Senior Staff Software Engineer - Full Stack

About Button

Button is building the future of the commerce powered internet — enabling performance marketing and monetization at scale across marketplaces, brands, and creators. We’re creating products that unlock new value at the intersection of discovery, engagement, and conversion. Button’s Mission is to empower the companies shaping the creator and affiliate economy - fueling mobile growth with innovation and new paths to monetization. Our vision is an internet where all marketing is performance-based, everyone wins, and our innovation in the creator and affiliate economy lays the foundation for a new era of growth.

What you'll do

You'll define the technical architecture and engineering direction for Button's core products at organizational scale. These systems power commerce experiences used by millions of people and help partners and internal teams activate and understand those experiences. This is a hands-on role: you'll set technical vision across teams, resolve competing architectural directions, write production code, build proofs of concept, and take zero-to-one projects to production, working closely with Engineering and Product leadership on strategy. Our stack includes React, TypeScript, Go, NodeJS, Python, Docker, and AWS.

• Define full-stack architectures for large-scale systems, drive adoption across teams, resolve competing technical directions, and set the standards other engineers build on
• Stay hands-on: write high-quality production code, build proofs of concept, and own zero-to-one projects end to end, from idea through design, implementation, and launch
• Work across teams and domains, contribute quickly, and connect systems architecturally at the company level
• Own business-critical, highly ambiguous technical problems, breaking them into coordinated workstreams, aligning teams, and delivering against our most important product goals
• Apply machine learning where it adds real product value, and lead ML from prototype to production, including deployment, evaluation, and monitoring
• Partner with Product leadership to tie engineering roadmaps to company strategy and anticipate the business's technical needs
• Raise the bar on engineering practices (code quality, testing, system design, maintainability) and operational health (SLOs, incident management, reliability)
• Develop senior engineers into technical leaders through mentorship, sponsorship, feedback, and by modeling technical excellence

What you need to be successful

• 10+ years building production systems at scale, and you still write excellent code, prototype quickly, and ship
• A track record of taking zero-to-one products or systems end to end into 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/TypeScript (React, NodeJS) and Go, plus strong Python experience, especially for ML and data work
• Strong command of web fundamentals (component architecture, state management, accessibility, performance) and sharp API design instincts for cross-team interfaces at scale
• A strong sense of, or direct experience with, ML, including productionizing Python ML systems: deployment, evaluation, monitoring, and iteration
• Ability to operate in high ambiguity: framing open-ended problems, aligning stakeholders, and driving company-level outcomes
• Experience owning reliability across teams, including 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 executives

What you'll get

• Compensation: U.S. base salary range of $205,000–$265,000. Final offer depends on skills and experience relative to the role's requirements.
• Comprehensive Health Coverage: 100% company-paid premiums for employee base medical coverage, with ~80% coverage for spouse, partner, and dependent care. Options include both traditional plans and a High Deductible Health Plan (HDHP) paired with a Flexible Spending Account (FSA) or Health Savings Account (HSA).
• HSA Company Contribution: For employees enrolled in the HDHP, the company contributes up to $1,800/year for individuals ($150/month) and up to $3,000/year for families ($250/month).
• 401(k) Retirement Plan: Automatic 3% company contribution starting after 30 days, completely independent of employee contributions and 100% vested immediately (with both traditional pre-tax and Roth options).
• Annual "Treat Yourself" Stipend: A $500 annual wellness and personal stipend to spend on vacations, spa days, personal electronics, or home goods.
• Monthly Tech & Connectivity Stipend: $130 per month ($1,560 annually) to cover cell phone and home internet expenses.
• Home Office Setup Allowance: A one-time $400 stipend for new hires to customize their workstation, equipment, and ergonomic office setup.
• Wellness & Fitness Perks: Subsidized fitness benefits, including discounted Peloton memberships ($10/month) and covered NYC bike-share memberships.
• Concierge Healthcare: Complimentary One Medical membership providing 24/7 on-demand virtual care and prioritized in-person appointments.
• Time Off: Unlimited time off (including your birthday), plus summer and winter company breaks
• Employee Assistance Program (EAP)
• RemotePlus workplace: Work from anywhere, with an NYC hub, WeWork All Access memberships in select markets, regular coworking days, and social events

Button is committed to being a welcoming and inclusive workplace for everyone, and we are intentional about making sure people feel respected, supported and connected at work—regardless of who you are or where you come from. We value and celebrate our differences and we believe being open about who we are allows us to do the best work of our lives.

Button is an Equal Opportunity Employer. We do not discriminate against qualified applicants or employees on the basis of race, color, religion, gender identity, sex, sexual preference, sexual identity, pregnancy, national origin, ancestry, citizenship, age, marital status, physical disability, mental disability, medical condition, military status, or any other characteristic protected by federal, state, or local law, rule, or regulation.