Position Details

Salary $136K – $190K USD / year

Type Full-Time

Experience senior

Exp. Years 5+ years

Education Bachelor's or Master's degree in Computer Science or related field

Category Software Engineering

About this role

Software Development Engineer III on the Advertising Technology team builds real-time ad delivery, bidding, and ranking systems with high performance and reliability.

Key Responsibilities

Lead design and delivery of backend services for ad auction and bidding
Drive operational excellence
Run operational reviews and improve resilience
Collaborate with Product/ML teams on features
Apply AI/ML where appropriate

Technical Overview

Stack includes Java/Kotlin, gRPC/Protobuf, Flink/Kafka for streaming, cloud environments, distributed systems, and ML-powered features.

Ideal Candidate

The ideal candidate is a senior backend software engineer with 5+ years of experience building real-time, low-latency ad platforms, strong in Java or Kotlin, gRPC/Protobuf, and distributed systems, able to operate across Chicago and Seattle locations.

Must-Have Skills

Bachelor's or Master's degree in Computer Science or related field5+ years of backend software developmentExperience with data-driven systems or ML-powered featuresStrong proficiency in Java or KotlinExperience building and deploying backend APIs (e.g.gRPC/Protobuf) and streaming/batch data processing (Flink/Spark) in cloud environmentsDistributed systems understandingOperational best practices

Nice-to-Have Skills

Search/retrieval systemsrelevance rankingembeddingsAI/semantic searchAgent-to-agent AI systemsAdsmarketplacese-commerceor travel platform experience

Tools & Platforms

Apache FlinkApache KafkagRPCProtobufCloud environments

Required Skills

Bachelor's or Master's degree in Computer Science or related field5+ years backend software developmentdata-driven systems or ML-powered featuresJava or KotlingRPC/ProtobufApache FlinkApache Kafkacloud environmentsdistributed systemsbackend APIs

Hard Skills

JavaKotlingRPCProtobufApache FlinkApache KafkaCloud environmentsDistributed systemsBackend APIsData-driven systems

Soft Skills

Problem solvingTeam collaborationCommunicationMentoringLeadership

Industry & Role

Industry Advertising Technology

Job Function Develop and optimize backend services powering Expedia Group's Advertising Technology platform

Role Subtype backend engineer

Tech Domains Java, Kotlin, gRPC, Protobuf, Apache Flink, Apache Kafka, Cloud environments, Distributed systems, PostgreSQL

Keywords for Your Resume

software development engineer iiiadvertising technologyadsad deliveryreal-timelow-latencybackend servicesgRPCprotobufflinksparkcloud environmentsdistributed systemsdata-driven systemsml-powered featuresA/B experimentationsearch and retrievalembeddingsai/semantic searchpythonjavakotlin

Deal Breakers

Bachelor's or Master's degree in CS or related, 5+ years backend experience, Experience with gRPC/Protobuf and streaming systems

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Software Development Engineer III, Advertising Technology

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