Oleksiy S., AI/ML and Infrastructure Engineer
B2 (Upper-Intermediate) English
Senior (5-10 years)
Kyiv,
Ukraine
UTC+02:00
Summary
- 10+ years in AI/ML & Data Science, high-performance systems, 10+ years in DevOps and 5+ years in MLOps;
- Expertise in Python, Asyncio, Aiohttp, Redis, PostgreSQL, Neo4j, ElasticSearch, and cloud platforms (AWS, GCP, Azure);
- Experience with high-load environments, Redis queues, custom assemblies, and data isolation in production-ready systems;
- Skilled in Active Directory integrations, NLP, similarity engines, and AI-driven architectures, with focus on context engineering, summarization, and agentic RAG pipelines (LlamaIndex, Quadrant, IntentRouter);
- Experienced with both text and voice AI models (speaker identification, speech-to-text) and ontology-driven algorithms (PCA, classifiers, semantic understanding from scratch);
- Knowledge of AWS services (S3, EC2, Fargate, EKS, Bedrock pipelines), Kubernetes, CI/CD automation, and cloud migrations (AWS to GCP);
- Passion for NLP, AI, and similarity engines, with preference for applied AI/ML approaches over purely statistical methods;
- Experienced leadership in R&D and engineering management, delivering production-ready AI/ML solutions in defense, search, and semantic platforms.
Main Skills
Security
AI & Machine Learning
Programming Languages
Python Libraries and Tools
Python Frameworks
UI Frameworks, Libraries, and Browsers
Data Analysis and Visualization Technologies
Databases & Management Systems / ORM
Cloud Platforms, Services & Computing
Amazon Web Services
Azure Cloud Services
Deployment, CI/CD & Administration
Collaboration, Task & Issue Tracking
Message/Queue/Task Brokers
Logging and Monitoring
Virtualization, Containers and Orchestration
Operating Systems
Platforms
QA, Test Automation, Security
Methodologies, Paradigms and Patterns
Web/App Servers, Middleware
Hosting, Control Panels
Other Technical Skills
Work Experience
Head of R&D, NDA (Defense Technologies)
Duration: Feb. 2023 - May 2025
Summary: Established and led the R&D department focused on developing military technology solutions. Specialized in digital signal processing, ML-based analysis, and computer vision integrated with hardware systems.
Key Responsibilities:
- Built and managed the R&D department from the ground up;
- Developed production-ready solutions for signal processing and computer vision;
- Implemented robust data isolation strategies and optimized high-load ML pipelines for real-time analysis;
- Ensured scalability and precision of systems for battlefield deployment.
Result: Delivered robust and stable solutions successfully applied in military contexts.
Technologies: Machine Learning, Computer Vision, Signal Processing, Python, Hardware Integration.
Chief Engineering Officer, Ocean.io
Duration: Jun. 2016 - Nov. 2022
Summary: Directed engineering teams and product development for a global semantic search engine platform. Oversaw AI-driven solutions, technical strategy, and business-aligned engineering.
Key Responsibilities:
- Led multiple engineering teams across product lifecycle;
- Defined internal and business requirements;
- Supervised AI development and hands-on system architecture;
- Designed and implemented asynchronous codebases and a semantic web search engine from scratch;
- Built custom high-load assemblies with Redis queues, optimized data isolation, and integrated Active Directory authentication;
- Drove AWS infrastructure adoption and later migration to GCP.
Result: Created a unique SaaS product attracting European investment and wide user adoption.
Technologies: Python, Asyncio, Aiohttp, Redis, Kafka, PostgreSQL, Elasticsearch, Neo4j, AWS (S3, EC2, Fargate, EKS, ElasticSearch, Bedrock pipelines), GCP migration.
Core Engineer (Python), YAGA Inc.
Duration: Sep. 2015 - May 2016
Summary: Contributed to the development of a high-load mobile video messenger.
Key Responsibilities:
- Developed core application features under strict deadlines;
- Improved project performance and functionality.
Result: Successful release with all essential features in a short timeframe.
Technologies: Python, High-load Systems, Messaging Platforms.
Engineering Team Lead, CloneFish (EvoPlay, Gambling Platform)
Duration: Oct. 2014 - Aug. 2015
Summary: Managed development team for a high-load gambling platform, ensuring infrastructure stability and performance.
Key Responsibilities:
- Led engineering team and optimized workflows;
- Implemented infrastructure improvements and platform refactoring;
- Balanced team rotation and budget efficiency.
Result: Achieved platform stability and delivered a new core engine for company products.
Technologies: Python, High-Load Platforms, and Infrastructure Optimization.
CIO, MacHOUSE / VisionHOUSE (Media Solutions)
Duration: May 2012 - Oct. 2014
Summary: Directed IT strategy and infrastructure for a large AV integration and media solutions company.
Key Responsibilities:
- Led IT management and developer teams;
- Created development processes and guidelines;
- Oversaw infrastructure and process optimization.
Result: Delivered stable infrastructure and integration solutions for TV industry projects.
Technologies: IT Strategy, Infrastructure Management, Media Integration.
Engineering Manager, Bolid Ukraine (Security R&D)
Duration: Aug. 2011 - May 2012
Summary: Managed development of scalable security systems with GPS monitoring solutions.
Key Responsibilities:
- Oversaw project management and IT strategy;
- Led a small R&D team to develop monitoring systems;
- Applied ontology-driven algorithms (semantic understanding, PCA, classifiers) to enhance monitoring capabilities.
Result: Released monitoring system for transport infrastructure.
Technologies: GPS Monitoring, Scalable Security Systems, Ontology-based ML.
Technical Engineer, Legion Security Engineering
Duration: Jan. 2009 - Jul. 2011
Summary: Developed and integrated security systems software for hardware controllers.
Key Responsibilities:
- Designed and coded software for various security controllers;
- Integrated hardware and system-level solutions.
Result: Released the remote radio access controller as a product.
Technologies: Embedded Systems, Security Software Development.
Integration System Specialist, Makrocap Development (Property Management)
Duration: May 2006 - Nov. 2008
Summary: Implemented IT security and ERP integrations for property management solutions.
Key Responsibilities:
- Integrated ERP, billing, and security systems;
- Supported IT infrastructure optimization.
Result: Optimized business processes and deployed secure IT integrations.
Technologies: ERP Systems, Billing, Security Integrations.
Education
- Engineer and Analyst of Computer Systems, Specialized Computer Systems, NTU KHPI (2010-2011)
- Bachelor, Computer Systems and Network Computer Engineering (2005-2009),
Hobbies
- Free ride mountain skiing
- Gym, swimming, wakeboarding
- Professional photo
- Classical, electric guitars, digital and vinyl music collecting, djing