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Vantor

Mid-level Back-End Software Engineer – TS/SCI

Vantor

. Design, develop, test, and maintain scalable server-side applications, services, microservices, and supporting software components .

Posted 11/3/2026full-timeUnited StatesSeniorLead💰 $140,000 - $200,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in designing and developing scalable server-side applications and RESTful APIs, with a strong focus on performance optimization and security mechanisms. Proficient in collaborating with cross-functional teams to deliver reliable software solutions for government clients.

Highest-signal resume keywords
Active TS/SCI ClearanceBack-End Programming Languages (Python, Java, Go, C#)RESTful API DevelopmentMicroservices ArchitectureRelational and NoSQL Databases

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Server-Side Application DevelopmentRESTful API DesignMicroservices DevelopmentPerformance OptimizationAutomated TestingCI/CDAgile DevelopmentData ProcessingSecurity MechanismsError Handling
Soft Skills
CollaborationProblem SolvingCommunication
Tools & Technologies
Spring BootFastAPIFlask.NETApache SparkHadoopKafkaElasticsearchAWSDocker
Certifications & Qualifications
Bachelor's Degree in Computer Science or Related Field
Industry Keywords
U.S. GovernmentExport ControlITARRegulated EnvironmentsInfrastructure-as-Code

Tech Stack

Tools & technologies
ApacheAWSAzureCloudDockerElasticSearchFlaskGoogle Cloud PlatformHadoopJavaKafkaKubernetesMicroservicesNoSQLPythonSparkSpringSpring BootSpringBootTypeScriptGo.NET

About the role

Key responsibilities & impact
  • Design, develop, test, and maintain scalable server-side applications, services, microservices, and supporting software components
  • Develop and maintain RESTful APIs and service interfaces integrating data platforms, applications, databases, and external systems
  • Build software components and services supporting data ingestion, processing, querying, access, and analytics across distributed data environments
  • Optimize application performance and troubleshoot complex software issues
  • Implement security, authentication, authorization, and error-handling mechanisms
  • Participate in technical design reviews, code reviews, automated testing, CI/CD activities, and Agile development ceremonies
  • Collaborate with data engineers, data scientists, front-end developers, systems engineers, and government stakeholders
  • Deliver and sustain reliable, mission-focused software solutions for a U.S. Government customer

Requirements

What you’ll need
  • Must be a U.S. Citizen
  • Active TS/SCI clearance required, with willingness to obtain a CI poly
  • Bachelor's degree in computer science, software engineering, information systems, or related field
  • 8+ years of total professional experience in a technical support role
  • Experience in software engineering, back-end application development, or a related technical discipline
  • Strong proficiency in at least one modern back-end programming language, such as Python, Java, Go, or C#
  • Experience developing production-quality software
  • Experience designing and developing RESTful APIs, server-side applications, and distributed software components
  • Proficiency in relational and/or NoSQL databases
  • Willingness to work onsite at least 75% (or as needs dictate) from either Herndon, VA or Westminster, CO
  • Export control/ITAR roles may require U.S. person status
  • Preferred: experience with microservices, distributed applications, Spring Boot, FastAPI, Flask, .NET, Apache Spark, Hadoop, Kafka, Elasticsearch, AWS, Microsoft Azure, Google Cloud Platform, Docker, Kubernetes, CI/CD, Git, automated testing, DevSecOps, OAuth 2.0, OpenID Connect, Agile/Scrum, infrastructure-as-code, and regulated environments

Benefits

Comp & perks
  • 401(k) with company match
  • Mental health resources
  • Student loan repayment assistance
  • Adoption reimbursement
  • Pet insurance
  • Competitive total rewards package