ETL Developer (2025-0117)

Acclaim Technical Services•Bethesda, MD

58d•$180,000 - $190,000

About The Position

Acclaim Technical Services, founded in 2000, is a leading language, operations, and technology services company supporting a wide range of U.S. Federal agencies. We are an Employee Stock Ownership Plan (ESOP) company, which is uncommon within our business sector. We see this as a significant strength, and it shows: ATS is consistently ranked as a top workplace among DC area firms and continues to grow. We are actively hiring an ETL Developer with TS/SCI clearance and polygraph to support a program in Bethesda, MD. Individuals will play a pivotal role in shaping, and implementing cutting-edge data flow solutions centered around Apache NiFi. The candidate will provide technical expertise and support in the design, development, implementation and testing of customer tools and applications in support of Extracting, Transforming and Loading (ETL) of data into an enterprise Data Lake. The candidate will be responsible for following architectural best practices, and optimizing performance in large-scale environments, ensuring the delivery of robust, scalable, and secure data flow solutions that drive critical customer needs. Based in a DevOps framework, the ETL Developer participates in the delivery of major projects through all aspects of the software development lifecycle.

Requirements

Direct experience designing, developing, and managing complex NiFi data flow solutions in large-scale enterprise environments.
Experience in programming languages like Java and/or Python and scripting for automation.
Experience writing and optimizing complex queries, along with experience in interacting with relational and NoSQL databases (e.g., Postgres, Elasticsearch, DynamoDB).
Experience with real-time streaming, and API integration (REST) for seamless data connectivity.
Experience with cloud platforms like AWS, Azure, or OCI and related data services
Ability to analyze complex data challenges, identify root causes, and implement effective solutions.
Ability to collaborate effectively with cross-functional teams and articulate technical concepts clearly.
HS diploma and at least 8 years of relevant experience; or BS degree and at least 4 years of relevant experience; or Masters degree and at least 2 years of relevant experience.
TS/SCI clearance and polygraph

Nice To Haves

Experience deploying ETL solutions in an AWS environment.
Experience developing custom NiFi processors with Java and/or Python.
Direct knowledge of NiFi architecture, processors, and configurations, along with hands-on experience with NiFi Registry and clustering for high availability and scalability

Responsibilities

Building complex NiFi data pipeline design: Develop and implement enterprise-level ETL NiFi data pipelines for large-scale data ingestion, transformation, and processing from diverse sources.
Performance optimization and tuning: Optimize NiFi data flows, including processor tuning, memory management, and load balancing, ensuring optimal performance for batch and real-time processing.
Troubleshooting and problem resolution: Identify, diagnose, and resolve complex NiFi data flow issues, including performance bottlenecks, data discrepancies, and integration failures.
Integrating with big data and cloud technologies: Seamlessly integrate NiFi with various databases, big data ecosystems, and cloud platforms (e.g., AWS, OCI, Azure), demonstrating familiarity in relevant services (e.g., Kafka, Elasticsearch, S3, SQS/SNS).
Follow best practices and standards: Follow establish best practices for NiFi development, deployment, security, and governance, ensuring adherence to enterprise-wide data management policies.
Documentation and knowledge sharing: Create and maintain comprehensive documentation for NiFi data flows, mappings, architectures, and standard operating procedures, ensuring knowledge transfer and promoting efficient team operations.
Collaboration and communication: Collaborate effectively with data architects, data engineers, application/service developers, and other stakeholders to translate business requirements into robust technical solutions.