JOBSEARCHER
OCCUPATIONS
INDUSTRIES
LOCATIONS
COMPANIES
SENIORITY
EXPLORE
SIGN IN
Home
>
Companies
>
Leffler Consulting
Leffler Consulting
Related Locations:
Chantilly, VA
Springfield, VA
Gaithersburg, MD
Fairfax, VA
Top Occupations:
Management Analysts
Accountants and Auditors
Cost Estimators
Aerospace Engineers
Budget Analysts
Top Industries:
Other Scientific and Technical Consulting Services
Other Management Consulting Services
Space Research and Technology
Administrative Management and General Management Consulting Services
KEYWORDS
LOCATIONS
EXACT
NEARBY
Advanced search
1
SEARCH
112
jobs
at
Leffler Consulting
for all time
Save
Filter
<
Date
All time
Model Based System Engineer – TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L6 Lead
April 12th, 2026
Engineers, All Other
Engineering Services
Show all >
Ground Systems Integration Engineer (GSIE)/TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L6 Lead
April 12th, 2026
Computer Systems Engineers/Architects
Engineering Services
Show all >
EVM Analyst - CI Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 9th, 2026
Management Analysts
Other Scientific and Technical Consulting Services
Show all >
Senior Budget Analyst - CI Polygraph REQUIRED
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 9th, 2026
Budget Analysts
Other General Government Support
Show all >
FIAR Consultant - Secret Clearance
NEXT STEPS
Leffler Consulting
Chantilly, VA
L6 Lead
August 9th, 2026
Accountants and Auditors
Other Management Consulting Services
Show all >
Senior Tableau Developer - TS/SCI Clearance with CI Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 9th, 2026
Business Intelligence Analysts
Other Scientific and Technical Consulting Services
Show all >
Cost Analyst – TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L3 Junior
April 12th, 2026
Cost Estimators
Other Scientific and Technical Consulting Services
Show all >
Cleared Budget Analyst | TS/SCI, PPBE Specialist
NEXT STEPS
Leffler Consulting
Arlington, VA
L4 Mid
June 7th, 2026
Budget Analysts
Other General Government Support
Show all >
Cost Analyst - TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Chantilly, VA
L3 Junior
June 22nd, 2026
Cost Estimators
Space Research and Technology
Show all >
Administrative Assistant - TS/SCI with CI Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L3 Junior
August 11th, 2026
Secretaries and Administrative Assistants, Except Legal, Medical, and Executive
Administrative Management and General Management Consulting Services
Show all >
Space Systems Cost Analyst TS/SCI w/ Poly
NEXT STEPS
Leffler Consulting
Chantilly, VA
L3 Junior
June 22nd, 2026
Cost Estimators
Space Research and Technology
Show all >
Senior Cost Engineer/Estimator (TS/SCI Clearance w/CI Poly Required)
NEXT STEPS
Leffler Consulting
Chantilly, VA
L5 Senior
June 25th, 2026
Cost Estimators
Space Research and Technology
Show all >
Acquisition Support Engineer - TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Chantilly, VA
L6 Lead
June 26th, 2026
Purchasing Agents, Except Wholesale, Retail, and Farm Products
Space Research and Technology
Show all >
Audit Consultants (Entry and Junior Levels) – TS/SCI Clearance Required
APPLY
Leffler Consulting
Springfield, VA
L5 Senior
October 8th, 2026
Accountants and Auditors
Other Management Consulting Services
Show all >
Senior Software Developer - Secret Clearance required
APPLY
Leffler Consulting
Reston, VA
L6 Lead
August 6th, 2026
Software Developers
Custom Computer Programming Services
Show all >
Senior Program Control Analyst - TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Chantilly, VA
L5 Senior
July 4th, 2026
Budget Analysts
Other General Government Support
Show all >
Spacecraft Attitude Control Systems Engineer – TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L6 Lead
August 5th, 2026
Aerospace Engineers
Space Research and Technology
Show all >
Acquisition Support Engineer – TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L6 Lead
August 5th, 2026
Purchasing Agents, Except Wholesale, Retail, and Farm Products
Engineering Services
Show all >
Property Administrator - TS/SCI Required
NEXT STEPS
Leffler Consulting
Washington, DC
L5 Senior
August 5th, 2026
Property, Real Estate, and Community Association Managers
Nonresidential Property Managers
Show all >
Action Officer - TS/SCI Clearance with CI Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 5th, 2026
