir is at the forefront of our core production infrastructure, managing hundreds of Kubernetes (K8s) clusters across diverse environments including on-premises setups and leading cloud services. As a Senior Software Engineer within Substrate, you will spearhead the design and development of our managed Kubernetes offerings, ensuring they operate seamlessly across all scenarios.In this role, you and your team will lead the deployment and management of our K8s clusters, achieving complete automation with zero manual intervention through the creation of cutting-edge tooling and contributions to core Cloud Native Computing Foundation (CNCF) components. You will play a vital role in maintaining scalability, stability, and security across a varied landscape of compliance standards and hosting infrastructures. Our team culture is anchored in engineering excellence and operational rigor, prioritizing proactive issue resolution and significant investments in automation and self-healing technologies.If you are passionate about large-scale infrastructure and Kubernetes, this opportunity is tailored for you.

About the Role Shawbrook Bank is looking for a Senior Software Engineer in London. This role focuses on building software that supports business growth and improves efficiency. Collaboration with other engineers and teams is central to the work. What You Will Do Develop and maintain high-quality software tailored to customer needs Work closely with colleagues to deliver solutions that support the bank’s goals Contribute technical expertise to projects and ongoing improvements

Join Multiverse as a Senior Software Engineer specializing in Platform Engineering. In this pivotal role, you will leverage your expertise to design, build, and enhance our platform, ensuring it meets the highest standards of performance and reliability. Collaborate with cross-functional teams to deliver robust solutions that drive the success of our innovative programs.

Join our dynamic team as a Senior Software Engineer at Faculty, where innovation meets technology. In this pivotal role, you will be responsible for designing, developing, and maintaining cutting-edge software solutions that drive our projects forward. We're looking for a passionate engineer who thrives in a collaborative environment and is eager to tackle complex challenges.Your expertise will guide our team in implementing best practices in software development, ensuring high-quality code and optimal performance. You will work closely with cross-functional teams to deliver impactful products that enhance our customers’ experiences.

Role overview Entain is looking for a Senior Software Engineer in London to help shape its technology landscape. This role involves building software solutions that improve the user experience for gaming and entertainment products. Collaboration with skilled teams is central to the work, as is staying current with new technologies.

Role overview Entain seeks a Senior Software Engineer based in London. The position centers on designing, building, and refining high-performance applications that drive key business objectives. Collaboration is a core part of this role, with regular interaction across multiple disciplines to deliver dependable software solutions. What you will do Develop and improve software applications, focusing on performance and scalability Work with cross-functional teams to bring features from initial idea through to deployment Offer technical insight that helps guide Entain’s technology strategy

Join our talented team to create the leading training platform for runners!At Runna, we empower everyday runners to excel by developing an exceptional app that offers world-class training, coaching, and a vibrant community for everyone—from improving 5k times to training for marathons.Our growth is remarkable! In November 2023, we secured a $6.5M funding round led by JamJar, with contributions from Eka Ventures, Venrex, and Creator Ventures. In 2024, we were honored to be one of three global finalists for the iPhone App of the Year by Apple, showcasing our innovation and impact. By 2025, we became part of Strava, further accelerating our journey!Our vision is ambitious: to be the premier global training platform for millions of runners worldwide. As we grow with intention, we seek individuals eager to contribute to something meaningful that leaves a lasting legacy. With the backing of Strava, now is an exciting time to be a part of our journey. The Team You'll JoinWe are in search of innovative, creative, and positive collaborators to become part of our skilled cross-functional engineering team. You will be part of the Train Team, collaborating closely with our modeling teams to integrate essential features aligned with Runna's mission, such as adapting plans for holidays and B races, supporting cutting-edge training plans, and enhancing in-app experiences using our AI/ML tools.You will partner with our CTO and engineering leadership to help shape the future of Runna, receiving unwavering support throughout this thrilling journey. Our roadmap is packed with opportunities to champion new technologies, tackle significant challenges affecting millions of runners, and enhance our existing architecture to elevate our engineering team.Your ResponsibilitiesDesigning, developing, testing, and delivering innovative features across the full stack.Collaborating with the Product team to determine the best solutions for optimal customer experiences.Working with modeling/AI engineers to design the architecture that interfaces between the Runna training engine and the Runna app.Providing technical support to team members as needed.Mentoring and coaching engineers in your team, offering guidance and code reviews while avoiding bottlenecks.

Role overview Based in London, the Senior Software Engineering Manager for Quality Engineering at Sony Interactive Entertainment Global leads a talented group of engineers. The position centers on defining and executing the strategy for software quality and performance across projects. Main responsibilities Shape the strategic direction for the quality engineering team Mentor and guide engineers, supporting their professional development Establish and maintain effective software testing practices Encourage ongoing improvement within the team Collaborate with cross-functional partners to ensure quality standards are met throughout the software development lifecycle Collaboration and impact This leadership role bridges engineering and quality, making sure software products meet rigorous standards from initial planning through release. Regular interaction with teams across Sony Interactive Entertainment Global helps to maintain and raise quality expectations company-wide.

Role overview The Senior Software Engineer I at Runna will play a key part in shaping how users interact with the company’s products. The work centers on designing, developing, and maintaining applications that support a strong user experience. Expect to take a hands-on approach, working closely with colleagues from different teams to deliver solutions that scale and perform reliably. Location This role is based at the Runna office in London.

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 Our Team as a Senior Software Engineer IIAt Runna, we are assembling a skilled team dedicated to creating the premier training platform for runners. Our innovative app empowers everyday runners to achieve their best, offering world-class training, coaching, and community support for everyone from 5k enthusiasts to marathon first-timers.We are experiencing rapid growth! In November 2023, we successfully completed a $6.5M funding round led by JamJar, with contributions from Eka Ventures, Venrex, and Creator Ventures. Our app was recognized as one of three global finalists for Apple's iPhone App of the Year in 2024, showcasing the groundbreaking impact of our work. In 2025, we proudly joined the Strava family!Our goal is ambitious: to be the leading training platform for millions of runners worldwide. With our recent acquisition by Strava amplifying our mission, now is an exciting time to become part of something truly meaningful. Your Future TeamWe seek talented, innovative, and collaborative individuals to join our cross-functional engineering team. You will be an integral member of our newly formed Strength Team, collaborating with our modeling engineers and Team Strava to revolutionize strength training for athletes.You will work closely with our CTO and engineering leadership to shape the future of Runna, receiving support throughout this exhilarating journey. With a dynamic roadmap filled with opportunities, you will champion new technologies, solve meaningful challenges for millions of athletes, and enhance our existing architecture to elevate our engineering efforts.Your ResponsibilitiesArchitect, develop, test, and deploy new features across the full technology stack.Collaborate with the Product team to identify optimal solutions for an exceptional user experience.Partner with modeling and AI engineers to design the architecture that connects the Runna training engine with the Runna app.Provide technical assistance and mentorship to team members as needed.Guide and support fellow engineers through mentorship and code reviews, ensuring smooth workflows without bottlenecks.Contribute to operational efficiency by building and maintaining our development infrastructure.