Heymarket is hiring a Core Experience Engineer – Senior Software Engineer to join our core product team. We are looking for a developer who thrives in fast-paced startup environments and enjoys building exceptional product experiences. You will work across the stack to solve complex problems, deliver new features, and help shape the future of demo automation.
What You'll Do
- 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
What We're Looking For
- 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
Technical Stack
- React
- Django
- REST
- GraphQL
- AWS
- GCP
- Azure
Team & Environment
You will collaborate closely with Product and Core Engineering teams.
Benefits & Compensation
- 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
Heymarket values experimentation, velocity, and impact, and is obsessed with customer experience, speed, and scale.



