Software Developer

Leidos LLC; Reston (VA); On-site; USD 131,000 - 237,000; Full time

Job summary

Leidos LLC is seeking a Software Developer with strong problem solving and analytical skills, focusing on data accuracy and reliability in scalable data pipelines. You will work in an agile team environment crafting, testing, and maintaining ETL/ELT processes and integrations across diverse data sources.

The role demands expertise in TypeScript, Node.js, Python, SQL, and experience with big data platforms and cloud/on-prem environments. A TS/SCI with Poly clearance is required for U.S.

Qualifications

• Active TS/SCI with Poly clearance.
• Bachelor's and 12+ years of related work experience OR Masters and 10+ years OR 16+ years of relevant experience in lieu of degree.
• Strong expertise in ETL tools, frameworks, and best practices.
• Proficiency in TypeScript, Node.js, and Python for backend and data pipeline development.
• Experience with API integrations, batch jobs, and automated workflows.
• Strong knowledge of SQL and relational databases.
• Familiarity with data modeling, schema design, and performance optimization.
• Experience with cloud-based or on-prem data environments.

Responsibilities

• Design, develop, and optimize ETL pipelines and data workflows.
• Integrate data from multiple internal and external systems.
• Ensure data quality, reliability, and consistency across pipelines.
• Troubleshoot and resolve performance and data integrity issues.
• Collaborate with engineering, analytics, and business teams to support data needs.
• Document pipeline architecture, processes, and operational procedures.

Skills

TypeScript

Node.js

Python

SQL

Education

Bachelor's degree

Master's degree

Tools

Elasticsearch

Apache NiFi

NoSQL databases

Job description

Leidos is seeking a Software Developer with strong problem solving and analytical skills who is detail-oriented with a focus on data accuracy and reliability. We are looking for a developer with hands on experience in ETL/ELT development, data integration, and pipeline orchestration. The selected will have proven experience designing, building, and maintaining scalable data pipelines, a strong understanding of data transformation, cleansing, validation, and migration processes and experience working with large, complex datasets across multiple source systems. The customer applies technical resources to accelerate the timely, reliable, and secure delivery of open source data, information, and insights. They require support to maintain and enhance an existing big data exploitation platform. The Software Developer will work within an agile team environment. Work will include creating Amazon Web Services (AWS)-based resources; writing, testing, and debugging custom application code; administering database services; and performing data cleaning, formatting, and other forms of data management.

Responsibilities

• Designing, developing, and optimizing ETL pipelines and data workflows
• Integrating data from multiple internal and external systems
• Ensuring data quality, reliability, and consistency across pipelines
• Troubleshooting and resolve performance and data integrity issues
• Collaborating with engineering, analytics, and business teams to support data needs
• Documenting pipeline architecture, processes, and operational procedures

Early / Mid Level Requirements

• Early/mid-level (5+ ish years usual benchmark) hands-on experience in ETL/ELT development, data integration, and pipeline orchestration
• Proven experience designing, building, and maintaining scalable data pipelines
• Strong understanding of data transformation, cleansing, validation, and migration processes
• Experience working with large, complex datasets across multiple source systems

Basic Qualifications

• Must have an active TS/SCI with Poly to be considered
• Must have a Bachelor's and at least 12 years of relatable work experience OR a Masters and at least 10 years of relatable work experience OR 16+ years of relatable work experience in lieu of degree.
• Strong expertise in ETL tools, frameworks, and best practices
• Proficiency in TypeScript, Node.js, and Python for backend and data pipeline development
• Experience developing and maintaining API integrations, batch jobs, and automated workflows
• Strong knowledge of SQL and relational databases
• Familiarity with data modeling, schema design, and performance optimization
• Experience with cloud-based or on-prem data environments

Preferred Qualifications

• Experience with Elasticsearch, including indexing, querying, and optimizing search/data
• Experience with Apache NiFi for data flow automation and orchestration
• Familiarity with streaming and event-driven architectures
• Experience with NoSQL databases, message queues, or distributed systems
• Exposure to data warehousing and analytics platforms #MSBA

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: September 17, 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.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquarters in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.