Senior Software Engineer

Unissant, Inc. delivers innovative capabilities to the agencies that keep our nation healthy and safe. We apply our domain expertise, data acumen, and technology know-how to achieve breakthrough results for our clients. Working collaboratively, we advance missions and careers through a focus on honesty, integrity, and dependability. We continuously look for talent, excited to join that effort. To learn more about our exciting organization, please visit www.unissant.com.

We are seeking a Senior Software Engineer to join our team and support our client, the Federal Emergency Management Agency (FEMA). This is a remote position.

The ideal candidate is a senior full-stack engineer who will provide technical leadership for application engineering, cloud integration, and platform operations across FEMA's AI portfolio. This individual will build, integrate, modernize, and sustain user-facing and back-end AI services that meet FEMA security, accessibility, performance, and operational requirements.

Essential Duties and Responsibilities:

• Lead the architecture, design, development, integration, testing, deployment, and sustainment of full-stack AI applications.

• Build user interfaces, APIs, middleware, data services, and back-end components for RAG/chatbot, document-processing, predictive-analytics, and enterprise-automation solutions.

• Apply PERN-stack engineering practices using PostgreSQL, Express.js, React, and Node.js; use Terraform for infrastructure-as-code where applicable.

• Establish and maintain CI/CD pipelines, source-control practices, automated testing, environment promotion, and observability across FEMA-approved AI platforms.

• Conduct system analysis, performance engineering, debugging, root-cause analysis, and technical-debt remediation.

• Ensure user-facing deliverables comply with Section 508; support accessibility test plans, test results, and Accessibility Conformance Reports as required.

• Develop and maintain architecture diagrams, build and operating plans, interface specifications, security artifacts, user guides, and technical documentation.

• Collaborate with AI engineers, data scientists, cybersecurity personnel, product owners, and program stakeholders to deliver secure, scalable, production-ready capabilities.

Work Experience and Job Skills:

• Five (5) to ten (10) years of experience in full-stack software engineering, application architecture, cloud engineering, DevSecOps, or related technical disciplines.

• Demonstrated experience with relational databases, modern web frameworks, Agile/Scrum delivery, software architecture, and system integration.

• Proficiency with PERN-stack technologies or comparable modern full-stack technologies; Terraform; CI/CD; git-based code management; and observability tools.

• Experience designing accessible user interfaces and testing web applications for Section 508 conformance.

• Experience building secure, maintainable, scalable applications and integrating cloud-hosted services, APIs, and enterprise data systems.

• Strong technical leadership, documentation, troubleshooting, performance-engineering, and collaboration skills.

Education:

• Bachelor's or Master's degree in Computer Science, Artificial Intelligence, Machine Learning, or a related technical field required.

Certificates, Licenses and Registrations:

• Cloud, DevSecOps, agile, accessibility, software architecture, or relevant technical certification preferred.

Communication Skills:

• Excellent verbal and written communication skills, with the ability to explain architecture, technical risks, accessibility considerations, and solution tradeoffs to technical and nontechnical audiences.

• Ability to write clear, concise content and manage sensitive information in a highly confidential manner.

Clearance Requirements:

• U.S. Citizenship is required.

• Favorably adjudicated FEMA Public Trust