Oleksii Sadovyi

This service is designed to connect customers with sales and support representatives for various big B2C desktop and mobile products with over 10 million users that handle around 50,000 simultaneous connections per app instance.

The system included the following:
• Chatbots with advanced scenario support
• Suggestion service for agents
• Real-time reporting
• Shift-line management dashboard
• Unique, hassle-free CRM integration
• Comprehensive UI that enables handling tens of chat sessions per agent in parallel

Role:
I led a team of seven engineers, including back- and front-end developers, QA engineers, and NLP specialists.

My responsibilities included:
• Technical and people leadership—mentoring, hiring, and onboarding new members
• Scrum process facilitation
• Development and design of the architecture with other senior team members
• Collaboration with product managers and other stakeholders on gathering requirements
• Engagement with customers to discover pain points
• Suggest features to improve the effectiveness and business metrics, such as ART, AHT, utilization, dollar per chat, number of automatic sales, and so on
• Program some of the most challenging back-end parts of the system personally

A system for gathering insights on user behavior and application usage for multiple platform products spanning desktop, mobile, and web. It included client SDKs for Windows, macOS, iOS, Android, and the web, which allowed the gathering of interactions with any UI element without additional work from the application developer. This allowed rapid product iterations and lessened the last-minute input or work of product managers, UX specialists, and marketers.

The system included reporting the product's lifetime metrics, real-time usage of features, funnel completion, conversion, and many others.

Role:
I joined the team as a senior developer and was promoted to a lead role in around six months.

My responsibilities included:
• Back-end development
• Tech and people leadership
• Collaboration with stakeholders on the backlog, requirements, and features

Scrapy Cloud is a battle-tested cloud platform for running web crawlers, e.g., spiders (PaaS). Your spiders run in the cloud and scale on-demand from thousands to billions of pages. Think of it as a Heroku for web crawling. You can run, monitor, scale, and control crawlers with an easy-to-use web interface.

Role: Senior Developer

My responsibilities included:
• Development of various platform features
• Bug fixes
• Support of analytic systems to display massive metrics
• Implementation of a dozen of spiders for gathering and structuring irregular data (consulting services)

NVDA allows blind and visually impaired people to access and interact with the Windows operating system and many third-party applications. It is a big open source project with a diverse and global user base, backed by such names as Adobe, Yahoo, Google, Microsoft, and the Mozilla Foundation.

Role: Volunteer Developer

My responsibilities included:
• Participation in the design and core development of the project
• Enhancements and bug fixes reported by users
• Implementation of especially low-level parts of the system in C++, including API hooking and DLL injection mechanisms
• Tight collaborative work with third-party developers for product integrations

A Go-based service to extract transactional and other data in real-time from one of the emerging blockchain projects in the field of NFT.

I was the only project developer responsible for the full lifecycle—from gathering requirements to deploying the final working product in the cloud.