Python Developer
Reston, VA · On-site
$52.25 - $72/hr
Experience / Knowledge in Statistics Based Programming Language R for Data Visualization
Quick apply
Reston, VA · On-site
$52.25 - $72/hr
Experience / Knowledge in Statistics Based Programming Language R for Data Visualization
Quick apply
Reston, VA · On-site
$52.25 - $72/hr
Experience / Knowledge in Statistics Based Programming Language R for Data Visualization
Programming languages: Knowing a statistical programming language like Python to enable handling ... Experience with: Excel, Google Sheets, R or Python, SAS, or Microsoft Power BI all a plus
Programming languages: Knowing a statistical programming language like Python to enable handling ... Experience with: Excel, Google Sheets, R or Python, SAS, or Microsoft Power BI all a plus
$123K - $163K/yr
Strong proficiency in Python, R, JavaScript, or another programming language used for production artificial intelligence and machine-learning development. Python proficiency is strongly preferred.
Quick apply
$123K - $163K/yr
Strong proficiency in Python, R, JavaScript, or another programming language used for production artificial intelligence and machine-learning development. Python proficiency is strongly preferred.
Mclean, VA · On-site
$123K - $163K/yr
Strong proficiency in Python, R, JavaScript, or another programming language used for production artificial intelligence and machine-learning development. Python proficiency is strongly preferred.
Mclean, VA · On-site
$123K - $163K/yr
Strong proficiency in Python, R, JavaScript, or another programming language used for production artificial intelligence and machine-learning development. Python proficiency is strongly preferred.
Ashburn, VA · On-site
$69K - $125K/yr
R-00186494 Description Leidos is seeking Software Developers to join the Air Traffic Business Area ... Experience with Java programming language * Experience with React * Experience with Web development ...
New
Ashburn, VA · On-site
$69K - $125K/yr
R-00186494 Description Leidos is seeking Software Developers to join the Air Traffic Business Area ... Experience with Java programming language * Experience with React * Experience with Web development ...
New
Ashburn, VA · On-site
$87K - $157K/yr
R-00182064 Description Leidos is seeking Lead Software Developers to join the Air Traffic Business ... Significant experience with Java programming language * Significant experience with React
New
Ashburn, VA · On-site
$87K - $157K/yr
R-00182064 Description Leidos is seeking Lead Software Developers to join the Air Traffic Business ... Significant experience with Java programming language * Significant experience with React
New
Chantilly, VA · On-site
$130K - $160K/yr
R; Julia (dynamic programming language), or other programming languages. * The development of frameworks for creating and integrating machine learning models such as TensorFlow, Pytorch, Jupyter ...
Chantilly, VA · On-site
$130K - $160K/yr
R; Julia (dynamic programming language), or other programming languages. * The development of frameworks for creating and integrating machine learning models such as TensorFlow, Pytorch, Jupyter ...
Chantilly, VA · On-site
$130K - $160K/yr
R; Julia (dynamic programming language), or other programming languages. * The development of frameworks for creating and integrating machine learning models such as TensorFlow, Pytorch, Jupyter ...
Chantilly, VA · On-site
$130K - $160K/yr
R; Julia (dynamic programming language), or other programming languages. * The development of frameworks for creating and integrating machine learning models such as TensorFlow, Pytorch, Jupyter ...
... programming language and others such as MATLAB, Python, R., etc. • Accredited degree in physics, engineering, computer science, applied math, or similar discipline with broad engineering and ...
... programming language and others such as MATLAB, Python, R., etc. • Accredited degree in physics, engineering, computer science, applied math, or similar discipline with broad engineering and ...
... programming language and others such as MATLAB, Python, R., etc. • Accredited degree in physics, engineering, computer science, applied math, or similar discipline with broad engineering and ...
... programming language and others such as MATLAB, Python, R., etc. • Accredited degree in physics, engineering, computer science, applied math, or similar discipline with broad engineering and ...
