Model the System
Step 1:

Employee
* SSN
Username
Lname
Fname
streetadd1
streetadd2
zipcode
phone1
phone2

Employer
*telephone_num
comp_name
address
location
contact_person
FK job
website

jobs
*job
job_title
job_desc
salary
terms (full time, partime, contract..)
duration (how many months, days..)
category
requirements (degree, skills, certifications)

Step 2:

Employee
* SSN
Username
Lname
Fname
streetadd1
streetadd2
password
FK zipcode
phone1
phone2

Zips
* zipcode
City
State

EmpSkills
*FK SSN (from the employee table)
*FK Skill_id (from the skills table)
skill_level

Skills
* Skill_id
category
skill_name
skill_description

Employer
*telephone_num
comp_name
address
location
contact_person
FK job
website

jobs
*job
job_title
job_desc
salary
terms (full time, partime, contract..)
duration (how many months, days..)
category
requirements (degree, skills, certifications)

* denotes Primary Key

Other examples of models:
Ecommerce example