Greenhouse - Sr Fullstack Engineer
Greenhouse has led in hiring innovation for 10+ years. Our AI-powered platform empowers teams to make smarter, faster decisions and consistently hire top talent, transforming recruiting into a strategic engine for growth.
In this role, you will work across the entire application stack to deliver high-quality features for the Company. Your work will range from building net-new functionality to improving how data flows across the Company’s services at scale. This is a collaborative engagement where you will work closely with product, design, and engineering partners to ensure the platform remains performant, reliable, and user-friendly.
Who Will Love This Role
A Pragmatic Architect - You don’t just write code, you think about how systems connect. You enjoy refining data models and improving system architecture to support long-term scalability.
A Full-Stack Specialist - You are equally comfortable navigating a PostgreSQL query, styling a React component, or building a robust controller in Rails.
A Quality Advocate - You believe “done” includes comprehensive automated tests and clear documentation. You take pride in leaving the codebase better than you found it.
A Collaborative Problem-Solver - You thrive in an environment where code reviews are a dialogue and cross-functional collaboration is the norm.
What You’ll Do
Build, modify, and maintain features using Ruby on Rails, modern JavaScript frameworks (React), HTML, and CSS
Execute on high-impact projects
Ensure code is maintainable and aligned with established engineering standards
Contribute to the evolution of system architecture, including improvements to data transfer across services and ingestion pathways
Design and maintain RESTful APIs, webhook-driven integrations, and data exchange pathways with third-party systems
Diagnose and resolve complex integration issues to improve information flow
Design and update PostgreSQL data models, refactoring legacy models to improve performance and reduce complexity
Participate in production support during working hours, addressing bugs and escalations as needed
Use monitoring and observability tools to maintain application stability and support performance tuning
Participate in peer code reviews and provide constructive feedback
Produce technical documentation, including architecture notes, implementation guides, and runbooks
Write automated tests (unit, integration, and E2E) to ensure reliability and coverage
You Should Have
5+ years of experience writing and maintaining production-level code in a professional environment
Strong experience with Ruby and Ruby on Rails
Experience with JavaScript and React, plus solid HTML and CSS fundamentals
Deep understanding of MVC architecture and backend optimization
Proven ability to write efficient SQL, design relational data models, and optimize PostgreSQL performance
Experience building and consuming RESTful APIs and managing third-party integrations via webhooks
Proficiency with automated testing frameworks (e.g., RSpec, Jest, Cypress) and a commitment to test-driven practices
Ability to contribute to architectural discussions and implement solutions that operate effectively at scale
Comfort working in agile environments using standard development tools such as Git, CI/CD pipelines, and observability platforms
Interview Process
Silver Recruiter Screening.
Silver Technical Interview.
Client Screening interview.
Client Live coding Interview.
Client System Design Interview.
Client Behavioral Interview.