(Senior) Software Engineer - Payments Team (API & Checkout Experience)

Who We AreAbout StripeStripe is at the forefront of revolutionizing financial infrastructure for businesses worldwide. Our innovative platform empowers millions of organizations—from industry giants to dynamic startups—to accept payments seamlessly, drive revenue growth, and unlock new business avenues. Our mission? To elevate the GDP of the internet, an ambitious goal that presents you with an extraordinary opportunity to play a pivotal role in shaping the global economy while making a significant impact in your career.About the TeamThe Payments team is the cornerstone of Stripe’s offerings, processing trillions of dollars in transactions each year. As a member of this team, you will have the chance to broaden the capabilities of Stripe’s global payments network, design and implement cutting-edge payment solutions, and ensure top-tier reliability and performance.As a Software Engineer, you will be instrumental in steering pivotal decisions for the company. Collaborate with fellow engineers to develop engaging features that resonate across various system components, and partner with our business, sales, and operations teams to address and resolve user challenges effectively.

Key Responsibilities:As a Software Engineer, you will be instrumental in designing and developing innovative devices for an integrated e-payment Fare Collection System in collaboration with our esteemed client. You will engage in the full software development lifecycle, including requirement analysis, design, development, and rigorous testing. Key responsibilities encompass:Collecting and analyzing user requirements.Crafting and implementing software applications for embedded systems.Optimizing communication protocols (such as TCP/IP, HTTPS, FTPS/SFTP, MQTT-S) to establish secure and reliable connections between embedded devices and cloud/on-premises platforms.Conducting comprehensive testing, debugging, and troubleshooting of embedded devices to ensure optimal functionality, performance, and reliability.Creating and delivering essential documentation throughout the Software Development Lifecycle (SDLC), including Business Rules, Software Requirement Specifications, Software Architecture Documents, and more.Providing ongoing application support and addressing user inquiries related to requirements and production issues.

Role Overview Grab Holdings Inc. is looking for a Lead Backend Software Engineer with a focus on payments to join the team in Singapore. This role centers on building secure, efficient, and scalable payment systems that support millions of users across Southeast Asia. What You Will Do Design and implement backend services for payment solutions that improve user experience and support business growth. Collaborate with engineers, product managers, and other teams to deliver reliable and high-performance payment infrastructure. Mentor junior engineers and help guide their technical development. Promote backend engineering best practices across the team. Contribute to architectural decisions that shape the future of Grab’s payments platform. What We’re Looking For Strong experience with backend technologies and payment systems. Ability to lead technical discussions and mentor less experienced engineers. Comfortable working across teams to deliver scalable, reliable solutions. Solid understanding of designing secure and efficient backend services.

About AirwallexAirwallex is an innovative global payments and financial platform that unifies payment solutions for businesses around the world. We leverage a proprietary blend of technology and infrastructure to empower over 200,000 companies, including notable names such as Brex, Rippling, Navan, Qantas, and SHEIN, by providing comprehensive solutions for business accounts, payment processing, spend management, treasury, and embedded finance on a global scale.Founded in Melbourne, Airwallex prides itself on a diverse team of more than 2,000 talented individuals across 26 offices worldwide. As a company valued at $8 billion and supported by leading investors like T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, we are at the forefront of developing the future of global payments and finance. If you're eager to take on challenging work that could define your career, we invite you to join our team.

Join Our Team at AirwallexAirwallex is revolutionizing the way global businesses manage their payments and finances. Our cutting-edge, unified payments and financial platform empowers over 200,000 businesses worldwide—ranging from Brex to SHEIN—with seamless solutions for everything from business accounts to embedded finance on a global scale.Founded in Melbourne and now boasting over 2,000 talented professionals across 26 global offices, we are valued at US$8 billion and supported by top-tier investors including T. Rowe Price, Visa, and Mastercard. At Airwallex, we are committed to building the future of global banking, and we invite you to make your mark with us.

Join Grab as a Principal Engineer for Payments, where you will be at the forefront of transforming digital payment solutions in Southeast Asia. You will lead a team of talented engineers to design and implement scalable payment systems that enhance user experience and drive business growth.Your expertise will contribute to innovative solutions that meet the diverse needs of our customers, ensuring seamless transactions across various platforms. This is an exciting opportunity to shape the future of payments in a rapidly evolving market.

