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# Senior Backend Software Engineer - APIs

- **Company:** Sbg, Inc.
- **Location:** New York, NY, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Databases, Distributed Systems, PostgreSQL, MongoDB, Ruby on Rails, Software Engineering, Systems Integration, Openapi, Concurrency, Backend, Integration Frameworks, Restful APIs, Webhooks, OpenSearch
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25303_9c0f07b11d60a437a18d09866af4545b

## About the Role

* 6+ years of backend software engineering experience.
 * Strong experience developing backend applications and REST APIs.
 * Experience with backend technologies.
 * Strong knowledge of SQL databases, ideally PostgreSQL.
 * Experience designing transactional systems or complex integration platforms.
 * Good understanding of distributed systems, concurrency and asynchronous processing.
 * Experience working with AWS or similar cloud platforms.
 * Comfortable taking ownership of technical projects while remaining hands-on., * Experience with marketplaces, booking systems, payments or e-commerce.
 * Knowledge of OpenSearch, MongoDB, webhooks or OpenAPI.
 * Experience building third-party integrations.

Ruby on Rails experience is beneficial but not essential. Strong backend engineers from other technology backgrounds are welcome., If you're an experienced backend engineer based in New York (or open to relocating) who enjoys building scalable APIs and solving complex technical challenges, I'd be happy to share more details.

## Description

* Design, build and maintain scalable backend services and REST APIs.
 * Develop APIs covering pricing, availability, reservations, booking changes and cancellations.
 * Solve complex problems involving concurrency, idempotency, retries and distributed system failures.
 * Improve and scale existing Ruby on Rails and PostgreSQL applications.
 * Build integrations with third-party booking platforms, hotel management systems and external partners.
 * Develop reliable systems to prevent duplicate bookings and inventory inconsistencies.
 * Work closely with Staff Engineers on architecture and technical decisions.
 * Improve system performance, testing, monitoring and reliability.