Contractor

[kon-trak-ter, kuh n-trak-ter] /ˈkɒn træk tər, kənˈtræk tər/

noun
1.
a person who to furnish supplies or perform work at a certain price or rate.
2.
something that , especially a muscle.
3.
Bridge. the player or team who makes the final bid.
/ˈkɒntræktə; kənˈtræk-/
noun
1.
a person or firm that contracts to supply materials or labour, esp for building
2.
something that contracts, esp a muscle
3.
(law) a person who is a party to a contract
4.
the declarer in bridge
n.

1540s, “one who enters into a contract,” from Late Latin contractor, agent noun from past participle stem of Latin contrahere (see contract (n.)); specifically of “one who enters into a contract to provide work, services, or goods” from 1724.

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Contract programmer
job A programmer who works on a fixed-length/temporary contract, and is often specialised in writing certain types of code. A contract programmer may be independent or they may work in a supplier’s professional services department, providing consultancy and programming services for the supplier’s products. (2004-03-09)
Contractualism
[kon-trak-tair-ee-uh-niz-uh m] /ˌkɒn trækˈtɛər i əˌnɪz əm/ noun 1. any of various theories that justify moral principles and political choices because they depend on a social contract involving certain ideal conditions, as lack of ignorance or uncertainty. 2. a general ethical theory that individuals make the right choices under a hypothetical social contract.

Contractual
[kuh n-trak-choo-uh l] /kənˈtræk tʃu əl/ adjective 1. of, relating to, or secured by a . /kənˈtræktjʊəl/ adjective 1. of the nature of or assured by a contract adj. 1827, from Latin contractus (see contract (n.)) + -al (1).
Contractually
[kuh n-trak-choo-uh l] /kənˈtræk tʃu əl/ adjective 1. of, relating to, or secured by a . /kənˈtræktjʊəl/ adjective 1. of the nature of or assured by a contract adj. 1827, from Latin contractus (see contract (n.)) + -al (1).