# Contract Support Assistant (CSA) / Acquisition Planner

> XMSTART · Chantilly, United States · Full-time · Posted 2026-06-22

**Workplace:** on_site

**Department:** SC's

## Description

XMSTART is looking for a Contract Support Assistant / Acquisition Planner to join our team! Candidate shall perform a range of contract administrative and acquisition planning functions leading to compliant and responsive contract awards, modifications, invoicing, and other actions, including day-to-day office management support as follows:

-   Provide direct support to a Government Contracting Officer (CO) in execution of their duties and responsibilities
-   Provide contracting assistance to technical personnel involved in development of statement of work or data deliverable requirements
-   Draft contracts and contract modifications in the Government’s contracting application
-   Prepare minor contract modifications and associated supporting documentation for actions such as funding, award fee, period of performance extension, and administrative modifications
-   Enter contractual information into the Government’s contracting application, as required
-   Monitor and evaluate contractor performance for compliance with contract terms/conditions and ensure timely submission of contract deliverables
-   Review completed official contract files to determine all contractual actions are satisfied
-   General office management support, such as logistical support, document generation and review for content and format, filing, files maintenance, photocopying, scheduling meetings/rooms, and calendar management
-   Organize and make compliant all contract e-folders
-   Assist with invoice processing
-   Send daily emails to Government personnel for pending invoices
-   Organize and track Government certifications and transcripts
-   Coordinate Award Fee briefings
-   Develop tracking systems for action items and other areas as necessary
-   Generate contract reports and Draft closeout documents
-   Prepare and submit expired contracts into the contract close-out process
-   Maintain and track schedule of program acquisition activities
-   Perform administrative support for source selections
-   Perform acquisition planning actions as directed by Lead Acquisition Planner

## Requirements

**Security Clearance:**

-   **Active TS/SCI clearance with CI Polygraph**

## Apply

[Apply at XMSTART](https://apply.workable.com/xm-start/j/CBD99730EC/apply)

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