At Flex, we're reimagining the financial workflow for entrepreneurs. Our comprehensive finance super app is tailored to the needs of business owners, aiming to revolutionize every aspect of financial services. The Opportunity We're targeting a vast revenue opportunity that has been largely overlooked by existing fintech solutions. Our focus lies in catering to mid-market businesses with revenues ranging from $3 million to $100 million. About the Role As a senior software engineer on our team, you'll work across the entire stack with a focus on back-end development, learning, and driving the creation of innovative financial products and experiences that empower our customers to reach their full potential. Key Responsibilities: - Lead large-scale projects related to card processing/issuing and core ledgering of financial transactions. - Contribute significantly to the development, design, and maintenance of our platform and services. - Design and architect well-thought-out services and data models ensuring our continued growth. - Own problems end-to-end, considering factors such as API contracts, data, scalability, security, observability, and metrics. - Lead by example and mentor engineers in all aspects of planning, development, and testing. - Drive best-in-class technology frameworks and tooling while staying current with the latest trends. Requirements: - Proficiency in NodeJS+Typescript and server design principles. - Understanding of architectural patterns for highly available, scalable, low-latency, asynchronous systems. - Ability to maintain high standards within yourself and the team. - Strong communication and interpersonal skills. - Capacity to evaluate technical directions and determine tradeoffs. - Tendency to make data-driven decisions on technical architecture and project prioritization. - Knowledge of modular monoliths and micro-services along with their benefits and challenges. - Experience with cloud-based providers 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. We value passion, determination, and honesty at Flex. We encourage candidates from unusual career paths and unique skill sets to apply. Join us in fostering diversity and driving success.