About AirwallexAirwallex is revolutionizing the way global businesses manage their payments and finances. As the sole unified payments and financial platform tailored for international operations, we leverage our proprietary infrastructure and software to offer integrated solutions to over 200,000 businesses globally, including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN. Our suite of services encompasses business accounts, payments, spend management, treasury solutions, and embedded finance on a global scale.Founded in Melbourne and now operating with a talented team of more than 2,000 across 26 offices, Airwallex is valued at US$8 billion. We are backed by top-tier investors, including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, positioning us at the forefront of the global payments and financial technology landscape. If you're eager to embark on an ambitious journey in your career, we invite you to join us.Attributes We ValueWe seek builders who exhibit founder-like enthusiasm and are committed to making a significant impact. You should possess robust expertise and insightful thinking, driven by our mission and operating principles. You move swiftly with sound judgment, explore with curiosity, and make principled decisions, balancing speed with thoroughness.Collaboration and humility are key; you can transform innovative concepts into tangible products and take ownership from start to finish. Utilizing AI to enhance efficiency and solve challenges is essential. Here, you'll confront complex, high-profile challenges alongside exceptional teammates while advancing your career as we shape the future of global banking. If this resonates with you, let's create what's next.

Responsibilities:- Innovate and engineer robust solutions for payment terminal applications compatible with various Android-based devices (Ingenico, PAX, Castles), ensuring seamless integration with diverse host systems utilizing standard protocols such as ISO8583, Web APIs, and JSON, as well as merchant POS systems (Electronic Cash Register - ECR).- Transform user requirements into secure, reliable, and maintainable source code, ensuring thorough testing, documentation, and code reviews.- Engage in EMV L3 certification processes alongside international payment schemes like Visa, Mastercard, AMEX, UnionPay, JCB, and Discover. Familiarity with the PURE kernel is a plus.- Aid in the creation of testing tools and implement test automation frameworks as integral parts of the development lifecycle.- Collaborate effectively with internal teams (QA testers, POS developers, Support, and Certification team) throughout the software development lifecycle, facilitating troubleshooting and resolving issues in both pre-production and post-production settings.- Support external collaborations for application integration with NETS partners.

Join our dynamic Payments & Wallet team (also affectionately known as PAW ) at Coinhako, where we spearhead innovation in asset management, compliance, and On-chain Services & Integrations (Superwallet).In this pivotal role as a Senior Engineer, you will architect, develop, and maintain high-performance services that underpin our payments and wallet infrastructure. Collaborate with cross-functional teams to ensure seamless system integrations, optimize transaction workflows, and enhance platform reliability and scalability.

As an Engineering Manager II specializing in Payments at Grab, you will lead a dynamic team of engineers to drive the development of cutting-edge payment solutions. You will play a pivotal role in shaping the future of digital payments in Southeast Asia, ensuring our services are efficient, secure, and scalable.In this role, you will collaborate closely with product managers, designers, and other stakeholders to deliver innovative solutions that meet the diverse needs of our users. You will mentor junior engineers, fostering a culture of continuous learning and improvement within the team.

About AirwallexAirwallex is a pioneering unified payments and financial platform designed for global enterprises. By harnessing our proprietary infrastructure and innovative software, we empower over 200,000 businesses globally—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—with comprehensive solutions that encompass business accounts, payments, spend management, treasury, and embedded finance at a worldwide scale.Founded in the vibrant city of Melbourne, our team comprises over 2,000 of the brightest minds in technology across 26 global offices. Valued at $8 billion, we are supported by renowned investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital. Join us in shaping the future of global payments and finance.Attributes We ValueWe seek dynamic builders with an entrepreneurial spirit who aspire to create a meaningful impact, accelerate their learning, and embrace true ownership in their work. You bring substantial expertise, sharp analytical skills, and are driven by our mission and operating principles. You thrive on speed and good judgment, possess a deep curiosity, and make principled decisions while balancing expedience with thoroughness.You are collaborative and humble, transforming innovative concepts into tangible products, and you ensure that tasks are completed effectively from start to finish. Utilizing AI to enhance efficiency and solve challenges swiftly is part of your approach. Here, you will tackle complex, high-stakes issues alongside exceptional colleagues and advance your career as we redefine global banking. If this resonates with you, let's create what's next together.What You’ll DoAs a crucial member of the Search Platform Team, you will expertly bridge the gap between business needs and architectural excellence. Your responsibilities will include:Developing advanced application infrastructure to mitigate widespread challenges across the organization, significantly reducing maintenance costs for developers and fostering innovation;Skillfully addressing complex, organization-wide challenges through the strategic implementation of cutting-edge technologies such as distributed systems, vector databases, and data pipeline solutions;Conducting comprehensive evaluations of strategic solutions on an organization-wide scale.

