Remote Senior Software Developer III - Secure Apps & Cloud

Attainx Inc.; Arlington (VA); Remote; USD 130,000 - 145,000; Full time

Job summary

AttainX, Inc. is seeking a Software Developer III to support the DHS, CISA OBP program. This mid-level role develops, tests, and maintains secure software applications with a focus on reliability and accessible interfaces.

You will collaborate with technical teams to modernize applications and ensure secure, compliant delivery. The role requires 4–7 years of related experience, a BS in a related field, and strong knowledge of APIs, cloud platforms, and secure coding.

Qualifications

• Bachelor’s degree in computer science, information systems, software engineering, or a related field.
• 4-7 years of related experience in software development, application integration, or a comparable technical role.
• Experience developing, debugging, and maintaining applications using modern programming languages and frameworks.
• Experience developing web applications, reusable components, and accessible user interfaces.
• Working knowledge of RESTful APIs, service integration, and authentication approaches such as OAuth 2.0 or SAML.
• Experience with relational databases, SQL, and application data validation and processing.
• Familiarity with cloud application development, application migration, and scalable software design.
• Experience with Git version control, code reviews, agile development, and continuous integration and delivery practices.
• Ability to write automated tests, investigate defects, and document test results and technical changes.
• Working knowledge of secure coding, vulnerability remediation, access controls, and protection of sensitive information.
• Knowledge of Section 508 accessibility requirements and experience applying accessibility practices to software interfaces.
• Strong analytical, communication, and documentation skills; ability to work independently on assigned development work and collaborate with senior technical staff.
• Experience supporting Federal Government applications, cloud services, data pipelines, or approved AI/ML integrations is preferred.
• Ability to meet DHS/CISA background investigation, EOD/fitness, and system access requirements and maintain required access throughout employment.

Responsibilities

• Develop, enhance, and maintain secure software applications and reusable components that meet approved business and technical requirements.
• Translate user needs into application features, technical designs, and implementation approaches with guidance from senior developers and architects.
• Build intuitive user interfaces that follow approved branding, plain language, and accessibility standards.
• Develop and maintain APIs and service integrations; implement approved authentication, authorization, and data exchange controls.
• Develop database queries and data processing components; validate data quality and integrity across application workflows.
• Support application refactoring and cloud migration while preserving functionality, data integrity, and service continuity.
• Apply secure coding practices, participate in code reviews, and resolve identified software vulnerabilities and defects.
• Create and execute unit, integration, and regression tests; document results and support software acceptance and release readiness.
• Participate in agile planning and development activities; communicate progress, dependencies, and technical issues to the team.
• Use approved version control and deployment practices; contribute to automated build, test, and release pipelines.
• Incorporate Section 508 accessibility into application changes and releases and help verify accessibility before deployment.
• Troubleshoot application errors and performance issues; implement approved fixes, updates, and maintainability improvements.
• Maintain software documentation, configuration information, and implementation notes to support sustainment and knowledge transfer.
• Collaborate with security, operations, testing, and business stakeholders to protect sensitive information and support reliable application delivery.

Skills

RESTful APIs

OAuth 2.0 / SAML

Cloud development

Git version control

CI/CD pipelines

Secure coding

Unit testing

Accessibility

Agile development

SQL databases

Education

Bachelor’s degree in computer science, information systems, software engineering, or a related field

Tools

Git

CI/CD tools

Job description

AttainX, Inc. is seeking a Software Developer III to support the DHS, CISA OBP program. This mid-level role develops, tests, and maintains secure software applications with a focus on reliability and accessible interfaces.

You will collaborate with technical teams to modernize applications and ensure secure, compliant delivery. The role requires 4–7 years of related experience, a BS in a related field, and strong knowledge of APIs, cloud platforms, and secure coding.