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Andrew O.
Last update: 19 Jun 2018
ARCHITECT /team lead
Senior Go developer/Architect with a decent background in building microservices.
10+ years of commercial software development experience. Strong experience in Golang, Java, C#. Capable of analyzing, designing of complex systems and problem-solving.
All rates are indicative, annual rate includes 15% discount
15% discount on yearly basis
Usually responds within 1 hour
GMT West Europe
Lviv/Ukraine

Works

EXPERIENCE

Industry Experience

Advertising & Marketing, Information services & Technologies, Banking & Finance, Entertainment & Games, Healthcare & Medicine, Electronics & Equipment

Product Experience

cloud storage services, IoT Application, Online advertisement application, development of browser extensions, Desktop Application, API, VPN Client, enterprise document management system, Payment processor, Online casino, Cloud System

PORTFOLIO HIGHLIGHTS

IoT project

Senior Software Engineer

Design of architecture for system modules ● Business logic implementation ● Performance monitoring and improvement ● Devops ● Technical documentation development Reimplemented sensor data logging in order to save cost of data storage. Implemented a way of IoT data analysis and visualization with AWS Kinesis, Athena and Amazon Quicksight. Performed root cause analysis of Lambda failures, provided an updated design that prevented service outages and loss of profit.

​ Cloud Service for IoT devices

Technologies Stack:

AWS Node.js PostgreSQL Python Elasticsearch Golang Nginx Docker DynamoDB AWS SDK

Product:

cloud storage services, IoT Application

Flow Stack

Senior Software Engineer

● Design of architecture consulting, product stabilization consulting ● Business logic implementation ● Performance improvement ● Coding standards and best practices ● Devops ● Technical documentation development

Customizable online quiz calendar application with website and facebook integration features

Technologies Stack:

AWS JavaScript Python React.js Golang

Industry:

Advertising & Marketing

Product:

Online advertisement application

Windscribe

Senior Software Architect/ Engineer

● Solution architecture development ● Leading team ● Mobile software development and testing ● Performance monitoring and improvement ● Coding standards and best practices ● Implemented payments integration ● Daily status meetings, demo and retrospective meetings according to SCRUM

Windscribe a desktop application and a browser extension that work together to block ads, social networks, and trackers, as well as restoring access to blocked content and helping users safeguard their privacy online. Users get access to geo-restricted content, share privacy with others and reduce exposure to tracking and surveillance. The main challenge consisted of creating a full VPN client as well as an ad and tracker blocker and a secure link for the browser extension.

Technologies Stack:

Android SDK Java RxJava Microservices

Industry:

Information services & Technologies

Product:

development of browser extensions, Desktop Application, API, VPN Client

Works:

Crown Resorts

Technical Lead (Architect)

● Developing architecture of software subprojects ● Data analysis ● Analysis of predecessor system ● Product performance monitoring and improvement ● Implemented high availability and failover ● Leading team ● Implemented backend performance monitoring with request tracking and outage notification ● Performed root cause analysis of failures, prevented service outages and loss of profit ● Mitigated and refactored microservices which became bottlenecks after rapid application growth

​ Crown Connect 2, enterprise management system

Technologies Stack:

Azure C# Java .NET Oracle RabbitMQ MSSQL Microservices

Industry:

Information services & Technologies

Product:

enterprise document management system

Crown Connect

Technical Lead (Architect)

● Design of architecture and database schema ● Design of data flows ● Leading team, distributing tasks to the team ● Performing communication to ● Business logic implementation ● Technical documentation development

Silk Admin, 3rd party data processing, recognition, visualizing and editing portal

Technologies Stack:

AWS JavaScript Golang MSSQL Angular 4

Industry:

Information services & Technologies

Kalixa

Technical Lead

● Development of payment service ● Technical documentation development ● Performance monitoring and improvement ● Business logic implementation ● Devops ● Implemented integration with MasterCard payment system ● Reimplemented 3rd party transaction batches parsing functionality that enabled team to significantly reduce new payment methods implementation time ● Mitigated and refactored microservices which became bottlenecks after separate payment method growth

​ Payment processing system and payment service provider

Technologies Stack:

C# CSS JavaScript .NET MSSQL Microservices

Industry:

Banking & Finance

Product:

Payment processor

888 Holdings

Senior Software Architect

● Architecture development of software subprojects ● Business logic implementation ● Creating and maintaining of required technical documentation ● Mentoring of new developers ● Coding standards and best practices ● Coordinated teamwork and controlled working results

CasBO, casino back office server and client application

Technologies Stack:

C# HTML5 Java .NET Silverlight MSSQL

Industry:

Entertainment & Games

Product:

Online casino

​ NuanceFX

Senior Software Engineer

● Development of a document management and distribution subsystem ● Managed bug fixing process ● Performing of analysis for existing technical decisions ● Worked on optimization of subproject development

Enterprise level solution for documentation recognition, transcribing and distribution for healthcare industry

Technologies Stack:

Hibernate Java EE Oracle database

Industry:

Information services & Technologies, Healthcare & Medicine

Product:

enterprise document management system

Pet Project - smart office

Software Architect/ Engineer, Team Lead

● Design of architecture ● UI and business logic implementation ● MCU firmware implementation ● Technical documentation development ● Leading team

Cloud-based Smart Office automation solution providing collect, monitor and automate features like office lighting, heating, air-conditioning and also security features like authentication, presence monitoring

Technologies Stack:

AngularJS Arduino AWS C JavaScript Lua PostgreSQL Python Golang DynamoDB

Industry:

Information services & Technologies

Product:

Cloud System, IoT Application

Pet project - Drone

​ Software Architect/ Engineer, Team Lead

● Design of architecture ● Design of hardware ● UI and business logic implementation ● MCU firmware implementation ● Technical documentation development ● Leading team

IoT Drone - autonomous, IoT enabled indoor flying drone project. Autonomous drone with optical flow and sonar-based obstacle avoidance, voice command recognition, able to provide small package delivery, office tours, etc.

Technologies Stack:

AWS C JavaScript Python Angular 4

Industry:

Information services & Technologies, Electronics & Equipment

Product:

IoT Application

EDUCATION

Vinnitsa National Technical University

Engineer's degree, Computer Science

Web & mobile apps dvelopment agency #301

We are a young, ambitious and trusted global technology service company that designs, builds and implements effective software technology solutions, fulfilling the needs of customers’ businesses. We cover all aspects of software product development using the latest technologies and frameworks, and we quickly adjust to our customers’ demands. Our approach combines research, design and development to rapidly solve problems, create and test prototypes and launch a product into the market in an iterative way. We create intelligent applications that connect people, systems, devices and data. ElifTech is a team of continuously evolving technophiles that transform business ideas into valuable high-tech products.

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