Protocol Buffers Engineer Jobs

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Data Engineer

Infinitive Inc McLean, VA

McLean, VA

Today

$90k - $154k/yr Full time Apache Kafka Apache Kafka Connect API

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Job Description

This Data Engineer role at Infinitive Inc (onsite in McLean, VA) focuses on designing, building, and scaling next-generation event-driven data platforms. The position combines Apache Kafka streaming with Temporal durable workflow orchestration, along with production-grade schema controls and batch and streaming ETL/ELT using Python and Apache Spark.

Role Responsibilities

Architect, deploy, and maintain high-volume distributed data streams using Apache Kafka, including producers, consumers, Kafka Connect, and Schema Registry.
Define and enforce schema design standards, versioning strategies, and automated schema validation across systems. Use frameworks such as Avro, Protocol Buffers, and JSON Schema to maintain data contracts for microservices, streaming consumers, and lakehouse storage.
Implement durable execution workflows with Temporal to coordinate long-running distributed pipelines, apply transaction compensation using the Saga pattern, and manage cross-system ETL tasks.
Build end-to-end batch and near-real-time pipelines using Python, SQL, and Apache Spark (including PySpark).
Design and optimize analytical data models, including dimensional/star schema patterns, in cloud data warehouses and lakehouses such as Snowflake, BigQuery, Databricks, and Redshift.
Create and maintain automated testing, continuous schema validation, data drift detection, and observability for both streaming and batch workflows.
Collaborate with software engineers, machine learning engineers, and analysts to establish standard schema definitions, data contracts, and production-ready CI/CD release patterns.

Requirements

4+ years of professional experience in data engineering, backend distributed systems, or software engineering.
Hands-on experience with Temporal (or Cadence) demonstrating knowledge of durable workflows, activities, retries, signals, queries, and long-running distributed task orchestration.
Deep expertise with Apache Kafka, including message partitioning, consumer groups, offset management, and topic design.
Practical experience with schema definition frameworks such as Apache Avro, Protocol Buffers (including gRPC), or JSON Schema.
Experience managing schema evolution and compatibility modes (backward, forward, full), including working with schema registries such as Confluent Schema Registry and AWS Glue Schema Registry.
Experience enforcing data validation rules, contract testing, and data quality checks using tools such as Great Expectations, Pandera, Pydantic, and dbt tests.
Strong programming skills in Python (Go or Java is a plus), with emphasis on clean code, design patterns, and unit/integration testing practices.
Hands-on development with Apache Spark using PySpark and Spark SQL for large-scale dataset processing.
Strong experience with relational databases, dimensional modeling, and query performance tuning.

Technology Stack

Apache Kafka, Kafka Connect, Schema Registry
Temporal, Cadence
Apache Avro, Protocol Buffers, gRPC, JSON Schema
Confluent Schema Registry, AWS Glue Schema Registry
Great Expectations, Pandera, Pydantic, dbt
Python, SQL
Apache Spark, PySpark, Spark SQL
Snowflake, BigQuery, Databricks, Redshift

Compensation

A reasonable estimate of the current range for this role in the U.S. is $90,000 - $154,00.00 per year.

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