Stefan Ludzhev, Developer in Sofia, Bulgaria
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Stefan Ludzhev

Verified Expert  in Engineering

Software Developer

Location
Sofia, Bulgaria
Toptal Member Since
January 18, 2019

As a software developer, Stefan is aware of the importance of applying the best and latest practices in the field. He is focused and result oriented, enjoys solving challenging problems, and finding the best solution whenever possible. He is the type of person who focuses on quality over quantity and addresses every task with the exact amount of diligence and consideration needed.

C#GitFlowGitWindowsJSONExpress.jsNode.jsHTML5Agile WorkflowMongoDBJest.NET CoreRedisSQLCSSDynamic ProgrammingPhaser

Portfolio

Vortex VV
JSON, Dynamic Programming, Jest, SCSS, Concurrent Programming, Handlebars, SVG...
InterConsult Bulgaria
SCSS, TFS, PrimeNG, .NET, Visual Studio, Windows, HTML5, Agile Workflow, SQL...
Freelance
JSON, Dynamic Programming, CSS Grid, SCSS, Concurrent Programming, Handlebars...

Experience

Git - 5 yearsC# - 5 yearsExpress.js - 4 yearsNode.js - 4 yearsJavaScript - 4 yearsAngular - 3 yearsMongoDB - 3 years.NET Core - 2 years

Availability

Part-time

Preferred Environment

Linux, GitFlow, JavaScript, C#, Git, Visual Studio Code (VS Code)

The most amazing...

...project I've ever worked on was an application with image recognition using TensorFlow.

Work Experience

Back-end Developer

2018 - 2019
Vortex VV
  • Optimized database queries by creating partial and compound indexes.
  • Orchestrated the AI model execution by creating a decision tree.
  • Automated the conversion of AI models to Node.js-friendly ones.
  • Automated the deployment of back-end microservices by creating Terraform resources.
  • Applied a serverless architecture by creating Google Cloud Functions.
Technologies: JSON, Dynamic Programming, Jest, SCSS, Concurrent Programming, Handlebars, SVG, Graphs, .NET, Visual Studio, Express.js, Agile Workflow, MongoDB, Redis, SQL, Google Cloud Platform (GCP), Jira, Linux, Decision Trees, Git, GitFlow, JavaScript, .NET Core, Node.js

Full-stack Developer

2017 - 2018
InterConsult Bulgaria
  • Created the database architecture.
  • Enabled globalization and localization.
  • Synchronized data with a cloud API.
  • Optimized database queries.
  • Applied a microservice architecture.
Technologies: SCSS, TFS, PrimeNG, .NET, Visual Studio, Windows, HTML5, Agile Workflow, SQL, CSS, Azure, ASP.NET Razor, JavaScript, C#, Microsoft SQL Server, Entity Framework, Angular, .NET Core

Web Developer

2013 - 2017
Freelance
  • Developed an administration tool for a type of screen-sharing software.
  • Constructed an internal CMS from scratch.
  • Built a single-page application with vanilla JavaScript and jQuery.
  • Developed a national tourist application with server side rendering.
  • Created several JavaScript browser games with Canvas, SVG, and Phaser.io.
Technologies: JSON, Dynamic Programming, CSS Grid, SCSS, Concurrent Programming, Handlebars, Phaser.io, Canvas, Graphs, Visual Studio, SQLite, PostgreSQL, Windows, Express.js, HTML5, Redis, Pug, CSS, Jira, ASP.NET Razor, Git, GitFlow, C#, jQuery, MongoDB, JavaScript, Entity Framework, Microsoft SQL Server, Angular, .NET, Node.js

GS1 Product Catalog

Technologies: .NET Core, Angular 4, PrimeNG, SQL Server, Entity Framework

GS1 Administration

Technologies: .NET Core, Angular 6, PrimeNG, Node.js
2004 - 2009

Master's Degree in Landscape Architecture

University of Forestry, Sofia - Sofia, Bulgaria

1999 - 2004

High School Diploma in Maths and Informatics

Sofia Math School - Sofia, Bulgaria

SEPTEMBER 2018 - SEPTEMBER 2020

Codility Golden Award for the Grand Challenge

Codility

SEPTEMBER 2018 - SEPTEMBER 2020

Codility Golden Award for the Future Mobility Challenge

Codility

AUGUST 2018 - JULY 2020

Codility Golden Award for the Germanium 2018 Challenge

Codility

AUGUST 2018 - AUGUST 2020

Codility Golden Award for the Selenium 2018 Challenge

Codility

AUGUST 2018 - AUGUST 2020

Codility Golden Award for the Digital Gold Challenge

Codility

JUNE 2018 - JUNE 2020

Codility Golden Award for the Zinc 2018 Challenge

Codility

MAY 2018 - MAY 2020

Codility Golden Award for the Cuprum 2018 Challenge

Codility

MAY 2018 - PRESENT

Codility Golden Award for the Cutting Complexity Challenge

Codility

Libraries/APIs

Node.js, Entity Framework, jQuery, Handlebars, PrimeNG

Tools

Git, Visual Studio, Jira, TFS, Canvas

Frameworks

Jest, .NET Core, Express.js, Angular, .NET, Phaser.io

Languages

C#, JavaScript, HTML5, SQL, CSS, SCSS, ASP.NET Razor, Pug

Paradigms

Dynamic Programming, Agile Workflow, Concurrent Programming

Platforms

Windows, Visual Studio Code (VS Code), Linux, Google Cloud Platform (GCP), Azure

Storage

JSON, Redis, MongoDB, Microsoft SQL Server, PostgreSQL, SQLite

Other

GitFlow, CSS Grid, Graphs, Decision Trees, SVG

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