Principal ETL Developer
Company: Leidos
Location: Bethesda
Posted on: April 2, 2026
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Job Description:
Leidos has an exciting opportunity for a Principal ETL Developer
in our National Security Sector's (NSS) Cyber & Analytics Business
Area (CABA) . Our talented team is at the forefront in Security
Engineering, Computer Network Operations (CNO), Mission Software,
Analytical Methods and Modeling, Signals Intelligence (SIGINT), and
Cryptographic Key Management. At Leidos , we offer competitive
benefits , including Paid Time Off, 11 paid Holidays, 401K with a
6% company match and immediate vesting, Flexible Schedules,
Discounted Stock Purchase Plans, Technical Upskilling, Education
and Training Support, Parental Paid Leave, and much more. Join us
and make a difference in National Security! Job Summary : We have
an IMMEDIATE NEED for a Principal ETL developer to play a pivotal
role in shaping, leading, 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
defining architectural best practices, optimizing performance in
large-scale environments, and mentoring junior developers, 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 and directs major deliverables of
projects through all aspects of the software development lifecycle.
This is a hybrid position. You must be able and willing to
periodically commute into Bethesda, MD for meetings with the team.
A TS/SCI w/ Poly is required, for consideration. Primary
Responsibilities: Architecting complex NiFi data pipeline design:
Design and develop enterprise-level ETL architectures and implement
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. Advanced 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 expertise in relevant services (e.g.,
Kafka, Elasticsearch, S3, SQS/SNS). Defining best practices and
standards: 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 and
effectively communicate complex technical concepts to both
technical and non-technical audiences. Mentorship and team
leadership: Mentor junior developers, provide technical guidance,
conduct code reviews, and foster a collaborative learning
environment. U.S. Citizenship is required per the contract. A
TS/SCI w/ Poly is required for consideration, as is willingness to
be submitted for additional clearances. Basic Qualifications:
In-depth experience designing, developing, and managing complex
NiFi data flow solutions in large-scale enterprise environments.
In-depth knowledge of NiFi architecture, processors, and
configurations, along with hands-on experience with NiFi Registry
and clustering for high availability and scalability. Proficiency
in programming languages like Java and Python for custom NiFi
processor development and scripting for automation. Proficiency
writing and optimizing complex queries, along with experience in
managing relational and NoSQL databases (e.g., Postgres,
Elasticsearch, DynamoDB). Direct experience with real-time
streaming, and API integration (REST) for seamless data
connectivity. Direct experience with cloud platforms like AWS,
Azure, or OCI and related data services Strong ability to analyze
complex data challenges, identify root causes, and implement
effective solutions. Strong ability to collaborate effectively with
cross-functional teams, articulate technical concepts clearly, and
provide effective mentorship. Bachelor’s degree with 12 years of
prior relevant experience or Master’s with 10 years of relevant
experience. Preferred Qualifications: In-depth experience deploying
ETL solutions in an AWS environment. CABARESTON If you're looking
for comfort, keep scrolling. At Leidos, we outthink, outbuild, and
outpace the status quo — because the mission demands it. We're not
hiring followers. We're recruiting the ones who disrupt, provoke,
and refuse to fail. Step 10 is ancient history. We're already at
step 30 — and moving faster than anyone else dares. Original
Posting: February 5, 2026 For U.S. Positions: While subject to
change based on business needs, Leidos reasonably anticipates that
this job requisition will remain open for at least 3 days with an
anticipated close date of no earlier than 3 days after the original
posting date as listed above. Pay Range: Pay Range $131,300.00 -
$237,350.00 The Leidos pay range for this job level is a general
guideline only and not a guarantee of compensation or salary.
Additional factors considered in extending an offer include (but
are not limited to) responsibilities of the job, education,
experience, knowledge, skills, and abilities, as well as internal
equity, alignment with market data, applicable bargaining agreement
(if any), or other law.
Keywords: Leidos, Rockville , Principal ETL Developer, IT / Software / Systems , Bethesda, Maryland
