2 April

R :: R Shiny Developer, Ph.D.

Remote work, Ukraine · $1500 · More than 10 years of experience · Advanced/Fluent

I make R and R Shiny applications for business and marketing. You can validate a business hypothesis and test application design with minimum resources spendings. The development process includes exploratory data analysis and predictive modeling. Project assessment is based on existing data samples and tech specifications. The R Shiny application will be well-documented and can be used for full-stack web development where I can also work as an R or Python developer. Some business and marketing tasks I worked with: - customers analytics (segmentation, cohorts, churn, ltv) - modeling trading strategies and marketing activities - predictions dates and prices of the next orders - key performance indicators calculations - products market basket analysis. The main R packages I worked with: - data analysis & processing (data.table, tidyverse, lubridate) - predictive modeling (caret, tidymodels, dplyr, parsnip, broom) - tree-based models (ranger, randomForest, xgboost, catboost) - time-series models (forecast, prohphet, xts, zoo, tidyverts, fpp2) - quantitative financial modeling & trading (quantmod, quantstrat) - reports & documentation (RMarkdown, bookdown, roxygen, latex) - SQL and NoSQL databases (RMySQL, RODBC, bigrquery, redux) - web dashboards (shiny, shinyjs, shiny.i18, shinydashboard, DT) - deep-learning (keras, tensorflow, glm, e1071, MAAS, mlflow) - cloud and data storages (feather, openxlsx, jsonlite, aws.s3) - big data platforms (sparklyr, SparkR, h2o, databricks) - performance optimization (Rcpp, RcppParallel) - visualization (ggplot2, leaflet, plotly, ggmaps) - social network analysis (network, igraph, sna) - integration with CRM systems (salesforcer) - social media (googleAnalyticsR, rtweet) - parallel processing (foreach, doParallel) - R packages development (devtools) - OOP code programming (R6) - web API design (plumber) - code testing (testthat) - NLP (tidytext, httr)

R, Data Science, R Shiny, SQL, Machine Learning, Predictive analytics, Keras, Data Analisys, Churn prediction

Top Rated on Upwork


29 March

Senior Back-End Developer / Full Stack Developer

Amsterdam · $6000 · More than 10 years of experience · Advanced/Fluent

14 years of hands-on software development. Hands-on experience in building software, full development life cycle: gathering requirements, design, implementation, testing, documenting, deployment, maintenance and improvement of software. Fundamental knowledge of Computer Science. PhD. equivalent and academic experience. Knowledge of C#, .NET Framework, ASP.NET MVC, Multithreading, RESTful web services (Web API), Entity Framework Core, Git. Knowledge of web technologies: HTML5/CSS/JavaScript, AJAX, jQuery, KnockoutJs. Knowledge of database technologies and SQL language, mostly worked with Microsoft SQL Server (T-SQL extension, sophisticated stored procedures, cursors). Experience in distributed parallel information processing (Amazon cloud/AWS/EC2/AMI, RabbitMQ for transport). Experience in sophisticated data processing on the back-end (Natural language processing, Information extraction). Experience in cross-platform development with ASP.NET Core (Windows & Linux system). "NoSQL" databases experience (ElasticSearch, MongoDB). Familiar with design patterns: Factory Method, Template Method, Command, IOC / DI and others. Familiar with High Availability, Load Balancing, and Redundancy problems, CAP theorem. Practical knowledge of Agile, Scrum, XP techniques, such as Code Review. Little experience with different other tools like Python, Node.js, AngularJs, Angular 6 (TypeScript). Familiar with trading concepts, stock market, futures & options. Experience in large/distributed team work, independent work, remote work.

.NET, .NET Core, Algorithms, ASP.NET, asp.net mvc, C#, Microsoft SQL Server, OOP, RabbitMQ, REST API, SQL, T-SQL, WebApi, WinForms, AWS, JavaScript, jQuery, Knockout.js, Web crawlers, ElasticSearch, MongoDB

Working in Amsterdam, Netherlands. Open to offers in the EU. Focused more on the Back-End development, can do occasional Front-End development. The desired salary is net.


