Senior Mobile Engineer

Traveltechessentialist; Washington; On-site; USD 185,000 - 258,000; Full time

Benefits offered by this job

Travel perks

Generous time off

Parental leave

Flexible work model

Career development resources

Modern offices

Job summary

Expedia Group in Seattle is seeking a Senior Mobile Engineer to design, build, and maintain production mobile apps, ensuring scalable architecture, robust API integration, and data modeling for delightful customer experiences across platforms.

You will lead the implementation of complex mobile features end-to-end, partner with cross-functional teams, own mobile services through the full SDLC, and mentor teammates while upholding security, reliability, and performance standards.

Qualifications

• Bachelor’s degree in computer science or a related technical field or equivalent professional experience.
• 8+ years of relevant professional experience.
• Proven experience designing, implementing, and maintaining production mobile applications at scale.
• Expertise in mobile system design, API design, and data modeling for mobile apps and backend integrations.
• Experience owning one or more mobile services through the full software development lifecycle with proficiency in core mobile technologies and familiarity with AI-driven systems.

Responsibilities

• Design, build, and maintain high-quality mobile applications with robust architecture and API integration.
• Lead implementation of complex mobile features from design to deployment, optimizing performance.
• Collaborate with cross-functional teams to translate requirements into scalable mobile solutions and data flows.
• Ensure mobile apps meet security, reliability, and operational standards including monitoring and incident resolution.
• Safely integrate and operate AI/ML-enabled solutions to enhance mobile outcomes.
• Provide technical mentorship and promote best practices in code quality, testing, and CI/CD.

Skills

Mobile engineering

API design

Data modeling

Full SDLC ownership

Security & reliability

Mentorship

Education

Bachelor's degree in computer science or related field

Tools

iOS

Android

CI/CD

Job description

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success.

Why Join Us?

To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win.

We provide a full benefits package, including exciting travel perks, generous time‑off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We’re building a more open world. Join us.

In this role, you will:

• Design, build, and maintain high‑quality mobile applications, ensuring robust system design, API integration, and data modeling that deliver reliable customer experiences across platforms.
• Lead implementation of complex mobile features from technical design through deployment, applying strong knowledge of mobile architectures, patterns, and performance optimization.
• Collaborate with cross‑functional teams to translate product requirements into scalable technical solutions, driving clarity in low‑level design, API contracts, and data flows.
• Ensure mobile applications meet security, reliability, and operational standards, including monitoring, alerting, and incident resolution for owned services and components.
• Safely integrate and operate AI/ML‑enabled solutions that improve outcomes, including familiarity with AI‑driven systems, tools, or workflows and applying AI/ML concepts to real world products in mobile contexts.
• Provide technical mentorship within the team, promoting engineering best practices in code quality, testing, CI/CD, and mobile‑specific performance and reliability.

Minimum Qualifications:

• Bachelor’s degree in computer science or a related technical field; or Equivalent related professional experience.
• 8+ years of relevant professional experience.
• Proven experience as a mobile engineer designing, implementing, and maintaining production mobile applications at scale.
• Demonstrated expertise in mobile system design (including low‑level design), API design, and data modeling for mobile applications and backend integrations.
• Experience owning one or more mobile services or components through the full software development lifecycle, including design, implementation, deployment, and operational support, with strong proficiency in core mobile technologies, tools, and frameworks and familiarity with AI‑driven systems, tools, or workflows and applying AI/ML concepts to real world products.

Preferred Qualifications:

• Deep experience designing and evolving mobile architectures and patterns for complex applications, including API and data model evolution to support new capabilities and cross‑platform experiences.
• Track record of improving operational excellence for mobile services, such as enhanced observability, performance tuning, reliability engineering, and incident prevention in large‑scale production environments.
• Experience integrating mobile applications with multi‑service or domain‑level backend systems, ensuring clear contracts, resilience, security, and efficient data access patterns across services.
• Safely integrates and operates AI/ML‑enabled solutions that improve outcomes, such as personalization, recommendations, or intelligent assistance within mobile experiences, including experimentation and measurement of impact.
• Hands‑on experience using AI‑driven developer tools, workflows, or platforms to enhance mobile engineering productivity, code quality, or testing, and leading teams in evaluating and adopting emerging AI capabilities in the mobile development lifecycle.

Accommodation requests

If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request.

We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award‑winning culture by organizations like Forbes, TIME, Disability:IN, and others.

Expedia Group's family of brands includes: Brand Expedia®, Hotels.com®, Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®, CarRentals.com™, and Expedia Cruises™. © 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: 2029030-50

Employment opportunities and job offers at Expedia Group will always come from Expedia Group’s Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you’re confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com/jobs.

Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. This employer participates in E-Verify. The employer will provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization.

The total cash range for this position in Seattle is $184,500.00 to $258,000.00. Employees in this role have the potential to increase their pay up to $295,000.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the role.

Starting pay for this role will vary based on multiple factors, including location, available budget, and an individual’s knowledge, skills, and experience. Pay ranges may be modified in the future.

Expedia Group is proud to offer a wide range of benefits to support employees and their families, including medical/dental/vision, paid time off, and an Employee Assistance Program. To fuel each employee’s passion for travel, we offer a wellness & travel reimbursement, travel discounts, and an International Airlines Travel Agent (IATAN) membership.