# Senior Fullstack Engineer at Spangle

- Company: Spangle
- What the company does: About SpangleAI Launched in 2025, Spangle AI is the agentic conversion layer connecting AI-led discovery to real-time conversion. Backed by Madrona.
- Company website: https://www.spangle.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: Austin, TX
- Work setup: On-site
- Posted: 2026-02-20
- Apply by: 2026-10-08
- Apply: https://ats.rippling.com/spangleai/jobs/724a2b2a-84fa-42fe-846e-0b6350c56edf
- Page: https://www.1752.vc/careers/jobs/spangle-senior-fullstack-engineer/

## About the role

We are seeking exceptional Senior Fullstack Engineers with deep expertise in client-side development to build our next-generation merchant experience platform.This role primarily focuses on: Client-side SDK development, Multi-tenant architecture, Enterprise integration frameworks and High-performance frontend systems. You will also contribute strategically to backend systems, including data modeling, infrastructure

## What they're looking for

- API & Backend Integration: Partner with backend engineers to integrate frontend logic with RESTful APIs and GraphQL services. Ensure secure, resilient communication between client-side SDKs and backend systems
- Performance & Scalability Optimization: Drive performance improvements through code splitting, lazy loading, image optimization, caching strategies, and runtime efficiency tuning
- Code Quality & Standards: Write clean, maintainable, and reusable code. Enforce best practices for accessibility (a11y), SEO, modular architecture, and automated testing
- Backend & Infrastructure Support: Contribute to data modeling, database schema design, infrastructure planning, and cloud deployment (AWS/GCP). Support CI/CD processes and production monitoring
- 5+ years of professional software development experience
- Proven experience building production-grade web applications in multi-tenant or enterprise environments

Tags: Engineering