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Last updated: October 1, 2015

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Niels Haering

Computer vision and machine learning R&D

United States - Tests: 1

I am a computer vision expert with a PhD in automated video analysis. I have a proud record of developing robust computer vision and machine learning solutions, and draw on 19 years of R&D, and management experience in automated video analysis: * scene analysis, * background modeling, * motion estimation, * camera calibration, * automatic geo-registration, * object detection, tracking, and classification, * event detection, * context and model learning: supervised, unsupervised and semi-supervised Large recent projects * bridged the semantic gap between RGB pixels and textual content summaries of video content, * integrated visual data with GIS and web resources to automatically geo-locate images, * developed and field tested autonomous rapidly-deployable video analysis nodes, comprising 11MP cameras, WiFi/3G/4G, low-power Intel PC board, Li-ion batteries, that operate indefinitely powered by a 60W flexible solar charger, and * visually estimate heart rate from webcams I'm happy to review your project and help you size your work

$111.11 /hr
334 hours

Timothy K.

Timothy K.

Experienced Engineer and Data Science Expert

Kenya - Tests: 4 - Portfolio: 3

I have a passion for technology and software development and this has given me the required zeal to learn and work with a number of programming languages like Python, C, Java, matlab and php. I can model and solve differential equations for different systems and to mention am also conversant with various technologies including AWS, Github,bitbucket and BLE. I have three years experience in data science including machine learning (Both supervised and unsupervised learning). I have lots of experience in supervised learning (classification and regression) using KNearest neighbors,Neural networks,Adaboost,random forests,support vector machines,Lasso Methods,ElasticNet methods ,linear and logistic regression. In unsupervised Methods am conversant with K means clustering, Principal component analysis (PCA),ward,Birch and Affinity propagation. Am also very experienced in text learning, recommender systems and anomaly/outlier detection. markov chain models for reinforcement learning are also part of my expertise Am a results driven individual who ensures work is completed accurately and in a timely manner as required.I have worked in the service industry where customer experience and satisfaction is key. I can work well with minimum supervision and always ensure that I follow my clients timing and design specifications to ensure total satisfaction to my client.

$11.11 /hr
0 hours

Pranav Verma

Pranav Verma

Big Data: Spark, Data Science: Python, BI: MicroStrategy

India - Tests: 1 - Portfolio: 14

Pranav is a data person helping enterprise, small business, and startups solving their data problems at scale. Graduate from Indian Institute of Technology, IIT Guwhati, carries 12 years of significant experience working on data engineering and data science. Pranav had been associated with esteemed businesses including Invitation Homes, Kaiser Permanente, Zurich Financial Services, Hughes Depot Supply, Boeing, Nielsen, Adap TV, Ecolab, CNA Financial, to name very few in list. OFFERING ------------- 1. Data Ingestion - Ingesting data from variety of sources to a big data ecosystem. - Data sources can be operational systems (CRM, ERP, SCM, CMS), Databases (Relational, NO SQL), Streaming (Machine Logs, Social Media, Event Processing), Files (Word, Excel, CSV, PDF, Text) - Big Data ecosystem can be Apache Hadoop or Apache Spark 2. Data Scale - Moving data to a big data ecosystem - Parallel processing through Apache Spark - Storing data to NO SQL databases for pre-processing 3. Data Wrangling - Data Lake development including data pipelines - Pre-processing tasks including data parsing, data profiling, data shaping, data inferencing, data enrichment, data harmonization, data cleansing, data transformation, data combining 4. Data Context - Natural Language Processing of un-structured and multi-structured data Entity selection, Featurization, Part-of-Speech, Lemmatization, Stemming, TF- IDF, Scoring - Entity Resolution, Linked Data, Semantic Web, Third Party enrichment, Ontology, knowledge graph, Word Disambiguation 5. Data Exploration - Exploratory data analysis to summarize dataset characteristics - Mining the hidden patterns in data - Statistical analysis concluding right analytical model 6. Data Analytics - Build a machine learning model meeting requirements - Validating and Testing the data model prepared 7. Data Communication - Analyzing results via Visualization, D3.JS or Tableau - Providing actionable insights through automation SKILLS --------- 1. Framework: Apache Hadoop (MapReduce, YARN, HDFS) 2. Distributed Programming: Apache Spark - Parallel processing of large scale data, batch or streaming - In-memory computation of big data in seconds or less - Machine learning implementation - Graph data analysis - Realtime streaming - Processing in Python, Scala, and R 3. Key Map Data Mode: Apache HBase, Apache Cassandra 4. Key Value Data: Reddis 5. Graph Database: Apache Giraph, Neo4J 6. Document Data Model: MongoDB 7. Data Ingestion: Apache Flume, Apache Sqoop 8. SQL-like Processing: Apache Hive, Apache Impala 9. Message Oriented Middleware: Apache Kafka, RabbitMQ 10. Service Programming: Apache Avro, Apache Zookeer 11. Scheduling: Apache Oozie 12. Applications: Apache Nutch, Apache Tika 13. Search Engine Framework: Apache Solr, Apache Lucene 14. Data Visualization: D3.JS, Tableau, Qlikview, MicroStrategy 15. Distribution: Cloudera, HortonWorks, MapR, Pivotal SPECIALITY --------------- 1. Marketing Data Handling marketing automation, CRM data, POS data, click-through data, social media, second & third party data 2. Marketing Analytics - Customer Loyalty - Customer Churn - Customer Segmentation - Upsell/ Cross-sell - Discount Targeting - Customer Behavior 3. Marketing Application Data Management Platform, DMP for marketers, publishers, & agencies Communication ============= I possess excellent English skills and and use Skype/ TeamViewer/ GotoMeeting/ to communicate with my clients on Upwork. Availability ========= Available from 9:30 AM (IST) to 1:00 AM (IST) for my clients from different time zones. Contact ====== Please send your queries to or Skype at vpranav121

