Senior Back-End Engineer, TS/SCI Clearance

Vantor Holdings, Inc.; Westminster (CO); On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

401(k) match

Mental health resources

Student loan repayment

Adoption reimbursement

Pet insurance

Job summary

Vantor Holdings, Inc. seeks an experienced Back-End Software Engineer to support a U.S. Government customer.

You will design, develop, and maintain scalable server-side applications, services, APIs, and data processing components in a multidisciplinary Agile team. The role requires TS/SCI clearance, on-site work in Westminster, CO or Herndon, VA, strong backend language skills (Python/Java/Go/C#), and a focus on security, reliability, and performance.

Qualifications

• Bachelor’s degree in a technical field with 8+ years of total professional experience in software/technical roles.
• Demonstrated experience in software/back-end development or related discipline.
• Proficiency in at least one modern back-end language (Python, Java, Go, or C#) with production-quality software experience.
• Experience designing RESTful APIs and distributed components, with relational and/or NoSQL databases.
• Willingness to work onsite at least 75% from Herndon, VA or Westminster, CO.

Responsibilities

• Back-End Application Development: design, develop, test, and maintain scalable server-side apps, services, microservices, and components.
• API and System Integration: develop RESTful APIs and interfaces for data platforms, databases, and external systems.
• Data Platform Enablement: build components for data ingestion, processing, querying, and analytics across distributed environments.
• Performance, Reliability, and Security: optimize performance and implement authentication/authorization and secure coding practices.
• Agile Development and Collaboration: participate in design reviews, CI/CD, automated testing, and cross-functional collaboration.

Skills

Back-end development

API design

Distributed systems

Cloud platforms

CI/CD

Education

Bachelor's degree

Tools

Spring Boot

Docker

Kubernetes

AWS

Job description

Vantor Holdings, Inc. seeks an experienced Back-End Software Engineer to support a U.S. Government customer.

You will design, develop, and maintain scalable server-side applications, services, APIs, and data processing components in a multidisciplinary Agile team. The role requires TS/SCI clearance, on-site work in Westminster, CO or Herndon, VA, strong backend language skills (Python/Java/Go/C#), and a focus on security, reliability, and performance.