We are seeking a passionate and skilled Senior Software Engineer who wants to work on a cutting-edge product that powers application cloning and replay functionality. You will contribute across the stack, with a strong focus on JavaScript/TypeScript, DOM manipulation, and browser technologies. This is an exciting opportunity to work on a product that solves one of the biggest challenges in enterprise software sales: failed demos.

CUSTOMER

This is a fast-growing SaaS startup founded in the USA in 2018. It operates in the demo platform domain and serves thousands of enterprise users worldwide. Backed by leading venture capital firms, the company values diversity, innovation, and a culture focused on action and real impact.

PROJECT

The project is a cutting-edge demo creation platform that transforms how enterprise sales teams present complex software. Our goal is to reduce engineering dependencies, streamline the demo creation process, and provide customers with seamless, interactive experiences.

At this stage of development, we are focused on developing core cloning functionality, optimizing performance algorithms, and enhancing our Chrome extension and editor platform. This offers exciting opportunities to work on high-impact features in a fast-moving environment. Our dedicated team of engineers, product managers, and designers collaborate closely to deliver production-ready solutions for a market-leading SaaS product in the demo creation domain.

Develop and deliver complex features for the Chrome extension, editing platform, and replay rendering system
Implement high-performance solutions for DOM diffing, tree traversal, and state synchronization
Write high-quality, test-driven, and maintainable TypeScript/JavaScript code, with Back-end Django/Flask support
Debug and resolve production issues and contribute to continuous integration pipelines
Collaborate closely with product managers and Senior engineers to shape technical decisions and quickly deliver value to Customers
Mentor Junior engineers, share knowledge, and promote the adoption of best engineering practices across the team
Adapt to evolving startup priorities, contributing to both technical and process improvements

5+ years of experience with JavaScript and TypeScript with deep understanding of modern programming language features and reactive frameworks (React, Vue, and Solid)
Skilled at solving complex problems involving DOM structures, Virtual DOM, tree diffing, and state synchronization
Experience with Chrome APIs, service workers, client-side rendering pipelines, and browser internals
Proficient in object-oriented design, algorithms, and data structures with a strong foundation in computer science
Experience with the software development lifecycle, test-driven development, CI/CD pipelines, and scalable architecture
Adept in debugging, serialization/deserialization of HTML, performance optimization, and building replay systems for user interactions
Familiarity with Back-end frameworks (Django, Flask), REST APIs, and cloud-native environments (Docker, Kubernetes)
Knowledge of microservices, event-driven approaches, and Agile development practices

PERSONAL PROFILE

Strong communication, mentorship, and collaboration skills to work effectively in cross-functional teams

Passion for startup culture and ability to adapt to a fast-paced environment

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