58% Job Success
$55.00 /hr
3,020 hours

Rob Chambers

Rob Chambers

Python expert and scientific software architect

United States - Tests: 2

I'm a highly trained, expert engineer with excellent academic and industrial credentials. American, native English speaker. My degrees are in Mechanical Engineering, but I've found that my true love is software development. I love working on teams with other passionate and technically savvy people, but I have plenty of experience in management and report-writing. I am currently in the midst of long-term world travel, so I'm looking for quarter- to half-time freelancing work. I can work sporadically and long-term, but I can also settle down temporarily and put in very heavy hours when needed. I'm an expert Python programmer (5+ years experience) and I have several years combined experience in other languages as well (HTML/JS/CSS, MATLAB, C/C++). I am a full stack developer, with experience administering on-site and cloud servers, writing server-side and client-side software, developing complex and parallelized data processing algorithms, and implementing web- and desktop-based UIs. I have worked on many small projects where I am the sole developer, but I have also led 5-10 person teams to develop larger systems. As a mechanical engineer turned software developer, I have a special interest in working at the intersection of software with math, science, and engineering. Fields of interest: Biology, numerical simulation, algorithms, software development. Particular competencies: Taking ownership of solutions from conception to delivery... problem specification, algorithm development, software implementation, testing, and distribution. Skills/tools Python (including Numpy, Scipy, Pandas, Scikit-Learn, Cython, SQLAlchemy, Enthought Traits, Anaconda, IPython Notebooks, etc.). Web and Hybrid Mobile App development (HTML/JS/CSS; AngularJS; Cordova, Ionic), MATLAB (including many toolboxes). Experience building and administering Amazon Web Services (AWS) systems. Comfortable with Windows, OS X, and Linux.

$75.00 /hr
13 hours

Peter Chervenski

Peter Chervenski

Peter Chervenski

Bulgaria - Tests: 1 - Portfolio: 1

C/C++, Python. Rich experience with Microsoft Visual Studio, Dev-Cpp and Eclipse environments. Expert in neural networks, genetic algorithms, and combinations (NeuroEvolution of Augmenting Topologies (NEAT), HyperNEAT). Genetic programming. Artificial embryonic development / indirect encodings. Computer vision / OpenCV (image processing, object detection, recognition and tracking). Automated trading systems / Metatrader 4 (MQL). nVidia CUDA. Game development, graphics and physics engines. Behavior trees for game AI. Physically-based animation. Destructible geometry / finite element modeling. Scientific computing, NumPy/SciPy, SAGE and SymPy.

