Heorhii – Kotlin, Android SDK, Android

A secure enterprise-grade email client built on Microsoft messaging protocols, including EAS, EWS, and Graph API. The solution was designed for high-security environments, serving large organizations such as governmental bodies and major financial institutions. It focused on secure communication, compliance requirements, and reliable integration with enterprise email infrastructures.

• Implemented advanced support for delegated and shared mailboxes and calendars across multiple Microsoft protocols and various email server types;
• Analyzed product and technical requirements, translating them into scalable and secure feature designs;
• Designed and delivered end-to-end functionality, from initial concept through production release;
• Prepared and maintained technical documentation for implemented features;
• Provided ongoing product and customer support, including zero-day issue resolution;
• Applied shift-left testing practices to identify and resolve issues early in the development lifecycle;
• Collaborated closely with the product owner and cross-functional teams to align on scope, priorities, and delivery timelines.

A document processing and storage platform designed to securely handle, store, and manage digital documents. The system enabled efficient ingestion, indexing, and retrieval of files while ensuring data integrity and compliance with enterprise security standards. It supported various document formats and provided scalable storage solutions for organizational use.

• Led product design and managed end-to-end project lifecycle for the development of an enterprise document service;
• Supervised and coordinated a team of 10 engineers, setting priorities and ensuring timely delivery;
• Developed a specialized service for producing, processing, and securely storing documents;
• Oversaw architecture, implementation, and deployment of the system, ensuring scalability and reliability;
• Collaborated with stakeholders to align product requirements with business goals;
• Maintained documentation and provided guidance on best practices for the engineering team.

An automotive software project focused on porting Android Open Source Project (AOSP) to custom hardware provided by a Tier 1 supplier. The work covered Android OS versions 8.1 through 10.0 and ensured full compliance with Google’s Device Compatibility Certification. The resulting platform was deployed across multiple major OEM vehicles, enabling enhanced in-car software functionality.

• Completed Compatibility Test Suite (CTS) and Vendor Test Suite (VTS) for Android devices following AOSP porting;
• Performed multilayer debugging across OS, middleware, and hardware layers to identify and resolve issues;
• Implemented Hardware Abstraction Layer (HAL) components to support device-specific functionality;
• Specialized in GNSS integration, including configuration and testing of Ublox devices;
• Applied expertise in NMEA protocols for accurate location data processing and device communication;
• Ensured reliable GNSS performance within automotive environments

Development of native cross-platform security solutions for Android and Tizen, focused on establishing secure connections and enabling protected data transfer using proprietary Trusted Execution Environment (TEE) technology.

• Developed and maintained a secure library utilized across wearable devices;
• Delivered new features from design to implementation and ensured full functionality;
• Conducted thorough product testing and validation;
• Collaborated closely within a small, efficient team to ensure high-quality releases.