Senior Software Engineer, Backend

About Engine

Engine is the all-in-one travel and spend management platform trusted by 38K+ businesses and groups representing 1.8M+ travelers. We're the retailer and the rails of business travel, one of the fastest-growing companies in travel tech, built on a decade of proprietary technology, supply, and pricing no one else can replicate. Other travel and AI companies run on our infrastructure to book real trips, hold rates, and move payments, without building any of it themselves. We built it, AI-forward at every layer, from how travelers book to how the rails run. That work has earned recognition as one of Fast Company's Best Workplaces for Innovators (2025), TravelTech's Reservation Platform of the Year (2026), and one of Built In's Best Places to Work (2020–2026). We're looking for bold, ambitious people to help redefine how businesses manage and experience travel. Working here, you can expect exponential growth, an ambitious pace, full ownership, and high-caliber colleagues who push you to do the best work of your career. Every hire raises the bar.

Come outpace the ordinary and build the future of travel with us.

We are hiring for Senior Software Engineers, Backend, on multiple teams across our organization. Your application will be considered for any open positions that are a fit. Below the details of the role there is a short description of each team with an opening.

Your Mission

As a Senior Software Engineer at Engine, you’ll play a vital role in an environment where innovation meets collaboration. Here’s what you’ll take charge of:

Design and Implement: Craft innovative software systems and APIs that contribute to the success of Engine’s mission, focusing on scalability, security, and performance.

Collaboration: Collaborate with cross-functional teams, including Product and Data Science, to unlock new opportunities and deliver seamless experiences for our customers.

Ownership: Lead key initiatives that improve efficiency, enhance system performance, and drive customer satisfaction.

What You’ll Bring to Engine

We’re looking for someone who’s ready to make an impact and grow alongside us:

Experience: 5+ years of hands-on experience in designing, implementing, and maintaining highly available and high-performing distributed systems. You have a proven track record of building public-facing (consumer-grade) APIs and managing the complexities of versioning, deprecation, and consumption-based rate limiting. Experience with Node.js, TypeScript, Kotlin (or similar modern backend languages), and AWS is a plus.

Skills: You’re a problem-solver with a strong grasp of software design principles, scalability, and system architecture. You thrive in fast-paced, innovative environments and prioritize Domain-Driven Design.

Mindset: You’re ready to roll up your sleeves, collaborate, and deliver results that matter.

Pricing Team

The Pricing team builds the real-time systems that determine what every customer pays across our travel marketplace. We design and operate auction-based pricing engines, models informed by Machine Learning, and customer segmentation strategies — all running at scale across Lodging, Car Rentals, and Flights. Our work directly impacts conversion, revenue, and competitiveness, and the results are immediately measurable.

IDM Team

The Identity Management team owns authentication and authorization for Hotel Engine's customers. We operate the Auth0 tenant, shape the login experience, and partner with enterprise customers to deliver secure, reliable identity integrations — so every traveler, admin, and partner can access the right things, at the right time, with confidence.

Compensation Our compensation packages are based on several factors, including your experience, expertise, and location. In addition to a competitive base salary, all roles receive equity. Depending on the role, total compensation may also include an annual bonus. Your recruiter will share your complete compensation package as you move through the process.

Base Pay Range

$135,200 — $187,000 USD

The Engine Edge: Perks & Compensation We believe in rewarding great work with great benefits:

Compensation: Competitive base pay tied to role and experience, with equity for all employees. Some roles are also eligible for bonuses or commissions.

Benefits: Check out our full list at engine.com/culture