Top Upwork Freelancers

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  1. Peggy S.

    Peggy S.

    Support Master/Leader. Workaholic. Walking Dead Aficionado.

    United States - Last active: 3 days ago - Tests: 6

    www.linkedin.com/in/angiesmithsc/ I have spent the last few years supporting start-ups and SaaS companies in Silicon Valley like Pbworks (since 2008) and Recurly (since 2011) I have the highest satisfaction rates and lowest response times of any of my peers. I have the ability to quickly assess whether an issue is urgent and requires immediate escalation or if further troubleshooting will provide an easy solution. I have nearly a decade of experience offering unmatched support for companies, from small start-ups to fortune 500 businesses. I have used tools such as salesforce, livechat, zendesk, gotomeeting, and google hangouts to provide support. I am hard working, motivated, honest, dependable, creative, precise, detail oriented and above all else committed to customer satisfaction. I don't cut corners, I don't give the run around, I am in it to get results and make customers happy.

    $31.74 /hr
    956 hours
    4.98
  2. Heikki Arponen

    Heikki Arponen

    Math PhD Quantitative Analyst and Data Scientist

    Finland - Last active: 2 days ago - Tests: 4 - Portfolio: 3

    I'm a Finnish math PhD, Data Scientist/Quant and Python expert with expertise also in Matlab and Mathematica. I have around 10 years of experience in academia as a researcher, and a couple of years after that as a freelance consultant mathematician and coder. Here's my business page: http://www.quantmechanics.com/ Primarily I am skilled in the following mathematical programming subjects: - Time series analysis and modelling (parametric, nonparametric, multivariate) - Machine learning (e.g. Recurrent Neural Networks) - Optimization (LP, QP, Convex, Large Scale ML/TS problems) Other skills: SQL, financial modeling, data analysis, stochastics, stochastic PDEs, wavelets, monte carlo, regression analysis (linear, nonlinear, logistic), time series analysis, econometrics, VARMA etc., econophysics, nonlinear dynamics, portfolio theory, CAPM, factor models, GARCH, VaR, neural networks, backtesting, algorithmic trading Here's me at LinkedIn: http://fi.linkedin.com/pub/heikki-arponen/34/590/248/ Github: github.com/harpone List of publications: http://scholar.google.fi/citations?user=kFxXih0AAAAJ

    $85.00 /hr
    243 hours
    5.00
  3. Laszlo M.

    Laszlo M.

    senior creative designer and photographer

    Ireland - Last active: 10 days ago - Tests: 7 - Portfolio: 25

    I have been interested in visual arts since I was a teenager. I had the opportunity to work with some expert photographers and graphic artists allowing me to improve better than any other ways. My skills and experience now cover a wide range of Creative Arts techniques, allowing me to fulfil complex tasks as well as to develop custom solutions for specific purposes.

    $30.00 /hr
    362 hours
    4.84
  4. Gadi Meir

    Gadi Meir

    Access Database and Excel VBA Developer

    Israel - Last active: 13 days ago - Tests: 18 - Portfolio: 9

    Senior Access Database and Excel VBA Developer with over 25 years of programming experience. Native English Speaker. Hard-working, honest, reliable, creative, self-motivated and efficient. Working extensively with Access, Excel together with VBA since 1995 and SQL Server since 2003. Outstanding analysis skills to ensure requirements are fully satisfied. Available to work in different timezones. VP Development in Software house - Access/SQL and Excel developer building complex algorithms.

    $39.00 /hr
    259 hours
    5.00
  5. Sampath I.

    Sampath I.

    AWS / Linux / EC2, RDS, VPC, Cloud Formation,Autoscaling / Docker

    India - Last active: 21 days ago - Tests: 4

    Having more than 8 years of experience in Linux/Unix IT world, from installation, configuration of OS, packages, designing High Available (HA) and Salable environments. Worked for various clients and domains - IT Telecom, E-commerce , Real-estate, Mobile and Pharma clients. More than 5 years of experience in Amazon Web Services ( AWS ), EC2, RDS, VPC, S3, etc. Designed and implemented HA and Auto Salable environments. Worked on Hardening security, Cost optimization and Performance Optimization. Load Balancing, Backup and Disaster Recovery ( DR ) environments. Managed and monitored 1000+ VMs for 50+ clients using various tools and scripts. Automated environment backups, deployments, scaling using various tools, scripts and REST API command line tools. Built tools to Vertical and Horizontal scale in and out. Regular security audits, cost optimization, backup audits. I am always look for new challenges and love my work.

