Senior Data Engineer
⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is a Senior Data Engineer for a 6-month contract in Ashburn, VA, offering a competitive pay rate. Requires 7+ years of experience, strong SQL and Java skills, AWS expertise, and proficiency in Apache Spark, Kafka, and Python.
🌎 - Country
United States
💱 - Currency
$ USD
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💰 - Day rate
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🗓️ - Date discovered
August 19, 2025
🕒 - Project duration
Unknown
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🏝️ - Location type
Hybrid
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📄 - Contract type
Unknown
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🔒 - Security clearance
Unknown
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📍 - Location detailed
Ashburn, VA
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🧠 - Skills detailed
#Data Pipeline #Spark (Apache Spark) #S3 (Amazon Simple Storage Service) #Data Engineering #Apache Spark #AWS (Amazon Web Services) #Redshift #Hadoop #DynamoDB #Scala #Databricks #SQL Queries #Scripting #Computer Science #Java #Python #Kafka (Apache Kafka) #"ETL (Extract #Transform #Load)" #SQL (Structured Query Language) #Bash
Role description
Job Summary (Senior Data Engineer – KNS, Ashburn, VA)
• Design, build, and maintain high-volume data pipelines and ETL workflows.
• Write and optimize complex SQL queries for large-scale data sets.
• Model robust data solutions using star schemas, fact, and dimension tables.
• Process large data sets using Apache Spark and Hadoop ecosystem.
• Develop real-time streaming pipelines with Kafka.
• Utilize AWS services (S3, EMR, Redshift, DynamoDB) for data engineering tasks.
• Automate data workflows and tasks using bash scripting.
• Provide ad hoc data engineering support with Python.
• Collaborate with cross-functional teams to deliver scalable, secure data solutions.
• (Bonus) Implement advanced analytics using Databricks and Delta Tables.
• Ensure production-grade data pipelines remain reliable and performant.
Required Skills
• 7+ years of professional data engineering experience.
• Strong Java development and advanced SQL proficiency (including performance tuning).
• Hands-on experience with Bash scripting, Apache Spark, and Kafka.
• Deep knowledge of data warehousing concepts (star schema, fact/dimension modeling).
• Extensive AWS experience (S3, EMR, Redshift, DynamoDB).
• Proven track record of building/supporting production pipelines.
• Proficient with Python for data engineering tasks.
• Bachelor’s or Master’s in Computer Science, Engineering, or related field.
Nice To Have
• Experience with Databricks and Delta Tables.
• Background working on federal or public-sector programs.
• Active Public Trust clearance preferred.
Location/Other:
• Onsite in Ashburn, VA (2–3 days/week, non-negotiable).
• 6-month contract, with long-term conversion expected.
• In-person final interview required.
Job Summary (Senior Data Engineer – KNS, Ashburn, VA)
• Design, build, and maintain high-volume data pipelines and ETL workflows.
• Write and optimize complex SQL queries for large-scale data sets.
• Model robust data solutions using star schemas, fact, and dimension tables.
• Process large data sets using Apache Spark and Hadoop ecosystem.
• Develop real-time streaming pipelines with Kafka.
• Utilize AWS services (S3, EMR, Redshift, DynamoDB) for data engineering tasks.
• Automate data workflows and tasks using bash scripting.
• Provide ad hoc data engineering support with Python.
• Collaborate with cross-functional teams to deliver scalable, secure data solutions.
• (Bonus) Implement advanced analytics using Databricks and Delta Tables.
• Ensure production-grade data pipelines remain reliable and performant.
Required Skills
• 7+ years of professional data engineering experience.
• Strong Java development and advanced SQL proficiency (including performance tuning).
• Hands-on experience with Bash scripting, Apache Spark, and Kafka.
• Deep knowledge of data warehousing concepts (star schema, fact/dimension modeling).
• Extensive AWS experience (S3, EMR, Redshift, DynamoDB).
• Proven track record of building/supporting production pipelines.
• Proficient with Python for data engineering tasks.
• Bachelor’s or Master’s in Computer Science, Engineering, or related field.
Nice To Have
• Experience with Databricks and Delta Tables.
• Background working on federal or public-sector programs.
• Active Public Trust clearance preferred.
Location/Other:
• Onsite in Ashburn, VA (2–3 days/week, non-negotiable).
• 6-month contract, with long-term conversion expected.
• In-person final interview required.
