> Markdown version of [/jobs/ext/3656879-senior-software-engineer-marketplace](https://www.wearedevelopers.com/jobs/ext/3656879-senior-software-engineer-marketplace). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer, Marketplace - **Company:** The Ladders - **Location:** United States (Remote available) - **Experience:** Expert - **Salary:** $130,000.0 - $155,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Relational Databases, PostgreSQL, Object-Oriented Software Development, Performance Tuning, Ruby on Rails, Systems Integration, TypeScript, ReactJS, Marketplace, Webhooks - **Published:** October 9, 2026 - **Apply:** https://arc.dev/remote-jobs/j/redirect/pq00hkvh5g ## About the Role * 10+ years of experience as a software engineer * 3+ years of experience with Ruby on Rails * 2+ years of experience with ReactJS and Typescript * Strong understanding of object-oriented programming and relational databases like PostgreSQL * Expertise in integrating with external systems, APIs, and webhooks * Solid experience in architectural problem-solving and design * Excellent written communication skills ## Description This role will focus on building and improving a marketplace experience within the company's technology platform, with an emphasis on scalable features, strong architecture, and reliable delivery. You will partner closely with Product Managers, Designers, and Engineers to shape solutions from design through implementation. The work will involve integrating external systems and APIs, validating ideas through prototypes, and delivering well-tested code that supports high-quality user experiences., * Write maintainable code while implementing new features * Collaborate with Product Managers, Designers, and Engineers to deliver high-quality software * Engage in collaborative design and architecture of features * Deliver well-tested, maintainable, and performant code * Research and implement prototypes to validate assumptions * Review peers' code for quality and consistency * Participate in planning and designing features for the marketplace