Toptal Developer Skills Directory
The Toptal network includes experts across a very wide array of software development languages and technologies.
See the list below to browse freelance developer profiles with your desired skill.
Browse Toptal Developer Profiles
- 3D Modeling Software
- ABAP
- Access API
- ActionScript
- Ada
- ADF
- ADK
- AdMob
- Adobe Software Engineers
- Adobe Air
- Adobe CQ
- Adobe Flex
- ADO.NET
- Agavi
- Agile
- Agile QA Engineers
- Airbnb
- Ajax
- Akka
- Alexa
- Algorithm Developers
- Altcoin
- Amazon API
- Amazon EC2
- Amazon EMR
- Amazon Redshift
- Amazon S3
- Android
- Android App
- Android NDK
- Android SDK
- Angular Developers
- AngularJS
- AngularJS Experts
- Animation
- Ansible
- Apache
- Apache Airflow
- Apache Click
- Apache Cordova
- Apache OFBiz
- Apache Pig
- Apache Shale
- Apache Sling
- Apache Struts 2
- Apache Tapestry
- Apache Tomcat
- Apache Wicket
- Apex
- API
- API Development Specialists
- Apigee
- Appcelerator
- AppExchange
- AppFuse
- Appium
- Apple
- Apple Pay
- Apple Watch
- App Store
- ArcGIS
- Arch Linux
- ARCore
- Arduino
- ARKit
- ARM
- AI Engineers
- Asana
- ASP.NET
- ASP.NET Dynamic Data
- ASP.NET MVC
- Assembly
- Asterisk
- Augmented Reality Developers
- Aurelia
- Auth0 Developers
- Authorize.Net
- Automation Developers
- AWK
- AWS
- AWS Cloud Engineers
- AWS CloudWatch
- AWS Cognito
- AWS DevOps Engineers
- AWS EMR
- AWS IoT
- AWS Kinesis
- AWS Lambda
- AWS RDS
- Azure
- Babel
- Backbone.js
- Back-End Developers
- Bada
- Bamboo
- Banshee
- Basecamp
- Bash
- Batch
- BFC
- BigCommerce
- Big Data Architects
- BigQuery
- Bing Maps
- Bitbucket
- Bitcoin
- Bitcoin Cash
- Bitcoin Experts
- BizTalk
- BlackBerry
- Blender
- Blockchain Developers
- BlueBream
- Bluetooth
- Boost
- Bootstrap
- Bottle
- Bower Experts
- Box
- BPM
- Braintree
- Breeze.js
- Brew
- Brutos Framework
- BuddyPress
- Business Intelligence
- C
- C#
- C++
- Caching
- CakePHP
- Camping
- Capistrano
- Capybara
- Carma
- CartoDB
- Cassandra
- Catalyst
- Caveman2
- Celery
- CFWheels
- Chai
- Chart.js
- Chatbot
- CherryPy
- Chromecast
- Chrome Extension Developers
- CI/CD Engineers
- CircleCI
- Cisco Engineers
- Clarion
- Clojure
- Cloud Engineers
- Clover
- Clustering
- CMake
- CMS
- C# .NET
- C++ .NET
- COBOL
- Cocoa
- CodeDeploy
- CodeIgniter
- CodeKit
- Coders
- CoffeeScript
- Cognos
- ColdBox Platform
- ColdFusion
- ColdSpring
- Computer Vision
- Confluence
- Consul
- Core Data
- Core Java
- Corona SDK
- Couchbase
- CouchDB
- CppCMS
- Crashlytics
- CRM
- Cross-Platform
- Cryptocurrency
- Crystal Reports
- CSLA
- CSS
- CSS3
- CSS Javascript
- CTOs
- CubicWeb
- Cucumber
- CUDA
- cURL
- C++ VBA
- Cyber Security
- Cython
- D
- D3.js
- Dagger
- Dancer
- ÐApp
- Dapper
- Dart
- Data Analysts
- Database Developers
- Databricks
- Datadog
- Data Engineers
- Data Modeling Experts
- Data Modeling Analysts
- Data Scientists
- Data Warehouse
- DB2
- Debian
- Debugging
- Dedicated Developers
- Dedicated Android Developers
- Dedicated Front-End Developers
- Dedicated iPhone Developers
- Dedicated Java Developers
- Dedicated Magento Developers
- Dedicated Mobile App Developers
- Dedicated .NET Developers
- Dedicated PHP Developers
- Dedicated Web Developers
- Dedicated WordPress Developers
- Deep Learning Experts
- Delphi
- Demandware
- Design Engineers
- DevExpress
- Devise
- DevOps Engineers
- DirectX
- Distributed Systems
- Django
- Docker
- DocuSign
- Dojo
- DotNetNuke
- Dropbox
- Dropwizard
- Drupal
- DynamoDB
- eBay API
- Eclipse
