Senior Back End Software Developer
Colorado Springs, Colorado
Experience: 0
Category: Information Technology
Contractor Work Model: Onsite
Brand: System One
Compensation Range: 130000.00 - 175000.00
Job ID: 350126
Date Posted: 05/01/2026
Shortcut: http://jobs.systemone.com/8Bi9Ks
Senior Back End Software Developer
Location: Colorado Springs, Colorado
Work Model: Onsite
Clearance: Eligible – will be processed for Top Secret eventually
If interested reach out directly to kimberly.spicer@systemone.com or text 301-252-8762
Responsibilities
- Develop and maintain server-side logic by writing code that powers the application's functionality, handles user requests, and manages data.
- Create APIs that allow different parts of the application, or different applications, to communicate with each other.
- Design database schemas, write queries, and ensure data integrity and security.
- Ensure the application can handle a growing number of users and data efficiently.
- Work closely with front-end developers to integrate the back-end functionality with the user interface.
- Implement security measures to protect sensitive data and prevent unauthorized access.
- Participate in code reviews, debug developed code, and stay current with software development trends.
- Ensure all changes or adaptations are thoroughly and meticulously reviewed, tested, and verified to eliminate application downtime or degradation.
- Collaborate with cross-functional teams, develop reusable code components, and ensure application accessibility.
- Actively participate in Integrated Product Teams (IPT’s) and other engineering working groups to review, assess, and mature engineering artifacts such as CONOPs, system architecture, system interfaces, data models, and ICDs.
- Provide meeting coordination, technical expertise, and software development to assist customer decision-makers.
- B.S. in Computer Science, Computer Engineering, or equivalent STEM-based degree.
- 7+ years of experience as a Back-End Software Application Developer with a portfolio, and proficiency in modern object-oriented programming languages such as Python, Java, C++, Node.js, or Ruby.
- Experience with both SQL (e.g., MySQL, PostgreSQL) and NoSQL (e.g., MongoDB) databases.
- Familiarity with back-end frameworks like Django, Flask, Spring, or Express.js.
- Experience with cloud platforms like AWS, Azure, or Google Cloud.
- Experience with efficient data storage and retrieval.
- Strong, demonstrable understanding of modern design and coding principles and practices.
- Familiarity with version control systems (e.g., Git).
- Knowledge of software performance optimization.
- Strong problem-solving skills.
- Excellent communication and teamwork abilities.
- Nice to have: Advanced degree in Computer Science or related field. Experience with testing frameworks. Knowledge of security practices. Active TS/SCI. Space domain experience.
System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
#LI-KA1
#M1
Ref: #851-Rockville-S1
-
Staff Engineering Technician
Denver, Colorado
Job Title: Staff Engineering Technician Location: Denver, Colorado Type: Contract Compensation: Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: US Citizen required Overview Leave placeholder text here for recruiter to input Respo...
Date Posted: 05/28/2026 Recommended
-
IRM GRC ServiceNow Developer Senior
Englewood, Colorado
Job Title: IRM GRC ServiceNow Developer Senior Location: Englewood, CO Type: Contract To Hire Compensation: 130-160K Contractor Work Model: On-site Security Clearance: Clearable for a secret clearance (but don't have to have a current one to start). Du...
Date Posted: 04/29/2026 Recommended
-
Senior Mechanical Engineer - Remote
Denver, Colorado
Job Title: Remote Mechanical Engineer Location: Richland, WA Contract Duration: Contract with potential for contract-to-hire Compensation: $65 - $75.00/hr Work Model: Onsite or Remote with Travel Overview: System One is actively seeking a Senior Projec...
Date Posted: 05/04/2026 Recommended
-
Project Manager – Oil & Gas Facilities
Denver, Colorado
Project Manager – Oil & Gas Facilities Denver, Colorado Type: Contract To Hire Compensation: $70.00 - $76.00 Work Model: Hybrid – onsite and remote Hours: 40.0 System One is seeking a Project manager to join our team for a contract to hire opportunity ...
Date Posted: 06/26/2026 Recommended
-
HVAC Retro Controls Commissioning Manager
Denver, Colorado
Job Title: HVAC Retro Controls Commissioning Manager Location: Denver, Colorado Type: Direct Hire Compensation: $88,000 - $117,000 Overview The IS Technical Services Team Manager is responsible for the execution of Retro-Commissioning and Commissioning...
