Top Upwork Freelancers

Clear all filters

Guillaume Ara

Guillaume Ara Agency Contractor

.NET Programmers (C#, ASP.NET MVC, Xamarin, WPF, WCF)

El Salvador - Tests: 5 - Portfolio: 1

C# Programmers (ASP.NET MVC, Xamarin, WPF, WCF) at Central American Software Services, a French web and mobile development company based in El Salvador. CMMI and Agile methodologies.

Associated with: Central American Software Services

$18.33 /hr
0 hours

Sergio Pulgarin

Sergio Pulgarin Agency Contractor

Software Engineer

Colombia - Tests: 8 - Portfolio: 3

Providing clients around the world with high quality services in Software Design, Engineering and Development. I have a degree in Electronic Engineering; I have excellent Software development, and Networking skills. My area of expertise is design, engineering and development of Software applications with Networking functionality, use and design of functionality exposed through web APIs. Additionally, I'm experienced in the following areas: - Networking applications: TCP Servers, Sockets, Network requests, Web viewers, Web APIs. - Webkit development for full integration of Web and Desktop applications. - GUI development: Native looking user interfaces. - Filesystems: Creating, reading and writing, text and custom data types. - SQL Database handling for desktop and web applications. - SkypeKit application development. - Server side web applications using Django. I have experience in Object-Oriented design and use better coding practices; I always keep in mind readability and reusability. I also deliver documented sources, when required.

Groups: LoginRadius

Associated with: SOLID, GSOLID

$33.33 /hr
732 hours



Senior Java EE / ExtJS Developer

Venezuela - Tests: 3

EXPERIENCE: - Solid experience using the Java J2EE platform developing web-based systems and service-oriented applications (SOA), assuming a variety of roles such as developer, platform architect and project execution leader (planning, follow-up, etc). - Design and deployment of highly scalable system architecture for web based applications, implementing Java frameworks such as Servlets/JSF for front-end layer, EJB3 objects for back-end layer, Hibernate/JPA for persistence, and jBPM for workflow process modeling. - Experience in front-end web development using AJAX frameworks and technologies with JavaScript such as ExtJS, YUI and RichFaces. ATTITUDE: - Skilled, motivated and devoted Software Developer, experienced with a variety of modern IT technologies. - Autodidactic and interested in learning new technologies with research and dedication. - Adopt a variety of work team roles, such as project leader, development assistant, functional analyst, among others. - Highly analytical approach capable of resolving difficult business problems by providing quality software solutions. - Capable of delivering competent and proficient efforts and work under pressure.

$27.78 /hr
285 hours

Rowan V.

Rowan V.

Data Scientist, Data Developer, Visualization

United States - Tests: 7

I am passionate about quantitative investigative methods and data analysis. I have experience utilizing a variety of methodologies and tools, including R, Python, JavaScript, and Tableau in order to answer data-related questions. Currently @Twitter, formerly at Spartz, Inter-American Development Bank, and Cambridge Energy Labs. I have a B.S. from MIT, and have a strong background in experimental design, statistical analysis, data visualization, and machine learning techniques. With over 10 years of programming experience and a strong statistical background, I can help you make sense of your data. I am able to provide writing and coding samples of my past work, for a few of my past projects, please check out

$80.00 /hr
9 hours

Aaron Cevallos

Aaron Cevallos

Enterprising Entrepreneur with Elite Academic Background

United States - Tests: 4 - Portfolio: 1

Aaron Cevallos, a native of Middletown, Maryland, graduated from Princeton University in 2012 with a major in Ecology and Evolutionary Biology and a certificate (minor) in Environmental Studies. He is the founder of The Ivy Edge (, a college admissions agency dedicated to helping students earn entry into elite academic institutions. He has several years of experience in tutoring students for college entrance examinations and Advanced Placement tests, and has helped others raise their SAT scores by over 300 points. Aaron also has exceptional language abilities (English/Spanish), extensive web-design experience, and exemplary research skills.

$35.00 /hr
23 hours

Elijah Shaw

Elijah Shaw

Customer Service Specialist | Virtual Assistant

United States - Tests: 8

I have over 12 years' experience in customer service in a wide range of industries. Combining skill and knowledge in a wide variety of office products with motivation and dedication to results, I specialize in providing quality services with high standards under strict deadlines. I have the time management skills and fully equipped and dedicated home office to bring value to your business and help you succeed. Expertise: Customer service Microsoft Word Microsoft Excel Google Docs, Gmail, and Calendar E-mail handling CRM (Customer Relationship Management) software Spreadsheet creation Scheduling Outlook Outside of work, I like spending time in nature, enjoying life to the fullest. I'm an active person that enjoys running, biking, and the occasional camping/fishing trip. I also have a wide range of hobbies from LED lighting and aquariums to gardening and homesteading. Thanks for stopping by my profile!

$11.11 /hr
333 hours

Jaime antonio M.

Jaime antonio M.

Spanish Translator - IT Engineer

Bolivia - Tests: 18 - Portfolio: 3

I am a native Spanish speaker, I have translated in the past to/from English, technical and non-technical documents. I have middle knowledge of German too (B2). I am a Telecommunications engineer, I have network background (CCNA), basic programming skills in VB, Java, C, and .NET, programming for microcontrollers (PIC and ATMEL), and basic Android applications. I have understanding of Web Technologies (HTML, CSS, etc) and have designed basic sites in .NET.

Groups: oTranslators

$11.11 /hr
15 hours

Jaime H.

Jaime H.

Proofreading, *Customer Service, English, Spanish, Translator*

Colombia - Tests: 12 - Portfolio: 1

Over the last several years, I have had the joy of building a successful career as a freelance business services provider. For a Colombian-American, having returned home after a very long time, this has truly been a blessing in my work life. I have had the opportunity to work with many different entrepreneurs around the world in a wide variety of projects that include some of the following: Translation Tourist guide Customer Service Translation & Localization Social Media Marketing Telemarketing General Project Management and Administration Virtual Assistance Data Entry Appointment Setting ...and other expertise.

Groups: oTranslators

84% Job Success
$11.11 /hr
1,426 hours