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Igor Hlina
Verified Expert in Engineering
Full-stack Developer
Brno, South Moravian Region, Czech Republic
Toptal member since November 4, 2014
Bio
Igor is a full-stack developer specializing in front-end technologies and full architectural capability. He is currently focused on the rapid development of Next.js apps deployable into the cloud (big three). Igor is always learning the newest trends and figuring out how to integrate them into the main flow of technology development pragmatically.
Portfolio
EPAM Systems
TypeScript, Oracle Cloud, React, AI Tools, Full-stack Development, Architecture
Roier.cz
TypeScript, React, Next.js, NestJS, Payments, Full-stack Development...
LJA Engineering, Inc
React, Next.js, TypeScript, AWS Lambda, AWS AppSync, Domain-driven Design (DDD)...
Experience
- JavaScript - 20 years
- Node.js - 10 years
- PostgreSQL - 10 years
- Azure - 6 years
- Docker - 6 years
- React - 6 years
- TypeScript - 5 years
- Next.js - 4 years
Work Experience
Senior Front-end Developer
2025 - 2025
EPAM Systems
- Collaborated on the development of an innovative health online platform with HIPAA compliance in a large team of contractors.
- Constantly expanded skillset for Oracle Cloud deployments and innovated on integrating AI (LLMs) into the health product.
- Oversaw the launch of the product and helped to maintain successful deployment into production.
Technologies: TypeScript, Oracle Cloud, React, AI Tools, Full-stack Development, Architecture
Senior Full-stack Developer
2024 - 2024
Roier.cz
- Took over the development of the MVP from another developer and led a small team to the successful launch of the initial production release.
- Corrected the initial mistakes, such as the (messed-up) adoption of the microservices pattern without any traffic.
- Architected the onboarding process of new customers with future scalability in mind.
Technologies: TypeScript, React, Next.js, NestJS, Payments, Full-stack Development, Architecture
React/Next.js Developer
2024 - 2024
LJA Engineering, Inc
- Added a new UI and related back-end functionalities using event-sourcing and GraphQL.
- Migrated the legacy code to the recent version of Next.js and modernized the dev stack with strict type and code-style rules.
- Managed a couple of bigger features with the Agile methodology, documented the required functionality, and assigned subtasks to other developers.
Technologies: React, Next.js, TypeScript, AWS Lambda, AWS AppSync, Domain-driven Design (DDD), Event Sourcing, Amazon DynamoDB, Unit Testing, Identity & Access Management (IAM), Full-stack Development, Architecture
Back-end JavaScript Developer
2024 - 2024
Imfiy BV
- Helped the client build and deploy an MVP of an AI SaaS platform for social media influencers. Used generative AI, allowing automated social media post sharing and scheduling.
- Created a scalable web application with the help of Next.js 14 and a very strict TypeScript 5. All major tools for checking code quality were used and helped automate a cloud deployment.
- Built and managed non-trivial infrastructure in AWS with the help of Terraform. The whole stack was documented in great detail, and the rule of "least privilege" was followed as strictly as possible.
Technologies: Node.js, React, Full-stack, Artificial Intelligence (AI), APIs, ChatGPT, Prompt Engineering, Minimum Viable Product (MVP), Startups, TypeScript, Terraform, Unit Testing, AI Tools, Full-stack Development
Full-stack JavaScript Developer
2023 - 2023
Stubben Edge Group Limited
- Helped the team add new Lambda functions to AWS as a back-end engine of the product.
- Organized and supported the job duties of a junior full-stack developer and helped him understand the system and deliver the required functionality.
- Cooperated in launching a new project, a web application for buying additional insurance products for the London police department.
Technologies: React, Node.js, JavaScript, Full-stack, TypeScript, Amazon Web Services (AWS), AWS Lambda, AWS Amplify, Amazon Cognito, Amazon DynamoDB, Identity & Access Management (IAM), Full-stack Development
React and Node.js Senior Full-stack Developer
2022 - 2022
Hommz Technologies Ltd
- Helped to develop new features of the web application for B2B clientele.
- Worked with agile principles using Jira and Scrum.
- Prepared the back-end and front-end services for bi-weekly releases into production.