Date Posted: 05/29/2026 Recommended
-
Sr. Controls Engineer
Morgantown, West Virginia
Job Title: Sr. Controls Engineer Location: Morgantown, WV Type: Direct Hire Compensation: Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Responsibilities Develop the control architecture to ensure the facility is collecting the data and in...
Date Posted: 07/02/2026 Recommended
-
Senior Pipeline Estimator
Denver, Colorado
Job Title: Senior Pipeline Estimator Location: Denver, CO Type: Contract To Hire Compensation: $55.00 - $60.00 per hour Work Model: Hybrid – onsite and remote Responsibilities Prepare detailed cost estimates for Oil & Gas projects and programs Develop ...
Date Posted: 07/02/2026 Recommended
-
PL/SQL Developer
REMOTE, Virginia
Job Title: PL/SQL Developer Location: REMOTE, Virginia Responsibilities Develop and maintain Oracle PL/SQL solutions, including functions, procedures, triggers, and packages using Oracle 11g or newer. Participate in production implementations by partne...
Date Posted: 06/15/2026 Recommended
-
ServiceNow Developer
Fort Meade, Maryland
Job Title: ServiceNow Developer Location: Fort Meade, Maryland Type: Contract Contractor Work Model: Onsite – onsite Security Clearance: Must hold an active DoD Secret clearance and obtain Security+ certification within 14 days of hire. Responsibilitie...
Date Posted: 06/09/2026 Recommended
-
Data Developer
Arlington, Virginia
Job Title: Data Analyst/Developer Location: Arlington, Virginia Onsite Must be clearable Overview If interested reach out directly to kimberly.spicer@systemone.com or call/text 301-252-8762 Responsibilities Support the delivery of client solutions usin...
Date Posted: 06/10/2026 Recommended
-
.NET Mainframe Developer
Vienna , VA
Job Title: .NET Developer Location: Remote Type: Contract Contractor Work Model: Remote Responsibilities Design, develop, and enhance complex software applications supporting mission-critical, time-sensitive initiatives focused on integrating distribut...
Date Posted: 05/06/2026 Recommended
-
Global Quality Digital Operations - Engineer 4 - SAP S4 Hana
Lakewood, Colorado
Global Quality Digital Operations – Engineer 4 – SAP S4 Hana Direct Hire Lakewood, CO (Hybrid) Salary Range: $125,000 to $157,000, plus benefits. Salary commensurate with experience JOB SUMMARY The Engineer Level 4 – SAP S/4HANA Quality Engineer is a s...
Date Posted: 05/07/2026 Recommended
-
Engineering Technician (Production)
Sterling, Virginia
Job Title: Engineering Technician (Production) Location: Sterling, Virginia Type: Contract ( 2 plus years ) Compensation: $35.00 - 40.87/hr Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Eligibility to obtain a U.S. Government s...
Date Posted: 05/28/2026 Recommended
-
Java Developer (Secret Clearance)
Arlington, Virginia
Java Developer with OpenFGA experience Arlington, VA - hybrid (2 days a week onsite) Secret clearance is required to start Responsibilities: • Design, develop, and deploy cloud-native and containerized applications using Java and modern cloud technolog...
Date Posted: 06/12/2026 Recommended
-
ServiceNow Developer
Miramar, FL
Job Title: ServiceNow Developer Location: Miramar, FL Type: Direct Hire Compensation: Work Model: Hybrid – onsite and remote Hours: 40.0 Security Clearance: Responsibilities Own the development of the enterprise platform ecosystem using ServiceNow to s...
Date Posted: 06/17/2026 Recommended
-
Mechanical Engineer III
Perry, OH
Job Title: Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite – onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to Nuclear restrictions Overview System One is e a...
Date Posted: 06/22/2026 Recommended
-
Senior Java Developer
Evendale, Ohio
Job Title: Senior Java Developer (No C2C, W2 only with no sponsorship) Location: Evendale, Ohio Type: Direct Hire Compensation: $110,000 - $130,000 Hybrid – onsite Tue, Wed, Thr, remote Mon, Fri Responsibilities Work in a Scrum team, focusing on enhanc...
