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Fullstack Engineer

Oneleet· Engineering
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Hybrid (US (remote))$120k - $180kFull-timePosted 3mo ago

About the role

Fullstack Engineer at Oneleet, a YC-backed security compliance platform. Remote (US) role building features across backend (Go) and frontend (TypeScript/React) end-to-end, collaborating with AppSec, design, and product.

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

Skills

Required:GoTypeScriptReactREST and/or gRPC APIsAPI designData transformationMonitoring/observabilityCustomer collaboration

Benefits

  • Comprehensive health & wellness benefits
  • 20 days PTO per year, plus 8 floating holiday
  • Remote work culture
  • Team off-sites in Amsterdam, Italy, and other locations
  • Competitive compensation & equity
Last updated Oct 7, 2026. Interested? Apply on the company site.
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About Oneleet

YC's most popular security compliance platform (SOC 2, ISO 27001,…

Oneleet helps companies become secure and compliant through an all-in-one solution that combines automated tools and human expertise. Oneleet has built the second generation of security compliance automation software, providing tools that go beyond what is classically provided for just compliance alone. Tools like a code security scanner, attack-surface management, access reviews and trust portal are all built in. As the most popular, highest rated and most frequently used platform in the YC community, Oneleet has quickly established itself as the preferred and superior alternative to other incumbents. The founder behind Oneleet has spent the past 10+ years helping companies become more secure by performing penetration tests.

artificial-intelligencesaasb2bcompliancesecurity
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