This position requires an active U.S. Government Security Clearance at the TS/SCI level with required Polygraph.

Vantor is seeking a Full Stack Developer with a strong backend and platform engineering focus to design, build, andoptimizescalable, secure, and high-performance systems supporting mission-critical applications. This role emphasizes API design, microservices, data persistence, and operational excellence in a high-concurrency environment.

Responsibilities:

• Design, develop, andmaintainscalable backend services supporting RESTful andGraphQLAPIs
• Architect and implement microservices-based systems using containerized deployments
• Optimizebackend performance through caching, queueing, and efficient data-access patterns
• Design and manage relational and NoSQL databases, ensuring reliability, performance, and data integrity
• Build andmaintainCI/CD pipelines to automate testing, deployment, and monitoring
• Collaborate closely with frontend developers to ensure seamless integration andoptimaluser experience
• Support production systems through monitoring, troubleshooting, and performance tuning

Minimum Qualifications:

• Bachelor's degree in computer science or related area of study
• Developmental Labor Category: Minimum 1 year of experience with a Bachelor27s degree; or 2 years of experience with an Associate27s degree; or 3 years of experience with a High School diploma or GED
• Active/current TS/SCI with required polygraph
• Willingness to work onsite full time
• US citizenship required
• Strong experience with server-side development and API design (REST andGraphQL)
• Proven experience building and operating microservices architectures
• Hands-on experience with Docker and container orchestration platforms (Kubernetes)
• Strong experience with relational databases (PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB)
• Expertisein schema design, query optimization, indexing, migrations, and high-volume data performance
• Experience building andmaintainingCI/CD pipelines for automated delivery
• Working knowledge of modern frontend technologies (JavaScript, React, or Lit) sufficient for close collaboration with UI teams
• Experienceoptimizingsystems using caching, load balancing, and asynchronous processing techniques

Preferred Qualifications:

• Experience supporting or integrating LLM-powered applications, including AI-driven or adaptive user interfaces
• Familiarity with Redis, Memcached, or similar caching technologies
• Experience designing systems for mission-critical, high-concurrency environments
• Demonstrated ability to adapt to evolving requirements and incorporate emerging backend technologies and best practices

Pay Transparency: To support pay transparency, Vantor includes salary ranges in all U.S. job postings. Starting pay for this role will fall within the listed range and will be based on factors such as experience, qualifications, skills, location, and market conditions. Candidates who meet the minimum requirements for the role should not expect to receive compensation at the top of the range. The listed range reflects the expected pay for this position, and final offers will be determined based on each candidate27s experience, expertise, and alignment with the role.

For all other states, we use geographic cost of labor as an input to develop market-driven ranges for our roles, and as such, each location where we hire may have a different range.

Benefits: Vantor offers a competitive total rewards package that goes beyond the standard, including a robust 401(k) with company match, mental health resources, and unique perks like student loan repayment assistance, adoption reimbursement and pet insurance to support all aspects of your life. You can find more information on our benefits at: https://www.Vantor.com/careers

The application window is three days from the date the job is posted and will remain posted until a qualified candidate has been identified for hire. If the job is reposted regardless of reason, it will remain posted three days from the date the job is reposted and will remain reposted until a qualified candidate has been identified for hire.

The date of posting can be found on Vantor27s Career page at the top of each job posting.

To apply, submit your application via Vantor27s Career page.