🔗 Excalidraw Link :

https://excalidraw.com/#json=uBbmwYyThUNYvUBRB6BOP,Z2bX1bgLV6N9BxPhE23ASA

---

Functional Requirements :

• Employer should be able to add Job posts that have job description , budget and min requirements
• Freelancer should be able to see job posts and apply for the job and make a proposal
• Employer able to see Freelancer Proposal and select freelancer
• Freelancers should be able to edit and update his profile adding some details like ( Skills , Portfolio , hourly rate , etc )
• Employers should be able to add information like Company name , Posts , etc
• Employers and Freelancer must be able to chat with each other anytime
• Employers and Freelancer to make a contract and issued payment when it complete
• Freelancer and Employers should be able to search for ( jobs , Freelancer ) by keywords
• Employer and freelancer should be able to add review and rating

---

Non Functional Requirements :

• System should be able send notifications when Employer or freelancer receive a new massage
• System should be able to protect user data
• System Should be intuitive , efficient and easy for intended user to learn and operate
• System should be designed in a way that is easy to modify , correct and enhance in the future
• System should be scable to hold many user in the same time

---

Entity :

• Employer
• Freelancer
• Jobs
• Payments

---

API Design :

POST/jobs -> jobs

{
  description ,
  budget 
}

---

GET/jobs?limit=?&page=?

---

PATCH/Freelancer/Profile?profileID -> profileINFO

{
  skills ,
  protofolio,
  hourly rate 
}

---

PATCH/Employers/profile?profileID -> profileINFO

{
  company_name ,
  job_posts 
}

---

POST/payment?paymentID -> PaymentINFO

{
  payment_number,
  status
}

---

POST/review/freelancer -> rating

{
  rate,
  feedback
}

---

POST/review/Employer -> rating

{
  rate,
  feedback
}

---

POST/Contract?contractID -> contractINFO

{
  paymentINFO ,
  Date,
}

---

POST/proposal -> proposalINFO

{
  skills, 
  CV, 
  history
}

---

📊 Data Model

---

📈 Back of the envelope Estimation :

• Total User = 5 million
• Daily active User = 2 million
• Average jobs/freelance/daily = 2
• Total request = 2*2/5

---

🏛️ HLD

---

Deep Dives :

• will use a normal RestFUl API for All service expect chat will use WebsocketAPI
• Useing Third party for sending emails Notification to alert and chatting
• will use a payment getwat that will make payment operation more secuire and efficent
• job posts will be limited in one page for scaliabilty and maintalbilty
• editing account will be PATCH because PUT change all data and this edit is Partial so it will be faster
• every service have one page for make it easy for user to use and will not be one page with two service
• Review database , Chat Database will be only that never cach because it will not remove
• Mobile number will not user for dieffrent accoutns

---