Senior Backend Engineers - 411060

Atrium; New York (NY); On-site; USD 190,000 - 210,000; Full time

Benefits offered by this job

Equity compensation

Hybrid work (4 days onsite)

Backend ownership

Leadership collaboration

Staff-level growth opportunities

Client benefits

Job summary

Atrium in New York City is hiring Senior Backend Engineers to build and scale the core booking platform and external API infrastructure. You will own backend services, third-party integrations, and critical platform decisions while delivering reliable, scalable systems that support growth.

You will work hands-on with production code, collaborate with a Staff Engineer, and help drive architectural choices. The role emphasizes strong fundamentals, rapid learning, and cross-functional teamwork in a

Qualifications

• 6+ years of professional software engineering experience, backend-focused.
• Experience designing and deploying complex backend systems.
• Strong API development and third-party integrations.
• Experience with transactional systems (bookings/payments).
• Relational database modeling and data consistency.
• Solid CS fundamentals and problem solving.
• Willingness to remain hands-on and code.
• Onsite in New York City four days per week.

Responsibilities

• Design, develop, and maintain scalable backend systems.
• Build and maintain external APIs for partners and AI agents to interact with live hotel inventory.
• Develop integrations for pricing, reservations, bookings, modifications, and cancellations.
• Design reliable transactional systems with data integrity.
• Own API design, backend architecture, and day-to-day technical decisions.
• Collaborate on foundational architecture and scalability.
• Model relational data for booking and new product categories.
• Establish reusable engineering patterns for future partner integrations.
• Partner with engineering, product, and cross-functional stakeholders to translate requirements into scalable solutions.
• Write, test, deploy, and maintain production code.
• Identify opportunities to improve performance, reliability, scalability, and efficiency.
• Contribute to a collaborative engineering culture focused on excellence.

Skills

Backend engineering

APIs & integrations

Relational databases

CS fundamentals

Technical ownership

Collaboration

Onsite NYC

Education

Bachelor's degree in Computer Science

Tools

Ruby on Rails

Node.js

PostgreSQL

AWS

Redis

Kafka

Datadog

OpenSearch

Job description

Client Overview

Our client is a profitable, Series B-funded technology company transforming how consumers access premium hotel amenities and experiences without requiring an overnight stay. The company operates a rapidly growing marketplace connecting consumers with leading hospitality partners through both B2B distribution solutions and a consumer-facing platform. With approximately 30% – 35% year-over-year growth, the business continues to expand its technology offerings, partnerships, and engineering organization. They are looking to add

Client Overview

Our client is a profitable, Series B-funded technology company transforming how consumers access premium hotel amenities and experiences without requiring an overnight stay. The company operates a rapidly growing marketplace connecting consumers with leading hospitality partners through both B2B distribution solutions and a consumer-facing platform. With approximately 30% – 35% year-over-year growth, the business continues to expand its technology offerings, partnerships, and engineering organization. They are looking to add Senior Backend Engineers to their team. The Engineering team values strong computer science fundamentals, technical excellence, sound judgment, and collaborative problem-solving. This is an opportunity to join a growing team where engineers have meaningful ownership, contribute to important architectural decisions, and build scalable technology supporting continued business growth.

Salary/Hourly Rate

$190k - $210k plus Equity, with some flexibility for exceptional candidates.

Position Overview

Our client is seeking two Senior Backend Engineers to help develop and scale the company's core booking platform and external API infrastructure. These engineers will build APIs that enable distribution partners and authorized AI agents to price, hold, book, modify, and cancel live hotel inventory. The Senior Backend Engineers will take ownership of backend services, third-party integrations, and technical decisions while developing reliable, scalable systems that support new hospitality experiences and product categories. This is a hands‑on individual contributor role for engineers who enjoy writing production code, solving complex technical challenges, and delivering meaningful improvements. Working closely with a Staff Engineer, the Senior Backend Engineers will contribute to foundational architecture while independently driving day‑to‑day engineering initiatives. The ideal candidate brings strong backend development experience, sound technical judgment, and the ability to learn unfamiliar technologies quickly. There is also an opportunity to grow toward Staff‑level responsibilities through demonstrated technical impact. Previous experience with Ruby on Rails, OpenSearch, or the hospitality industry is not required. The hiring team prioritizes strong engineering fundamentals, technical judgment, adaptability, collaboration, and the ability to learn new technologies quickly.

Responsibilities For Senior Backend Engineers

• Design, develop, and maintain scalable backend systems supporting a growing hospitality marketplace.
• Build and maintain external-facing APIs that allow distribution partners and authorized AI agents to interact with live hotel inventory.
• Develop integrations supporting pricing, reservations, bookings, modifications, and cancellations.
• Design reliable transactional systems where accuracy, consistency, and data integrity are essential.
• Take ownership of API design, backend architecture, and day-to-day technical decisions.
• Collaborate with senior engineers on foundational architecture and long-term platform scalability.
• Design relational data models supporting existing booking functionality and new product categories, including events, food, and beverage.
• Establish reusable engineering patterns that can support future partner integrations.
• Partner with engineering, product, and cross‑functional stakeholders to translate business requirements into scalable technical solutions.
• Write, test, deploy, and maintain high-quality production code.
• Identify opportunities to improve system performance, reliability, scalability, and engineering efficiency.
• Contribute to a collaborative engineering culture focused on technical excellence, continuous learning, and thoughtful problem‑solving.

Required Experience/Skills For Senior Backend Engineers

• 6+ years of professional software engineering experience, primarily focused on backend or platform development.
• Experience working within a strong engineering organization with established technical standards and engineering best practices.
• Proven ability to independently design, build, and deploy complex backend systems into production.
• Strong experience developing external-facing APIs and integrating with third‑party platforms.
• Experience building transactional systems involving bookings, payments, orders, reservations, inventory, or comparable workflows.
• Strong understanding of relational databases, domain modeling, data consistency, and backend architecture.
• Strong computer science fundamentals and the ability to solve complex technical problems.
• Demonstrated technical ownership and the ability to make sound architectural and engineering decisions.
• Excellent communication skills and the ability to collaborate effectively with engineers, product managers, and cross‑functional teams.
• High learning velocity, intellectual curiosity, and adaptability when working with unfamiliar technologies.
• Desire to remain hands‑on with coding rather than transition into a management‑only position.
• Ability to work onsite in New York City four days per week.

Preferred Experience/Skills For Senior Backend Engineers

• Experience with Ruby on Rails, Node.js, PostgreSQL, and AWS.
• Familiarity with Redis, Kafka, Datadog, and OpenSearch.
• Experience developing high-volume transactional platforms, marketplaces, payment systems, or booking applications.
• Experience building complex third‑party integrations and scalable API infrastructure.
• Background at an established technology company or high‑performing product engineering organization.
• Experience working in a rapidly growing startup environment.
• Familiarity with AI-assisted development tools, including LLM coding agents.
• Experience owning technical projects from initial design through production deployment.

Education Requirements

• Bachelor's degree in Computer Science or a related technical field preferred.
• Equivalent professional experience and demonstrated technical expertise will also be considered.

Benefits

• Competitive base salary of $190k - $210k.
• Equity compensation.
• Hybrid work arrangement, with four days onsite in Manhattan and remote Fridays.
• Meaningful ownership of backend systems and critical platform infrastructure.
• Direct collaboration with experienced technical leaders on architecture and engineering decisions.
• Opportunity to influence engineering practices and grow toward Staff‑level technical responsibilities.
• Ability to build scalable technology supporting a growing marketplace and expanding distribution partnerships.
• Client-provided benefits available, upon eligibility.