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/zAALM2
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
-
Wire Center Engineer
Colorado Springs, CO
Mountain Ltd. is looking for a Wire Center Engineer to work in the Colorado Springs, CO area! Shape the future. Summit success. Join our team and come part of a legacy that has been at the forefront of engineering excellence since 1979. Mountain Ltd. h...
Date Posted: 04/09/2026 Recommended
-
AEM Developer Architect
Centennial , Colorado
Job Title: AEM Developer Architect Location: Centennial, Colorado, United States Type: Contract To Hire Contractor Work Model: Onsite Hours: 40.0 Responsibilities Lead the design and development of enterprise-grade AEM solutions focusing on modularity,...
Date Posted: 04/03/2026 Recommended
-
AEM Developer Architect
Centennial , Colorado
Job Title: AEM Developer Architect Location: Centennial, Colorado Type: Contract To Hire Contractor Work Model: Onsite Responsibilities Lead the design and development of enterprise-grade AEM solutions focusing on modularity, scalability, and maintaina...
Date Posted: 03/18/2026 Recommended
-
Senior React Developer
Centennial , Colorado
Job Title: Senior React Developer Job Category: Software Development/ Engineering Job Type: Contract to hire Location: Centennial, Colorado, United States No.Openings: 1 Description: Senior React Developer Position Description Senior React Developer to...
Date Posted: 03/18/2026 Recommended
-
AEM Developer Architect
Centennial , Colorado
Tittle: AEM Developer Architect Location : Centennial, Colorado Mode : Hybrid (3days in office – 2 days remote) Duration : Contract to Hire Years Of Exp Required : 14+ Years Roles/Responsibilities: Design and implement enterprise-grade AEM solutions wi...
Date Posted: 04/10/2026 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
-
Full Stack .NET Developer
Pensacola, FL
Full Stack .NET Developer .NET, JavaScript, React, Azure Cloud 10+ yrs of experience Hybrid 3 days a week on-site, Pensacola, FL Hourly Rate: $75-$80/hr. range W2 Multiyear Contract System One has a multi-year contract opening for a senior-level full-s...
Date Posted: 04/02/2026 Recommended
-
Energy Efficiency Engineer (Mid-Level)
Denver, Colorado
Job Title: Energy Efficiency Engineer (Mid-Level) Location: Denver, CO Type: 12 month Contract Compensation: $40.00 Contractor Work Model: Hybrid – onsite and remote Responsibilities Perform engineering calculations to estimate energy savings for custo...
Date Posted: 04/27/2026 Recommended
-
Civil PE (Colorado)
Englewood, Colorado
Civil PE Engineer System One is partnering with an architectural firm seeking a Civil PE Engineer in the Englewood, Colorado area. Responsibilities include: Lead site civil projects from start to finish, including initial due diligence, entitlement, de...
Date Posted: 04/03/2026 Recommended
-
Civil Engineering Technician – Water / Utilities
Denver, Colorado
Civil Engineering Technician – Water / Utilities Onsite – 5 Days per Week Must reside within 50 miles of one of the following locations: Denver, CO Phoenix, AZ San Marcos, CA Tualatin, OR Relocation assistance is not available. Position Overview We are...
Date Posted: 02/18/2026 Recommended
-
Sr Full Stack .NET Developer
Arlington, Virginia
Job Title: Sr Full Stack .NET Developer Rosslyn, VA - Hybrid, 4 days a week on-site Type: Contract To Hire Compensation:$90/hr. to $100/hr. Range, commensurate with experience Minimum Clearance Required to Start: Secret System One IT has an immediate c...
Date Posted: 04/17/2026 Recommended
-
Developer Team Lead
Melbourne, FL
Job Title: Developer Team Lead Location: Melbourne, FL Developer Team Lead Developer Team Lead Responsibilities: • Provide occasional after-hours support to answer questions and resolve problems. • Lead and mentor software developers in the implementat...
Date Posted: 02/03/2026 Recommended
-
System Engineer
Pittsburgh, Pennsylvania
Job Title: Electrical Final Assembly Foreman Location: Remote + Travel Type: Contract or Direct Hire Systems Engineer Position Overview The Systems Engineer is responsible for designing, integrating, and supporting complex hardware and software systems...
Date Posted: 03/25/2026 Recommended
-
Full Stack Developer
Atlanta, Georgia
Full Stack Developer Mostly Remote but must be available for onsite work in Atlanta, GA as needed GC Holders and US Citizens per government contract Must be able to obtain Public Trust Clearance Compensation: up to $128K commensurate with experience As...
