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Fullstack Engineer, Investigator Tools

Sardine

Remote · Full-time · Remote · Posted Oct 14, 2026

At a glance

Employment
Full-time
Workplace
Remote
Location
Remote

About the role

  • As a Full Stack Engineer at Sardine, you will bridge the gap between complex technical backend systems and user-friendly interfaces to help us stop fraud in its tracks.
  • This is a dynamic, high-impact role where you will work on average 60% on backend development and 40% on frontend development.
  • You will build out data-intensive applications, including advanced graph systems used to uncover complex fraud rings, and own features end-to-end at a massive scale.

Responsibilities

  • Own features end-to-end: Drive the product lifecycle from determining the initial problem space and user needs, to technical modeling, UX execution, and iterative improvements based on vague requirements.
  • Translate complexity to usability: Build out complex technical systems into intuitive, user-friendly interfaces.
  • Build fraud-fighting tools: Develop and optimize advanced graph systems to visualize fraud rings, and build performant search tools that help analysts rapidly identify suspicious transactions.
  • Collaborate cross-functionally: Work tightly with Design, Data, Product, and Account Management teams to align engineering output with business and user needs.
  • Ensure system health: Proactively diagnose, triage, and resolve bugs while writing highly efficient and performant code.

Requirements

  • Core technical stack: Extensive experience writing efficient, production-ready code in TypeScript, Node.js, React, Go and other server programming languages.
  • Scale and data expertise: Proven experience working with data-intensive applications, complex workflows, and big data at scale.
  • Pipeline proficiency: Deep background in technical data modeling and building robust production data pipelines.
  • High-growth adaptability: The ability to thrive, execute, and deliver consistently in a fast-paced, high-growth startup environment.
  • Independent execution: A proven track record of taking extreme ownership of ambiguous problems and independently turning them into polished, scalable features.

Benefits

  • Generous compensation in cash and equity
  • Early exercise for all options, including pre-vested
  • Work from anywhere: Remote-first Culture
  • Flexible paid time off and Year-end break
  • MacBook Pro delivered to your door
  • One-time stipend to set up a home office — desk, chair, screen, etc.
  • Monthly meal stipend
  • Monthly social meet-up stipend
  • Annual health and wellness stipend
  • Annual Learning stipend

Workplace

  • Remote-first team spread across time zones with no office to report to.

Skills

  • TypeScript
  • Node.js
  • React
  • Go

Sardine

Fullstack Engineer, Investigator Tools

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