Technologies: React, Node.js, Full-stack, TypeScript, REST APIs, Material UI, Git, Jira, Docker, PostgreSQL, GitHub, TypeORM, REST, DOM, PostCSS, HTML5, CSS, HTML, NestJS, Cypress, Startups, Unit Testing, Full-stack Development
React Developer
2022 - 2022
Gartner - Digital Markets Engineering - Capitalizable
- Developed new functionalities using Agile methodologies on the Capterra.com website.
- Worked with and improved the corporate UI library using React and TailwindCSS.
- Maintained and modernized the codebase of several projects at Capterra.com.
Technologies: React, Node.js, TypeScript, Tailwind CSS, Serverless Framework, Jira, Scrum, Front-end Development, Storybook, Web Development, APIs, GraphQL, Jest, AWS Lambda, GitHub, REST, DOM, PostCSS, HTML5, CSS, HTML, Test-driven Development (TDD), Unit Testing
Front-end Lead
2021 - 2021
Dala.ai (via Toptal)
- Created and developed an Electron desktop client for the AI search engine.
- Prepared the CI pipeline for delivering the desktop app into production.
- Oversaw the Typesafe codebase of the Electron client using React, TypeScript, REST, Tailwind CSS, and GitHub Actions.
Technologies: React, TypeScript, Electron, Tailwind CSS, Google Cloud Platform (GCP), Figma, Firebase, Scrum, Front-end Development, Storybook, Web Development, APIs, JSON Web Tokens (JWT), Jest, GitHub, CI/CD Pipelines, REST, DOM, PostCSS, HTML5, CSS, HTML, Google Cloud, Google API, Infrastructure as Code (IaC), Startups, Unit Testing, Full-stack Development, Architecture
Full-stack Architect
2020 - 2021
SciencesPo (via Toptal)
- Architected, developed, and deployed the social network for arts using Next.js, TypeScript, and MS SQL Server in the Azure environment.
- Built a multilanguage application, specifically next-translate, with email and social login functionality. Used advanced user forms for creating online content.
- Launched the social network in Azure cloud. Optimized it for performance and running costs.
Technologies: React, TypeScript, Next.js, Azure, SQL Server 2017, JavaScript, Git, Node.js, CSS3, SQL, Bash, REST APIs, Ajax, Full-stack, InVision, Minimum Viable Product (MVP), Front-end, Back-end, DevOps, Material UI, Scrum, Front-end Development, Web Development, APIs, JSON Web Tokens (JWT), GitHub, Edtech Design, CI/CD Pipelines, Monitoring, Education, REST, DOM, Azure Blobs, HTML5, CSS, HTML, Google API, Infrastructure as Code (IaC), Vercel, Startups, Identity & Access Management (IAM), Localization, Full-stack Development, Architecture
Full-stack Developer
2020 - 2020
Effixis (via Toptal)
- Developed a complete web application for cloud scalability.
- Created a UI for deploying third-party workers in an Azure cloud.
- Helped optimize budgets and costs in an Azure environment.
Technologies: TypeScript, Next.js, JavaScript, Git, Node.js, Docker, React, Azure, PostgreSQL, CSS3, SQL, Bash, REST APIs, Ajax, ECMAScript (ES6), Azure Kubernetes Service (AKS), NGINX, Microservices, Dashboards, D3.js, Front-end Development, Web Development, APIs, GitHub, CI/CD Pipelines, REST, DOM, Azure Blobs, HTML5, CSS, HTML, Infrastructure as Code (IaC), Unit Testing, Full-stack Development, Architecture
Front-end and Cloud Developer
2020 - 2020
Figure, Inc.
- Optimized the front-end performance of the main website.
- Optimized a CI/CD pipeline by lowering build times, which resulted in accelerating builds.
- Helped analyze cloud metrics and monitored and mitigated outages.
Technologies: Amazon Web Services (AWS), Next.js, JavaScript, Git, Node.js, Docker, React, CSS3, SQL, Bash, REST APIs, Ajax, ECMAScript (ES6), NGINX, Continuous Integration (CI), Terraform, TypeScript, Microservices, Front-end Development, Storybook, Web Development, APIs, JSON Web Tokens (JWT), Redux, GraphQL, Jest, Amazon DynamoDB, AWS Lambda, GitHub, CI/CD Pipelines, Monitoring, REST, DOM, CSS, HTML, Startups, Unit Testing, Full-stack Development
DevOps Engineer
2020 - 2020
Dixons
- Helped a big corporation at the "Central DevOps" department to manage its migration to Azure cloud.
