Summary
Overview
Work History
Education
Skills
Websites
Training
Timeline
Generic

Pavlo Mashchak

Senior Software Engineer, Ruby On Rails | Team Lead
Orlando,FL

Summary

Experienced Backend Developer and Team Lead

15+ years with Ruby on Rails, micro services, and API development.

Proficient in DevOps (AWS, Docker, Kafka, Linux), CI/CD automation,

Linux infrastructure, and performance audit, optimization.

Skilled project manager experienced in collaborating with stakeholders and analysts.

Background includes ERP integration, ETL pipelines, data transformation/scraping.

Overview

20
20
years of professional experience
5
5
years of post-secondary education

Work History

Senior Software Engineer | Team Lead

Atkins & Pearce
Orlando, FL
07.2022 - 07.2025
  • Company Overview: https://atkinsandpearce.com/
  • Integrated DataDog monitoring for Sidekiq processing, Rails, UI performance metrics
  • Reorganized CI deployment process using Git flows
  • Linux server provision changes using Ansible
  • Improved Docker containers performance customization
  • Supervising team of 4 developers, managing release cycle on development environments.
  • Troubleshooted data inconsistencies, slow performance, deployment issues on production systems.
  • Deployed, released applications using Heroku.
  • Deployed Kafka cluster to stream to Microsoft SQL server
  • Optimized Ruby on Rails applications, document processing, DB data ingestion
  • Architected applications to convert ERP documents to PDF
  • Developed TypeScript, Ruby on Rails application for metrics to show manufacturing flows.
  • Environment: Ruby on Rails 7.0, Rspec, Azure, Docker, Microsoft SQL Server, Kafka, Sidekiq

Senior Software Engineer

WebIntegrated LLC
Orlando, Florida
06.2022 - 10.2022
  • Company Overview: (contractor)
  • Created church members portal web application
  • Environment: Ruby on Rails 6.0, Vanila.js

Senior Software Engineer

Teladoc
Atlanta, GA
04.2022 - 05.2022
  • Company Overview: https://www.teladochealth.com/
  • Created rendering engine to build cross platform screens using rails API
  • Environment: Ruby on Rails 6.0, Sinatra, Rspec, Docker, React.js, iOS

Senior Software Engineer

Nucleus
Atlanta (remote), GA
09.2021 - 03.2022
  • Company Overview: https://nucleushealthcare.com/
  • Rebuilt backend entities to support multiproduct, multi location DB structure and API calls
  • Refactored and integrated Shoulda, Factories, Test coverage tools
  • Optimized statistic pages load time, SQL queries
  • Environment: Ruby on Rails 5.2, MiniTest, PostgreSQL, Docker

Senior Software Engineer | Ruby on Rails

Agari
Atlanta, GA
03.2021 - 08.2021
  • Company Overview: http://agari.com
  • Refactored Ember views
  • Code review, Rspec refactoring
  • Extracted portion of email corrections into microservices (Python)
  • Environment: Ruby on Rails 3.2, Python, FastAPI, Ember.js, PostgreSQL, Docker

Senior Software Engineer | Ruby | PHP

Forte Consulting Group
12.2018 - 02.2021
  • Company Overview: http://fortegrp.com
  • Projects: Litera - Litera.com Document processing system for legal transactions, Ezlinks.com - web application for golf courses booking.
  • Built a chain of asynchronous handlers to export/upload data dumps to S3
  • Optimized SQL queries for the structured pages
  • Coordinated features development with product owners and developers.
  • Built access restriction module to manage permissions.
  • Integrated jQuery plugins for sorting, drag-and-drop, dynamic selection.
  • Refactored old admin forms from jQuery to Reactjs
  • Environment: Ruby on Rails, PHP, jQuery, React.js, Rspec, Capybara, MySQL, Git, Vagrant

Senior Software Engineer (contract)

IQVIA - DrugDev.com
Chicago (remote), Illinois
02.2020 - 05.2020
  • Refactoring of ActiveRecord scopes and data storing logic.
  • Building new pages using Ember addons and components.
  • Code review, mentoring junior developers.
  • Environment: Ruby on Rails 5.1, Rspec, EmberJS, MySQL, Git, Docker, Ansible