$27.78 /hr
11 hours

Dmytro Chasovskyi

Dmytro Chasovskyi


Estonia - Tests: 1

I am Software Engineer from National Technical University of Ukraine "Kyiv Polytechnic Institute". Fields of my interests are programming, tutoring, solving mathematical and programming tasks and competitions and layout documents in Latex. Now I have been studying in University of Tartu, Tartu, Estonia. I am Software Engineer who is interested in Algorithms, Bioinformatics and most grow branches of contemporary Data Science. I am expertise in Python, migration of data between different databases, data mining, usual scripting for operation systems and for websites searching. My projects were related to machine learning, data visualization, working with relational databases, MongoDB. Numpy and Scipy are not something unusual for me. I well-versed in creating and make it awesome reports with LaTeX, especially my strong side is creating mathematical documents, reports and presentations. That is because I have mathematical and programming education. Examples of my works: In my field of interests included C++ and algorithms. Prove of my knowledge is - our team is on 22nd place(26 winners). Main programming language was C++. The most strong background in C++ is 23 basic patterns( GoF ) that I know by heart. I have wide fields of interests, therefore, I successfully prepared more than 5 students for the EIE(External independent evaluation) - Ukrainian main test to entrance to the universities in physics and mathematics. I was winner in mathematical and physics competitions during the secondary school in Kyiv. Moreover, I have an aim to be multilingual and I am study English permanently. Therefore, I do small translation tasks from English to Ukrainian and from English to Russian. I have been studying all the time and trying to discover world every single moment. The last courses I have taken: Discrete math: ( Python programming: ( SEO courses : '2015 SEO Secrets - Make Money From FREE Google SEO Traffic' (, 'HTTPS for SEO - Better Rankings using HTTPS!? ' ( The last book I have read: The Clean Coder: A Code of Conduct for Professional Programmers (Robert C. Martin Series) 1st Edition ( If you have doubts, why I should be hired. Then one fact for you, I love do tasks well before the deadline. And I am very picky about the quality of work done by me.

83% Job Success
$20.00 /hr
34 hours

Andrey Zimin

Andrey Zimin

High-performance computing | Fortran & Python programming

Russia - Tests: 5 - Portfolio: 2

Expert in: - Fortran 2003 and C (high-performance number-crunching) + MPI parallelization; - Matlab and Python (fast deployment of complex algorithms); Practical experience: - Scientific numerical simulations - ODEs, PDEs (linear, non-linear, stiff, etc.) - Optimization problems (global and convex) - Machine learning - Linear algebra (large-scale symmetric eigenproblems) Libs: - BLAS/LAPACK routines from Intel MKL, AMD ACML or ATLAS; - Sparse solvers from PETSc and SLEPc: eigenvalue problems, linear equations solution; - hdf5 library: powerful input/output standard; - SUNDIALS and KINSOL; System administration: - Linux server & desktop administration (including deb & rpm based) + hpc cluster support;

100% Job Success
$20.00 /hr
77 hours

Ritabrata Bhattacharyya

Ritabrata Bhattacharyya

Expert in Automated Quantitative Trading Systems Design & Development


In a Nutshell: ---------------- Expert in Quantitative Trading Strategies, Python, R, Automated Trading System Design and Development, Interactive Brokers integration Background: ---------------- Ritabrata has a consistent record of professional under-achievement. He is widely regarded as the most dysfunctional and unpopular member of any team he has ever worked in. Through a stroke of blinding luck, he was selected for a graduate scholarship at IIT Mumbai, where he studied Engineering and Computational Biology. His stellar academic performance and multiple publications in International peer-reviewed journals were a surprise to many. His initial career at Oracle was marked by a series of over-hyped Loyalty and Marketing product development initiatives, which delivered no business value but only managed to grant him multiple software patents for pioneering work in his field. His subsequent career at TCS as the Global Head of Customer Experience Management (CEM) Solutions consisted of multiple ill-judged and unimaginative moves that helped destroy the value of CEM solutions right across the industry. With his diverse current roles as Faculty of WorldQuant University and Quantitative Strategies expert at Alphative, CrowdKast and Convergence Inc - he has the opportunity to wreak havoc on a truly global scale. It is a worrying new juncture in a dismal career. Matters are only made worse by his long-standing affiliation to Mensa - the notorious group of nitwits. Ritabrata's apparent self-knowledge is his only redeeming feature.

100% Job Success
$50.00 /hr
291 hours

John Paul Janecek

John Paul Janecek

Data miner,data extraction or webscrapping using python based tools

Philippines - Portfolio: 3

I have extensive experience in web automation using python tools like selenium and beautiful soup. I can create python/javascript scripts for extracting data from websites for you. Or if you wish I can extract the data for you using my customized headless browser solution which is able to run multiple browsers at once and deliever the data to you in the desired format. I also have experience in javascript, closure, elisp and scheme. I am able to extract data from complicated javascript websites like facebook and I have extensive knowledge in graphseach queries. So I could perform graphseach queries such as "bars located in chicago", get the bar's facebook page and extract the data. I can perform what ever graphseach queries you desire. I can also extract the data from other websites if you desire. If the website is a static based website I will use a tool like beautiful soup with the appropriate html parse. For sites which have bot detection and rely heavily on javascript it is better to rely on a headless browser with selenium.

88% Job Success
$15.00 /hr
0 hours