- Eclipse RAP
- ECMAScript 6
- eCommerce
- eCommerce Consultants
- EDI
- Ejabberd
- Elasticsearch
- Electron
- Elgg
- Elixir
- Elm
- Embedded Software Engineers
- Ember.js
- Enfold Wordpress
- Enterprise
- Erlang
- ERP
- ESLint
- Espresso
- Ethereum
- Ethereum Smart Contract
- ETL
- Evernote
- Excel
- Excel Macro
- Expedia
- ExpressionEngine
- Express.js
- Extended Reality Developers
- ExtJS
- F#
- Fabric
- Facebook Ads
- Facebook API
- Fastlane
- Fat-Free
- Fault Tolerance
- FFmpeg
- Financial Software Developers
- Fintech
- Firebase
- Firefox
- Firmware Engineers
- Fitbit
- Flash
- Flask
- Flex
- Flutter
- Flux
- Force.com
- FormEngine
- Fortran
- FoxPro
- FPGA
- FreeBSD
- Freelance Developers
- Freelance Programmers
- Friendster
- Front-End Developers
- Front-End Web
- FTP
- FuelPHP
- Full-Stack Developers
- Full Stack Java
- Full Stack .NET
- Full Stack Node.js
- Full Stack PHP
- Full Stack Python
- Fusebox
- Game Developers
- GatsbyJS
- GCC
- Gentoo
- GIMP
- GIS
- Git
- GitFlow
- GitHub
- GLSL
- Gmail
- Go Engineers
- Golang
- Google Software Engineers
- Google AdWords
- Google Analytics
- Google API
- Google App Engine
- Google Checkout
- Google Cloud
- Google Cloud Platform
- Google Docs
- Google Drive
- Google Glass
- Google Latitude
- Google Maps
- Google Play
- Google Sheets
- Google Sheets API
- Google Sites
- Google Storage
- Google Web Toolkit
- Gradle
- Grails
- GraphQL
- Gravity Forms
- Grok
- Groovy
- Groupon
- Grunt Experts
- Gulp Experts
- Hadoop
- HAML
- Hamlets
- Hapi.js
- Happstack
- Haproxy
- Haskell
- Haxe
- Hazaar MVC
- HDFS
- Healthcare Data Scientists
- HealthKit
- Helm
- Heroku
- HFT
- Hi5
- Hibernate
- Highcharts
- Hive
- HTC Vive
- HTML5
- Hubspot
- HubSpot API
- Hugo
- Hybrid App Developers
- Hybris
- Hyperledger
- iAd
- iBeacon
- iCloud
- IIS
- ImageMagick
- Image Processing Software
- InfluxDB
- Informatica
- Infrastructure Engineers
- Infusionsoft
- Instagram API
- Integration
- Intercom
- IoT Developers
- Ionic
- iOS
- iOS and Android
- iOS App Development Experts
- iPad
- iPhone Developers
- iPhone App Developers
- Iptables
- IT
- ItsNat
- IT Web
- Jade
- Jasmine
- JasperReports
- Java
- Java EE
- JavaFX
- Java Python
- JavaScript
- JavaScript Consultants
- Javascript React
- Javascript Wordpress
- JavaServer Faces
- JBoss
- JBoss Seam
- JDBC
- Jee
- Jekyll
- Jenkins
- Jest
- JHipster
- Jinja
- JIRA
- JMeter
- JMS
- JNI
- Joomla
- jQuery
- JRuby
- JSON Expert
- JSP
- Jspx-bay
- Julia
- JUnit
- Jupyter
- JVx
- Jython
- Kafka
- Kajona
- Keras
- Kibana
- Kindle
- Knockout.js
- Koa
- Kohana
- Kotlin
- Kubernetes Experts
- LabVIEW
- LAMP
- Laravel
- Layar
- LDAP
- Leaflet
- Leaner Style Sheets (LESS)
- Leap Motion
- Lift
- Lightning
- LinkedIn API
- LINQ
- Linux
- Linux CentOS
- Liquid
- Lisp
- Lithium
- LMS
- Lodash
- Logstash
- Lotus Notes
- Lua
- Lumen
- Linux System Administrators
- Mach-II
- Machine Learning Engineers
- MacOS
- Magento
- MailChimp
- Mailgun
- Makefile
- Mapbox
- MapKit
- MapQuest
- MapReduce
- MariaDB
- Marionette.js
- Markdown
- Marketo
- Mason
- Mathematics Experts
- MATLAB
- Maven Experts
- Maya
- Maypole
- MEAN Stack Developers
- Medical Robotics Engineers
- Mega
- Merb
- Mercurial Experts
- MERN Stack
- Meteor
- Microservices
- Microsoft
- Microsoft Access
- Microsoft Dynamics CRM
- Microsoft Kinect
- Mixed Reality Developers
- Mixpanel
- Mobile Developers
- Mobile App Developers
- Mocha
- Model-Glue
- MVVM Experts
- MODx
- Mojolicious
- Moment.js
- Moneybookers
- MongoDB
- Mongoose
- Mono