Senior Software Engineer

Apptopia
Kyiv, Ukraine
08.2016 - 11.2018
  • Company Overview: http://apptopia.com/
  • Apptopia.com - platform monitor competitors data for mobile applications.
  • Created ETL scrapers and background jobs.
  • Build Ruby command line tools to export/import data into Cassandra.
  • Created new API endpoints for React pages.
  • Migrated Backbone/Slim views to React components.
  • Integrated JavaScript Aws-SDK into Chrome plugin.
  • Built Mixpanel JavaScript event tracker, to track user/server events.
  • Environment: Ruby on Rails 5, JavaScript, BackBone, ReactJS, AWS, Sidekick, Cassandra, Git

Senior Ruby on Rails developer, Consultant

Forte Consulting Group
04.2014 - 07.2016
  • Company Overview: http://fortegrp.com/
  • Software Consultant – delivering services to Comcast
  • Projects: 02/2016 – 07/2016 Comcast – Home Security
  • Home security application for video surveillance smart home monitoring.
  • Build analytical dashboards for performance/error metrics (Splunk)
  • Analyzed and changed application log events to track metrics for API call duration, failure rates.
  • Integrated statistic into Splunk dashboards from projects like Voice Command menu, Mobile Applications
  • Environment: Java 1.7, Splunk, WebRTC

Senior Software Engineer

Comcast – Xfinitygames.com
Philadelphia, PA
09.2015 - 02.2016
  • Game launch application used to launch security setting and game controllers.
  • Refactoring, improvements, code review.
  • Integrated analytical engine Adobe – Omniture.
  • Adapted HTTP client with native Java extensions which increased performance in 15%.
  • Created retry adapter for HTTP calls which reduced amount of failures.
  • Environment: Ruby on Rails 4.1, JavaScript, Rspec, Splunk, Adobe-Omniture

Ruby on Rails Developer

AT&T - Api Matrix
Dallas, TX
06.2014 - 08.2015
  • Company Overview: http://developer.att.com/
  • Application to get OAuth credential for AT&T APIs.
  • Built security restriction for launching new apps in the system.
  • Creating routes in Apache-ServiceMix to transfer and manage calls between services.
  • Application migration, refactoring and test coverage optimization
  • Deployments to staging servers, manual QA and verification
  • Leading development with offshore resources, training new developers into project.
  • Environment: Ruby on Rails 3.2, 4.2, Apache-ServiceMix, jQuery, CoffeScript, MySQL, Oracle, Jenkins, MiniTest, Capybara, Git

Senior Ruby on Rails Developer

Helios Technologies LTD
Kyiv, Ukraine
09.2011 - 04.2012
  • Company Overview: http://heliostech.fr/
  • Deployed code to remote servers using Jenkins and Capistrano.
  • Created tests using Rspec, TestUnit, Capybara, Cucumber frameworks.
  • Development JSON/REST full APIs using Ruby on Rails, Sinatra frameworks
  • Environment: Ruby on Rails 3.2, jQuery, CoffeScript, MongoDB, MySQL, Elasticsearch, Jenkins, Capistrano, Rspec, Capybara, Rescue, Redis, Git
  • Search Engine system that performs instant indexing and full text search. Implementations of BackBone core classes, and extended features.
  • Created BackBone core classes and integrated with new API and
  • documentation generation.
  • Developed gem to index data from Unix cmd.
  • Created data jobs with Rescue and Elasticsearch processing to create indexes.
  • E-commerce service build on top of OAuth Server.
  • Integrated order processing with SOAP, REST full API calls, and data encryption.
  • Implemented bank provider API to process orders.
  • Environment: Ruby on Rails 3.1, Rescue, MySQL, Elasticsearch, MongoDB, BackBone.js, Git

Ruby on Rails Developer

GlobalLogic
Lviv, Ukraine
05.2010 - 08.2011
  • Company Overview: http://http://www.globallogic.com.ua/en/
  • Created RESTfull APIs, with Ruby on Rails framework
  • Created migration scripts to upgrade from Ruby on Rails 1.2 version to Ruby on Rails 3.0.
  • Deployed web applications using CruiseControl continuous integration system.
  • Environment: Ruby on Rails 1.2, 2.3, 3.0, Sinatra, PostgreSQL, ActiveResource, XML-RPC, Rspec, Prototype, jQuery, CruiseControl, Redis, Memcached

