Senior Full-stack Engineer

You will be joining Gravity - our Core Platform team - the foundation that powers Sift's Digital Trust & Safety platform. We build the shared components, abstractions, and infrastructure that other engineering teams rely on to ship faster and smarter. Our customers are internal: we measure success by how much easier we make everyone else's job, and by keeping the platform maintainable, cost-effective, and built to last.

This role is intentionally full-stack. We need someone who can follow a problem wherever it lives - whether that's deep in backend logic or in a frontend component

BE Technical stack: Java, Dropwizard, GCP, Kubernetes, Kafka, BigTable, Spanner Graph DB, Postgres, Redis, gRPC, Python, Apache Airflow, Snowflake, BigQuery

FE Technical stack: ReactJS, React, React Query, React Router, Cypress, Jest, Storybook, SCSS

What you’ll do:

• Design and evolve highly scalable, distributed platform components that can reliably serve as shared building blocks across Sift’s ecosystem, even under heavy load
• Deliver engineering solutions that address complex, cross-cutting customer and platform needs at scale, reducing the effort required for product teams to ship features
• Collaborate closely with engineers within Gravity and partner teams to introduce and maintain shared services, data models, and libraries that multiple teams depend on
• Continuously improve our platform engineering practices, tooling, and guardrails to simplify secure, compliant, and cost-effective operation of core systems

• Experience: Participate in highload platform and technical challenges to improve our core platform components, as well as building new capabilities
• Professional growth: tri-annual Growth Cycles instead of performance review;
• Knowledge Sharing: we have Tech Talks sessions. You will learn how to build components that handle petabytes of data and high fault tolerance
• Culture for innovations: you can try your ideas on our bi-annual Hackathon

• 5+ years of experience building distributed backend systems using Java;
• 3+ years experience designing/delivering highly-available services;
• 2+ years of experience building React-based FE applications, preferable platform areas
• Experience with data pipelines
• Degree in Computer Science or equivalent experience
• Strong communication & collaboration skills - a team-first, product-first mindset

• Competitive total compensation package
• 401k plan
• Medical, dental, and vision coverage
• Flexible lifestyle wallet
• Learning & development wallet
• Flexible time off

At Sift, we are intentionally building a diverse, equitable, and inclusive workplace. We believe that diversity drives innovation, equity is a fundamental right, and inclusion is a basic human need. We envision a place where all Sifties feel secure sharing their authentic selves and diverse experiences with their teams, their customers, and their community – ultimately using this empowerment and authenticity to build trust and create a safer Internet.

This document provides transparency around how Sift handles the personal data of job applicants: https://sift.com/recruitment-privacy

A little about us:

Sift is the AI-powered fraud platform securing digital trust for leading global businesses. Our deep investments in machine learning and user identity, a data network scoring 1 trillion events per year, and a commitment to long-term customer success empower more than 700 customers to grow fearlessly. Global brands rely on Sift to unlock growth and deliver seamless consumer experiences. Visit us at sift.com and follow us on LinkedIn.