Software Development Engineer II (full stack) at Expedia Group

| Bellevue
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ExpediaWhat we do

The burgeoning field of machine learning is poised to fundamentally change the software industry. We have the theory, the data, and the compute resources needed and now the challenge is to take ML out of the lab and into the real world so that it can help address actual user needs in real-time and at scale.

This is where our team comes in. The Lodging Sort team builds an ecosystem of services related to machine learning – services for scoring, simulation, analytics, diagnostics, business intent monitoring, historical trending, and predictive model conversion, validation, testing, tuning, and lifecycle management. This ecosystem of interconnected micro services splits up into three categories: model serving, data scientist-facing, and supplier-facing services.

Our cloud-hosted platform currently hosts a steadily growing set of clients spread across almost all the Expedia Inc. brands, multiple lines of business, and multiple problem domains. For each client, we work closely with the client dev team as well as their data science team, helping them use machine learning in production scenarios.

The primary goal of our Lodging platform is to allow data scientists to quickly and easily create new predictive models and deploy them into a production environment with no required service changes in a scalable, low-latency system.

The core use case of our platform is ordering hotel search results in the most optimal way possible for each request. 70% of hotel bookings happen from the first page of search results, and ~70% of Expedia’s revenue comes from hotel bookings, so getting that sort order right is hugely important. According to estimates, the sort team is responsible for a ~7% lift in overall lodging revenues.

What we use

The team uses a wide variety of technologies, frameworks, and tools every day, as we are a full stack team. We mainly code in Java, but there are some components written in Node.js, React.js, Scala, C#, SQL/HQL, and Python. We’ve invested heavily in AWS – our plan is to retire the vast majority of our data center-hosted pieces by the end of this year.

Do you use any of the following technologies? We do! Docker, ECS, AWS Lambda, Amazon Elastic Map Reduce, Elasticache (Redis), AWS Data Pipeline, Dynamo DB, Mongo DB, Amazon SNS, Amazon S3, PMML, Openscoring, TensorFlow, Netflix Hystrix, Netflix Archaius, MS SQL, Qubole, Amazon Athena, Splunk, Graphite, Grafana, Hive, Hue, AWS Cloudwatch, Presto, Chef, Spring Boot, JQuery, Thymeleaf, Highcharts, Google Protobuf, DataTables, and Hadoop.

How we Operate

Our team is based in Bellevue and uses a Kanban-like approach, with devs pulling work off a prioritized backlog on an ongoing basis, with checkpoints and demos every two weeks. We believe strongly in engagement, shared ownership, and empowerment. Team members put out code that they are proud of, identifying and filling any gaps as needed. We empower everyone on the team to make the decisions that they need to in order to get work done efficiently, with minimal management overhead.

Team members have areas of focus, but we stay away from siloing – every team member has the freedom and ability to work on anything the team owns.

Position Overview:

We're looking for full-stack devs who believe in continuous improvement (for themselves and for the systems they own), are not afraid to take on big challenges or ambiguity, and have an ambition to get things done.

  • You will write awesome software - scalable, performant, maintainable, resilient...stuff you'd be proud to put your name on!
  • You get to how ownership - find and fill gaps, and do what it takes to get the job done
  • You will make the team better by being part of it - work collaboratively with counterparts in product management, program management, and engineering and build a culture where the whole is greater than the sum of its parts
  • You will raise quality via good coding/testing practices and a committed desire for improvement
  • You will contribute to the design process for various features
  • You will support what you build using a DevOps mentality
You should have:
  • Strong background in data structures and algorithms
  • Excellent ability in Java, C#, or similar object-oriented language
  • Excellent organizational, interpersonal, and communication skills
  • And understanding of relational databases including SQL and NoSQL
  • Experience with automated testing, including unit, functional, and performance testing
  • Experience with Agile methodologies
  • Knowledge of distributed architecture and patterns


  • Java with knowledge of CPU and memory usage, debug real time multi-threading application and perform JVM tuning, deep understanding of Service Oriented Architectures, Domain Driven Design concept
  • Strong database design and optimization skills would be a big bonus
  • Experience with cloud development (AWS)
  • Previous experience working experience in Agile development process 
  • Experience working with geographically distributed team. 
  • Strong business/product acumen, able to communicate effectively with both technical and non-technical stakeholders
  • Customer focus

Expedia Group recognizes our success is dependent on the success of our people. We are the world's travel platform, made up of the most knowledgeable, passionate, and creative people in our business. Our brands recognize the power of travel to break down barriers and make people's lives better – that responsibility inspires us to be the place where exceptional people want to do their best work, and to provide them to tools to do so.

