Core Experience Engineer – Senior Software Engineer

We are seeking a Senior Software Developer who thrives in fast-paced startup environments and enjoys building exceptional product experiences. As a key contributor to our core product, you will work across the stack to solve complex problems, deliver new features, and help shape the future of demo automation.

Responsibilities

• Build and maintain core features across the TestBox platform (Front-End and Back-End)

• Take ownership of technical projects from design to deployment

• Collaborate with Product to deliver the right solutions for customers

• Contribute to technical decisions and direction alongside the Tech Lead and Engineering team

• Write clean, maintainable, and well-tested code

• Participate in code reviews and provide constructive feedback

• Debug and resolve production issues as part of the shared on-call rotation

Preferred Experience

• 4+ years of professional software development experience

• Full-stack experience (React, Django)

• Strong knowledge of API design and integrations (REST, GraphQL, or similar)

• Strong understanding of database systems (schema design, query optimization, data modeling)

• Familiarity with cloud infrastructure (AWS, GCP, or Azure)

• Comfort working in fast-paced, product-driven startup environments

• Proactive, ownership-driven mindset — you enjoy taking projects from concept to completion

• Excellent collaboration and communication skills

About TestBox

TestBox is on a mission to fundamentally transform how software is bought and sold. They’re building a platform that empowers buyers with transparent, interactive software experiences while equipping sellers with tools to deliver exceptional buying and onboarding journeys.

They are a fast-growing startup that values experimentation, velocity, and impact. Backed by world-class investors, we’re disrupting the traditional B2B sales motion.

Why Join TestBox

• Build foundational, greenfield systems from day one and make a significant impact

• Solve challenging UI/UX problems for a technical user base

• Define frontend architecture and best practices that will shape the company’s product long-term

• Join a company obsessed with customer experience, speed, and scale

Benefits

• Generous equity package for meaningful ownership

• Dedicated career development support

• Flexible, unlimited PTO with minimum recharge expectation

• Mental health benefits

• Fitness and learning allowances

• Remote and office setup support for a productive work environment