Conversation so far:
How did Ross Brawn's career get started?
His career in motorsport began in 1976 when he joined March Engineering in the town of Bicester as a milling machine operator.
How did he do there?
Soon afterwards he joined their Formula 3 racing team as a mechanic.
How long did he work as a mechanic?
Brawn was hired by Sir Frank Williams in 1978 as a machinist for the newly formed Williams team.
What did he do there?
He quickly moved up through the ranks, working in the R&D department with Frank Dernie and as an aerodynamicist in the team's wind tunnel.
Did he switch carers again after that?
Brawn joined the Haas Lola team in 1985 and was part of Neil Oatley's design team at FORCE.

Question: What did he do there?
Self-contained rewrite: What did Ross Brawn do for the Haas Lola team in 1985 and for Neil Oatley's design team at FORCE?