Ask HN: Freelancer? Seeking freelancer? (November 2013)

You will be working with a startup developing real-time prediction algorithms on manufacturing production-line data. You will be responsible for using machine learning algorithms to develop real-time “big data” predictive models.

You will need to be able to collaborate very closely with other team members on a frequent basis.

Responsibilities:

  - Using cutting-edge machine learning algorithms to develop real-time predictive 
    models on big manufacturing data sets.
  - Development of effective data visualizations to communicate data features

  - Experience with machine learning techniques including stochastic gradient descent 
    and regularized regression (LASSO, Ridge, Elastic-Net)
  - Experience with dimensionality reduction techniques such as PCA, SVD, 
    dictionary learning
  - Knowledge of basic linear algebra (eigenvectors, eigenvalues)
  - Experience with data visualization techniques
  - Experience with python development, including features such as multiprocessing, 
    shared memory, and unit tests
  - Experience with development using python packages such as numpy, scipy, pandas, 
    matplotlib, scikit-learn, and pymongo
  - Experience with database systems such as MongoDB and Redis
  - Experience with asynchronous web communication with packages such as Socket.IO
  - Experience with Git and collaborative coding
  - Experience with Ubuntu/EC2 development environment
  - (Nice to have) experience with Hadoop/Map-Reduce development
  - Previous experience developing predictive models
  - Previous experience developing data visualizations

I am looking for a person to create a website. The website will be a minimalistic, barebones bitcoin wallet with only the basic functions. The entire website will be 1 page. Layout/looks are not important, I am looking for the following functionalities: - User accounts - Bitcoin balance displayed for each user - Withdraw/deposit buttons so users can deposit or withdraw from their bitcoin balance - When a user deposits bitcoins, the bitcoins will go to a central bitcoin wallet for the entire site, but each user has his own balance based on how much s/he deposited

That's it. No social media or anything like that. Message me for clarification/details if you are interested.

http://www.gro-ventures.com

At Gro Ventures, we are pioneering agricultural supercomputing as a means to transform Africa into a breadbasket for the world in a span of 20 years. African agriculture is riddled with inefficiencies rooted in the lack of free-flowing, real-time information—a necessary component for data-driven reform and the creation of a truly functional commodities market. Data visualization is at the heart of agricultural supercomputing, defined as the integration of various technologies widely used around the world today to create the first real-time agricultural data analytics platform for Africa. Through agroinformatics and state of the art data visualization, we will for the first time in Africa’s history allow real time data driven decision making.

The project will consist of building several customized web visualizations based off the results of an agricultural study of several countries. We are seeking individuals or teams who can develop a visualization application consisting of pricing, yield, weather and various other economic and commodities driven data. You will work directly with our Head Data Scientist and Research Analysts to design and implement a state-of-the-art web visualization.

We are looking for talented, experienced engineers to work out of NYC for a period of 4-12 weeks depending on agreed upon timelines and deliverables.

Candidates must be proficient in the following areas: -Extensive Javascript and CSS experience. -Experience with one or more SVG or Canvas-based visualization toolkits, i.e. D3.js, or a keen interest in learning. -Know the ins and outs of websockets and AJAX communications with various backend data services. -Understand data binding and have used MV* frameworks enough to be dangerous. -Prior data analysis experience (even at the Excel level) very useful. -Basic understanding of financial concepts, including pricing and returns

Interested candidates should submit a resume or LinkedIn profile by email to info@gro-ventures.com with the subject line D3 Front-End and Data Visualization Consultant.

Android Prototype/MVP

Myself and a couple colleagues have an iOS sports trivia app at (http://playhattrick.com). We're getting some good download and usage numbers. People are asking for an Android version so we're looking for someone to help us build a prototype/MVP version. This isn't a long or big budget project but if it sounds interesting & you love sports, please get in touch.

erik[at]playhattrick[dot]com