Senior Systems Engineer

Job Locations US-DC-Washington
ID
2026-9181
Category
Systems Administrator/Engineer
Type
Regular Full-Time

Responsibilities & Qualifications

Responsibilities

  • Design, develop, and maintain features for a web-based application using C# and the .NET framework
  • Enhance and support applications built on SharePoint Server and SQL Server platforms
  • Develop and maintain backend services, APIs, and database integrations
  • Support frontend functionality to improve usability and performance for analyst-facing tools
  • Troubleshoot and resolve application defects, performance issues, and system integration challenges
  • Perform system testing, debugging, and validation of new and existing features
  • Support ongoing operations and maintenance (O&M), including bug fixes and minor enhancements
  • Participate in Agile development processes, including sprint planning, backlog grooming, and iterative delivery
  • Ensure compliance with secure development practices and government cybersecurity standards

Required Skills & Qualifications

  • Strong experience in full-stack development using C#/.NET and Visual Studio
  • Experience working with SharePoint Server (on-premise) and customizing SharePoint-based applications
  • Proficiency in SQL Server, including database design, querying, and performance optimization
  • Experience developing and maintaining web-based applications in a secure, enterprise environment
  • Ability to troubleshoot complex application and integration issues
  • Familiarity with Agile methodologies and development tools (e.g., Jira)
  • Experience supporting both development and maintenance (O&M) activities
  • Understanding of secure coding practices and working within regulated/government environments
  • Bachelor’s degree or equivalent and up to eight (8) years of relevant experience.
  • Top Secret clearance.

Overview

We are seeking a Senior Systems Engineer to support the enhancement and sustainment of a mission-critical, web-based application used by law enforcement and intelligence analysts. This is a hands-on full-stack development role focused on maintaining and improving an existing application built on a Microsoft technology stack, including C#, SharePoint Server, and SQL Server, within a secure, on-premises environment.

 

We offer our full-time employees a competitive benefits package to include health, dental, vision, 401K, life insurance, short-term and long-term disability plans, vacation time and holidays.

Visit us at www.TekSynap.com

Apply now to explore jobs with us!  

The safety and health of our employees is of the utmost importance. Employees are required to comply with any vaccination requirements mandated by contract, applicable law or regulation.

 

By applying to a role at TekSynap you are providing consent to receive text messages regarding your interview and employment status.  If at any time you would like to opt out of text messaging, respond "STOP". As part of the application process, you agree that TekSynap Corporation may retain and use your name, e-mail, and contact information for purposes related to employment consideration.  

Additional Job Information

WORK ENVIRONMENT AND PHYSICAL DEMANDS

The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of the job.  Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions. 

  • Location: Washington, DC
  • Type of environment: Onsite office
  • Noise level: Medium
  • Work schedule: Schedule is day shift Monday – Friday. 
  • Amount of Travel: Less than 10%

PHYSICAL DEMANDS

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

 

While performing the duties of this job, the employee is regularly required to use hands to handle, feel, touch; reach with hands and arms; talk and hear. The employee is regularly required to stand; walk; sit; climb or balance; and stoop, kneel, crouch, or crawl. The employee is regularly required to lift up to 10 pounds. The employee is frequently required to lift up to 25 pounds; and up to 50 pounds. The vision requirements include close vision, distance vision, peripheral vision, depth perception, and ability to adjust focus.

 

WORK AUTHORIZATION/SECURITY CLEARANCE

  • U.S Citizenship Required
  • Top Secret Clearance

WAGE INFORMATION

Target salary range: $93,000.00 - $125,000.00.  The salary range displayed is an estimate and will be determined on several factors regarding the individual’s particular combination of education, knowledge, skills, competencies and experience, as well as contract parameters and organizational requirements.  The displayed salary is one component of the total compensation package for employees. 

 

OTHER DUTIES

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

 

TekSynap is a drug-free workplace. We reserve the right to conduct drug testing in accordance with federal, state, and local laws. All employees and candidates may be subject to drug screening if deemed necessary to ensure a safe and compliant working environment.

 

EQUAL EMPLOYMENT OPPORTUNITY

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

 

TekSynap is a drug-free workplace. We reserve the right to conduct drug testing in accordance with federal, state, and local laws. All employees and candidates may be subject to drug screening if deemed necessary to ensure a safe and compliant working environment.

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