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Freelance International Data Science Jobs (NOW HIRING)

ManTech International

Data Scientist

Arlington, VA · On-site

MANTECH International Corporation seeks a motivated, career and customer-oriented Data Scientist to join our team in Arlington, VA. This role is a remote role preferably in the Washington DC area. As ...

Unchain Data

The Crypto Data Science team is on a mission to accelerate Robinhood's position as the leading ... as international expansion, pro trader growth, and Wallet app adoption * Deliver robust, data ...

ISDC GLOBAL

Data Science Trainer

Delhi, OH · On-site

🚨 WE'RE HIRING | DATA SCIENCE TRAINER 🚨 📍 Location: Bangalore 💼 Experience: 5+ Years ... Willingness to travel is required About ISDC International Skill Development Corporation (ISDC) is ...

Democrance

NY · On-site

Our teams operate in a fast‑paced, high‑impact environment alongside international leaders from ... If you want to build our data science function from the ground up, work with one of Africa ...

CSS, Inc

Data Scientist

Charleston, SC · On-site

Experience Required: * Experience with data engineering, data management, or scientific data ... Support international data harmonization and interoperability efforts. At CSS, we are committed to ...

CSS, Inc

Data Scientist

Charleston, SC · On-site

Experience Required: * Experience with data engineering, data management, or scientific data ... Support international data harmonization and interoperability efforts. At CSS, we are committed to ...

Grifols, S.A

$43K - $43K/yr

Create Alert Would you like to join an international team working to improve the future of health ... This role is a unique blend of a data scientist, a decision scientist, and a strategic advisor. You ...

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Freelance International Data Science information

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How much do freelance international data science jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for freelance international data science in the United States is $47.71, according to ZipRecruiter salary data. Most workers in this role earn between $24.28 and $61.78 per hour, depending on experience, location, and employer.

What is the difference between Freelance International Data Science vs Freelance Data Analyst?

AspectFreelance International Data ScienceFreelance Data Analyst
Required SkillsAdvanced statistical analysis, machine learning, programming (Python, R)Data cleaning, visualization, basic statistical analysis
Work EnvironmentRemote, project-based, global clientsRemote or on-site, diverse industries
Common CertificationsData Science certifications (e.g., Coursera, edX)Data analysis certifications (e.g., Microsoft, Tableau)
Industry UsageTech, finance, healthcare, researchMarketing, retail, finance, operations

Freelance International Data Science involves advanced analytics, machine learning, and programming skills, often working on complex projects across various industries. Freelance Data Analysts focus on data cleaning, visualization, and basic analysis, typically in marketing or retail sectors. Both roles are remote and project-based but differ in technical depth and scope.

Can I do freelancing with data science?

Freelance data science involves providing data analysis, modeling, and consulting services independently. Data scientists often use tools like Python, R, and SQL, and may need strong communication skills and a portfolio to attract clients. It offers flexible schedules but requires self-motivation and the ability to manage multiple projects.
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Freelance International Data Science jobs near you
Infographic showing various Freelance International Data Science job openings in the United States as of September 2026, with employment types broken down into 1% Internship, 1% As Needed, 83% Full Time, 12% Part Time, and 3% Contract. Highlights an 85% Physical, 3% Hybrid, and 12% Remote job distribution, with an average salary of $99,230 per year, or $47.7 per hour.

Data Scientist

Arlington, VA • On-site

ManTech International
IT Services • 5 - 10K employees
Learn more about ManTech Internationalexternal

