The contract scope includes designing the onshore gas treatment plant and associated facilities.
The firm will also generate a robust capital cost estimate based on vendor quotations for high value and long lead items to support the final investment decision, which is scheduled during the second half of 2016.
Jacobs petroleum and chemicals president Gary Mandel said: "We are pleased to be involved at an early and critical stage of this challenging natural gas project.
"The Pre-FID study phase is an important step towards achieving a high level of certainty for the FID approval in second half of 2016. We are excited about the opportunity to leverage our global capabilities through a workshare arrangement to complete this phase efficiently and effectively."
Being undertaken by a joint venture between CalEnergy Resources Poland and Lotos Petrobaltic, the project involves development of the B4 and B6 gas condensate fields in the Polish sector of the Exclusive Economic Zone (EEZ) of the Southern Baltic Sea.
The CalEnergy-operated project is estimated to have approximately 149 Bcf of natural gas.
In January 2016, Subsea Engineering Associates was awarded a contract to provide detailed design, procurement and construction management for the Baltic Gas project