Founded in 2010, E To E Transportation Infrastructure Limited is a company that is ISO 9001:2015 certified, dealing with various aspects of system integration and engineering services related to railways.Service Offerings: Signaling and Telecommunications (S&T) Services, Overhead Electrification (OHE), Track Projects and System Integration, and Private Sidings and Engineering Design and Research Centre (EDRC). It provides end-to-end rail engineering services that encompass design, procurement, installation, and testing. It serves the main line, urban transit, and private siding markets.The firm has experience in signaling and telecommunication systems, electrification work on tracks, and turnkey projects related to railway infrastructure. It has been doing this work for zonal railways, public sector units that come under the Indian Railways umbrella, corporates with private siding systems, as well as emerging companies for infrastructure developments in India and a few international destinations.Its key projects include the design and supply of CBTC systems for Hyderabad and Nagpur Metro, modernization of signaling and telecom systems for Vizag Steel Plant and NUPPL Power Plant, modernization of electronic interlocking systems for the Hosur-Salem section, extension of sidings to include connectivity to DFCC for the Gujarat Pipavav Port, and platform screen door systems for Mumbai Metro Line 3 and Phase 1 of the Chennai Metro.As of Sep 30, 2025, the order book of the firm consisted of 50 on-going contracts worth ₹40,110.37 lakhs.The total number of employees employed by the company, as on Nov 30, 2025, is 353,