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Data Science Junior Jobs in Reston, VA (NOW HIRING)

Leidos

Senior Data Scientist

Chantilly, VA · On-site

$154.05K - $278.48K/yr

Apply advanced data science techniques including exploratory data analysis, feature engineering ... Mentor and guide junior data scientists and contribute to analytic standards, best practices, and ...

ActioNet

Data Scientist

Rosslyn, VA · On-site

Mentor junior data scientists and provide technical guidance (Level III) * Collaborate with leadership to align data strategies with organizational goals (Level III) * Utilize programming languages ...

ActioNet

Data Scientist

Arlington, VA

Mentor junior data scientists and provide technical guidance (Level III) * Collaborate with leadership to align data strategies with organizational goals (Level III) * Utilize programming languages ...

ActioNet

Data Scientist

Rosslyn, VA

Mentor junior data scientists and provide technical guidance (Level III) * Collaborate with leadership to align data strategies with organizational goals (Level III) * Utilize programming languages ...

ActioNet, Inc.

Data Scientist

Rosslyn, VA · On-site

Mentor junior data scientists and provide technical guidance (Level III) * Collaborate with leadership to align data strategies with organizational goals (Level III) * Utilize programming languages ...

Dexian DISYS

Lead, Data Scientist

Rockville, MD

... junior team members on technical trade-offs on solutions and provide thought leadership about how different problems can be solve. This role reports to the Senior Director, Data Science. You will

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How much do data science junior jobs pay per year?

As of May 29, 2026, the average yearly pay for data science junior in Reston, VA is $82,554.00, according to ZipRecruiter salary data. Most workers in this role earn between $59,300.00 and $84,800.00 per year, depending on experience, location, and employer.

What is a Data Science Junior job?

A Data Science Junior is an entry-level role in data science where professionals assist in analyzing data, building models, and generating insights. They work under the guidance of senior data scientists, helping with data cleaning, visualization, and basic machine learning tasks. This role requires proficiency in programming languages like Python or R, knowledge of statistics, and familiarity with data manipulation tools. It serves as a foundation for gaining hands-on experience and advancing in the data science field.

What are the key skills and qualifications needed to thrive in the Data Science Junior position, and why are they important?

To thrive as a Data Science Junior, a strong understanding of statistics, mathematics, and data analysis is essential, often supported by a bachelor's degree in a related field. Familiarity with programming languages like Python or R, as well as tools such as SQL and visualization platforms, is typically required. Strong problem-solving abilities, effective communication, and a willingness to learn make candidates stand out in this role. These skills enable efficient data exploration, clear communication of insights, and successful collaboration on data-driven projects.

What are some typical daily responsibilities for a Data Science Junior?

As a Data Science Junior, your daily tasks often include cleaning and preparing data sets, conducting exploratory data analyses, and supporting the development of predictive models under the guidance of senior team members. You may also assist in visualizing data and preparing reports to help communicate insights to both technical and non-technical stakeholders. Collaboration is a key part of the role, as you'll frequently work with data engineers, analysts, and business teams to understand project goals. These responsibilities help you build foundational skills and gain exposure to a variety of real-world data problems early in your career.
More about Data Science Junior jobs
What are the most commonly searched types of Data Science jobs in Reston, VA? The most popular types of Data Science jobs in Reston, VA are:
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What cities near Reston, VA are hiring for Data Science Junior jobs? Cities near Reston, VA with the most Data Science Junior job openings:
Data Science Junior jobs near you

Data Scientist - Mentorship and Training (AI/ML)

The Swift Group, LLC

Herndon, VA • On-site

Full-time

Posted 22 days ago

Job description

Job Summary:
The Swift Group, LLC is a mission-driven and employee-focused services and solutions company based in Reston, VA. They are seeking a high-performing Data Scientist to lead training modules and mentor other data scientists while combining hands-on data science with training delivery.
Responsibilities:
• Design and deliver onboarding and upskilling programs for data scientists.
• Design and teach/facilitate in-person trainings to include full day classroom trainings and 1–2-hour deskside trainings
• Author and refine training materials and playbooks that make complex topics approachable.
• Establish and champion best practices for version control (Git/GitFlow), code review, and continuous integration for data science teams.
• Document tools, packages, and methodologies with Sphinx.
• Partner with stakeholders to translate mission needs into training, tooling improvements, and backlog priorities.
Qualifications:
Required:
• BS/MS in Computer Science, Data Science, Statistics, or a related field, or equivalent experience
• Minimum 10 years of data science experience
• Demonstrated strong research skills, especially in the areas of emerging AI/ML technologies
• Ability to reverse engineer AI/ML models
• Demonstrated understanding of data science, AI/ML in the context of IC missions
• Advanced Python proficiency
• Expertise writing complex, performant SQL across multiple data sources; comfortable with schema exploration and query optimization
• Expertise with Git-based workflows (branches, PRs, code reviews)
• Proficiency with Linux fundamentals (shell, filesystem, SSH), Conda environment management
• Fluency with Jupyter Notebooks for exploration, demos, and reproducible training assets
• Demonstrated ability to debug code and data issues
• Exceptional communication skills and a coaching mindset; able to explain technical concepts clearly to junior data scientists in visual, verbal, and written formats
• Proven experience collaborating with multiple stakeholders and incorporating feedback into iterative improvements
• Desire to learn new data science techniques or software and prepare trainings
• US citizenship and an active TS/SCI with Polygraph security clearance required.
Preferred:
• Experience developing new training modules from scratch, benchmarking skills needed in collaboration with stakeholders
• Elastic Stack familiarity (Elasticsearch indexing/search patterns, Kibana visualizations, Logstash/Filebeat pipelines)
• Apache Spark (PySpark) for large‑scale data processing and performance tuning
• FastAPI for building well‑documented, testable services that expose models and analytics
• Docker and microservices fundamentals
• ETL/ELT design patterns and data workflow orchestration
• Sphinx for generating maintainable, versioned documentation from source
• Understanding of API security and certificates
• Experience with client’s Data Science environment
• Knowledge and implementation of Retrieval-Augmented Generation (RAG) and LLMs
• Experience with web development through Gradio, Streamlit, etc.
Company:
Swift is a privately held, mission-driven and employee-focused services and solutions company headquartered in Reston, Virginia. Founded in 2019, the company is headquartered in Reston, USA, with a team of 201-500 employees. The company is currently Growth Stage.

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