Proficiency with at least one programming or run-time interpreted programming language ... Preferred: proficiency with R, RMarkdown, and the "tidyverse" tools for data analysis. * Preferred:
Quick apply
Proficiency with at least one programming or run-time interpreted programming language ... Preferred: proficiency with R, RMarkdown, and the "tidyverse" tools for data analysis. * Preferred:
Charlottesville, VA · On-site +1
$18/hr
Familiarity with a programming language such as Bash, Python, R, Java, Lua, Julia, or Ruby. * Experience with Markdown language and Git version control is a plus. * Excellent oral and written ...
Charlottesville, VA · On-site +1
$18/hr
Familiarity with a programming language such as Bash, Python, R, Java, Lua, Julia, or Ruby. * Experience with Markdown language and Git version control is a plus. * Excellent oral and written ...
Familiarity with a programming language such as Bash, Python, R, Java, Lua, Julia, or Ruby. * Experience with Markdown language and Git version control is a plus. * Excellent oral and written ...
Familiarity with a programming language such as Bash, Python, R, Java, Lua, Julia, or Ruby. * Experience with Markdown language and Git version control is a plus. * Excellent oral and written ...
Charlottesville, VA · On-site
$105K/yr
Proficiency with at least one programming or run-time interpreted programming language ... Preferred: proficiency with R, RMarkdown, and the "tidyverse" tools for data analysis. * Preferred:
Charlottesville, VA · On-site
$105K/yr
Proficiency with at least one programming or run-time interpreted programming language ... Preferred: proficiency with R, RMarkdown, and the "tidyverse" tools for data analysis. * Preferred:
Proficiency with at least one programming or run-time interpreted programming language ... Preferred: proficiency with R, RMarkdown, and the "tidyverse" tools for data analysis. * Preferred:
Proficiency with at least one programming or run-time interpreted programming language ... Preferred: proficiency with R, RMarkdown, and the "tidyverse" tools for data analysis. * Preferred:
Arlington, VA · On-site
$115K - $145K/yr
Demonstrated expertise in Structured Query Language (SQL). * Able to work fully onsite based on client needs. Desired Qualifications: * Experience with Python or R programming languages. Pay Range ...
Arlington, VA · On-site
$115K - $145K/yr
Demonstrated expertise in Structured Query Language (SQL). * Able to work fully onsite based on client needs. Desired Qualifications: * Experience with Python or R programming languages. Pay Range ...
Richmond, VA · On-site
$54.50 - $69.25/hr
R Systems is a leading digital product engineering company that designs and develops chip-to-cloud ... Strong experience with Job Control Language (JCL) * Deep knowledge of Mainframe Operating Systems ...
Richmond, VA · On-site
$54.50 - $69.25/hr
R Systems is a leading digital product engineering company that designs and develops chip-to-cloud ... Strong experience with Job Control Language (JCL) * Deep knowledge of Mainframe Operating Systems ...
$115K - $145K/yr
Demonstrated expertise in Structured Query Language (SQL). * Able to work fully onsite based on client needs. Desired Qualifications: * Experience with Python or R programming languages. Pay Range ...
$115K - $145K/yr
Demonstrated expertise in Structured Query Language (SQL). * Able to work fully onsite based on client needs. Desired Qualifications: * Experience with Python or R programming languages. Pay Range ...
Alexandria, VA · On-site
$130K - $150K/yr
Experience or interest in leveraging AI, preferably with a working knowledge of a relevant programming language (i.e., Python, R, Ruby, Rust, Julia, etc.). * Experience in effectively prioritizing ...
Alexandria, VA · On-site
$130K - $150K/yr
Experience or interest in leveraging AI, preferably with a working knowledge of a relevant programming language (i.e., Python, R, Ruby, Rust, Julia, etc.). * Experience in effectively prioritizing ...
$130K - $150K/yr
Experience or interest in leveraging AI, preferably with a working knowledge of a relevant programming language (i.e., Python, R, Ruby, Rust, Julia, etc.). * Experience in effectively prioritizing ...
$130K - $150K/yr
Experience or interest in leveraging AI, preferably with a working knowledge of a relevant programming language (i.e., Python, R, Ruby, Rust, Julia, etc.). * Experience in effectively prioritizing ...
$79.3K - $85.7K
8% of jobs
$85.7K - $92.1K
5% of jobs
$92.1K - $98.5K
0% of jobs
$98.5K - $104.9K
0% of jobs
$104.9K - $111.3K
0% of jobs
$114.2K is the 25th percentile. Wages below this are outliers.
