The environment at Tellabs is considered positive by 67% of employees and regarded as having a “comfortably fast” work pace by 1 employees. Relative to its competitors, Calix, CIENA CORPORATION, and ADTRAN, INC., Tellabs' environment score ranks in 3rd place. This also puts them in the Top 20% of 2025 similar sized companies (1,001-5,000 Employees) on Comparably and Top 30% of 175 companies in Chicago.
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