Open Systems Technologies Corporation Header

Senior Full Stack Developer

Alexandria, VA

Job Description

Open Systems Technologies Corporation is a leader in the government contracting marketplace, providing Enterprise Security and Cloud Computing solutions to support large organizations. Our capabilities include supplying federal government entities and private businesses with software development, scientific and engineering technical assistance, systems integration, and enterprise security. Since its founding in 1996, OST has been committed to delivering high-quality, best-in-class results that bring added value to our clients while investing in our employees’ futures by providing exciting projects to work on, and robust benefits to include technical training and certifications, relocation assistance and a 401K match with immediate vesting.

Open Systems Technologies is searching for an experienced Full Stack Software Developer to provide software maintenance and engineering support under the Foundation Sustainment Services contract.

Responsibilities:

This role is responsible for Corrective, Adaptive, Preventive, and Perfective maintenance of maritime systems software. This role uses best practices and patterns to perform design, development, and automated testing of software modules via DevSecOps in an Agile team.

  • This role performs software systems development, including the design, development, troubleshooting, and debugging of software programs for software enhancements and maintenance.
  • Participate in peer reviews and unit testing and must be adaptable to different responsibilities.
  • Duties include software requirements analysis and development of software products in a maintenance setting.
  • This role is responsible for identifying software and hardware dependencies and capacities.
  • Creating and maintaining documentation is part of this role.

Core Qualifications:

  • Requires a BS in Information Systems, Information Technology, Computer Science or closely related discipline and 6+ years of prior relevant experience or Masters with 2+ years of prior relevant experience; OR 8 years of experience in lieu of degree.
  • Proficient in software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment.
  • Proficient in AWS/Cloud technologies and experience with cloud-based architectures.
  • Knowledge of the Architectural, SW Development and SW Sustainment Practices
  • Familiar with with Vue, ColdFusion, Java, JavaScript, .NET (VB, C#), Python, Oracle/Postgres Spatial database integration.
  • Work complex problems and work with teams in the execution of solutions to those problems using rapid prototyping, agile development, or similar methodologies.
  • Perform software analysis, design, development and testing specific to data ingestion and exploitation application.
  • Provide status on development tasks to meet program/project goals. Familiar with Git/GitLab or other source code control tools.
  • Familiar with Amazon Web Services (S3 Buckets, EC2, Reserved Instances, etc.).
  • Familiar with team collaboration tools (Jira, Confluence, RocketChat).
  • Must possess an active Top Secret Security Clearance with ability to obtain SCI post hire.

Preferred Qualifications:

  • Familiar with some sort of deployment platform such as GitLab CI/CD or other proprietary deployment platforms.

BENEFITS

OST is an Equal Opportunity Employer and has been operating since 1996 providing support on various contracts with Government agencies. We offer a comprehensive benefits package that includes 3 weeks paid time off, 11 Federal Holidays, medical/dental coverage, STD, LTD, Life Insurance, AD&D, 401k with up to 4% match, and end-of-year profit sharing.

VEVRAA Federal Contractor.
We request Priority Protected Veteran & Disabled Referrals for all of our locations within the state.

PDN-9c42106c-f18a-46dc-814c-2f30c173e3a6

Open Systems Technologies Corporation is a leader in the government contracting marketplace, providing Enterprise Security and Cloud Computing solutions to support large organizations. Our capabilities include supplying federal government entities and private businesses with software development, scientific and engineering technical assistance, systems integration, and enterprise security. Since its founding in 1996, OST has been committed to delivering high-quality, best-in-class results that bring added value to our clients while investing in our employees’ futures by providing exciting projects to work on, and robust benefits to include technical training and certifications, relocation assistance and a 401K match with immediate vesting.

Open Systems Technologies is searching for an experienced Full Stack Software Developer to provide software maintenance and engineering support under the Foundation Sustainment Services contract.

Responsibilities:

This role is responsible for Corrective, Adaptive, Preventive, and Perfective maintenance of maritime systems software. This role uses best practices and patterns to perform design, development, and automated testing of software modules via DevSecOps in an Agile team.

  • This role performs software systems development, including the design, development, troubleshooting, and debugging of software programs for software enhancements and maintenance.
  • Participate in peer reviews and unit testing and must be adaptable to different responsibilities.
  • Duties include software requirements analysis and development of software products in a maintenance setting.
  • This role is responsible for identifying software and hardware dependencies and capacities.
  • Creating and maintaining documentation is part of this role.

Core Qualifications:

  • Requires a BS in Information Systems, Information Technology, Computer Science or closely related discipline and 6+ years of prior relevant experience or Masters with 2+ years of prior relevant experience; OR 8 years of experience in lieu of degree.
  • Proficient in software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment.
  • Proficient in AWS/Cloud technologies and experience with cloud-based architectures.
  • Knowledge of the Architectural, SW Development and SW Sustainment Practices
  • Familiar with with Vue, ColdFusion, Java, JavaScript, .NET (VB, C#), Python, Oracle/Postgres Spatial database integration.
  • Work complex problems and work with teams in the execution of solutions to those problems using rapid prototyping, agile development, or similar methodologies.
  • Perform software analysis, design, development and testing specific to data ingestion and exploitation application.
  • Provide status on development tasks to meet program/project goals. Familiar with Git/GitLab or other source code control tools.
  • Familiar with Amazon Web Services (S3 Buckets, EC2, Reserved Instances, etc.).
  • Familiar with team collaboration tools (Jira, Confluence, RocketChat).
  • Must possess an active Top Secret Security Clearance with ability to obtain SCI post hire.

Preferred Qualifications:

  • Familiar with some sort of deployment platform such as GitLab CI/CD or other proprietary deployment platforms.

BENEFITS

OST is an Equal Opportunity Employer and has been operating since 1996 providing support on various contracts with Government agencies. We offer a comprehensive benefits package that includes 3 weeks paid time off, 11 Federal Holidays, medical/dental coverage, STD, LTD, Life Insurance, AD&D, 401k with up to 4% match, and end-of-year profit sharing.

VEVRAA Federal Contractor.
We request Priority Protected Veteran & Disabled Referrals for all of our locations within the state.

PDN-9c42106c-f18a-46dc-814c-2f30c173e3a6

About Open Systems Technologies Corporation

Open System Technologies Corporation believes in the power of experience and expertise. That is why we are certified in a broad spectrum of capabilities to better serve our diverse clientele with flawless execution and exceptional client relationships.

At OST, we are proud to have assembled an experienced team of driven professionals who strive to keep us meeting new heights of performance. 

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Open Systems Technologies Corporation
Senior Full Stack Developer
Open Systems Technologies Corporation
Alexandria, VA
Mar 19, 2026
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