- MonoDevelop
- MonoRail
- Moodle
- MPI
- MS SQL Developers
- MuleSoft
- Multithreading Experts
- Mustache
- MySQL
- Nagare
- Nagios
- NativeScript
- Neo4j
- NestJS
- .NET
- NetBeans
- NetBSD
- .NET Core
- NetSuite
- Nette Framework
- Network Programmers
- Neural Network
- Next.js
- Nexus
- Nginx Experts
- NLP
- Node.js
- Node.js Consulting Specialists
- Node.js Raspberry Pi
- nopCommerce
- NoSQL
- NPM
- NumPy
- Nuxt.js
- OAuth Experts
- Objective-C
- Object-Oriented Programming Experts
- OCaml
- Octave
- Oculus Rift
- Odoo
- Offshore Developers
- Offshore Android
- Offshore App
- Offshore iOS
- Offshore Java
- Offshore Magento
- Offshore .NET
- Offshore Node.js
- Offshore PHP
- Offshore Python
- Offshore Ruby on Rails
- Offshore Web
- Offshore Web Design
- Offshore Wordpress
- OneDrive
- OpenBSD
- OpenCart
- OpenCV
- OpenERP
- OpenGL
- OpenLaszlo
- OpenRasta
- OpenSocial
- Open Source
- OpenStack
- OpenUI5
- OpenXava
- Oracle
- Oracle ADF
- Oracle Forms
- Oracle SQL
- osCommerce
- Outsourced Developers
- Padrino
- Pandas
- Pardot
- Parse
- Pascal
- Passport.js
- Payment Processing
- PayPal
- Pebble
- Perl
- Phoenix
- PhoneGap
- PHP
- phpBB
- phpFox
- PHPixie
- PHP Laravel
- PHP MySQL
- PhpStorm Experts
- PHPUnit
- PHP Unit Testing
- PHP Wordpress
- Play
- Play Framework
- Plone
- PL/SQL
- Poco
- Polymer
- POS
- PostgreSQL
- PowerBI
- PowerBuilder
- PRADO
- PrestaShop
- Prezi
- Prism
- Product
- Prolog
- Protobuf
- Prototype
- Protractor
- PubNub
- Pug
- Puppeteer
- PureMVC
- Pusher
- PWA
- PyCharm Experts
- Pyjs
- Pylons
- PyObjC
- PyQt
- Pyramid
- Pyspark
- Pytest
- Python
- Python / C#
- Experts in Python Development Services
- Pytorch
- QA Engineers
- QA Analysts
- QA Leads
- QA Managers
- Manual Testers
- QA Specialists
- QA Testers
- Qlik
- QlikView
- QML
- Qt
- Quantitative
- QuickBase
- QuickBooks
- R
- R3 Corda
- RabbitMQ
- Rackspace
- Ractive.js
- Raspberry Pi
- Razor
- React Hooks
- React.js
- React.js Development Consultants
- React Native
- React Node.js
- React Web
- Realm
- Redis
- Redshift
- Redux
- Redux Saga
- Regex
- Release Engineers
- Remote Developers
- Requests
- RequireJS
- Responsive Web Developers
- REST API
- RethinkDB
- Retrofit
- Riak
- RIFE
- Robotics Engineers
- ROS
- RSpec
- RSS
- RStudio
- RStudio Shiny
- Ruby
- Ruby on Rails
- Ruby on Rails Consulting Specialists
- Rust
- RxJava
- RxJS
- RxSwift
- SaaS
- Saetta Web Server
- Sage
- SageMaker
- Sails.js
- Salesforce
- Salesforce1 Mobile App
- Salesforce API
- Salesforce Commerce Cloud Developers
- Salesforce Consultants
- Salesforce Lightning
- SAML
- SAS
- Sass
- SCADA
- Scala
- Scalatra
- Scientific Software Developers
- Scikit-Learn
- SciPy
- SCM Engineers
- Scrapy
- Scrum
- SDETs
- Security Engineers
- Selenium
- Sencha Touch
- SendGrid
- SendGrid API
- Sendmail
- Senior Android
- Senior Node.js
- Senior Ruby
- Senior Web
- Sentry
- SEO
- Sequelize
- Serverless
- SharePoint
- Shell
- Shell Script
- Shopify
- Shopify API
- Shopify Theme
- Sidekiq
- SignalR
- Silex
- Silverlight
- SilverStripe
- Sinatra
- Sinon.JS
- Sitefinity
- Slack
- Slim
- Smart Contract
- Smarty
- SMS
- Snap
- Snowflake
- SOA
- SOAP
- Socket.IO
- Software Architects
- Software Consultants
- Software Developers
- Software Engineers
- Solaris
- Solidity
- SOLIDWORKS
- Solr
- Sonarqube
- SOQL
- Spark
- SPARQL
- Splunk
- Spotify
- Spree Commerce
- Spring
- Spring Boot
- SpriteKit
- SQL
- SQL CLR
- SQLite
- SQL Server
- SQL Tuning
- Squarespace
- SSH
- SSIS
- SSRS
- Startup
- Stripe
- Stripes
