Software Engineer II

ATTAINX INC is hiring a Software Engineer II to support the Department of Homeland Security (DHS), Cybersecurity and Infrastructure Security Agency (CISA), and the Infrastructure and Risk Modeling Environment (IRME). In this hybrid role in Arlington, VA, you will provide software engineering analysis and technical planning that supports modernization and sustainment, with a focus on system behavior, interfaces, dependencies, reliability, and performance.

The work supports government governance and decision-making through engineering assessments, systems documentation, and technical briefings, while also contributing to knowledge continuity through maintained repositories and transition materials.

Responsibilities

• Assess software components, interfaces, cloud dependencies, data flows, and analytical workflows as part of a comprehensive system assessment.
• Analyze technical debt, performance bottlenecks, security vulnerabilities, and reliability concerns; document engineering risks and recommendations.
• Participate in stakeholder interviews and working sessions to define functional and nonfunctional software requirements and candidate capabilities.
• Document current workflows, integration constraints, operational pain points, and engineering modernization goals.
• Evaluate engineering alternatives, including reuse of existing DHS or interagency analytical, geospatial, and data capabilities.
• Provide effort, resource, cost-benefit, and risk analysis inputs to the modernization roadmap and project plans.
• Define measurable technical success criteria and requirements traceability to support milestone reviews and later capability validation.
• Support project methodology selection, iterative planning, dependency tracking, and technical performance monitoring.
• Prepare engineering assessments, systems documentation, briefings, and demonstrations that support Government governance and decision-making.
• Maintain engineering knowledge repositories, decisions, process descriptions, and technical transition materials to support continuity.

Requirements

• A bachelor’s degree in computer science, software engineering, engineering, or a related field is preferred; equivalent education, training, and relevant experience will be considered.
• Minimum of 3-5 years of related experience in software engineering, including application design and development, API integration, cloud-based solutions, system integration, and software testing.
• Experience in software engineering, system integration, and lifecycle delivery.
• Experience designing modular software, APIs, microservices, and cloud-based applications.
• Proficiency with programming languages and engineering practices such as version control, code review, and automated builds.
• Experience defining test criteria and performing integration, performance, regression, and operational validation testing.
• Experience analyzing dependencies, reliability, security risks, and performance bottlenecks.
• Familiarity with identity protocols, data exchange, enterprise monitoring, and secure development.
• Federal security and accessibility experience, analytical modeling, simulation, and geospatial applications are preferred.
• AWS Certified Developer – Associate, AWS Certified DevOps Engineer – Professional, or an equivalent certification relevant to the supported technology environment is highly preferred.
• Must be a US Citizen able to obtain and maintain a DHS CISA IRME Public Trust clearance.
• Tier 4 background investigation required; must obtain and maintain a favorable DHS/CISA IRME suitability/fitness determination/public trust and required facility and system access.
• U.S. citizenship required for DHS IT system access, and authorization to work in the United States is required.

Technologies

• AWS
• APIs
• microservices
• cloud-based applications

Benefits

• Paid vacation
• Medical, dental, and vision insurance
• Matching 401(k) plan
• Tuition/training reimbursement
• Long- and short-term disability coverage

Location and Work Details

• Location: Arlington, VA (hybrid). Work is performed at DHS CISA offices and authorized contractor facilities: 4200 Wilson Boulevard and 4601 N. Fairfax Drive, Arlington, VA 22203.
• Telework: Telework only with Government approval; situational and may be revoked.
• Schedule: Monday through Friday.
• Work hours: 8:00 a.m. to 4:00 p.m. Eastern Time, Monday through Friday, excluding Federal holidays; core availability from 9:00 a.m. to 3:00 p.m.
• After-hours: Occasional work outside normal hours, including weekends or holidays, may be required for crisis response or critical IT issues.

Physical Demands and Accommodations

This position primarily involves computer-based work, reviewing technical materials, and communicating with team members and stakeholders. Essential functions may be performed with or without reasonable accommodation. Applicants and employees who need a reasonable accommodation for the application process or to perform essential job functions may contact Human Resources.