> Markdown version of [/jobs/ext/3487887-senior-back-end-engineer](https://www.wearedevelopers.com/jobs/ext/3487887-senior-back-end-engineer). 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 Back-End Engineer - **Company:** Rechat Inc - **Location:** Spain (Remote available) - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Adaptable Database Systems, Application Programming Interfaces (APIs), Unit Testing, PostgreSQL, Node.Js, Performance Tuning, SQL Databases, Backend, Restful APIs, Sql Tuning - **Published:** September 18, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=8622640f95a1a2a9 ## About the Role We're looking for a backend engineer who lives and breathes clean architecture, loves solving complex data problems, and wants to build high-impact systems used by top agents across the United States. If you're passionate about Node.js, PostgreSQL, scalable APIs, and performance optimization-you'll feel right at home here., * Deep experience with JavaScript and Node.js * Strong proficiency with PostgreSQL and SQL performance tuning * A solid background in designing, building, and testing scalable backend services * Experience building and consuming APIs * A collaborative mindset and strong communication skills * Creativity in solving complex technical challenges, * High School Diploma or equivalent; five to seven years of relevant experience, or a combination of experience and education. * Bachelor's Degree preferred. ## Description * Architect, design, and maintain core services supporting our CRM and Marketing platforms * Build advanced, scalable data models tailored to the evolving needs of the real estate industry * Write efficient, high-performance SQL queries and optimize database operations * Develop high-quality features with robust unit and integration testing * Collaborate with Customer Success to understand real-world agent workflows and improve user experience * Influence architectural decisions to support long-term maintainability and growth * Partner with front-end developers and cross-functional teams to build cohesive, elegant solutions * Stay on top of industry trends and contribute ideas for new features and backend improvements * Lead projects when needed and help us continuously level up our engineering culture