Date Posted: 04/30/2026 Recommended
-
EPC Project Controls Manager
Wheatfield, IN
Job Title: EPC Project Controls Manager Location: Hire will start from the Downers Grove, IL office and relocate to Wheatfield, IN once project mobilizes in August 2026. Type: Contract to Direct Hire (possible) Compensation: $TBD (exempt) Contractor Wo...
Date Posted: 02/27/2026 Recommended
-
Software Developer
Washington, District Of Columbia
Title: Software Developer Location: Washington, DC Clearance: Active Secret clearance/Top-Secret preferred Type: Direct Hire Contact: Crystaldinnocenti@systemone.com Successful Software Developer's demonstrate competency in integrating advanced technol...
Date Posted: 03/25/2026 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
-
OSP Engineer II
Spokane Valley, WA
Mountain Ltd. has an opening for an OSP Engineer in the Spokane, WA Area! Since 1979, Mountain Ltd has successfully created and supported turnkey engineering solutions for traditional and wireless telecom providers across the United States. We are a na...
Date Posted: 04/27/2026 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
-
Joint Use QC Engineer
Star, ID
Mountain Ltd. is seeking an OSP Engineer to work Remotely! This will be working as a Permit/ROW QC Engineer. Mountain Ltd. is a telecommunications service provider that has been in the industry for over 40 years. We are a proven leader in engineering s...
Date Posted: 04/30/2026 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: 04/20/2026 Recommended
-
Mechanical Engineer
Los Angeles, CA
Job Title: Mechanical Engineer Location: Los Angeles, CA Type: Contract Compensation: $50 - $75/hour (Based on Experience) Contractor Work Model: Onsite – onsite Security Clearance: Must be a U.S. citizen or national, U.S. permanent resident (current G...
Date Posted: 04/30/2026 Recommended
-
Power BI Developer (Secret clearance)
Fort Belvoir, VA
Power BI Developer Secret clearance Fort Belvoir, VA – hybrid preferred Must have Security+ or equivalent certification Required Qualifications: • Bachelor’s degree in Computer Science, Information Technology, or a related field. • 3-5+ years of experi...
Date Posted: 03/30/2026 Recommended
-
Construction Project Manager
Catoosa, Oklahoma
System One is working with a local client to find a Construction Project Manager in Tulsa Ok. Job Description Responsible for managing and coordinating assigned construction projects from initiation through execution to successful completion. This role...
Date Posted: 04/22/2026 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
-
Electrical - Project Engineer
Raleigh, North Carolina
Electrical Project Engineer ? Raleigh, NC | Full-Time | Hybrid Work Schedule Available Are you a skilled Electrical Engineer looking for an opportunity to lead complex building system projects and make a lasting impact? Join a collaborative, employee-o...
Date Posted: 02/09/2026 Recommended
-
Process Engineer
Houston, TX
Job Title: Process Engineer Location: Houston, TX Type: Direct Hire Compensation: $100,000.00 - $110,000.00 onsite Security Clearance: Transportation Worker Identification Credentials (TWIC) Requirements Education & Professional Experience Academic Bac...
Date Posted: 04/15/2026 Recommended
-
Project Engineer - Industrial/Structural
Richland, Washington
Job Title: Project Engineer - Industrial/Structural Location: Richland, Washington Type: Contract To Hire Compensation: $55.00 - 75.00 hourly Contractor Work Model: Onsite Hours: Mon-Fri 8am-5pm Project Engineer - Industrial/Structural In a world of po...
Date Posted: 03/26/2026 Recommended
-
API developer with Tenable
McLean, VA
Job Title: API developer with Tenable Location: McLean, VA Type: Contract To Hire Compensation: $110,000.00 - $150,000.00 Contractor Work Model: Hybrid – onsite and remote Responsibilities Develop and maintain custom connectors between Tenable and inte...
Date Posted: 03/17/2026 Recommended
-
Senior Civil Structural Engineer
Downers Grove, IL
Job Title: Senior Structural Engineer Location: Downers Grove, IL Type: Contract Compensation: $70/hr (DOE) Contractor Work Model: Onsite Hours: 40 hours/week System One is e are seeking a high-caliber Experienced Structural Engineer to join our Projec...
Date Posted: 04/23/2026 Recommended