Analysis engineers use mathematical models and computational tools to offer the essential data to design, develop, or research engineers to help them perform their function. They typically specialize in a technology area significant to the products or services being produced.
Systems engineers are responsible for ensuring that the components interface appropriately and work as a whole unit. They are also accountable for identifying the overall design requirements,which may involve dealing with customers or marketing personnel to accurately determine market needs. Systems engineers are responsible for meeting the overall design requirements, from a technical perspective.