Fullstack Engineer, Investigator Tools

Sardine; Ireland; Remote; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Generous cash and equity compensation

Remote-first culture

Flexible time off

Job summary

Sardine is hiring a Full Stack Engineer for a remote-first role based in Ireland. You will bridge backend systems and user interfaces to help stop fraud in real time, with ~60% backend and 40% frontend work.

You’ll build data-intensive apps and graph-based tools for fraud analysts, owning features end-to-end at scale. Join a fast-moving team that values ownership and product-focused delivery, collaborating across Design, Data, Product and Account Management.

Qualifications

• Core technical stack: TypeScript, Node.js, React, Go.
• Scale and data expertise with data-intensive applications.
• Pipeline proficiency in data modeling and production data pipelines.
• High-growth startup adaptability and independent execution.

Responsibilities

• Own features end-to-end from problem space to UX execution and iteration.
• Translate complexity to usable interfaces for analysts and users.
• Build and optimize graph systems to visualize fraud rings and enable fast searches.
• Collaborate with Design, Data, Product and Account teams to align engineering output with needs.
• Diagnose, triage and resolve bugs while delivering efficient, scalable code.

Tools

TypeScript

Node.js

React

Go

Job description

Who we are:

Sardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine’s platform is strengthened by one of the fastest-growing fraud consortiums in the market, spanning more than 6 billion profiled devices, 800 million consumers, and 3 million businesses worldwide. Leading companies including FIS, GoDaddy, Intuit, Edward Jones, ZoomInfo, and Checkout.com rely on Sardine to secure and grow trust in their products.

Our culture:

• We hire talented, self-motivated individuals with extreme ownership and high growth orientation.

• We value performance and not hours worked. We believe you shouldn't have to miss your family dinner, your kid's school play, friends get-together, or doctor's appointments for the sake of adhering to an arbitrary work schedule.

• We're a remote-first team spread across time zones, so no office to report to - work from wherever helps you do your best work. Just a couple of things to keep in mind: pay is based on where you're located, and you'll need to keep a home base in the country you're hired in. So while we love the "coffee shop today, mountains tomorrow" life, this isn't a passport-optional, work-from-anywhere-on-Earth kind of remote - think flexible within your country, not borderless.

Location:

• Remote - Ireland

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. On average, you will be working 60% on backend development and 40% on frontend development but are willing to help out wherever is needed. You will build out data-intensive applications, including advanced graph systems used to uncover complex fraud rings. You will own features end-to-end at a massive scale, ultimately empowering fraud analysts to uncover and investigate suspicious transactions faster than ever before.

What you’ll be doing:

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.

What you’ll need:

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 we offer:

• 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

• Health insurance, dental, and vision coverage for employees and dependents - US and Canada specific

• 4% matching in 401k / RRSP - US and Canada specific

• 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

Join a fast-growing company with world‑class professionals from around the world. If you are seeking a meaningful career, you found the right place, and we would love to hear from you.

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