With the increased demand for and utility of nano- and micro-satellites, the demand for responsive, low-cost access to space has also increased. To meet this demand, multiple private companies are pursuing the development of nano- and micro-launch vehicles (NMLV). However, NMLV builders lack suitable avionics platforms for both development and operational needs. Traditional launch vehicle avionics platforms exceed the SWaP requirements of an NMLV due to their use of redundant, aerospace grade components. To service the needs of NMLV builders, TUI proposes to develop the SWIFT-nanoLV avionics platform by leveraging its existing portfolio of SWIFT software-defined radios and other small satellite component technologies. Through the careful use of COTS components, modular design techniques, and software-defined architectures, the SWIFT-nanoLV avionics platform will not only meet the SWaP requirements of an NMLV, but will also help minimize the operating costs of NMLVs. After developing a concept design and testing brassboard prototypes in the Phase I effort, TUI will build and test a fully functional avionics platform in the Phase II effort.