Whether you're applying to work in engineering or customer support, marketing or lodging supply, at Expedia Group we act as one team, working towards a common goal; to bring the world within reach. We relentlessly strive for better, but not at the cost of the customer. We act with humility and optimism, respecting ideas big and small. We value diversity and voices of all volumes. We are a global organization but keep our feet on the ground so we can act fast and stay simple. Our teams also have the chance to give back on a local level and make a difference through our corporate social responsibility program, Expedia Cares.

If you have a hunger to make a difference with one of the most loved consumer brands in the world and to work in the dynamic travel industry, this is the job for you.

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.

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Technology we use

  • Engineering
    • C#Languages
    • JavaLanguages
    • JavascriptLanguages
    • KotlinLanguages
    • PerlLanguages
    • PHPLanguages
    • PythonLanguages
    • RLanguages
    • RubyLanguages
    • ScalaLanguages
    • SqlLanguages
    • SwiftLanguages
    • AWSLanguages
    • jQueryLibraries
    • ReactLibraries
    • ReduxLibraries
    • ASP.NETFrameworks
    • CakePHPFrameworks
    • Ember.jsFrameworks
    • HadoopFrameworks
    • Node.jsFrameworks
    • Ruby on RailsFrameworks
    • SparkFrameworks
    • SpringFrameworks
    • CassandraDatabases
    • DB2Databases
    • HBaseDatabases
    • HiveDatabases
    • Microsoft SQL ServerDatabases
    • MongoDBDatabases
    • TeradataDatabases


Our new Seattle campus in Interbay is on the beach with sweeping views of the Puget Sound and Cascades.

An Insider's view of Expedia Group

What's something quirky about your company?

Everyone is obsessed with travel…Really! No matter who you are working with or run into in the halls you somehow always land on travel, where you have been, where you want to go or what is the next trip you are planning. Talk about a company with passion!



What's the biggest problem your team is solving?

In today's world, when you travel, you need things at your fingertips! Imagine you pull up your phone, click a few buttons, type some messages and get the answers to your travel needs quickly. That's what my team and I do - we give customers a rich experience to chat with a virtual assistant on any device and solve their travel problems right away!


Sr Technology Lead

What makes someone successful on your team?

Accept whatever starting point you have and creatively work with it to organically take a feature area, the team’s culture, and cross-org relationships to the next level. Don’t just take at face value your instructions, but turn every stone to solve user problems with joy and passion. The resulting impact is a sure sign of success.


Senior Technical Program Manager

What are some things you learned at the company?

What got you here today, will not get you there tomorrow. I believe this applies both organizationally and professionally; in order to maintain success, you must continuously evolve, challenge yourself, and take learnings from your mistakes.


Sr. Director, Finance

What are Expedia Group Perks + Benefits

Volunteer in local community
Day of Caring Volunteer Hours match
Friends outside of work
Eat lunch together
Intracompany committees
Check out our employee resource groups here:
Daily stand up
Open door policy
Team owned deliverables
Team based strategic planning
Group brainstorming sessions
Open office floor plan
Documented equal pay policy
Dedicated Diversity/Inclusion Staff
Unconscious bias training
Diversity manifesto
We act with humility and optimism, respecting ideas big and small. We value diversity and voices of all volumes.
Someone's primary function is managing the company’s diversity and inclusion initiatives
Health Insurance & Wellness Benefits
Flexible Spending Account (FSA)
Disability Insurance
Dental Benefits
Vision Benefits
Health Insurance Benefits
Life Insurance
Pet Insurance
Wellness Programs
Onsite Gym
Retirement & Stock Options Benefits
401(K) Matching
Company Equity
Employee Stock Purchase Plan
Performance Bonus
Match charitable contributions
Child Care & Parental Leave Benefits
Child Care Benefits
Generous Parental Leave
Flexible Work Schedule
Family Medical Leave
Adoption Assistance
Company sponsored family events
Vacation & Time Off Benefits
Generous PTO
Paid Volunteer Time
Paid Holidays
Paid Sick Days
Perks & Discounts
Casual Dress
Commuter Benefits
Stocked Kitchen
Fitness Subsidies
Professional Development Benefits
Job Training & Conferences
Tuition Reimbursement
Diversity Program
Lunch and learns
Online course subscriptions available
Customized development tracks

Additional Perks + Benefits

We believe everyone deserves - NEEDS - time away from the office and we encourage employees to take advantage of their paid time off. We offer travel discounts to make it even easier to get out and see the world.

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