- Helped to develop a Terraform provider for Azure Storage in Go.
- Collaborated on an open-source plugin in a corporate environment.
Technologies: Go, Azure, Git, Docker, SQL, Bash, NGINX, Continuous Integration (CI), Terraform, Microservices, DevOps, Web Development, GitHub, CI/CD Pipelines, Monitoring, Infrastructure as Code (IaC), Ansible, Unit Testing, Full-stack Development
Tech Lead | Architect
2016 - 2020
Quantopy
- Architected a whole platform for ingesting a large amount of data on top of Azure and Kubernetes.
- Created an automated CI/CD pipeline on top of GitLab for shipping the microservice-based product.
- Reviewed the code for the front-end team using Next.js.
Technologies: Next.js, Kubernetes, JavaScript, PHP, Git, Node.js, React, Azure, PostgreSQL, CSS3, SQL, Bash, REST APIs, Symfony, Ajax, Object-oriented Programming (OOP), ECMAScript (ES6), Symfony 4, Azure Kubernetes Service (AKS), NGINX, Continuous Integration (CI), Antd, TypeScript, Microservices, Technical Leadership, Full-stack, Minimum Viable Product (MVP), Front-end, Back-end, DevOps, Twilio, Front-end Development, Storybook, Web Development, APIs, JSON Web Tokens (JWT), Redux, OAuth, Jest, GitHub, GitLab CI/CD, CI/CD Pipelines, Monitoring, REST, DOM, Azure Blobs, HTML5, CSS, HTML, Ansible, Infrastructure as Code (IaC), Symphony, Startups, Unit Testing, RabbitMQ, Fintech, Full-stack Development, Architecture
Lead Front-end Developer
2014 - 2016
Vectary
- Created a web interface for the WebGL 3D editor using AngularJS.
- Built a back-end platform supporting 3D modelers and artists, selling their creations on Vectary's website.
- Prepared JavaScript stack for talented Three.js developers.
Technologies: Gulp, AngularJS, JavaScript, PHP, Git, Node.js, PostgreSQL, CSS3, SQL, Ajax, Object-oriented Programming (OOP), ECMAScript (ES6), NGINX, Continuous Integration (CI), Technical Leadership, Minimum Viable Product (MVP), Front-end, Back-end, Front-end Development, Web Development, OAuth, GitHub, REST, DOM, HTML5, CSS, HTML, Startups, Unit Testing, Full-stack Development, Architecture
Lead Front-end Web Developer
2013 - 2014
Phirational
- Led a small team of front-end developers.
- Created a social network for brand research.
- Built a bigger and better development stack for the project.
- Programmed a real-time chat functionality with full-duplex technology and notifications.
Technologies: REST APIs, Sass, Gulp, AngularJS, JavaScript, PHP, Git, CSS3, SQL, Ajax, Object-oriented Programming (OOP), Technical Leadership, Front-end Development, Web Development, OAuth, GitHub, DOM, HTML, CSS, Startups, Full-stack Development, Architecture
Front-end Web Developer
2012 - 2013
Seges
- Collaborated with the back-end developer to create a social network for clean-tech experts.
- Adopted AngularJS to create the development stack for this project.
- Worked with third-party HTML and design providers.
- Created a real-time chat functionality using server-side events and WebSockets.
Technologies: REST APIs, Sass, CoffeeScript, AngularJS, JavaScript, Git, Node.js, CSS3, SQL, Ajax, Object-oriented Programming (OOP), Minimum Viable Product (MVP), Front-end, Front-end Development, Web Development, APIs, OAuth, GitHub, DOM, HTML, CSS, Startups, Unit Testing, Full-stack Development, Architecture
Web Developer
2010 - 2012
Websupport
- Created a corporate CMS as a full-stack PHP developer.
- Handled the front-end part of the internet domain buy process.
- Advocated for adopting new and better technologies like Git, Backbone.js, or DIBI.
- Redesigned the order page with team members. Created the initial step as a SPA using Backbone.js and Require.js.
Technologies: jQuery, JavaScript, Git, CSS3, SQL, Ajax, Object-oriented Programming (OOP), Front-end Development, Web Development, OAuth, GitHub, DOM, HTML, CSS, Unit Testing, Full-stack Development, Architecture
HTML | CSS Coder
2008 - 2010
Neonus
- Transformed PSD designs into live web pages using a corporate CMS.
