I will design, develop and optimize sql and nosql databases

5.0
5.0

Pakistan

I speak English

49 orders completed

Flutter Mobile App Developer iOS And Android Expert

Hi, I’m Umer Yasin — a Full-Stack Mobile App Developer with 6+ years of experience building high-performance Flutter apps for iOS and Android. I help startups and businesses turn ideas into scalable, ...

Level 1

Has met certain performance criteria and shows strong potential in the marketplace.

About this Gig

I specialize in designing structured, scalable, and high-performance database systems for startups, SaaS products, and enterprise applications.

If you need a properly designed, optimized, and secure database youre in the right place.


What I Can Do For You

Database schema design

ERD (Entity Relationship Diagram)

Database normalization

SQL query writing & optimization

Indexing & performance tuning

Data modeling

Database migration

Permissions & user role setup

Import/export & data management

Backend integration with APIs or web apps

Database Technologies I Work With

Relational Databases:

  • MySQL
  • PostgreSQL
  • MS SQL Server
  • MariaDB

NoSQL Databases:

  • MongoDB
  • Firebase
  • Redis

I also work with:

  • PL/SQL
  • Query optimization
  • Performance indexing
  • Database architecture planning

Backend & Integration (Optional)

If required, I can also integrate your database with:

  • PHP (Laravel)
  • Node.js (Express)
  • React / Next.js apps
  • REST APIs

Why Work With Me?

Clean & normalized schema design

Optimized for performance & scalability

Secure & properly structured

Database type:

Centralized database

Distributed database

Platform:

Firebase

MariaDB

MongoDB

MS SQL

MySQL

PostgreSQL

SQLite

Expertise:

Design

ERD

SQL

NoSQL

Performance

My Portfolio

Reviews

24 reviews for this Gig
5.0

(22)
(1)
(0)
(0)
(1)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • O
    image-docs

    ohidkhan

    GB

    United Kingdom

    5

    Needed a Custom Mobile App Development: which was beyond regular native app it was definetly very complex task , it was a tailored solutions for my specific platform. Very good at Persistent Problem Solving: Handling "critical" tasks that require staying on top of issues, best part was testing on real...

    $200-$400

    Price

    4 weeks

    Duration

    Helpful?
    Yes
    No
  • A

    angelaintegro

    CY

    Cyprus

    5

    Wrote all bugs of the app.

    $200-$400

    Price

    5 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • A

    adeelmazhar945

    PK

    Pakistan

    5

    I am working on a fairly detailed app project, and he has performed well, and I hope to work with him again to keep this project going. I recommend this developer for all cross-platform app design, especially for UI and backend development.

    $50-$100

    Price

    4 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • T
    image-docs

    the_real_rusein

    SA

    Saudi Arabia

    5

    Umer is the first freelancer i worked with on this website, and due to his politeness and professionalism, i really enjoyed working with him, he gets straight to the point. Just amazing

    $50-$100

    Price

    4 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • A
    image-docs

    allana2

    US

    United States

    5

    Umer and his team are extremely professional and sincere group of developers. They completed my work well in time and went out of the scope to make sure that the project is useful for us.

    $50-$100

    Price

    13 days

    Duration

    Helpful?
    Yes
    No
Reviews

24 reviews for this Gig
5.0

(22)
(1)
(0)
(0)
(1)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • O
    image-docs

    ohidkhan

    GB

    United Kingdom

    5

    Needed a Custom Mobile App Development: which was beyond regular native app it was definetly very complex task , it was a tailored solutions for my specific platform. Very good at Persistent Problem Solving: Handling "critical" tasks that require staying on top of issues, best part was testing on real...

    $200-$400

    Price

    4 weeks

    Duration

    Helpful?
    Yes
    No
  • A

    angelaintegro

    CY

    Cyprus

    5

    Wrote all bugs of the app.

    $200-$400

    Price

    5 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • A

    adeelmazhar945

    PK

    Pakistan

    5

    I am working on a fairly detailed app project, and he has performed well, and I hope to work with him again to keep this project going. I recommend this developer for all cross-platform app design, especially for UI and backend development.

    $50-$100

    Price

    4 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • T
    image-docs

    the_real_rusein

    SA

    Saudi Arabia

    5

    Umer is the first freelancer i worked with on this website, and due to his politeness and professionalism, i really enjoyed working with him, he gets straight to the point. Just amazing

    $50-$100

    Price

    4 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • A
    image-docs

    allana2

    US

    United States

    5

    Umer and his team are extremely professional and sincere group of developers. They completed my work well in time and went out of the scope to make sure that the project is useful for us.

    $50-$100

    Price

    13 days

    Duration

    Helpful?
    Yes
    No