Date Posted: 06/25/2026 Recommended
-
Forgerock Developer
Salt Lake City, Utah
Job Title: Forgerock Developer Location: Salt Lake City, Utah Type: Contract To Hire Compensation: $0.00 Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Not specified Overview Leave placeholder text here for recruiter to input Re...
Date Posted: 04/10/2026 Recommended
-
I&C Engineer III
Perry, OH
Job Title: I&C Engineer Location: Perry, OH United States Type: Contract Hire Compensation: $50/hr plus or minus depending on experience Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Must be a US Citizen due to Nuclear restrict...
Date Posted: 06/03/2026 Recommended
-
Sr. Process Engineer
Morgantown, West Virginia
Job Title: Sr. Process Engineer Location: Morgantown, WV Type: Direct Hire Compensation: Work Model: Onsite – onsite Responsibilities Lead, design, install, commission, maintain, and improve low-acid aseptic process and equipment. Implement and maintai...
Date Posted: 07/02/2026 Recommended
-
Production Worker
Colonial Heights, VA
Job Title: Production Worker Location: Colonial Heights, VA Overview The Production Worker is responsible for operating and monitoring manufacturing equipment, inspecting products to ensure quality standards, and maintaining a safe and efficient work e...
Date Posted: 04/29/2026 Recommended
-
Java Mainframe Developer
Vienna , VA
Job Title: Java Developer Location: Remote Type: Contract Responsibilities Design, develop, and enhance complex software applications supporting mission-critical, time-sensitive initiatives focused on integrating distributed applications with the organ...
Date Posted: 05/06/2026 Recommended
-
Electrical Controls Engineer
Kansas City, MO
Electrical Controls Engineer Full-Time | Kansas City, MO Travel: Up to 50% (including occasional extended trips) Position Overview Seeking an experienced Electrical Controls Engineer to support turnkey control system projects. This role involves collab...
Date Posted: 05/05/2026 Recommended
-
Reliability Engineer
Long Beach, California
Job Title: Reliability Engineer Location: Long Beach, California Type: Direct Hire Responsibilities Lead the development, design and installation of predictive maintenance programs and technology applications to identify dominant deterioration and fail...
Date Posted: 07/07/2026 Recommended
-
ServiceNow IRM Developer (remote)
Arlington, Wisconsin
Job Title: ServiceNow IRM Developer (remote) Location: Remote Type: Contract Contractor Work Model: Remote – offsite Responsibilities Design, develop, and implement ServiceNow IRM solutions—including custom applications, workflows, forms, UI policies, ...
Date Posted: 06/10/2026 Recommended
-
BIM Technician
Tulsa, Oklahoma
BIM Technician Location: Tulsa Team: Architecture Education: Associates degree in AutoCAD and / or Revit or equivalent work experience - 1-3years experience SUMMARY A BIM Technician assists in all aspects of architectural documentation working within a...
Date Posted: 07/07/2026 Recommended
-
Product Engineer
callery, PA
Job Title: Product Engineer Location: Callery, PA Type: Direct Hire Compensation: $100,000.00 Contractor Work Model: Onsite – onsite Hours: 40.0 hours per week Security Clearance: Not specified Overview Under the direction of the Engineering Manager th...
Date Posted: 05/01/2026 Recommended
-
Software Developer (CNO)
Fort Meade, Maryland
Job Title: Software Developer (CNO) Location: Fort Meade, Maryland Type: Contract To Hire Work Model: Onsite Security Clearance: TS/SCI CI Poly Contact: Crystal.dinnocenti@systemone.com RESPONSIBILITIES Lead the designing, developing, documenting, test...
Date Posted: 07/01/2026 Recommended
-
Senior Mechanical Engineer
Salt lake city, Utah
Job Title: Senior Mechanical Engineer Location: Salt Lake City, Utah Type: Contract To Hire Compensation: $67.30 - $79.32 per hour Work Model: Hybrid – onsite and remote Hours: 40.0 Responsibilities Lead the mechanical design and technical execution of...
Date Posted: 07/08/2026 Recommended
-
Forgerock Developer
Salt Lake City, Utah
Job Title: Forgerock Developer Location: Salt Lake City, Utah Type: Contract To Hire Contractor Work Model: Onsite Hours: 40.0 Responsibilities Provide support and maintenance of various systems at the client site in Salt Lake City, UT. Be responsible ...
Date Posted: 06/04/2026 Recommended