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Senior Software Engineer - Virality

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Mercury

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Location:
United States; Canada , San Francisco

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Contract Type:
Not provided

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Salary:

166600.00 - 208300.00 USD / Year

Job Description:

At Mercury, we are committed to crafting an exceptional banking* experience for startups. Our team is passionately focused on ensuring our product not only meets but anticipates the needs of our customers. Our product engineering group is growing and we’re looking to hire a senior full-stack engineer. We’re a team of pragmatic, product-minded engineers motivated by the desire to create lovable products that rescue our customers from frustrating, expensive legacy industry tools. The Virality team exists to grow Mercury through our existing customers via network effects. We build experiences that make using Mercury contagious: when one business uses Mercury, their customers, partners, vendors, and clients want to join too.

Job Responsibility:

  • Help Mercury grow organically by building delightful, interconnected product experiences
  • Build products for high-value, well-connected nodes
  • Create tools for accounting firms, VCs, and incorporators that help them manage and onboard multiple client accounts
  • Create viral payment experiences
  • Make Mercury-to-Mercury payments instant, secure, and identity-aware
  • Build referral and partnership growth loops
  • Develop systems that make it effortless for customers and established partners to invite others
  • Design scalable systems and data models for interconnected account relationships
  • Build event-driven systems that tie payments, referrals, and onboarding into a cohesive ecosystem
  • Partner with design, product, and data science to prototype and A/B test new virality mechanisms
  • Make architectural decisions that balance experimentation speed with long-term scalability
  • Mentor other engineers and help define best practices for growth-oriented development

Requirements:

  • 3-7+ years of demonstrated full-stack experience working at the senior level or higher with a strong sense of ownership
  • Demonstrated experience independently driving projects from inception to completion
  • Full-stack experience, including proficiency in SQL and Haskell
  • Experience in or an interest in learning Typescript and React
  • Communicates and collaborates effectively with peers and cross-functional counterparts

Nice to have:

  • Enjoys exploring ambiguous, 0->1 product spaces with measurable impact
  • Thinks in terms of loops, ecosystems, and compounding effects, not just features
  • Balances creativity with rigor: excited to experiment, measure, and iterate quickly
  • Cares about user experience and how subtle product details drive real growth
What we offer:
  • Base salary
  • Equity (stock options)
  • Benefits

Additional Information:

Job Posted:
January 03, 2026

Employment Type:
Fulltime
Work Type:
Remote work
Job Link Share:

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