Improving used cars price evaluation model, reduction of the estimate error from 6.7% to 4.9%.SQL, R, data.table, bayesian optimization, genetic algorithms, LightGBM, XGBoost, CatBoost, Keras.

Participation in machine learning contests at Kaggle platform. https://www.kaggle.com/sergeylebedev/competitionsNY taxi trip count predictionhttps://www.kaggle.com/c/yellowtaxi (18/103)ML Bootcamp VI "The forecast of the audience's response to the Internet survey" https://mlbootcamp.ru/round/14/sandbox/ (41/214)R, data.table, Matrix, parallel, xgboostHome Credit Default Risk https://www.kaggle.com/c/home-credit-default-risk/overview (1827/7198)R, data.table, Matrix, xgboost, lightgbm, rBayesianOptimizationOil debt prediction https://boosters.pro/gazprom_smartoil_contest(29/132, 32/90)R, data.table, lightgbm, plotlyClassification of astronomical sources https://www.kaggle.com/c/PLAsTiCC-2018 (71/1094)R, data.table, parallel, lightgbm, signal, quadprogUser feedback prediction https://mlbootcamp.ru/round/15/rating/ (263/535)R, data.table, lightgbmProtein localisation in cells https://www.kaggle.com/c/human-protein-atlas-image-classification(416/2172)R, EBImage, data.table, lightgbm, xgboost, public kernels voting

Testing of information systemsDeveloping test plans, test designs, making test reportsDevelopment and refinement of requirements for productsDesigning, building, configuration and maintenance testing environmentDevelopment of test methods Participation in trialsJIRA, Python, Selenium, Jenkins, Linux.

Manual and automated testing of web-services (document management in the public order system).Python, Django, Selenium, JIRA, Mantis, PostgreSQL, git.

ResponsibilitiesDevelopment automated control systems on the railway surfacing machinesDevelopment and implementation of algorithms for the surfacing of the railway track, in particular, automatization of track renewal trainsDeveloping railway track surfacing modeling tools with Matlab/Octave.Developing modules for sensors calibrationTesting, writing documentationAchievementsDeveloped railway track surfacing tool https://github.com/sergey-lebedev/wtsimDeal with third-party libraries algorithms: BPMPD, levmar, GAlibDeveloped diagnostic system for ballast cleanersDeveloped railway surfacing module, processing railways surfacing tasks presented in ALC format, surfacing by laser beamDeveloped report generation system by data received from machinesPrototyping with Matlab/OctaveProgramming CReporting in wikiMain tasks: setting goals, research and optimization.Octave/MATLAB, Python, R, C, git.

Testing and supporting warehouse management system (Solvo.WMS).Participation in integration.