$111.3K - $117.7K
25% of jobs
The median wage is $123.6K / yr.
$117.7K - $124.1K
13% of jobs
$124.1K - $130.5K
13% of jobs
$136.4K is the 75th percentile. Wages above this are outliers.
$130.5K - $136.9K
13% of jobs
$136.9K - $143.3K
13% of jobs
$143.3K - $149.7K
11% of jobs
$79.3K
$122.9K
$149.7K
R Programmers often encounter large and complex datasets that require efficient data cleaning and transformation techniques to ensure accuracy in analyses. Another common challenge is optimizing R code for performance, especially when working with big data or integrating R with other programming languages or systems. Additionally, clear communication of technical findings to non-technical stakeholders can be demanding but is essential for business impact. Being adaptable and willing to continuously learn new packages and tools helps overcome these challenges and adds significant value to the team.
An R Programming Language job involves using R, a statistical computing and graphics programming language, to analyze data, build statistical models, and create visualizations. Professionals in these roles often work in data science, machine learning, finance, healthcare, and academic research. Responsibilities may include writing R scripts, cleaning and processing data, creating reports, and implementing predictive models. Many R developers also integrate R with other tools like SQL, Python, or cloud platforms for data-driven decision-making.
Excelling in an R Programmer role requires strong proficiency in R programming, data analysis, and statistical modeling, usually supported by a degree in statistics, data science, computer science, or a related field. Familiarity with data visualization tools (such as ggplot2 or Shiny), version control systems (like Git), and relevant certifications such as the Data Science Council of America (DASCA) or equivalent are often valuable. Strong problem-solving abilities, clear communication, and collaboration skills help R Programmers effectively translate data insights to non-technical stakeholders and work efficiently within project teams. These competencies are crucial for delivering accurate, actionable analyses in various industries including finance, healthcare, and research.

$52.25 - $72/hr
Contractor
Re-posted 7 days ago
Python Developer
Python developer: 5-7 years experience
Reston only - hybrid, 3 days onsite, 2 days offsite
Open to subcontractors
1st round interview via Video, 2nd round interview onsite
Submital deadlines to be posted in the vendor chats on each Req in FG
ADDITIONAL DETAILS:
Job Requirement
• Work with product owners and other development team members to determine new features and user stories needed in large/complex development projects
• Create or Update documentation in support of development efforts. Documents may include detailed specifications, implementation guides, architecture diagrams or design documents.
• Participate in code reviews with peers and managers to ensure that each increment adheres to original vision as described in the user story and all standard resource libraries and architecture patterns as appropriate.
• Respond to trouble/support calls for applications in production to make quick repair to keep application in production.
• Mentor or provide technical guidance to less experienced staff; may use high end development tools to assist or facilitate development process.
• Lead projects/initiatives end to end with little supervision
• Leverage Fannie Mae DevOps tool stack to build, inspect, deploy, test and promote new or updated features. May serve as technical lead, architect, project lead or principal developer in course of large or complex project.
• Expert proficiency in unit testing as well as coding in 1-2 languages (e. g. Python, Java, etc.).
Minimum Required Experiences
• 5+ years of relevant experience
Specialized Knowledge and Skills
3 or more years of experience with Python, SQL, Spark and Amazon EMR
3+ years of experience in building and deploying applications in AWS (S3, Lambda, Elastic Beanstalk, Hive, Glue, Redshift, RDS, CloudWatch, SNS, SQS, Kinesis etc.)
Experience processing large amounts of structured and unstructured data
Experience with CI/CD with knowledge of Git, Bitbucket, Jenkins
Tools
• Skilled in AWS Compute such as EC2, Lambda, Beanstalk, or ECS, EMR
• Skilled in strong SQL
• Skilled in AWS Database products such as RDS, Redshift, or Aurora
• Skilled in AWS Management and Governance suite of products such as CloudTrail, CloudWatch
• Skilled in Amazon Web Services (AWS) offerings, development, and networking platforms
• Experience / Knowledge in Statistics Based Programming Language R for Data Visualization