Here are links to the careers pages of freight rail carriers on properties represented by SMART. (All locations and some subsidiary properties may or may not be represented by SMART).
- Alaska Railroad
- Albany Port Railroad Corporation (APRC)
- Appalachian & Ohio Railroad (A&O)
- Belt Railway Company of Chicago
- Bombardier Transportation (Alstom)
- Cedar Rapids & Iowa City Railway (CRANDIC)
- Central Maine & Quebec Railway
- Conrail
- Florida East Coast (FEC)
- Genesee & Wyoming – represented subsidiaries
- Bayline Railroad (BAYL)
- Buffalo & Pittsburgh Railway (BPRR)
- California Northern Railroad (CFNR)
- Central Railroad of Indiana (CIND)
- Dallas Garland & Northeastern (DGNO)
- Illinois & Midland Railroad (IMRR)
- Louisiana & Delta Railroad (LDRR)
- Marquette Railroad (MQT)
- Missouri & Northern Arkansas (MNA)
- New England Central Railroad (NECR)
- Providence & Worcester (PW)
- Puget Sound & Pacific Railroad (PSAP)
- Rapid City, Pierre & Eastern Railroad (RCPE)
- Rochester & Southern Railroad (RSR)
- San Joaquin Valley Railroad
- SEARS
- South Buffalo Railway
- South Carolina Central Railroad (SCRF)
- Toledo, Peoria & Western Railway (TPW)
- Tazewell & Peoria Railroad (TZPR)
- York Railway
- Illinois Central Railroad Company
- Iowa Interstate Railroad (IAIS)
- Iowa Northern Railway Company
- KEOLIS
- Mississippi Export Railroad (MSE)
- Morristown & Erie Railway
- Nebraska Central Railroad Company (NCRC)
- New Orleans Public Belt Railroad (NOPB)
- OmniTRAX – represented subsidiaries
- Alabama & Tennessee River Railway (ATN)
- Brownsville & Rio Grande Railway (BRG)
- Chicago Rail Link LLC
- Fulton County Railway, LLC (FCR)
- Georgia & Florida Railway, LLC (GFRR)
- Nebraska, Kansas & Colorado Railway LLC (NKCR)
- Stockton Terminal & Eastern Railroad (STE)
- Paducah & Louisville Railway (PAL)
- Pan Am Railways
- Patriot Rail – represented subsidiaries
- Columbia & Cowlitz Railway
- DeQueen & Eastern Railroad (DQE)
- Louisiana and Northwest Railroad (LNW)
- Port Terminal Railroad Association (PTRA)
- Red River Valley & Western Railroad (RRVW)
- San Luis & Rio Grande Railroad (SLRG)
- South Carolina Public Railways/Palmetto Railways
- Springfield Terminal Railway
- Tacoma Municipal Belt Line (TMBL)
- Terminal Railroad Association of St. Louis (TRRA)
- Texas City Terminal Railway Company (TCTRR)
- TRANSITAMERICA (TASI)
- Transtar – represented subsidiaries
- Delray Connecting Railroad Company (DCRR)
- Gary Railway Co. (GRW)
- Lake Terminal Railroad Co.
- Union Railroad Company
- Trona Railroad
- Watco – represented subsidiaries
- Birmingham Terminal Railway (BHRR)
- Grand Elk Railroad (GDLK)
- Wichita Terminal Association
- Western Railroad Company (WRRC)