Nemanja Stojanovic, Developer in Belgrade, Serbia

Nemanja Stojanovic

Software Developer

Location
Belgrade, Serbia
Toptal Member Since
July 1, 2014

Nemanja is a software developer with an inclination towards computer science and innovation. He has years of experience working with different programming languages and frameworks, giving him the ability to quickly adapt to any working environment or task.

Nemanja is available for hire
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Portfolio

CompanyMood GmbH (through Toptal)
Trailblazer, Ruby on Rails (RoR), Ruby
Tenex Developers (via Toptal)
Ruby on Rails (RoR), Ruby
Sittercity (via Toptal)
Angular, GoLand, Ruby on Rails (RoR), Ruby

Experience

Functional Programming - 6 yearsC++ - 6 yearsJavaScript - 5 yearsRuby - 5 yearsRuby on Rails (RoR) - 4 yearsSQL - 4 yearsGo - 2 yearsScala - 2 years

Location

Belgrade, Serbia

Availability

Part-time

Preferred Environment

Linux, Git, Visual Studio Code (VS Code)

The most amazing...

...thing I've written is software that can automatically find correctness and crash bugs in SMT solvers. Imagine quick-check that can generate entire programs.

Work Experience

2017 - 2017

Full-stack Developer

CompanyMood GmbH (through Toptal)
  • Implemented parts of a complex questionnaire system.
  • Worked on pulling valid statistical data from partial surveys.
Technologies: Trailblazer, Ruby on Rails (RoR), Ruby
2016 - 2017

Full-stack Developer

Tenex Developers (via Toptal)
  • Implemented multi-tenant support for a medical survey system.
  • Implemented an extensible questionnaire generation system, based on a declarative survey specification.
  • Created an automatic report generation tool which can generate human-readable reports based on survey results.
  • Implemented a modular, app-specific role/permission based authorization system.
  • Added questionnaire versioning and data migrations between survey versions.
  • Worked on a JavaScript custom audio player/recorder.
  • Integrated with Slybroadcast for sending messages to voicemail.
Technologies: Ruby on Rails (RoR), Ruby
2016 - 2016

Full-stack Seveloper

Sittercity (via Toptal)
  • Worked on an online sitters platform with customer feedback, flexible scheduling, and location-based matching.
  • Integrated Google Maps with tools to draw region and market polygons.
  • Worked on a Go-based geo-matching microservice.
  • Created an API adapter for a phone number management platform.
Technologies: Angular, GoLand, Ruby on Rails (RoR), Ruby
2015 - 2016

Full-stack Developer

PersistIQ (via Toptal)
  • Handled back-end business logic and testing.
  • Integrated with Nylas/Inbox.
  • Implemented automatic caching and invalidation for frequent and slow queries based on CRUD actions on models, rather than time-based expiration.
Technologies: Ruby on Rails (RoR), Ruby
2015 - 2015

Full-stack Developer

Ucontrol (via Toptal)
  • Created a Ruby-based server that manages events in a number of Bitcoin wallets.
  • Implemented an Arduino-Yun-based device that opens and closes valves in response to events sent from the server.
Technologies: C++, Arduino, Ruby
2014 - 2015

Full-stack Developer

FreeCode International
  • Implemented a Ruby-based transaction server which synchronizes users, products, orders, and invoices of an eCommerce solution with an accounting service.
  • Integrated with Klarna payment system.
  • Integrated with the Joomla eCommerce system.
Technologies: PHP, Sinatra, Ruby
2013 - 2015

Full-stack Developer

DS IT Consulting
  • Worked on an in-house CMS as a part of a team. Split up the CMS into several isolated components.
  • Implemented asset management in the CMS core using Fog to store data on AWS and exposing the REST API via Sinatra.
  • Worked on creating a separate agent with specialized logic communicating with the core via message passing, separating functionality from the core (similar to delayed_job).
  • Patched Dust.js grammar to support in-house needs.
  • Implemented a Dust.js parser/syntax checker with stricter rules. Used it to check the syntax of all view templates before the server actually started.
  • Implemented a URL-match parser similar to Sinatra's for use with an in-house server library for Node.js.
  • Implemented parts of the display server to pull and display pages cached on Riak.
  • Extended the core model to support more content types in a generic way and allow for simpler publishing (JRuby, Neo4j).
Technologies: Riak, Neo4j, Node.js, CoffeeScript, Sinatra, Ruby on Rails (RoR), Ruby
2010 - 2011

Developer

Informatika A.D.
  • Implemented a SNMP module for a SCADA system in C++.
  • Created a ladder-diagram editor with live debugging for the InfoPLC project in .NET.
  • Created an application to bundle a collection of rectangular images into a space-efficient atlas in .NET and JavaScript.
  • Worked on a thin client used to communicate with a legacy mainframe system over named pipes (.NET).
Technologies: JavaScript, .NET, C++

Skills

Languages

Scala, C++, Go, Ruby, JavaScript, Haskell, SQL, C, CoffeeScript, PHP, Elixir

Frameworks

Sinatra, Ruby on Rails (RoR), Graphcool, Akka, .NET, Angular, AngularJS

Libraries/APIs

jQuery, Underscore.js, Node.js

Paradigms

Functional Programming, Object-oriented Programming (OOP), Concurrent Programming, Logic Programming

Platforms

Linux, Amazon Web Services (AWS), Arduino, Visual Studio Code (VS Code)

Other

Compilers, Front-end Development, Microcontroller Programming, AI Programming, Game Development, Trailblazer

Tools

ANTLR, Microsoft Visual Studio, Git, GoLand

Storage

MySQL, PostgreSQL, Riak, Neo4j

Education

2017 - 2022

PhD in Computer Science

University of California, Santa Barbara - Santa Barbara

2009 - 2013

Batchelor's Degree in Computer Engineering

Metropolitan University - Belgrade