Full-time

Medical, Life, Retirement, PTO

Posted 12 days ago

ManTech rating

8.8

Company rating: 8.8 out of 10

Based on 15 frontline employees who took The Breakroom Quiz

48th of 247 rated software companies

Job description

General information
Requisition #
R70218
Locations
USA-VA-Arlington
Posting Date
08/27/2026
Security Clearance Required
Public Trust/Suitability
Remote Type
Hybrid
Time Type
Full time
Description & Requirements
Elevate your career with MANTECH International Corporation! Join a dynamic team dedicated to national security through cutting-edge technology. Since 1968, MANTECH has led in delivering advanced solutions to government intelligence, the Department of Defense, and Federal Civilian sectors. Dive into innovation in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Your journey to impactful work and rapid growth starts now-be extraordinary at MANTECH!
***This is for a future opportunity***
MANTECH International Corporation seeks a motivated, career and customer-oriented Data Scientist to join our team in Arlington, VA. This role is a remote role preferably in the Washington DC area.
As a Data Scientist, you will support the Internal Revenue Service's mission to improve tax compliance, fraud detection, and risk identification across large, complex tax and financial data environments. You will work directly with government clients, program managers, and technical teams to understand business and compliance challenges, design analytical approaches, and deliver data-driven solutions that inform enforcement, audit prioritization, and fraud prevention efforts.
In this role, you will develop, test, and deploy predictive and statistical models using structured and unstructured data to identify anomalies, non-compliance risk, and potential fraud within tax records and related datasets. You will contribute across the full data science lifecycle, from problem formulation and data exploration through model validation, deployment, and stakeholder communication.
Responsibilities include but are not limited to:
  • Prior programming experience, preferably in Python or R, including data exploration, feature engineering, model development, and writing modular, reusable, well-documented code within an iterative development process that includes peer review and collaboration
  • Demonstrated experience using Python, SQL, and Databricks for data analysis, modeling, statistical evaluation, and working with Markdown for technical documentation
  • Explore, clean, and wrangle large, complex datasets to uncover insights and identify opportunities for data science-driven solutions in support of assessments, gap analyses, and actionable recommendations for IRS stakeholders
  • Design, develop, test, validate, and implement quantitative and qualitative data science solutions and predictive risk models (including audit selection, refund review, and fraud prevention initiatives) that are modular, maintainable, adaptable to evolving government and regulatory requirements, and supported by robustness, sensitivity, and significance testing to ensure defensible and explainable results
  • Apply statistical and machine learning techniques (supervised and unsupervised) to anomaly detection, fraud identification, and non-compliance risk scoring to help prioritize cases based on compliance risk, fraud indicators, and business impact
  • Collaborate with clients, subject matter experts, and cross-functional teams to refine problem statements, requirements, and analytical approaches, while demonstrating the ability to work independently in a collaborative, fast-paced environment
  • Prepare and deliver technical and non-technical briefings, reports, and presentations to audiences with varying levels of analytical sophistication, translating business and compliance needs into technical solutions with strong interpersonal, written, and verbal communication skills

Minimum Qualifications:
  • Bachelor of Science degree in a relevant field such as statistics, computer science, economics, mathematics, analytics, data science, business, or social sciences
  • 2-10+ years of experience in data science, analytics, or a related technical field
  • Experience using version control systems (e.g., Git) and collaborative development practices
  • Strong understanding of relational databases and SQL
  • Comfortable learning new tools, methodologies, and domains, including working outside your comfort zone
  • Strong analytical mindset with a willingness to tackle complex mathematical and statistical challenges
  • Willingness to travel and work on-site at client locations as required by project needs

Preferred Qualifications:
  • Advanced degree (MS or PhD) in statistics, computer science, data science, mathematics, analytics, engineering, or related fields; experience applying advanced statistical concepts including sampling considerations, bias detection, weighting techniques, handling missing or outlier data, exploratory analysis, and longitudinal forecasting; and understanding of the data analytics lifecycle (e.g., CRISP-DM)
  • Experience with PySpark, Unity Catalog, and Jobs in Databricks, with familiarity using platforms and tools such as Databricks and AWS
  • Experience with Natural Language Processing (NLP) and text analytics applied to unstructured documents or case notes, as well as graph analytics and network analysis to identify relationships, fraud rings, or interconnected entities
  • Experience with containerization and environment management (e.g., venv, conda)
  • Experience operating in secure or remote government environments, including use of bash and command-line tools

Clearance Requirements:
  • Must currently possess an IRS Public Trust clearance with Full Background Investigation

Physical Requirements:
  • Must be able to remain in a stationary position 50%
  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
  • Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situation

The projected compensation range for this position is $83,300.00-$139,800.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.
MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.

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