Stefan S.

Stefan S.

Bucharest, Romania

Full Stack Developer

12 years of exp.


Profile Summary

I am a Senior Fullstack (.NET, Angular) Software Engineer / Contractor / Freelancer with 11+ years of experience.

Primary Skills

C# | 12 yrsJavaScript | 8 yrsTypeScript | 6 yrsASP.NET | 8 yrsSQL | 10 yrs.NET Core | 7 yrsReact | 3 yrs Kubernetes | 6 yrs

Work Experience

DevFactory

Senior Typescript Cloud Engineer
  • Feb, 2020 - Apr, 2022
  • Remote
  • Reduced workflow development cycles by over 20% by designing a state-of-the-art event-driven exception handling mechanism by fanningin error events into a work-queues and routing them to their appropriate destinations.
  • Assured 24/7 availability and reliability by designing and deploying continuous monitoring and dashboards/alerts driven by key performance indicators and root cause analysis.
  • • Improved observability by over 30% by deploying industry proven log and metric collection via Prometheus/Graphana

Skills

C#TypeScriptPythonAWSAmazon Elastic Kubernetes ServiceAWS Cloud Development Kit AWS LambdaAngularGoMicroservicesDockerPrometheusTDDAWS SQS KubernetesFluentD

Industries

Cloudtech and DevopsIT ServicesSoftware

Enable

Senior Full Stack Engineer(C#/Typescript)
  • Sep, 2019 - Present
  • Remote
  • Reduced development cycles by 20% by adding a dependency tracking mechanism which ensured correct validation of user permitted actions .
  • Improved compliancy with industry standards by designing and implementing a low level auditing system .
  • Reduced maintenance costs by implementing a template driven code generator engine which allowed better separation of concerns.
  • Improved ui performance by implementing caching via global state.

Skills

C#TypeScriptASP.NETReact

Industries

IT ServicesLife SciencesSoftware

Devfactory

Senior Typescript Engineer
  • Feb, 2019 - Feb, 2020
  • Remote
  • Reduced onboarding times by more than 90% and increased customer retention rate by 30% by fully automating the onboarding process by closely analyzing configuration and dependencies and implementing an infrastructure as code solution.

Skills

JavaScriptTypeScriptAmazon Elastic Kubernetes ServiceAWS Cloud Development Kit AngularDockerAnsibleHelm ChartsGitOps

Industries

IT ServicesSoftware

Aurea

Senior .NET Engineer
  • Jan, 2018 - Feb, 2024
  • Remote
  • Reduced development and maintenance costs by more than 60% by implementing a mobile platform independent UI solution with TDD approach while keeping the OS specific look and feel, by refactoring the underlying codebase using the standard MVC approach.

Skills

C#.NET CoreWindows Presentation Foundation (WPF)XamarinTDDNUnit

Industries

IT ServicesSoftware

Cegeka

Senior Full Stack Engineer
  • Apr, 2017 - Jan, 2018
  • Romania
  • Greatly improved user experience by adding critical performance optimizations of up to 2x reduced report generation times and by redesigning parts of the code base in line with proven industry standards.

Skills

JavaScriptASP.NETASP.NET MVCLINQCSSHTMLTeamCityOctopus

Industries

IT ServicesSoftware

Acrelec

Senior .NET/Angular Engineer
  • Sep, 2013 - Apr, 2017
  • Romania
  • Reduced system-impairing defects by over 70% by re-designing the content distribution engine and adopting proven industry protocols and patterns for auto-updating and media transfers
  • Reduced maintenance related costs by over 40% by delivering a a highly intuitive user interface which allowed end-users to customize the system to their specific needs and by analyzing the functionality gaps and designing and implementing a web based user interface.

Skills

C#TypeScriptASP.NETMongoDbNoSQLWindows Presentation Foundation (WPF)LINQAngularJSAOP

Industries

Software

Misys Banking

C++/C# Software Engineer
  • Aug, 2011 - Sep, 2013
  • Romania
  • Successfully delivered a reliable reporting interface and report generation engine, which allowed data aggregation based on various filtering and formatting criteria.
  • Delivered business critical fixes which reduced losses from incorrect cashflow calculations.

Skills

C#OracleASP.NET MVCC++Windows FormsCORBA

Industries

IT ServicesSoftware

Education

Bachelor's degree
  • Computer Science
  • Universitatea Politehnica Bucuresti, Romania
  • 2011
Bachelor's degree
  • Psychology
  • Hyperion, Romania
  • 2020

Certifications

Service-Oriented Architecture
  • Coursera
  • 2018
Design Patterns
  • Coursera
  • 2018
Algorithms: Design and Analysis
  • Coursera
  • 2013

All Skills

  • Languages

    • C# | 12 yrs
    • JavaScript | 8 yrs
    • TypeScript | 6 yrs
    • Python | 1 yr
    • Bash | 5 yrs
    • C++ | 3 yrs
    • Go | 1 yr
  • Frameworks

    • ASP.NET | 8 yrs
    • .NET | 7 yrs
    • .NET Core | 7 yrs
    • Angular | 3 yrs
    • ASP.NET MVC | 7 yrs
    • Entity Framework | 10 yrs
    • React | 3 yrs
    • Windows Presentation Foundation (WPF) | 4 yrs
    • Xamarin | 2 yrs
    • AngularJS | 1 yr
    • Windows Forms | 3 yrs
  • Cloud

    • AWS | 3 yrs
    • Amazon Elastic Kubernetes Service | 2 yrs
    • Amazon Web Services (AWS) | 2 yrs
    • AWS Cloud Development Kit | 2 yrs
    • AWS CloudFormation | 2 yrs
    • AWS Lambda | 2 yrs
    • AWS SQS | 3 yrs
    • Kubernetes | 6 yrs
  • Databases

    • MongoDb | 5 yrs
    • Microsoft SQL Server | 10 yrs
    • MySQL | 10 yrs
    • NoSQL | 5 yrs
    • Oracle | 3 yrs
    • SQL | 10 yrs
  • Libraries

    • LINQ | 10 yrs
  • Paradigms

    • Design Patterns | 10 yrs
    • Microservices | 6 yrs
    • Object-oriented Programming (OOP) | 10 yrs
    • SOLID Principles | 10 yrs
    • TDD | 3 yrs
    • GitOps | 3 yrs
    • AOP | 3 yrs
  • Platforms

    • Linux | 8 yrs
  • Tools

    • CSS | 8 yrs
    • Docker | 8 yrs
    • Git | 8 yrs
    • Grafana | 1 yr
    • HTML | 5 yrs
    • Prometheus | 1 yr
    • Ansible | 1 yr
    • TeamCity | 3 yrs
    • Helm Charts | 3 yrs
    • FluentD | 1 yr
    • NUnit | 3 yrs
    • Octopus | 3 yrs
  • APIs

    • CORBA | 3 yrs