About AirwallexAirwallex stands as the premier unified payments and financial platform designed for global enterprises. With our unique blend of proprietary technology and software, we empower over 200,000 businesses globally—such as Brex, Rippling, Navan, Qantas, and SHEIN—with comprehensive solutions that streamline everything from business accounts and payments to spend management and treasury, along with embedded finance on a global scale.Founded in Melbourne, our team comprises over 2,000 of the brightest minds in technology, operating from 26 offices worldwide. With a valuation of US$8 billion and support from industry-leading investors including T. Rowe Price, Visa, and Mastercard, Airwallex is at the forefront of constructing the future of global payments and financial platforms. If you're ready to embark on the most ambitious journey of your career, we invite you to join us.Attributes We ValueWe seek dynamic builders with an entrepreneurial spirit who desire significant impact, rapid learning, and genuine ownership. You bring a wealth of expertise and acute analytical skills while being motivated by our mission and operating principles. You act swiftly and judiciously, remain inquisitive, and make decisions based on fundamental principles, skillfully balancing speed and thoroughness.Being humble and collaborative, you transform innovative ideas into tangible products and ensure tasks are executed from start to finish. You leverage AI to enhance productivity and solve challenges swiftly. Here, you will take on intricate, high-stakes issues alongside exceptional colleagues and advance your career as we shape the future of global banking. If this resonates with you, let’s innovate together.About the RoleWe are on the lookout for talented Senior Software Engineers to influence and enhance Airwallex’s edge infrastructure—you will architect and develop the software foundations that drive Airwallex’s global edge. Your responsibilities will include crafting high-quality code, designing scalable services, and owning comprehensive features that elevate our API gateway, CDN layer, DNS routing, and perimeter security, making them smarter, faster, and more resilient.You will collaborate closely with product, platform, and security experts to convert real-world requirements into clean, maintainable code—and witness your contributions serve millions of requests daily.

Join Our Team at AirwallexAt Airwallex, we are revolutionizing the way global businesses manage their payments and financial operations. Our unique platform, powered by proprietary infrastructure and advanced software, supports over 200,000 businesses worldwide, including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN. We offer fully integrated solutions that streamline everything from business accounts and payments to spend management and treasury functions on a global scale.Founded in Melbourne, we pride ourselves on having a diverse and talented team of over 2,000 innovators across 26 global offices. With a valuation of US$8 billion, and backed by some of the world's most prestigious 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 future of global payments and financial technology. If you're ready to take on ambitious challenges and make a significant impact in your career, we invite you to join us.What We Look ForWe are on the lookout for builders with a founder-like mindset, who are passionate about making a real difference, eager for accelerated learning, and excited about taking ownership of their work. Your strong expertise, sharp analytical skills, and alignment with our mission and operating principles are crucial. You should be able to act swiftly with sound judgment, explore deeply with curiosity, and make decisions based on first principles while balancing speed with thoroughness.We value humility and collaboration; you will have the chance to turn innovative concepts into tangible products, taking projects from inception to completion. Utilize AI technologies to enhance your efficiency and problem-solving capabilities. Here, you will confront complex, high-stakes challenges alongside exceptional colleagues while advancing your career as we shape the future of global banking. If this resonates with you, let’s create what’s next together.About the Issuing Engineering TeamThe issuing engineering team at Airwallex is responsible for developing and maintaining the core systems for card issuing, transaction processing, and global settlement. Our team oversees mission-critical platforms that support Airwallex’s issuing products, with a strong emphasis on reliability, scalability, and compliance. Key areas of responsibility include:Cards: Management of customer-facing and internal systems for card lifecycle management, controls, and configuration.Transactions: A high-throughput, global transaction processing platform optimized for low latency, high availability, and resiliency.Settlement: Management of clearance, settlement, and dispute workflows to ensure financial accuracy and compliance with schemes.

About AirwallexAirwallex stands as the leading unified payments and financial platform designed for global enterprises. Leveraging our unique blend of proprietary technology and software, we empower over 200,000 businesses worldwide, including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN. Our comprehensive solutions encompass business accounts, payments, spend management, treasury services, and embedded finance on a global scale.Founded in Melbourne, we boast a team of over 2,000 talented and innovative tech professionals across 26 global offices. With a valuation of US$8 billion and support from world-class 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 revolutionizing the global payments and financial landscape. If you are prepared to embark on the most ambitious journey of your career, we invite you to join us.Attributes We ValueWe seek exceptional builders with an entrepreneurial mindset who are eager to make a significant impact, accelerate their learning, and take true ownership. You should possess strong expertise relevant to your role, analytical thinking, and a passion for our mission and operating principles. Your ability to act swiftly with sound judgment, explore in-depth with curiosity, and make decisions based on foundational principles while balancing speed and thoroughness is essential.We value humility and collaboration; transforming innovative ideas into tangible products while ensuring that you effectively deliver results from start to finish. Utilizing AI to enhance productivity and streamline problem-solving is encouraged. Here, you will confront complex, high-visibility challenges alongside exceptional teammates and grow your career as we shape the future of global banking. If this resonates with you, let's create what comes next together.About the TeamThe Risk Platform team at Airwallex is charged with overseeing risk management across all Airwallex products, including GTPN, PA, Issuing, Onboarding, and Account Takeover. The risk environment is continuously evolving, with fraudsters employing increasingly sophisticated tactics. We are at the cutting edge of innovation in risk management.Our mission is to safeguard Airwallex's products and services, establishing Airwallex as a trusted partner for businesses globally. We utilize advanced technologies such as graph databases, machine learning, and large language models to refine and advance our strategies.Collaboration with other teams and our customers worldwide is integral to ensuring a comprehensive approach to risk management.