- Struts
- Stylus
- Subversion (SVN)
- SugarCRM
- SUN
- Svelte
- SVG
- Swagger
- Swift
- Sybase
- Symbian
- Symfony
- Sys Admins
- System Security Developers
- Tableau
- TACTIC
- Takes
- Talend
- Teamcity
- Technical Lead
- Technical Writers
- Telerik
- TensorFlow
- Teradata
- Terraform
- Test Automation Engineers
- Test Automation Architects
- Test-Driven Development Experts
- Test Engineers
- Test Software Engineers
- ThinWire
- Three.js
- TIBCO
- Titanium
- Tizen
- Tntnet
- TokBox
- Tornado
- Trading Software
- Trello
- T-SQL
- Tumblr
- TurboGears
- tvOS
- Twig
- Twilio
- Twitter Bootstrap
- TypeScript
- TYPO3
- TYPO3 Flow
- Uber
- Ubuntu
- UDP
- UI
- UIKit
- UiPath
- UI/UX
- UI, UX, and Front-End Developers
- Umbraco
- UML
- Underscore.js
- Unified.js
- Unit Testing Experts
- Unity or Unity3D
- Unix
- Unreal Engine
- Usability Engineers
- UX
- Vaadin
- Vagrant
- Vanilla JS
- Varnishdan
- VBA
- VB.NET
- VBScript
- vBulletin
- Velocity
- Verilog
- Vibe.d
- Vimeo
- Vine
- Virtual Reality Developers
- Visio
- Visual Basic
- Visualforce
- Visual Studio
- VMware Engineers
- VoIP Engineers
- VoIP Software
- Volusion
- VRaptor
- VSS
- vTiger
- Vue.js
- Vuetify.js
- Vuforia
- Wavemaker
- Web Developers
- Web2Py
- WebAssembly
- WebKit
- WebObjects
- webOS
- WebRTC
- Web Scraping
- Web Services
- WebSphere
- WebStorm Experts
- Webware
- WebWork
- Weebly
- Windows
- Windows App
- Windows Phone
- WinForms
- Wireshark
- WooCommerce
- WordPress
- WordPress Plugin
- Wordpress Specialists
- Wordpress Theme
- Wowza
- WPF
- WSDL
- Wt
- Xamarin
- Xamarin.Forms
- XAML
- Xbox
- Xcode
- Xero
- XHTML
- XML
- XMPP
- XNA
- XP
- XPath
- xQuery
- XSD
- XSLT
- xUnit
- Yahoo! Software Engineers
- Yahoo! Store
- YAML
- Yelp API
- Yesod
- Yii
- Yii 2
- YouTube API
- Zabbix
- Zapier
- Ze Framework
- Zen Cart
- Zend
- Zendesk
- ZK
- Zope 2
- Zsh
- zTemplates
- ZURB Foundation
Check out some of our top developers
Max Flander
United StatesToptal Member Since November 29, 2015
With a Ph.D. in mathematics, Max's been working as a data scientist for the past three years with experience covering data engineering, predictive modeling, recommender systems, information retrieval, and crowd-sourced data curation. He's an excellent communicator and has worked in agile teams of varying sizes. Max is a favorite for running stand-ups, planning, and team retros, thanks to his knack for cutting to the heart of the discussion.
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Keith Zimmerman
United StatesToptal Member Since August 19, 2014
Keith is an experienced architect, developer, and modeler with superb communication skills and the ability to see a project through from beginning to end. He is equally comfortable with the rapid prototyping needs of startup companies and the Agile development workflow in larger teams.
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Robb Priestley
CanadaToptal Member Since February 13, 2017
Robb is a resourceful software professional with over 15 years of experience in building and delivering production-ready, enterprise-grade software of all kinds. He's educated in computer science and business and is a certified PMP. He has worked with a diverse set of teams and has top quality communication skills. His passion for development and his focus on business results makes him an ideal candidate for your consideration.
Show MoreToptal Connects the Top 3% of Freelance Talent All Over The World.
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