Fullstack Engineer

Oneleet

Fullstack Engineer developing end-to-end features for cybersecurity platform at Oneleet. Collaborating with cross-functional teams in a remote-first environment as part of a rapidly growing startup.

Posted 7/21/2026full-timeRemote • 🏈 Anywhere in North AmericaJuniorMid-Level💰 $90,000 - $120,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Fullstack Software Development with a focus on Go and JavaScript/TypeScript, building responsive user interfaces and production APIs. Capable of optimizing performance and collaborating effectively with customers and design partners.

Highest-signal resume keywords

Fullstack Software DevelopmentGo ProgrammingJavaScript/TypeScript ExpertiseAPI Development (REST/gRPC)User Interface Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Go ProgrammingJavaScriptTypeScriptAPI DevelopmentReactData TransformationAsynchronous ProgrammingDebuggingPerformance OptimizationMonitoring and Observability

Soft Skills

Strong CommunicationCustomer Collaboration

Industry Keywords

Production APIsUser EngagementError HandlingData MappingFeature Iteration

Tech Stack

Tools & technologies

GoGRPCJavaScriptReactTypeScript

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

2-4 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.

Benefits

Comp & perks

Comprehensive health & wellness benefits
20 days PTO per year, plus 8 floating holiday
Remote work culture
Team off-sites in stunning places (Amsterdam, Italy, etc).
Competitive compensation & equity