Senior AdTech Software Engineer – AI-Driven Travel Ads

United States Digital Space LLC; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Expedia is seeking a senior software engineer to design, implement, and evolve high-quality backend services and data models. You will lead end-to-end delivery of complex features across multiple services, collaborating with product, architecture, and cross-functional teams to align on technical direction.

You will improve reliability, performance, and security through robust engineering practices, code reviews, automated testing, and CI/CD, while mentoring others and safely integrating

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.
• Professional software engineering experience that includes ownership of significant services or components within a multi-service or domain environment.
• Proven proficiency in designing and building backend or full-stack systems, including RESTful or similar APIs, data models, and integration patterns using industry-standard languages, frameworks, and tooling.
• Experience applying sound software engineering practices such as object-oriented or functional design, automated testing, code review, source control, and continuous integration/continuous delivery for production systems.
• Hands-on experience supporting services in production, including monitoring, troubleshooting, and resolving issues to maintain availability and performance, with familiarity using or integrating AI-driven tools in development or operations workflows.

Responsibilities

• Design, implement, and evolve high-quality software services and components, including system design, low-level design, API design, and data modeling to support scalable, reliable products.
• Lead end-to-end delivery of complex technical features across services or domains, including requirements clarification, solution design, development, testing, deployment, and ongoing operational support.
• Collaborate closely with product, architecture, and cross-functional engineering teams to define technical direction, align on standards, and ensure solutions meet business and customer needs.
• Improve the reliability, performance, security, and observability of services through robust engineering practices, including code reviews, automated testing, CI/CD, and production monitoring.
• Mentor and support other engineers through technical guidance, design reviews, and knowledge sharing, helping to raise the overall technical bar across the team and adjacent teams.
• 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 alignment with the company standards.

Skills

RESTful APIs

Backend systems

CI/CD

AI/ML experience

Code reviews

Education

Bachelor's degree in CS/Engineering or equivalent

Tools

Python

Java

Docker

Kubernetes

Job description

Expedia is seeking a senior software engineer to design, implement, and evolve high-quality backend services and data models. You will lead end-to-end delivery of complex features across multiple services, collaborating with product, architecture, and cross-functional teams to align on technical direction.

You will improve reliability, performance, and security through robust engineering practices, code reviews, automated testing, and CI/CD, while mentoring others and safely integrating