Andrei Tekhtelev
Lead Full-stack Software Developer @Step.Co
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WORK HISTORY
Lead Full-stack Software Developer @Step.Co
Vancouver, BC, CA
React.js Web Application (Authenticated Platform)- Led development of a secure multi-platform fitness app using React.js, TypeScript, and JavaScript- Architected and optimized GraphQL queries and DynamoDB schema (LSIs/GSIs), improving query performance by 90%- Built Stripe integration and a referral service, boosting coach onboarding and user acquisition- Integrated Customer.io and Mixpanel for analytics and targeted messaging, increasing guest-to-member conversion by 20%. Next.js SEO-Optimized Public Web Application- Developed a public-facing Next.js app optimized for SEO and user acquisition- Implemented analytics and attribution tracking with Pinpoint, AppsFlyer, Branch.io, Mixpanel, and Customer.io- Enhanced marketing with A/B testing, Google Analytics, and Google Ads integrations. iOS Native App (SwiftUI & Apple Ecosystem)- Built a native iOS fitness app with SwiftUI, plus widgets and an Apple Watch app- Integrated Vision API for real-time pose detection and form correction, delivering interactive workout guidance. Serverless Backend (AWS Cloud Architecture)- Architected and deployed a serverless backend with AWS Amplify, AppSync, Lambda, DynamoDB, S3, Pinpoint, and EC2- Reduced AWS costs by 30% through service selection, scaling, and optimization- Delivered AI-driven personalization with OpenAI and AWS Bedrock- Fine-tuned models and prompts, cutting token usage by 70% while maintaining accuracy. Team Leadership & Code Quality- Led a remote team on a React Native project, setting code standards and review policies- Implemented CI/CD pipelines with AWS Amplify for automated deployments- Authored requirements, performed competitive analysis, and designed feature architectures aligned with product goals.
EDUCATION
British Columbia Institute of Technology
iOS Mobile App Development
British Columbia Institute of Technology
Java Application Development
Hitek Computer School
Certificate, Software Quality Assurance and Software Testing
Kazan National Research Technological University
Honours Bachelor’s , Chemical Technology of Petroleum and Gas Processing
ABOUT ANDREI TEKHTELEV
I design and build elegant, high-performance applications focused on seamless mobile and web experiences. My current focus is on integrating modern AI capabilities, computer vision, and AR/VR technologies to create immersive, intelligent, and adaptive experiences that push the boundaries of traditional app design. With deep expertise in full-stack development, mobile engineering, AI-driven solutions, and scalable cloud architecture, I bring user-centric digital products to life — from concept to deployment.What I Do • Full-Stack Development – Building robust web and mobile applications using React, TypeScript, Node.js, React Native, and SwiftUI. • AI & Intelligent Systems – Implementing AI-driven personalization, recommendation engines, and real-time insights with OpenAI, AWS Bedrock, and custom ML models. • AR/VR & Computer Vision – Exploring interactive 3D experiences and on-device vision models for motion tracking, posture recognition, and immersive fitness or learning environments. • Cloud & Serverless Architecture – Designing scalable, secure infrastructure with AWS Amplify, Lambda, DynamoDB, AppSync, and Pinpoint. • Video & Streaming Solutions – Developing custom video conferencing, live streaming, and media analysis pipelines using AWS Chime and social media APIs. • Performance & Security Optimization – Ensuring reliability, scalability, and user privacy through best engineering practices. • Leadership & Collaboration – Leading cross-functional remote teams, driving innovation, and delivering projects from prototype to production with technical excellence.
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