TestBox · 2 days ago
Senior Full-Stack Engineer (FrontEnd Focus)
San Francisco Bay Area
Full-time
Onsite
Senior Level
5+ years expTestBox is a fast-growing startup focused on transforming the software buying and selling process through innovative technology. They are seeking a Senior Full-Stack Engineer with a frontend focus to build intuitive user interfaces and collaborate closely with product design and backend teams.
Artificial Intelligence (AI)Software
Responsibilities
Build the rich, interactive user interfaces for our platform's core authoring tools, including tools for visual workflow creation and data management and visualization
Design, build, and modify API endpoints in our Django backend to support new user interfaces and ensure seamless data flow
Partner closely with product design to iterate on prototypes and deliver polished, high-quality user experiences
Establish the foundation for our frontend architecture, including our component library, state management strategy, and testing best practices
Collaborate with backend engineers on the Platform team to define and integrate with core platform services
Qualification
Required
5+ years of experience in software engineering, with a proven track record of building complex web applications
Deep expertise in multiple modern frontend frameworks (e.g., React, Vue, Svelte, etc.)
Proficiency with backend development, preferably with Python and Django
Experience designing, building, and consuming REST APIs
Preferred
Experience with data visualization libraries (e.g., D3.js) or building interactive, canvas-based interfaces
Experience working on developer tools or B2B SaaS products designed for technical users
Benefits
Generous equity package for meaningful ownership.
Prioritization of your professional growth, with dedicated career development support.
Flexible, unlimited PTO with a minimum expectation for recharge.
Mental Health benefits.
Fitness allowances.
Learning allowances.
Remote and office setup allowances to ensure productive and comfortable working environments.
Company
TestBox
TestBox create AI-powered demo and POC environments with custom data that mirrors your prospect's business, closing deals faster.
11-50 employees
Funding
Current Stage
Early StageTotal Funding
$24.15MKey Investors
Felicis
2025-10-28Series Unknown· $11.45M
2022-06-08Seed· $10M
2021-05-12Seed· $2.7M
Leadership Team
Sam Senior
Founder & CEO
Recent News
Alumni Ventures
2023-08-21
2022-06-11
Company data provided by crunchbase