Profile image of oobretenov
@oobretenov
Flag of Bulgaria Plovdiv, Bulgaria
Member since March, 2011
4 Recommendations

Ognyan Obretenov

Programmer with more than 20 years of experience in C,C++, C#, , SQL Database design Assembler PLC, CNC

$18 USD/hr
57 Reviews
5.7
  • 89%Jobs Completed
  • 99%On Budget
  • 99%On Time
  • 32%Repeat Hire Rate

Recent Reviews

  • image of studentbrave task important3 $120.00 USD

    “Great Work.”

    studentbrave Flag of Pakistan 19 hours ago.
    • C Programming
    • Microcontroller
    • PLC & SCADA
    • Hire me
    • Assembly
    • x86/x64 Assembler
  • image of Alexdki123 Short LC3 Project $40.00 CAD

    “Great freelancer!”

    Alexdki123 Flag of Canada last week.
    • Assembly
  • image of studentbrave new task 1 $150.00 USD

    “again good one”

    studentbrave Flag of Pakistan 1 month ago.
    • C Programming
    • Microcontroller
    • PLC & SCADA
    • Hire me
    • Assembly
    • x86/x64 Assembler
  • image of studentbrave Important Task $100.00 USD

    “Good Project”

    studentbrave Flag of Pakistan 2 months ago.
    • C Programming
    • Microcontroller
    • PLC & SCADA
    • Hire me
    • Assembly
    • x86/x64 Assembler
  • image of suddndaze Arduino and 4Dsystems Display $155.00 USD

    “Excellent Job. Oobretenov knows his stuff. Code was done on time. Will hire again.”

    suddndaze Flag of United States 2 months ago.
    • Microcontroller
    • Arduino
    • 4D
  • image of saaher12 hcs12 calculator $50.00 USD

    “Bad. Do not work with him”

    saaher12 Flag of United States 4 months ago.
    • Assembly

Experience

Manager

Feb 2012

I am manager of Software Development Company

Manager

May 1995 - Jan 2012 (16 years)

Lecturer

Oct 1990

I am lecturer in department of Computer System.

Education

Master

1985 - 1990 (5 years)

Certifications

TCP/IP Networking (1993)

Tcp/IP Networking

Publications

CANOPEN PROTOCOL for comunication between pc-based CNC and DIGITAL SERVO DRIVES

CANOPEN PROTOCOL for comunication between pc-based CNC and DIGITAL SERVO DRIVES

Badges

  • The Achiever

    Accept 50 projects.
  • Quick Pick

    Award your project within 24 hours of posting
  • The Giver

    Award your project to a Freelancer.
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • The Multi-tasker

    Complete 40 projects.
  • The Cap-tain!

    Reach the level 20 level cap!
  • Deck the Halls

    Participated in the 2013 twelve days of Freelancer Festivities
  • Mover and Shaker

    Create 50 Milestones.
  • Smooth Operator

    Complete 10 projects on time.
  • Perfectionist

    Receive 5-star ratings in 90% of your completed projects (minimum 10 projects).
  • Feedback Guru

    Receive 10 reviews
  • The Enforcer

    Reporting a project or contest that violates our terms of service.
  • Frequent Visitor

    Log in in every day for 1 month.
  • The Economist

    Complete 10 projects on budget.
  • The Regular

    Log in every day for 1 week.
  • Nine-to-Fiver

    Win a project and accept the offer.
  • The Critic

    Post 10 Reviews.
  • Millenium Proposal

    Bid on 1000 projects.
  • The Speculator

    Sponsor 1 bid.
  • The Investor

    Post a featured project.
  • Essential Credentials

    Update your account details 100%
  • Pro-Profile

    Complete your Profile 100%.
  • US English Qualified

    Pass the US English Exam (Level 1)
  • The Adventurer

    Complete your first project.
  • Smart Money

    Create 10 Milestones.
  • The Spartan

    Bid on 300 projects.
  • All Star

    Receive a 5-star rating for a project.
  • Spread the News

    Invite 10 friends to join Freelancer.com
  • The Biller

    Create an hourly invoice.
  • Fast Responder

    Bid within 2 minutes of a project being listed.
  • The Collector

    Reach a balance of 5,000 credits.
  • The Verified

    Verify your payment method
  • The Prospector

    Post your first project.
  • The Perfectionist

    Edited a bid.
  • Grand Tourer

    Visit all recommended features that Freelancer.com offers
  • The Seeker

    Bid on 20 projects.
  • Deck the Halls

    Participated in the 2013 twelve days of Freelancer Festivities
  • Mover and Shaker

    Create 50 Milestones.
  • Millenium Proposal

    Bid on 1000 projects.
  • The Collector

    Reach a balance of 5,000 credits.
  • The Achiever

    Accept 50 projects.
  • Simply the Best

    Complete 5 or more projects, with a 95% completion rate.
  • The Multi-tasker

    Complete 40 projects.
  • The Cap-tain!

    Reach the level 20 level cap!
  • Smooth Operator

    Complete 10 projects on time.
  • Perfectionist

    Receive 5-star ratings in 90% of your completed projects (minimum 10 projects).
  • Frequent Visitor

    Log in in every day for 1 month.
  • The Economist

    Complete 10 projects on budget.
  • Smart Money

    Create 10 Milestones.
  • The Spartan

    Bid on 300 projects.
  • All Star

    Receive a 5-star rating for a project.
  • Grand Tourer

    Visit all recommended features that Freelancer.com offers
  • Quick Pick

    Award your project within 24 hours of posting
  • The Giver

    Award your project to a Freelancer.
  • Feedback Guru

    Receive 10 reviews
  • The Enforcer

    Reporting a project or contest that violates our terms of service.
  • The Regular

    Log in every day for 1 week.
  • Nine-to-Fiver

    Win a project and accept the offer.
  • The Critic

    Post 10 Reviews.
  • The Speculator

    Sponsor 1 bid.
  • The Investor

    Post a featured project.
  • Essential Credentials

    Update your account details 100%
  • Pro-Profile

    Complete your Profile 100%.
  • US English Qualified

    Pass the US English Exam (Level 1)
  • The Adventurer

    Complete your first project.
  • Spread the News

    Invite 10 friends to join Freelancer.com
  • The Biller

    Create an hourly invoice.
  • Fast Responder

    Bid within 2 minutes of a project being listed.
  • The Verified

    Verify your payment method
  • The Prospector

    Post your first project.
  • The Perfectionist

    Edited a bid.
  • The Seeker

    Bid on 20 projects.

Exams

  • Freelancer Orientation
    85%
  • Numeracy 1
    98%
  • Visual Basic
    83%
  • ADO.NET 1
    83%
  • SQL Level 2
    80%
  • MySQL Level 1
    80%
  • VB .Net Level 1
    75%
  • C 3
    88%
  • C++ Level 1
    78%
  • Data Structures
    58%
  • C# 1
    75%
  • Linux Kernel 1
    65%
  • US English Level 1
    85%

My Top Skills

  • Assembly 27
  • x86/x64 Assembler 25
  • C Programming 17
  • Microcontroller 13
  • C++ Programming 12
  • PLC & SCADA 10
  • Arduino 4
  • C# Programming 3
  • Visual Basic 2
  • Linux 1
  • Microsoft Access 1
  • Database Programming 1
  • .NET 0
  • Windows Desktop 0
  • Android 0
  • SQL 0
  • Algorithm 0
  • Web Scraping 0
  • Visual Basic for Apps 0
  • Software Development 0

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