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Hi, I'm Yan Kukhalski, a Senior Full Stack Engineer with over 10 years of experience creating scalable, secure, and high-performance web applications. I specialize in JavaScript and TypeScript, with deep expertise in frameworks like React and Next.js, as well as backend technologies such as Node.js and GraphQL. I enjoy leading development efforts, optimizing DevOps pipelines, and building robust cloud-native applications on AWS, GCP, and Azure. Over the years, I've had the opportunity to work with global clients and well-known companies like Meta, developing fintech, edtech, healthcare, and e-commerce platforms. I'm passionate about mentoring others, improving user experience, and continuously evolving my skill set to stay ahead in the fast-paced tech world.…Hi, I'm Yan Kukhalski, a Senior Full Stack Engineer with over 10 years of experience creating scalable, secure, and high-performance web applications. I specialize in JavaScript and TypeScript, with deep expertise in frameworks like React and Next.js, as well as backend technologies such as Node.js and GraphQL. I enjoy leading development efforts, optimizing DevOps pipelines, and building robust cloud-native applications on AWS, GCP, and Azure. Over the years, I've had the opportunity to work with global clients and well-known companies like Meta, developing fintech, edtech, healthcare, and e-commerce platforms. I'm passionate about mentoring others, improving user experience, and continuously evolving my skill set to stay ahead in the fast-paced tech world.

Yan Kukhalski

Full Stack Developer, Developer, Cloud Developer, +1

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Hi, I'm Yan Kukhalski, a Senior Full Stack Engineer with over 10 years of experience creating scalable, secure, and high-performance web applications. I specialize in JavaScript and TypeScript, with deep expertise in frameworks like React and Next.js, as well as backend technologies such as Node.js and GraphQL. I enjoy leading development efforts, optimizing DevOps pipelines, and building robust cloud-native applications on AWS, GCP, and Azure. Over the years, I've had the opportunity to work with global clients and well-known companies like Meta, developing fintech, edtech, healthcare, and e-commerce platforms. I'm passionate about mentoring others, improving user experience, and continuously evolving my skill set to stay ahead in the fast-paced tech world.…Hi, I'm Yan Kukhalski, a Senior Full Stack Engineer with over 10 years of experience creating scalable, secure, and high-performance web applications. I specialize in JavaScript and TypeScript, with deep expertise in frameworks like React and Next.js, as well as backend technologies such as Node.js and GraphQL. I enjoy leading development efforts, optimizing DevOps pipelines, and building robust cloud-native applications on AWS, GCP, and Azure. Over the years, I've had the opportunity to work with global clients and well-known companies like Meta, developing fintech, edtech, healthcare, and e-commerce platforms. I'm passionate about mentoring others, improving user experience, and continuously evolving my skill set to stay ahead in the fast-paced tech world.

Available to hire

Hi, I’m Yan Kukhalski, a Senior Full Stack Engineer with over 10 years of experience creating scalable, secure, and high-performance web applications. I specialize in JavaScript and TypeScript, with deep expertise in frameworks like React and Next.js, as well as backend technologies such as Node.js and GraphQL. I enjoy leading development efforts, optimizing DevOps pipelines, and building robust cloud-native applications on AWS, GCP, and Azure.

Over the years, I’ve had the opportunity to work with global clients and well-known companies like Meta, developing fintech, edtech, healthcare, and e-commerce platforms. I’m passionate about mentoring others, improving user experience, and continuously evolving my skill set to stay ahead in the fast-paced tech world.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Senior Full Stack Developer at Turing

October 1, 2022 - June 6, 2024

Led full-stack development of SaaS tools using Next.js, Node.js, and PostgreSQL for fintech and edtech clients. Designed and deployed multi-tenant architectures supporting role-based access and isolated client data. Developed serverless backend APIs using AWS Lambda and API Gateway, reducing operational costs by 35%. Implemented GraphQL API with Apollo Server and Prisma ORM, improving response flexibility and query efficiency. Built real-time features using WebSocket and Redis Pub/Sub, including live chat and collaborative whiteboards. Optimized CI/CD pipelines using GitHub Actions, reducing deployment time by 40%. Led peer code reviews and mentored junior engineers on architecture and testing best practices.

Full Stack Developer at Meta

January 1, 2019 - September 30, 2022

Developed and maintained internal dashboards and workflow tools using React, Relay, and GraphQL. Architected a dynamic permission system integrated with LDAP and RBAC, reducing access ticket volume by 50%. Refactored legacy components to React functional components with hooks, reducing memory leaks and improving testability. Designed internal tooling CLI with Node.js to automate moderation tasks and data audits. Deployed observability stack with Prometheus, Grafana, and OpenTelemetry, improving debugging time by 60%. Conducted technical deep dives and RFCs for introducing TypeScript to legacy codebases. Collaborated in cross-functional pods with product managers, UX, and data scientists to launch features at scale.

Full Stack Developer at VSP Vision Care

August 1, 2015 - December 31, 2018

Developed appointment scheduling and benefit management systems using React, Redux, and Express.js. Integrated HL7/FHIR APIs and patient data systems to ensure HIPAA compliance. Built microservices using NestJS and RabbitMQ for asynchronous claim validation and processing. Migrated legacy Java services to Node.js microservices hosted on AWS ECS, reducing server costs by 25%. Implemented OpenID Connect and OAuth2 authentication for secure login and SSO with insurance partners. Wrote unit and integration tests using Jest, Supertest, and Postman, achieving 95% test coverage. Acted as DevOps liaison to manage infrastructure with Terraform, Docker, and ECS Blue/Green deployments.

Software Engineer at Great Deals E-Commerce Corp

January 1, 2014 - August 1, 2015

Rebuilt the e-commerce platform UI with React, improving mobile performance and Lighthouse score by 30+ points. Developed scalable product catalog APIs using Node.js, MongoDB, and ElasticSearch, handling over 1 million SKUs. Built automated price scraper and updater using Puppeteer and CRON, syncing with major marketplaces (Shopee, Lazada). Integrated Stripe, PayMaya, and Gcash payment gateways with secure webhook validation. Implemented inventory and warehouse tracking system with WebSocket notifications. Led front-end modularization using Next.js and Styled Components, reducing bundle size by 40%. Improved deployment speed with Dockerized workflows, Jenkins pipelines, and NGINX reverse proxy setup.