29 March

Senior Oracle DBA

Remote job, Milan, London, Prague · $3000 · 10 years of experience · Advanced/Fluent

- Oracle databases: 12c, 11G, 10G, 9i - Tuning and monitoring tools: Oracle Cloud Control 12c, AWR, Statspack, Nagios, SQL Tuning and Access Advisors - Backup tools: RMAN, DataPump, imp/exp - Linux: Red Hat 7.0, Oracle Enterprise Linux 6.0, CentOS 6.0 - UNIX: HP-UX, Solaris 10.0, AIX - High availability: RAC, DataGuard, GoldenGate, dbVisit Replicate - ETL tools: Oracle SQL Loader, Informatica, MSSIS (Microsoft SQL Server Integration Services) - Scripts: bash, VBScript - PL/SQL, SQL code review and bug fixing

Database tuning and optimizing, DataPump, Oracle 11g, Oracle 12c, SQL, ASH, AWR, Database migration, MSIS, MSSQL 2008, Oracle Enterprise Manager 12c Cloud Cont, Oracle Enterpsise Linux 6.0, PL/SQL, RMAN, T-SQL, Amazon RDS on AWS, bash, Business Intelligense, DataGuard, DataWarehouse, Firebird, HP-UX, Informatica, MySQL, Oracle Clouds, Postgress, RAC, Reda Hat Linux 4.0, DB2 9.0, Jira, MSSQL 2012, Pefrorce, Redmine, Solaris 11, SVN

Service-oriented Oracle-certified DBA with 10 years of experience performing core database administration and data-support operations across multiple platforms (UNIX, Linux, Windows). Effectively plan, install, configure and optimize the Oracle databases to achieve consistent performance and high availability. Key Contributions: - Decreased the response time of problematic SQL queries in 10 times on Oracle 12c production database and thus saved time for debt collection call-center staff - Dramatically improved monitoring of TopN problematic SQL queries due to implementation of Oracle 12c Cloud Control - Boosted efficiency of Core & Fix Development teams using Oracle 12c SQL Tuning and SQL Access advisors

Looking for Oracle database administrations project with core DBA duties and high availability activities (RMAN, DataGuard). Preferred remote job or relocation to: - Krakow or Warsaw - both in Poland; - Milan, Florence, Genova, Roma - all in Italy; - London (UK) - Prague - Czech Republic


27 March

Lead/Senior Data Analyst (remote/part-time)

Remote work, Ukraine · $2000 · 5 years of experience · Advanced/Fluent

Python (Numpy, Pandas, scikit-learn), R, PySpark, Tableau, SQL, Hadoop, Hive, Impala, MS Office, Redshift, Looker

Python, SQL, Data Science, Machine Learning, pandas, scikit-learn, Deep Learning, NumPy, Jupyter Notebook, Data Labeling, Analysis and research, MS Excel, MySQL, Probability Theory, Data Mining, Matplotlib, Git, Algorithms, English

• Developed two different approaches of unsupervised machine learning on video game players by utilizing biochemistry methods from DNA sequence mining (CM-SPAM) and algorithms from hierarchical (AGNES), density-based (HDBSCAN) and partitioning (KMeans) families of clustering techniques in R and Python • Deployed one of approaches above using Spark, Hive and Impala SQL thereby delivering weekly insights to several stakeholders on completely automated basis via Tableau dashboards and various reports. • Presented other segmentation approach at Machine Learning Innovation Summit 2018 in San Francisco, Data Innovation Summit 2018 in Stockholm and Nordic Games 2018 in Malmö to audiences of 200-600 attendees

I am looking for a part-time remote work with flexible hours in Data Science or Data Engineering / Analysis. I work as a Senior Data Scientist in London and would like to use this one to widen my area of expertise and sharpen my skill set. I have a lot of experience in the Data Science field and very strong communication skills in English (+ Russian/Ukrainian).


26 March

QA Lead

Kyiv · $2700 · More than 10 years of experience · Advanced/Fluent

Hands on experience in people management. Building team from scratch - hiring, education, maintenance, etc. Experience in creating high performing test team. Education and adaptation of new team members, creating education system inside of the project according to CI principles. Deep understanding of business needs and cases, taking part in meetings with business owners in order to set up goals and priorities. Working with UI/UX designers and BA in order to satisfy customer requests and create specifications and manuals. Hands on experience with solving customer problems. Windows based products, desktop enterprise products, TFS, Microsoft SQL Server, manual testing, unit testing, mobile testing, web testing, integration testing, grey box testing, test planning, test design, time management, process management

Manual Testing (QA), Microsoft SQL Server, TFS, REST API, SOAP, XML, JSON, Postman, SQL, MSSQL, Microsoft Azure, Leading teams, Agile

Building high performance test team from scratch. Building distributed test team. Education and mentoring team members from trainee level up to strong middle and senior level. Process management Team management

Opportunity to apply my knowledge an experience.


25 March

MySQL DBA 

Kyiv · $9500 · More than 10 years of experience · Advanced/Fluent

Databases: MySQL (Percona, MariaDB), Mongo, Cassandra, Vertica. CMS: Puppet, Chef, Ansible Cloud: AWS, GCP

MariaDB, MySQL, Percona, SQL, Cassandra, Linux, puppet, Chef, GCP, MongoDB, AWS

- 15+ yeas of experience - administration of multi Terabytes DBs - administration of heavy loaded DBs - great experience in automation - expert in performance tuning

My main focus is on MySQL database administration.


