Walmart

Principal, Data Engineer

Walmart
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1 day ago
Chennai, IndiaStaff+

Responsibilities

  • Design, build, and operate large-scale batch and streaming data pipelines using Spark, Java, and Python.
  • Apply software engineering, architecture, testing, code review, and design practices to data engineering systems.
  • Build and maintain services, APIs, and distributed systems supporting data pipelines and platform capabilities.
  • Integrate embeddings, vector search, LLM-assisted data quality, anomaly detection, agentic monitoring, self-healing, and AI-assisted documentation into the data platform.
  • Partner with data scientists and ML engineers on feature pipelines, model-serving data paths, and MLOps infrastructure.
  • Own data quality, observability, governance, reliability metrics, SLO/SLA practices, incident management, and post-incident reviews.
  • Lead architecture and design reviews across data engineering and platform engineering domains.
  • Set technical direction and best practices across multiple teams, mentor engineers, and influence broader data engineering standards.
  • Evaluate and adopt Big Data, cloud, AI, and agentic technologies where they improve reliability, productivity, or business value.

Requirements

  • 12+ years of professional software engineering experience with significant hands-on data engineering at scale.
  • Strong proficiency in Java and Python and strong working knowledge of Spark for distributed data processing.
  • Deep experience with Spark, Hadoop/HDFS, Hive, Kafka, workflow orchestration such as Airflow, batch processing, streaming processing, and large-scale data transformation.
  • Experience with data modeling, ETL/ELT pipeline design, data quality, observability, governance, and lakehouse architectures such as Delta Lake, BigQuery, or Databricks.
  • Hands-on experience integrating model APIs and GenAI/LLM tooling, building agentic workflows, working with embeddings and vector search, and applying MLOps practices such as feature stores, model lifecycle management, and retraining pipelines.
  • Working knowledge of platform engineering, microservices, API design, Kubernetes or equivalent orchestration, CI/CD, and cloud-native practices.
  • Strong distributed systems, event-driven architecture, asynchronous processing, fault tolerance, domain-oriented design, low-level design, system design, and production trade-off evaluation skills.
  • Strong software engineering craftsmanship, including testing strategy, code review standards, design patterns, and high-throughput system design.
  • Demonstrated ability to translate ambiguous data or business problems into technical execution plans and operate with high autonomy in a 0-to-1 environment.
  • Additional experience with Go, C++, or Scala is preferred.
  • A bachelor's or master's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience; Walmart's minimum qualifications also allow qualifying experience in place of a degree.

Benefits

  • Performance incentive awards, maternity and parental leave, paid time off, health benefits, and other benefits.
  • Role is based in the Bangalore or Chennai office and requires daily work there, with flexibility to manage personal life needs.

Tech Stack

Apache AirflowApache HadoopApache HiveApache KafkaApache SparkC++DatabricksGoGoogle BigQueryJavaKubernetesPythonScala

Categories

BackendData Engineering
Walmart

About Walmart

10,000+ employees

Walmart is a global omnichannel retailer that sells groceries, general merchandise, and services through Walmart and Sam's Club stores and online marketplaces for consumers and small businesses. Its model spans physical retail, e-commerce, advertising, and a vast supply chain, plus pharmacy, health, and financial services. Founded in 1962 and headquartered in Bentonville, Arkansas, Walmart Inc. is a public company on the NYSE (WMT) operating in the U.S. and multiple international markets.

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