Ihor Tykhonenko
Senior Software Engineer @Varsity Tutors, a Nerdy Company
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WORK HISTORY
Senior Software Engineer @Varsity Tutors, a Nerdy Company
NB, CA
Responsibilities: • Development of key features and components of the Varsity Tutors platform. • Collaborate with cross-functional teams to design and implement scalable solutions. • Contribute to architectural decisions and code reviews to ensure a high-quality codebase. • Implement CI/CD pipelines for automated testing and deployment processes. • Work on a highly loaded product, being on-call to handle any critical issues or incidents. • Utilize monitoring tools such as New Relic and OpsGenie to detect and respond to system alerts and performance issues promptly. • Configure and optimize Sidekiq Enterprise for background job processing. • Set up Kubernetes clusters and implement K8S horizontal autoscaling to ensure efficient resource management and high availability. • Utilize Terraform for infrastructure as code to automate the deployment and management of cloud resources. • Resolve performance issues with MySQL databases on highly loaded systems serving millions of real users worldwide. • Collaborate with the operations team to fine-tune system configurations and optimize database queries for improved performance and scalability.
EDUCATION
Kharkiv Petro Vasylenko National Technical University of Agriculture
Master’s Degree
SKILLS
ABOUT IHOR TYKHONENKO
Full-stack software engineer with 10+ years of experience building secure, scalable, and high-performance applications across FinTech, EdTech, and E-commerce domains.Expert in Ruby on Rails, Sidekiq, Kafka, GraphQL, and React, with deep experience in cloud infrastructure, CI/CD automation, and event-driven architectures. Passionate about AI engineering, currently building intelligent agents using Python and tools such as OpenAI Agents SDK, CrewAI, LangGraph, ChromaDB, and LangSmith for monitoring. I enjoy experimenting with advanced LLM frameworks and multi-agent coordination — Claude Code is currently my favorite AI coding assistant.At Varsity Tutors (a Nerdy Company), I lead backend and full-stack initiatives for a large-scale EdTech platform serving millions of students, focusing on performance optimization, observability, and automation using Ruby on Rails, React, Kubernetes, Terraform, and AWS.I also built BadmintonHub.ca an AI-powered badminton content and e-commerce platform featuring intelligent racket recommendations and Canadian club listings, integrating OpenAI APIs and modern cloud infrastructure.Previously, I developed FinTech automation microservices for North American banks and enterprise-grade healthcare systems, gaining deep expertise in API design, CI/CD pipelines, and compliance-driven architectures.I enjoy simplifying complex systems, mentoring peers, and delivering clean, maintainable solutions built on SOLID, DRY, KISS, and YAGNI principles.Blog: tihandev.comOpen Source: github.com/itikhonenko/openai-clientContact: t••••••••@gmail.com
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