Job description

As a Senior Backend Software Engineer on Walmart’s Pricing team, you will lead the design and development of large-scale backend event-driven systems leveraging GenAI LLMs, machine learning, Cassandra, Kafka, Apache Spark, and GCP. You’ll architect scalable solutions to power pricing systems, mentor engineers, and drive innovation that impacts millions of customers. Your work will directly impact millions of Walmart customers and associates by ensuring competitive, accurate, and timely prices across our online and store channels. Key Responsibilities: • Architect, design, and implement complex backend systems for pricing services using Java and Python (Kotlin experience is a plus) • Lead integration of GenAI LLMs and machine learning models into backend services • Design and optimize data storage with Cassandra, data streaming with Kafka, and large-scale processing with Apache Spark • Develop and manage big data ETL jobs • Implement and maintain monitoring and visualization dashboards with Grafana • Mentor and guide junior engineers; lead technical discussions and reviews • Collaborate with data scientists, ML engineers, and product managers to deliver pricing solutions • Ensure best practices in code quality, testing, and documentation • Drive continuous improvement in system performance, scalability, and reliability • Bachelor’s or Master’s degree in Computer Science or related field • 5+ years of backend development experience • Deep expertise in Java; experience with Kotlin is a plus, strong Python skills preferred • Experience with Cassandra (or similar distributed NoSQL databases) • Experience with Kafka (or similar messaging/streaming platforms) • Experience designing and building large-scale distributed systems • Proficiency with RESTful APIs and microservices • Experience integrating machine learning models and/or GenAI LLMs into production preferred • Experience with Apache Spark for big data processing preferred • Hands-on experience with GCP (Google Cloud Platform) preferred • Experience with monitoring/observability tools such as Grafana preferred • Excellent leadership, communication, and problem-solving skills You’ll sweep us off our feet if… • You have experience leading technical design discussions and mentoring junior engineers • You have a strong sense of ownership and focus on delivering business impact • You are passionate about performance, scalability, and reliability at massive scale • You thrive in fast-paced, agile environments and enjoy solving hard technical problems All your information will be kept confidential according to EEO guidelines.

Requirements

Must-haves

Lead integration of GenAI LLMs and machine learning models into backend services
Design and optimize data storage with Cassandra, data streaming with Kafka, and large-scale processing with Apache Spark
Develop and manage big data ETL jobs
Implement and maintain monitoring and visualization dashboards with Grafana
Mentor and guide junior engineers; lead technical discussions and reviews
Collaborate with data scientists, ML engineers, and product managers to deliver pricing solutions
Ensure best practices in code quality, testing, and documentation
Drive continuous improvement in system performance, scalability, and reliability
Bachelor’s or Master’s degree in Computer Science or related field
5+ years of backend development experience
Experience with Cassandra (or similar distributed NoSQL databases)
Experience with Kafka (or similar messaging/streaming platforms)
Experience designing and building large-scale distributed systems
Proficiency with RESTful APIs and microservices
Excellent leadership, communication, and problem-solving skills
You’ll sweep us off our feet if…
You have experience leading technical design discussions and mentoring junior engineers
You have a strong sense of ownership and focus on delivering business impact

Nice-to-haves

Architect, design, and implement complex backend systems for pricing services using Java and Python (Kotlin experience is a plus)
Deep expertise in Java; experience with Kotlin is a plus, strong Python skills preferred
Experience integrating machine learning models and/or GenAI LLMs into production preferred
Experience with Apache Spark for big data processing preferred
Hands-on experience with GCP (Google Cloud Platform) preferred
Experience with monitoring/observability tools such as Grafana preferred

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

machine learninggcpjavapythonkotlinmlagile

Platform: smartrecruiters
Effort: medium