Senior System Engineer

Systems Engineer Level 3 - Cloud Migration / Application Modernization Support

SITEC Consulting is seeking an experienced Systems Engineer Level 3 to support cloud migration, application modernization, technical roadmap development, and systems engineering activities in a mission‑focused environment. This role is ideal for a senior systems engineer with software development expertise, cloud architecture exposure, and the ability to evaluate current applications, document modernization plans, and support future‑state system design.

The selected candidate will support engineering efforts focused on assessing existing applications, identifying technical debt, supporting cloud migration planning, developing strategic product roadmaps, and helping guide the redevelopment or modernization of mission applications. This position requires strong technical communication skills, the ability to work with customers and engineering teams, and experience translating operational needs into actionable system, architecture, and implementation plans.

• Perform systems engineering activities supporting the design, development, integration, modernization, and sustainment of mission applications, systems, and technical capabilities.
• Support cloud migration efforts by evaluating current applications, identifying migration considerations, documenting dependencies, and assisting with future‑state architecture planning.
• Provide software development expertise to support application redevelopment, modernization, enhancement, and technical debt reduction.
• Evaluate existing applications, systems, and workflows to determine current‑state limitations, modernization needs, future requirements, and recommended technical approaches.
• Support cloud architecture efforts by helping define target‑state environments, system interfaces, data flows, dependencies, risks, and implementation considerations.
• Assist in the development of strategic roadmaps for products, applications, systems, and technical capabilities.
• Support documentation of engineering plans, migration plans, modernization strategies, system designs, technical risks, dependencies, and recommended courses of action.
• Analyze user requirements, system requirements, and operational needs to develop system‑level concepts, architecture recommendations, and technical implementation plans.
• Support requirements analysis, functional analysis, system design, integration planning, test planning, and technical documentation across the system lifecycle.
• Work with Government customers, mission users, software developers, architects, and engineering teams to define technical objectives and support implementation planning.
• Identify and document technical debt, legacy system constraints, application risks, modernization gaps, and opportunities for improved performance, scalability, maintainability, and security.
• Support the development, review, and refinement of system engineering documentation, architecture artifacts, schedules, technical roadmaps, and program planning materials.
• Assist with evaluating alternatives for application modernization, cloud migration, system integration, and long‑term sustainment.
• Provide technical recommendations to improve system functionality, architecture, interoperability, reliability, and lifecycle supportability.
• Support coordination across engineering, software development, cloud, cybersecurity, and program teams to ensure modernization activities align with mission and technical objectives.

• Twenty years of experience as a Systems Engineer on programs and contracts of similar scope, type, and complexity.
• Bachelor's degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related discipline from an accredited college or university.
• Experience supporting systems engineering activities across the system lifecycle, including requirements analysis, design, development, integration, testing, documentation, and sustainment.
• Experience supporting software development, application modernization, cloud migration, system architecture, or technical roadmap efforts.
• Ability…