- Created the front-end effects and animations using jQuery.
- Oversaw the HTML and CSS coding of PSD templates and deployment into the company's CMS.
- Created and launched more than a dozen of e-shops templates.
Technologies: Linux, CSS3, HTML5, DOM, HTML, CSS, Symfony
Project History
Eureka.club
https://eureka.club/A nonprofit social network designed for anyone looking for meaningful content and conversations online. I built it with Next.js (React), TypeScript, and React Bootstrap. It was hosted in Azure, with an MS SQL database.
Vectary, Web-based 3D Editor
https://www.vectary.com/Vectary is a WebGL 3D editor. In the screenshot (https://i.postimg.cc/j2wJ7MtY/portfolio-vectary.png), you can see the editor interface I created with Angular. It's a web-based tool to help creators and artists get started in 3D modeling with the least effort.
Solved.fi
https://solved.fiSolved.fi looks behind private login:
(https://s3.amazonaws.com/f.cl.ly/items/2S2k163e2g2f0a37380n/solved.jpg)
UI components that assemble the main part of Solved.fi, the feed of posts, events, messaging, online status, filters, and more. It was built as a single-page application using Vue.
(https://s3.amazonaws.com/f.cl.ly/items/2S2k163e2g2f0a37380n/solved.jpg)
UI components that assemble the main part of Solved.fi, the feed of posts, events, messaging, online status, filters, and more. It was built as a single-page application using Vue.
Education
1996 - 2000
Technical High School Degree in Microelectronics
SOU-E Nižná - Nižná, Orava, Slovakia
Skills
Libraries/APIs
Node.js, REST APIs, React, Lodash, Antd, ReactPHP, jQuery, Chai, Socket.IO, D3.js, Google Maps, FFmpeg, x264, Google API, AWS Amplify, Three.js
Tools
Git, GitLab, Docker Swarm, Docker Compose, Terminal, Sublime Text 3, PhpStorm, Chrome Developer Tools, Gulp, Azure Kubernetes Service (AKS), GitLab CI/CD, GitHub, AviSynth, Ansible, Shadcn, Claude, Terraform, Google Kubernetes Engine (GKE), Knex.js, NGINX, VirtualBox, Zsh, Mocha, Figma, Jira, Prisma, PostCSS, Amazon Cognito, ChatGPT, AWS AppSync, Autodesk Fusion 360, RabbitMQ, InVision
Languages
TypeScript, JavaScript, ECMAScript (ES6), PHP, HTML, CSS, Sass, HTML5, CSS3, SQL, Bash, GraphQL, CoffeeScript, Go, Clojure
Frameworks
Symfony, Next.js, Symfony 4, Nette, Tailwind CSS, Material UI, JSON Web Tokens (JWT), Jest, tRPC, Jasmine, AngularJS, Express.js, Serverless Framework, Redux, NestJS, Cypress, Electron
Paradigms
Continuous Integration (CI), Object-oriented Programming (OOP), Unit Testing, Clean Code, Refactoring, DevOps, Testing, REST, Microservices, Test-driven Development (TDD), Functional Programming, Agile Software Development, Scrum, Event Sourcing, HIPAA Compliance
Platforms
Azure, Docker, Linux, Amazon Web Services (AWS), Apache Kafka, Kubernetes, Google Cloud Platform (GCP), Firebase, Twilio, Netlify, AWS Lambda, Vercel
Storage
PostgreSQL, MySQL, Google Cloud, Cloud Firestore, Amazon DynamoDB, Azure SQL, Azure Blobs, SQL Server 2017, Oracle Cloud
Other
Microelectronics, Video Compression, Ajax, Full-stack, Minimum Viable Product (MVP), Front-end, Back-end, Front-end Development, Web Development, APIs, CI/CD Pipelines, Software Development, DOM, Infrastructure as Code (IaC), Symphony, Startups, AI Tools, Cursor AI, Full-stack Development, Architecture, API Integration, Technical Leadership, WebSockets, User Interface (UI), Dashboards, Storybook, OAuth, TypeORM, Edtech Design, Monitoring, Chrome Extensions, Education, Artificial Intelligence (AI), Prompt Engineering, Fintech, Identity & Access Management (IAM), Localization, Agentic AI, Speech-to-Text (STT), Social Networks, Domain-driven Design (DDD), Payments
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