Company profile

CSS Tech Stack

Science and environmental support contractor for federal research programs

Environmental Services Fairfax, Virginia 201–500 employees Founded 1988 Privately Held

CSS is a Fairfax-based contractor supplying scientists and analysts to federal environmental and marine research programs. Its stack pairs analytical chemistry tooling (GC/MS, LC/MS/MS, MassHunter, LIMS) with geospatial software (ArcGIS Pro, QGIS, ERDAS Imagine) and Python, MATLAB and SAS. Accelerating, research-led hiring centers on eDNA, population genomics and marine mammal acoustics, which points to growing fisheries and protected-species science work.

Tech Stack 50 technologies

Core StackPython MATLAB SAS Oracle Jira Adobe Creative Cloud Figma WordPress Canva ArcGIS iCIMS AWS Microsoft Access SQL Developer CMMS YouTube Studio Looker Studio GC/MS LC/MS/MS MassHunter LIMS GIS Google Drive Agisoft Metashape ArcGIS Pro Google Meet Adobe Connect QGIS ERDAS Imagine Global Mapper+20 more

What CSS Is BuildingChallenges and projects from their job posts

◆Challenges

Meeting PARR Act and legislative mandates
Improving data analysis and identifying data gaps
Assessing stressor and human-activity risks
Efficient data delivery
Protecting marine species habitats

▲Active Projects

eDNA, RADseq and population genomics analysis
Animal abundance and marine mammal population models
Passive acoustic monitoring of cetacean species
Quantitative risk assessment of stressors
Logbook processing and trip interview program

Hiring Activity

Accelerating20 roles · 10 in 30d

Department

Research

Data

Engineering

Ops

Communications

Healthcare

Support

Seniority

Mid

Senior

Junior

Manager

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About CSS

CSS, founded in 1988 and headquartered in Fairfax, Virginia, provides scientific and technical support services to federal, state and regional government clients. Its work spans environmental health and safety, compliance, natural resources management, earth and life sciences, transportation safety, and emergency response. Engagements range from short-turnaround tasks to multi-year programs involving subcontractors. The privately held firm employs 201–500 people and hires within the United States.

HeadquartersFairfax, Virginia

Company Size201–500 employees

Founded1988

Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does CSS (css-inc.com) use?

CSS uses Python, MATLAB, SAS and Oracle for analysis, plus ArcGIS Pro, QGIS and ERDAS Imagine for geospatial work, and GC/MS, LC/MS/MS, MassHunter and LIMS in the lab. AWS, Jira and iCIMS are also in use.

What is CSS working on?

Job posts point to eDNA data analysis, RADseq and population genomics, spatially explicit animal abundance models, marine mammal population dynamics models, and passive acoustic monitoring of cetacean species.

Is CSS hiring researchers?

Yes. Hiring is accelerating and research is the largest function, followed by data, engineering and operations. Most openings are mid-level, and all roles are based in the United States.

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How this profile is built

CSS's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.