About AirwallexAirwallex is a pioneering unified payments and financial platform designed for global businesses. Our innovative combination of proprietary infrastructure and software allows us to empower over 200,000 businesses worldwide, including notable names like 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, we are proud to have grown to a team of over 2,000 talented and innovative tech professionals across 26 offices worldwide. With a valuation of US$8 billion, backed by world-class 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 developing the future of global payments and financial solutions. If you're ready to embark on the most ambitious journey of your career, we invite you to join us.

About AirwallexAirwallex stands as the premier unified payments and financial platform tailored for global enterprises. With our distinctive blend of proprietary infrastructure and cutting-edge software, we empower over 200,000 businesses worldwide—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—with comprehensive 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. Valued at US$8 billion and backed by 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 developing the future of global payments and finance. If you're ready to embark on the most ambitious venture of your career, we invite you to join us.Attributes We ValueWe seek passionate builders with an entrepreneurial spirit who aspire to make a significant impact, accelerate their learning, and embrace true ownership of their work. You should possess strong expertise relevant to the role, coupled with sharp analytical thinking, and be driven by our mission and operating principles. You act swiftly with sound judgment, explore deeply with curiosity, and make informed decisions based on first principles, balancing speed and thoroughness.You embody humility and collaboration, turning innovative ideas into tangible products while ensuring tasks are completed from start to finish. You leverage AI to enhance productivity and accelerate problem-solving. Here, you’ll engage with intricate, high-impact challenges alongside exceptional colleagues and advance your career as we redefine the landscape of global banking. If this resonates with you, let's create the future together.About the TeamThe Global Treasury and Payment Network (GTPN) Team is integral to Airwallex’s payment infrastructure. Our focus is on broadening the reach of Airwallex’s global treasury and payment network while enhancing its capabilities, user experience, and offering innovative payment products anchored in a robust financial foundation.Your RoleAs we extend our global presence, we are on the lookout for enthusiastic software engineers to join our dynamic team. This is a unique chance to work closely with product managers and designers from around the world, crafting products that not only fulfill but surpass our customers' expectations.This opportunity is based in Singapore.

About AirwallexAirwallex is a pioneering unified payments and financial platform crafted specifically for global enterprises. With our proprietary technology and software, we empower over 200,000 businesses globally—including notable names such as Brex, Rippling, Navan, Qantas, and SHEIN—with seamless solutions for managing business accounts, payments, expenditure, treasury, and embedded finance at an international scale.Founded in Melbourne, we boast a diverse team of over 2,000 talented and innovative professionals across 26 global offices. With a valuation of US$8 billion, supported by top-tier investors like T. Rowe Price, Visa, Mastercard, and Sequoia, Airwallex is at the forefront of redefining the global payments and financial landscape. If you're eager to embark on the most ambitious journey of your career, we invite you to join our mission.

As a Test Engineer, you will play a crucial role in the comprehensive testing lifecycle of our integrated e-payment system. This includes planning, designing, executing, and automating tests, as well as tracking defects and analyzing performance metrics.Key Responsibilities: Lead the end-to-end testing processes for our integrated e-payment solutions. Translate business and system requirements into actionable and effective test strategies. Establish and maintain robust test environments. Develop and implement both manual and automated test cases. Leverage scripting and programming languages to enhance test automation and performance tuning. Ensure comprehensive test coverage through meticulous traceability and gap analysis. Document and manage defects, ensuring timely resolutions. Collaborate with internal and external stakeholders to review test outcomes. Conduct root cause analysis for issues identified in production and UAT. Generate clear technical documentation and user guides for testing tools and solutions.

Join xcellink as a Software Engineer, where you will play a crucial role in the design and development of innovative devices for an integrated e-payment Fare Collection System. Your expertise will guide you through the entire software development lifecycle, from requirement definition to design, development, and rigorous testing.Key responsibilities include:Designing and building advanced applications for the Ubuntu platform.Collaborating with cross-functional teams to define, design, and implement new features.Unit testing code to ensure robustness, covering edge cases, usability, and reliability.Addressing bugs and enhancing application performance.Preparing and submitting necessary documentation throughout the software development lifecycle, including Business Rules, Software Requirement Specifications, Software Architecture Documents, Design Specifications, Interface Specifications, Source Codes, Testing Specifications, and Operation and Maintenance Manuals.Liaising with stakeholders to address requirements, design, and testing issues.