Senior Web Systems Engineer

About APTNEXUS

Since our founding 2012, APTNEXUS has empowered federal agencies and commercial enterprises to navigate the complexities of the digital landscape. As a quality-driven small business, we specialize in the seamless delivery of IT modernization and elite cybersecurity solutions. We help our clients modernize and fortify their technology stacks — ensuring their most critical data and assets remain resilient, optimized, and secure in an evolving threat environment.

• Must have an active Secret security clearance.

The Senior Web Systems Engineer will serve as the technical lead for our customer’s digital presence. This hybrid role manages the end-to-end lifecycle of the agency’s internal collaboration environment (SharePoint/Power Platform) and its public-facing communications portal (Word Press). The ideal candidate is a "working architect" who can configure complex workflows with strict Azure/M365 permissions within our customer’s internal SharePoint online environment and can also deploy code to a FedRAMP-authorized Cloud.gov/Word

Press Internet environment. Your duties and responsibilities will include, but are not limited to:

• SharePoint & Power Platform (Internal Operations)
  • Lead the architecture and governance of the M365 environment, ensuring 508 compliance and data integrity.
  • Develop complex, low-code/pro-code solutions using Power Apps (Canvas/Model-driven) and Power Automate to digitize agency workflows.
  • Manage M365/Azure Active Directory permissions, implementing Least Privilege access models.
  • Maintain and customize SharePoint Online sites using the SharePoint Framework (SPFx) where out-of-the-box functionality is insufficient.
• Word Press & Cloud.gov (External Presence)
  • Oversee the development, security, and maintenance of the agency’s public website hosted on Word Press.
  • Manage deployment pipelines to Cloud.gov (or similar PaaS), ensuring high availability and adherence to federal security standards.
  • Implement custom themes and plugins while ensuring the site meets the U.S. Web Design System (USWDS) standards.
  • Coordinate with the Security team to ensure all public-facing assets pass regular vulnerability scans and penetration testing.
• Systems Architecture & Security
  • Serve as the Subject Matter Expert (SME) for cloud-based infrastructure, specifically Azure Government and FedRAMP authorized services.
  • Develop integrations between SharePoint and Word Press (e.g., automated document publishing) via APIs or middleware.
  • Maintain technical documentation and System Security Plans (SSPs) required for Authority to Operate (ATO) renewals.

• Bachelor's degree in Computer Science or IT-related disciplines.

• Minimum 10 years of professional experience in web development and systems administration, with at least 5 years specifically focused on Microsoft 365.
• Expert-level knowledge of SharePoint Online, including migration experience and SPFx development.
• Demonstrated success in building enterprise-grade Power Apps and complex Power Automate flows.
• Senior-level experience in PHP-based Word Press development, specifically within a containerized or PaaS environment.
• Proven experience managing applications on Cloud.gov, AWS Gov Cloud, or Azure Government.
• Deep understanding of Section 508 accessibility, NIST 800-53 security controls, and the Federal Information Security Modernization Act (FISMA).
• Languages:
  
  PHP, JavaScript/Type Script, C#, HTML5, CSS/SASS.
• Tools:
  Git, Azure Dev Ops, CLI (Cloud Foundry), VS Code.
• Identity: OAuth, SAML, Azure AD/Entra .