System One

Senior ETL Data Engineer

⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior ETL Data Engineer based in Columbia, MD (Hybrid) for a 12-month contract. Requires 5 years of experience in database design, ETL/ELT scripting, and proficiency in SQL or NoSQL. No visa sponsorship available.
🌎 - Country
United States
💱 - Currency
$ USD
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💰 - Day rate
Unknown
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🗓️ - Date
February 12, 2026
🕒 - Duration
More than 6 months
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🏝️ - Location
Hybrid
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📄 - Contract
Unknown
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🔒 - Security
Unknown
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📍 - Location detailed
Columbia, MD
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🧠 - Skills detailed
#NoSQL #Python #Data Lake #Database Design #Replication #SQL (Structured Query Language) #Data Access #"ETL (Extract #Transform #Load)" #Cloud #Metadata #Automation #Data Modeling #Data Engineering #Data Warehouse #Big Data #Logical Data Model #Scala #Data Extraction #Programming #Data Management
Role description
Position Title: Senior ETL Data Engineer Location: Columbia, MD  (Hybrid Role) 12 months CTH PURPOSE: The Senior Data Engineer is responsible for orchestrating, deploying, maintaining and scaling cloud OR on-premise infrastructure targeting big data and platform data management (Relational and NoSQL, distributed and converged) with emphasis on reliability, automation and performance. This role will focus on developing solutions and helping transform the company's platforms deliver data-driven, meaningful insights and value to company. ESSENTIAL FUNCTIONS: 20% Develops and maintains infrastructure systems (e.g., data warehouses, data lakes) including data access APIs. Prepares and manipulates data using multiple technologies. 15% Interprets data, analyzes results using statistical techniques, and provides ongoing reports. Executes quantitative analyses that translate data into actionable insights. Provides analytical and data-driven decision-making support for key projects. Designs, manages, and conducts quality control procedures for data sets using data from multiple systems. 15% Develops data models by studying existing data warehouse architecture; evaluating alternative logical data models including planning and execution tables; applying metadata and modeling standards, guidelines, conventions, and procedures; planning data classes and sub-classes, indexes, directories, repositories, messages, sharing, replication, back-up, retention, and recovery. 15% Creates data collection frameworks for structured and unstructured data. 15% Improves data delivery engineering job knowledge by attending educational workshops; reviewing professional publications; establishing personal networks; benchmarking state-of-the-art practices; participating in professional societies. 10% Applies data extraction, transformation and loading techniques in order to connect large data sets from a variety of sources. 10% Applies and implements best practices for data auditing, scalability, reliability and application performance. Education Level: Bachelor's Degree Experience: 5 years Experience with database design and developing modeling tools. Experience developing and updating ETL/ELT scripts. Hands-on experience with application development, relational database layout, development, data modeling. Preferred Qualifications Knowledge, Skills and Abilities (KSAs) Knowledge and understanding of at least one programming language (i.e., SQL, NoSQL, Python)., Expert Knowledge and understanding of database design and implementation concepts. , Expert Knowledge and understanding of data exchange formats., Expert Knowledge and understanding of data movement concepts., Expert Strong technical and analytical and problem solving skills to troubleshoot to solve a variety of problems., Expert Requires strong organizational and communication skills, written and verbal, with the ability to handle multiple priorities., Advanced This position doesn't support VISA sponsorship. Applicants who do not require Sponsorship to work in United States will be considered for this position. Ref: #851-Rockville-S1 #M2