Senior Staff Software Engineer - Full Stack

Button is a company focused on empowering the creator and affiliate economy through innovative mobile solutions. The Senior Staff Software Engineer - Full Stack will define technical architecture and lead engineering direction for core products, ensuring high-quality production code and contributing to cross-team projects.

Responsibilities:

• Define full stack architectures for large scale systems, drive their adoption across multiple teams, resolve competing technical directions, and set the standards other engineers build on
• Stay hands on: regularly write high-quality production code, build proofs of concept, and own zero to one projects end to end, from ambiguous ideas through design, implementation, and launch
• Dive into projects across different teams and domains, contribute quickly and meaningfully, and connect the dots architecturally at the company level
• Own business critical technical problems with high ambiguity: decompose them into coordinated workstreams, align multiple teams, and ensure delivery against Button’s most important product goals
• Apply machine learning where it creates real product value, and lead the work of taking ML from prototype to production, including deployment, evaluation, and monitoring
• Partner with Product leadership to connect engineering roadmaps to company strategy, anticipating the technical needs of the business and shaping product direction
• Raise the bar across the organization on engineering best practices (code quality, testing, system design, maintainability) and operational health (SLOs, incident management, reliability investments)
• Develop senior engineers into technical leaders through mentorship, sponsorship, feedback, and modeling technical excellence

Requirements:

• 10+ years building production systems at scale, and you still write excellent code. You prototype quickly and you ship
• A track record of taking zero to one products or systems end to end, from open ended ideas to production
• Deep full stack expertise across UIs, APIs, backend services, and data infrastructure, with 5+ years leading system design and architecture across teams
• Strong fluency in JavaScript and TypeScript (React, NodeJS) and Go, plus strong experience with Python, especially as it applies to ML and data work
• A strong command of web development fundamentals (component architecture, state management, accessibility, performance) and excellent API design instincts for interfaces consumed across teams at scale
• A good sense of, or direct experience with, machine learning and what it takes to productionize ML systems in Python: deployment, evaluation, monitoring, and iteration
• The ability to operate at high ambiguity: frame complex open ended problems, align diverse stakeholders, and drive execution to outcomes that matter at the company level
• Experience owning reliability across teams: defining SLOs, leading incident response culture, and improving systemic operational health
• Deep experience with relational databases, distributed systems, and cloud infrastructure (AWS)
• A history of developing senior engineers into leaders, and the communication skills to build technical consensus and engage effectively with executives