    $50.00 /hr
    675 hours
    5.00
  6. Dave K.

    Dave K.

    Business Writing Consultant

    United States - Last active: 5 days ago - Tests: 21 - Portfolio: 6

    To help business owners experience more success through better communications including writing business plans, marketing plans, sales tracts, grant proposals, blog, article and web post editing. I have many years of experience in writing and selling comprehensive financial plans, making the technical and mundane easily understandable to enhance sales. More recently I have served successfully as a business consultant in all of the above listed areas. I can help your ideas be communicated clearly in an inspirational manner!

    $38.89 /hr
    108 hours
    4.83
  7. Joshua Mock

    Joshua Mock

    Front-end architect

    United States - Last active: 24 days ago - Tests: 3

    I'm a front-end architect with 14 years of web development experience. My strongest suits are planning and building highly interactive JavaScript applications in a web browser and building Node.js applications. I currently work on a team of 30 developers where I help vet new tools and frameworks for front-end development, and advise, assist and train product-building teams on the best tools for the projects they are assigned. I am highly skilled in JavaScript. I have built several front-end applications in Backbone.js, Marionette and React.js and am familiar with Ember.js as well. I'm also proficient in Python, PHP, HTML5 and CSS/SASS and somewhat capable in Ruby as well if the need arises.

    $90.00 /hr
    341 hours
    5.00
  8. Yura Duk

    Yura Duk

    Graphic UI\UX Designer and Usability Architect

    Ukraine - Last active: 1 month ago - Tests: 2 - Portfolio: 8

    My Experience: More than 6 years of Graphic and Web design. More than 2 years of Usability and User Experience. Services: - Designing all types of user interfaces; - Analysis, prototyping, and re-design of existing user interfaces for desktop, web, mobile applications and interfaces, automotive devices; - Creating logos, corporate identity, branding and re-branding; - Graphic design, illustrations, icons; - Clarification / collection or creation of interface requirements, creating documentation; - Expert evaluation of an user interface; - Usability and UI design consulting; - Creation of schematic, clickable and high-fidelity prototypes; - Creation of Style Guide document, which include a set of rules that are for a design and development of software interfaces;

    $33.33 /hr
    136 hours
    5.00
  9. Amy Barron Smolinski

    Amy Barron Smolinski

    Voice Actor, Voiceover Artist, Actor, Director

    United States - Last active: 3 days ago - Tests: 5

    Over the last 25 years, I have worked extensively as an actor, director, and arts educator throughout the U.S. and since 2010, in Kaiserslautern, Germany with the U.S. Military community. My training and experience specifically with the voice enable me to offer a wide range of vocal qualities. I have worked as a voice talent and voiceover artist since 2003, first in radio spots, and most recently as an audiobook narrator for Beacon Audiobooks and Gutenberg Reloaded. As a voice actor, I specialize in bringing stories to life through narration, with a rich variety of vocal quality. My tracks are edited by a professional audio engineer, and guaranteed to be clean, crisp, and consistent--or I will redo them at no charge.

    $77.78 /hr
    132 hours
    5.00
  10. Jeffrey Bacon

    Jeffrey Bacon

    Published Professional Writer

    United States - Last active: 1 month ago - Tests: 6 - Portfolio: 9

    Do you want text that will attract and hold readers to your product? I write research-backed, original, effective texts while working shoulder-to-shoulder with clients. With more than 30 years of publishing experience under my belt, I'm now available on oDesk and Elance. I provide Copyscape-guaranteed content that connects my clients to their customers. My portfolio includes material varying from original scientific research through short, catchy social media posts, and my readership ranges from fishermen through investors, CEOs, scientists, and top-level administrators. Check out my portfolio for a few samples.

    $44.00 /hr
    133 hours
    5.00