Junior Ruby on Rails Developer

CoreValue
Lviv, Ukraine
03.2010 - 06.2010
  • Company Overview: http://www.corevalue.net
  • Recyclebank (http://www.recyclebank.com) CRM, CMS, system.
  • Build server side and run project on DEV/QA servers.
  • Configuration Apache, MySQL, access to GIT repositories, Joomla, CAS server.
  • Environment: Ruby on Rails, Prototype, Centos, Ubuntu, Debian, MySQL, Apache2, Mongrels, Passenger, JBoss, Joomla

Implementation Engineer

N-ix LLC
Lviv, Ukraine
04.2008 - 05.2009
  • Company Overview: http://www.n-ix.com
  • Built configuration for documents streamline processing using StreamServe..
  • Used Microsoft SQL and MS Access server as database storages.
  • Technologies: MS SQL server, MS Access, StreamServe modules, XML, SAP-RDI

System Engineer

State Inspection in Lviv Region
Lviv, Ukraine
04.2007 - 03.2008
  • Company Overview: http://sta.gov.ua
  • Support & installation of Tax reporting software.
  • Control of data consistency and encryption for electronic tax reports.
  • Environment: MS 2003 Server, ActiveDirectory, Outlook, XML

Network Administrator

Research Center of Liquid Fertilizers
Lviv, Ukraine
09.2005 - 04.2006
  • Created, architecture and built Ethernet and telephone networks with server infrastructure.
  • Supported software and databases for tax reports.
  • Environment: Network server and Ethernet equipment, phone stations.

Education

Bachelor degree - Computer-aided systems, automatics and control

National University “Lviv Polytechnic”
09.1999 - 06.2003

Masters in Computer Automation Systems - Control and automation systems

National University “Lviv Polytechnic”
Lviv Ukraine
07.2003 - 12.2004

Skills

  • Programming languages: Ruby, Python, PHP, Java Core, JavaScript, Type Script

  • Frameworks: Ruby on Rails, Django, Elixir-Phoenix

  • Client Side: Reactjs, jQuery, BackBone, Emberjs, CoffeeScript

  • Testing Frameworks: Rspec, Test Unit, Mocha, Capybara, Cucumber, Selenium

  • Platform: AWS (S3, SQS, SNS), Azure, Heroku

  • RDBMS: MySQL, PostgreSQL, MSSQL Server

  • NoSQL: MongoDB, Elasticsearch, Redis, Kafka

Training

  • Training for software developers SoftServe (http://softserve.ua/en/university/it-academy/ )
  • Course: Development, design, architecture of modern software systems based on object oriented languages.
  • Created Web server used Ruby. Developing pool of threads, MIME type handlers.
  • Developed client interface using JavaScript, HTML, CSS, jQuery
  • Technologies: Ruby, Ruby on Rails 2.0, MySQL, JavaScript, HTML, CSS, jQuery

Timeline

Senior Software Engineer | Team Lead

Atkins & Pearce
07.2022 - 07.2025

Senior Software Engineer

WebIntegrated LLC
06.2022 - 10.2022

Senior Software Engineer

Teladoc
04.2022 - 05.2022

Senior Software Engineer

Nucleus
09.2021 - 03.2022

Senior Software Engineer | Ruby on Rails

Agari
03.2021 - 08.2021

Senior Software Engineer (contract)

IQVIA - DrugDev.com
02.2020 - 05.2020

Senior Software Engineer | Ruby | PHP

Forte Consulting Group
12.2018 - 02.2021

Senior Software Engineer

Apptopia
08.2016 - 11.2018

Senior Software Engineer

Comcast – Xfinitygames.com
09.2015 - 02.2016

Ruby on Rails Developer

AT&T - Api Matrix
06.2014 - 08.2015

Senior Ruby on Rails developer, Consultant

Forte Consulting Group
04.2014 - 07.2016

Senior Ruby on Rails Developer

Helios Technologies LTD
09.2011 - 04.2012

Ruby on Rails Developer

GlobalLogic
05.2010 - 08.2011

Junior Ruby on Rails Developer

CoreValue
03.2010 - 06.2010

Implementation Engineer

N-ix LLC
04.2008 - 05.2009

System Engineer

State Inspection in Lviv Region
04.2007 - 03.2008

Network Administrator

Research Center of Liquid Fertilizers
09.2005 - 04.2006

Masters in Computer Automation Systems - Control and automation systems

National University “Lviv Polytechnic”
07.2003 - 12.2004

Bachelor degree - Computer-aided systems, automatics and control

National University “Lviv Polytechnic”
09.1999 - 06.2003

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Pavlo MashchakSenior Software Engineer, Ruby On Rails | Team Lead
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