Business Operations Specialists, All Other
Other Scientific and Technical Consulting Services
Show all >
Executive Assistant - TS/SCI with Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L3 Junior
September 4th, 2026
Secretaries and Administrative Assistants, Except Legal, Medical, and Executive
Administrative Management and General Management Consulting Services
Show all >
EVM/IPM Analyst - TS/SCI required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
September 6th, 2026
Management Analysts
Other Scientific and Technical Consulting Services
Show all >
Resource Analyst (Budget) - TS/SCI with Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
September 6th, 2026
Budget Analysts
Administrative Management and General Management Consulting Services
Show all >
Senior Earned Value Management (EVM) Analyst - TS/SCI Clearance w/CI Poly Required
APPLY
Leffler Consulting
Chantilly, VA
L5 Senior
October 13th, 2026
Management Analysts
Other Scientific and Technical Consulting Services
Show all >
Budget Development Analyst SME – TS/SCI Clearance w/CI Poly
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
July 18th, 2026
Budget Analysts
Administrative Management and General Management Consulting Services
Show all >
Schedule Analyst - TS/SCI with CI Polygraph
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L3 Junior
August 27th, 2026
Project Management Specialists
Other Scientific and Technical Consulting Services
Show all >
Scheduler - TS/SCI
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L4 Mid
August 4th, 2026
Project Management Specialists
Other Scientific and Technical Consulting Services
Show all >
Resource Analyst - TS/SCI with CI Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 4th, 2026
Management Analysts
Other Scientific and Technical Consulting Services
Show all >
Administrative Assistant – TS/SCI Clearance
NEXT STEPS
Leffler Consulting
Arlington, VA
L4 Mid
July 27th, 2026
Secretaries and Administrative Assistants, Except Legal, Medical, and Executive
Administrative Management and General Management Consulting Services
Show all >
Senior Audit Manager - TS/SCI REQUIRED
NEXT STEPS
Leffler Consulting
Fairfax, VA
L6 Lead
August 6th, 2026
Accountants and Auditors
Administrative Management and General Management Consulting Services
Show all >
Senior Budget Analyst - TSSCI Required
NEXT STEPS
Leffler Consulting
Arlington, VA
L5 Senior
August 6th, 2026
Budget Analysts
National Security
Show all >
Spacecraft Ground Systems Engineer - CI Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L6 Lead
August 6th, 2026
Project Management Specialists
Space Research and Technology
Show all >
Budget Analyst - TS/SCI required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 6th, 2026
Budget Analysts
Administrative Management and General Management Consulting Services
Show all >
Senior Data Scientist - TS/SCI Clearance with C.I. Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 6th, 2026
Data Scientists
Other Scientific and Technical Consulting Services
Show all >
Human Resources Specialist - CI Polygraph required
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 10th, 2026
Human Resources Specialists
Administrative Management and General Management Consulting Services
Show all >
Contract Administrator - TS/SCI Clearance with CI Polygraph REQUIRED
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L5 Senior
August 10th, 2026
Secretaries and Administrative Assistants, Except Legal, Medical, and Executive
Administrative Management and General Management Consulting Services
Show all >
Ground Systems Integration Engineer - TS/SCI with CI Polygraph
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L6 Lead
August 11th, 2026
Computer Systems Engineers/Architects
Space Research and Technology
Show all >
Junior Financial Analyst - TS/SCI Clearance required
NEXT STEPS
Leffler Consulting
Fairfax, VA
L4 Mid
August 11th, 2026
Accountants and Auditors
Other Management Consulting Services
Show all >
Administrative Assistant/Legal Secretary
NEXT STEPS
Leffler Consulting
Gaithersburg, MD
L3 Junior
August 22nd, 2026
Secretaries and Administrative Assistants, Except Legal, Medical, and Executive
Other Scientific and Technical Consulting Services
Show all >
Staff Accountant - Secret Clearance required
NEXT STEPS
Leffler Consulting
Washington, DC
L6 Lead
August 22nd, 2026
Accountants and Auditors
National Security
Show all >
1
2
3