Flex is building a finance super app for business owners. The company has grown revenue 25x+ and is on track to achieve profitability. We are targeting a ~$1T revenue opportunity that is largely up for grabs. The company is fully remote, and this role can be performed from anywhere. We are looking for engineers who want to be part of our early story and help us build a diverse company. As a senior software engineer, you will work across the entire stack with a focus on the back-end. You will have the opportunity to learn and drive the creation of financial products to help customers reach their full potential. You should have a strong sense of ownership and enjoy taking projects from inception to release. As an early employee, you'll be working with a nimble team of committed engineers and having a large impact on technical design and engineering culture. Responsibilities - Ownership over large domains and features related to card processing/issuing, and core ledgering of financial transactions. - Play a critical role in the development, design, and maintenance of Flex's platform and services. - Architect well-thought-out services and data models that ensure Flex's continued growth. - Own problems end-to-end, thinking through everything from API contracts, data, scalability, security, observability, and metrics. - Lead by example and mentor engineers in all aspects of planning, development, and testing. - Be a catalyst for driving best-in-class technology frameworks and tooling while staying engaged with the latest technology trends. - Be on call, with the expectation to solve problems and find solutions for the servicing team. Requirements - Proficiency in NodeJS+Typescript and server design principles. - An understanding and interest in architectural patterns for highly available, scalable, low-latency, asynchronous systems. - Ability to hold yourself and the team to high standards. - Strong communication (written and verbal) and interpersonal skills. - Ability to provide in-depth evaluation of multiple technical directions and determine tradeoffs of each. - Strong propensity to make data-driven decisions on technical architecture and project prioritization. - Exposure to modular monoliths and micro-services along with the benefits and challenges they bring. - Experience with any cloud-based provider like Google Cloud, AWS, or Azure. - Four or more years of relevant industry experience with a track record of shipping high-quality products and features at scale. - A strong work ethic and readiness to grind. - Have built and shipped a working project or product, ideally something complex.