Fullstack Engineer

Oneleet•Beaverton, OR

1d•Remote

About The Position

As a Fullstack Engineer at Oneleet, you'll work across our entire stack to ship features that make our cybersecurity platform fast, reliable, and genuinely useful for security teams. You'll own features end-to-end — from backend services and APIs through to the UI components that customers interact with day-to-day. This is a hands-on engineering role at a Series A startup. You'll work closely with backend engineers, AppSec, design, and product to take features from mock-up to shipped product, and you'll engage directly with customers to iterate based on real-world usage. Working primarily in Go, TypeScript, and React, you'll help us ship fast without sacrificing reliability or design quality.

Requirements

5+ years of fullstack software development experience with expertise in Go and JavaScript/TypeScript
Strong experience building production APIs (REST and/or gRPC) and integrating with third-party services
Proven track record of building responsive, intuitive user interfaces with modern JavaScript frameworks (React preferred)
Experience with data transformation and mapping between different system formats
Strong understanding of asynchronous programming patterns and API optimization techniques
Solid debugging skills across the full stack — from backend services to frontend UI
Experience with production monitoring, logging, and observability tools
Experience gathering requirements from users and translating feedback into technical improvements
Strong communication skills and comfort working directly with customers
Ability to balance technical excellence with shipping features that provide immediate value

Nice To Haves

Background in cybersecurity or security tools
Experience building data visualization components
Experience with workflow engines and async job orchestration

Responsibilities

Build features end-to-end across backend (Go) and frontend (React/TypeScript)
Design and implement APIs that power dashboards, workflows, and reporting
Build UI components that present complex data clearly and drive user action
Map complex backend data to clear, actionable interfaces
Implement robust error handling and fallback behaviors for upstream service failures
Optimize end-to-end performance, including caching, pagination, and query design for high-volume data
Develop reusable patterns and components that scale across many areas of the platform
Work directly with customers and design partners to understand how features are used and iterate rapidly
Build monitoring and analytics to track feature usage, success rates, and user engagement
Collaborate with AppSec, backend, and design on how data flows from services through to the UI