24 March

Oracle/PostgreSQL DBA/Architect 

Remote work, Ukraine · $5500 · More than 10 years of experience · Advanced/Fluent

Linux, Oracle, PL/SQL, PostgreSQL, WebLogic, DWH

Linux, Oracle, PL/SQL, DWH, SQL, ETL, Git, AWS, Azure

Работа в международных компаниях, участие в качестве архитектора и разработчика крупных проектов по построению хранилищ данных, используя технологии Oracle, Power Center, OBIEE, Hyperion, Business Objects. Администрирование и сопровождение финансовых и банковских систем на базе Oracle. Миграция баз в AWS/Azure

Сложные и разнообразные задачи, дружный коллектив, возможности профессионального роста, долгосрочные проекты.


21 March

Business Analyst

Kyiv · $1800 · 6 years of experience · Advanced/Fluent

Have 6 years of professional experience working in Information Technologies (IT) and services industry. Have 2+ years of experience in business analysis, requirement management and rest of the experience in analysis, code development, deployment and maintenance of banking applications. Experience in enterprise software analysis and development in Banking (Finance) domain. Worked in Client facing role with Agile methodology. Technology worked upon : Java, Blueriq, XML, SOAP, Web Services Database: MS-SQL, Oracle, DB2 Development Tools: Eclipse, Blueriq, Endevor, SQL Developer Tools : Quality : SONAR Automation : Jenkins Build : Maven Version Control : SVN Repository Manager : Nexus Service Management : Service Now Security : HP Fortify Knowledge of best SD practices (Agile/Scrum) code design principles

Business Analysis, AGILE/SCRUM, MSSQL, JIRA/Confluence, GIT, User stories , Requirements analysis , BPMN , Business modeling, Analytical Skills, Agile, Scrum, Jira, English, Software Development Life Cycle

• Strong business analysis and requirement management skills • Analytical thinking and problem-solving • Experience in a Client Facing role • Experience to create epics and user stories • Experience with relational databases • Technical education;

Looking for job as middle level Business Analyst. Seeking for work which provides ample opportunities to learn and grow.


17 March

Database Developer / Algo Developer / Financial Engineer

Lviv · $2000 · 7 years of experience · Advanced/Fluent

In my first apprenticeship as a graduate economist and mathematician I had the opportunity to perform activities such as analysis of complex systems and solution‐oriented modelling of processes in a company. During my second apprenticeship as graduate business administrator, I dealt with the stock exchange software Meta Stock and developed algorithms to check the model results. Furthermore I developed sophisticated scripts to support the daily reporting to the management. In my position as software developer in Investment Banking IT I had the opportunity to tackle and implement complex customer requirements for securities trading. In addition, as an Algo‐Developer, I gained valuable experience in the development and support of algorithms for automated trading on European and international stock exchanges. My high mathematical understanding and knowledge of the capital markets provided a very good basis for this. In parallel, I took over the supervision and responsibility for the students and interns working in Investment Banking IT who were involved in sub‐projects.

SQL, Git, Jira, Python, JavaScript, Windows, SVN, Agile, Scrum, Oracle, bash, Data Modeling

Certificate "Trading with Cryptocurrencies" Certificate "MongoDB for Java Developers"

I want to be part of a development team where the development processes are formed from the technical task to the final inspection. Clearly defined goals and tasks. It would be interesting to learn something new. I am open to learning and willing to learn another programming language. That's why I'm looking for a company where I can really learn, develop, introduce new technologies, gain experience and be successful together.


17 March

C#, Database Developer, VB

Remote work, Ukraine · $5500 · More than 10 years of experience · Advanced/Fluent

Over 20 years of software development experience. Solid mathematical background. My goal is to make my customers very happy by fully understanding their need and decomposing it into small manageable problems. I have a lot of experience to build a program from scratch. I'm looking for clients, that seeking for quality. I am skilled in: - C#, .NET, .NET Core, SQL, VB.NET, VB6 - Web API, ASP.NET MVC, ASP.NET MVC Core, LINQ, Entity Framework, MS SQL Server, Chargebee API, ChargeOver API, Selenium WebDriver - OOP, software design and testing, JQuery, Bootstrap, CSS3, HTML5 I prefer to build long term relationships with clients, so I'm looking for long term projects.

asp.net mvc, C#, LINQ, MS SQL Server, SQL, .NET Core, ASP.NET CORE, .Net Core 2, RESTful API

PhD in Mathematical Modeling

Украинским рекрутерам следует указать в сообщении "профиль прочитан", сообщения без этой фразы не рассматриваются.


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