Senior Software Engineer, Backend

Flex is building an AI-native private bank and integrated financial system for business owners. The Senior Software Engineer, Backend will work across the stack with a focus on backend systems, leading the design and delivery of financial products, platform services, card processing, issuing, and transaction ledgering. The role includes end-to-end ownership of projects, architecture, mentorship, and operational support.

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 ability to solve problems and find solutions for the servicing team

Requirements:

• We are open to candidates from Canada, the United States, and Colombia
• • 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 are ready to grind
• • Have built and shipped a working project or product, ideally something complex