# Fullstack Engineer
**Company:** [Oneleet](https://hotfix.jobs/companies/oneleet)
**Location:** Remote
**Experience:** 5+ years
**Skills:** Go, JavaScript, TypeScript, React, REST APIs, gRPC, Data Transformation, Asynchronous Programming, Monitoring, Observability Tools
**Posted:** 2026-05-28
> Build features end-to-end across Go backend and React/TypeScript frontend for a cybersecurity compliance platform. Own APIs, UIs, monitoring, and customer-driven iteration at a Series A startup.
## Job Description
## Key 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

## Qualifications
- 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

## Perks & Benefits
- Comprehensive health & wellness benefits
- 20 days PTO per year, plus 8 floating holidays
- Remote work culture
- Team off-sites in stunning places (Amsterdam, Italy, etc.)
- Competitive compensation & equity
**Apply:** https://hotfix.jobs/jobs/fullstack-engineer-at-oneleet-872afad4-5517-411b-abbf-60fefa95d96c
**Canonical:** https://hotfix.jobs/jobs/fullstack-engineer-at-oneleet-872afad4-5517-411b-abbf-60fefa95d96c