Software Engineer Senior

Alexander Chepakovich

Senior/Staff Software Engineer Front-End & Full-Stack AI/ML Apps

***********@*****.*** 631-***-**** GitHub: github.com/chepakovich Professional Summary

Versatile senior software engineer with 19 years of experience delivering high impact web apps, AI/ML pipelines, and cloud solutions for fintech, e commerce and enterprise SaaS. Expert in React, TypeScript, Python and AWS with a record of leading UI architecture, optimizing performance, and shipping data intensive products. Core Competencies

• Front End: JavaScript/TypeScript, React, Next.js, Tailwind CSS, Material UI, Styled Components, D3.js

• Back End: Node.js, Python, Django, GraphQL, RESTful APIs, PHP, MySQL, Rust

• AI/ML & Data: PyTorch, TensorFlow, Time Series Forecasting, Financial Modeling, Scrapy

• Cloud & DevOps: AWS (IAM, Lambda, API Gateway, ECS, DynamoDB, S3, Cognito, CloudFront, Route 53), Amplify, Vercel, Docker

• Quality & Tooling: Jest, Playwright, Cypress, Git, CI/CD (GitHub Actions, CodePipeline) Education

Master of Science in Information Systems Engineering Moscow State University of Information Technology, Moscow, Russia, 2008-2010 Master of Business Administration (Finance)

McGill University, Montreal, QC, Canada, 1997-2000 Professional Experience

Walmart Inc, Sunnyvale, CA Jan 2023 - present

Senior Software Engineer

• Co-lead front-end development for the Catalog and Subscriptions modules of Walmart Seller Center, the core marketplace platform for third-party sellers.

• Develop scalable, high-performance UI components using React and TypeScript, enhancing product listing, subscription management, and seller workflows

• Collaborate with product, design, and backend teams across multiple time zones to ship features with high quality and speed

• Optimize UI performance and accessibility for large-scale data grids and form-based workflows

• Contribute to codebase modernization and migration efforts, ensuring adherence to Walmart’s internal design system and accessibility standards ATCO Digital (contractor via TEEMA Group), remote Aug 2021 - Dec 2022 Senior React Developer

• Built service catalogue & core commerce pages for rumi.ca with React, TypeScript, Material UI.

• Migrated site to Next.js ISR for SEO, improving TTI 45% and Lighthouse scores to 95+. Livingly Media, Redwood City, CA Aug 2019 – July 2021 Staff Software Engineer

• Architected and launched two affiliate commerce properties generating $3M+ annual revenue - one with React, another with Python and Django to generate AMP pages.

• Designed Scrapy harvesting engine ingesting 500K+ products nightly.

• Mentored two junior engineers

Apple Inc (contractor via Infosys Ltd), Sunnyvale, CA May – Aug 2019 Technology Lead (Front-End, React)

• Led a distributed team in building internal React applications.

• Participated in full project lifecycle: scoping, estimation, resource and risk planning, and scheduling.

American Express GBT (contractor via Mindtree), Scottsdale, AZ Nov 2018 – Apr 2019 Sr. Front-End Developer (React)

• Built ExpertCare.amexgbt.com, a real-time global risk intelligence SPA for corporate travelers, integrating geolocation (via Google Maps), traveler data, and multi-channel notifications

• Developed interactive UI with React, Redux, HTML, and SASS

• Implemented reusable components and dynamic map-based visualizations AllianceIT, Toronto, ON (remotely) Aug 2016 – Oct 2018 Senior UI / Front-End Developer

• Developed responsive interfaces using React, Redux, D3.js, Bootstrap, and jQuery

• Built a centralized, web-based CRM and briefing management platform for enterprise clients.

• Created reusable UI components (customer lists, chat modules, input areas)

• Managed state architecture with Redux (Actions, Dispatchers, Providers, Store) Independent Contractor, Toronto, ON Mar 2014 – July 2016 Senior Front-End / Full-Stack Developer

Built and maintained full-stack web applications for clients and personal projects across finance, education, wellness, and social networking domains. React-based apps:

• InvestorsCraft.com – investor platform (AWS Lambda, DynamoDB, Cognito)

• Smekni.com – message board (using Redux and isomorphic JavaScript)

• InBeautyStyle.com – beauty & wellness site with GraphQL and Contentful PHP/MySQL sites:

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• MirZnanii.com – education site with 2M monthly visitors

• teamXup.com, ScienceLinked.com – niche social networks Stack: React, Node.js, Redux, D3.js, PHP, MySQL, HTML, CSS Grid, Bootstrap, jQuery, RESTful APIs, ES6/7

Full-Stack Developer, Moscow, Russia Aug 2005 – Feb 2014 Single-handedly designed, developed, and monetized 15+ content, fintech, and social websites for clients and personal ventures. Notable projects include:

• iStockResearch.com – early fintech platform for stock valuation using proprietary models

• X-Uni.com – Russian textbook site; Best-of-Montreal.com – local travel guide

• ProjFin.com, UltimBank.com, iGlobeInvest.com – fin. modeling and investment tools

• GameLinked.net, WorldZoom.org, VioletClub.org – niche social networks

• Multiple now-defunct educational and media sites (books, videos, university directories) Stack: HTML, CSS, PHP, MySQL, JavaScript, jQuery, Bootstrap, Adobe Photoshop, PayPal API, Google Maps, Google Analytics, Yandex.Metrica, AdWords, AdSense Notable Side Projects

• InvestorsCraft.com – AI-driven stock valuation and screening platform Designed and deployed end-to-end AI/ML pipelines for processing financial data, training predictive models (PyTorch, TensorFlow), and serving results via a responsive Next.js/ Material-UI frontend. Hosted on Vercel with AWS for backend support.

• LiberaCoin.com and CTDollar.com – cryptocurrency tools and blockchain portals Built with React + TypeScript and Material-UI, leveraging AWS (Amplify, API Gateway, DynamoDB, Cognito, S3, CloudFront, Route 53). Integrated cryptographic utilities for secure address validation, hashing, and token operations to support blockchain functionality. Studied and applied blockchain cryptography theory, including public/ private key systems, hash functions, Merkle trees, and digital signature schemes. Early Career in Finance & Sales

Edward Jones, Montreal, QC, Canada 2004-2005

Investment Representative

ABN AMRO Bank, then Commerzbank, Moscow, Russia 2003-2004 Relationship Banker

Alstom Power Systems, Moscow, Russia 2001-2002

Sales Manager

Bank of Canada, Ottawa, ON, Canada 2000-2001

FX Trader/Analyst

General Electric Co., Moscow, Russia and Montreal, QC, Canada 1993-2000 Business Development/Sales Manager

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