Ermir is available for hire
Hire ErmirErmir Suldashi
Verified Expert in Engineering
React Developer
Prishtina, Kosovo
Toptal member since March 19, 2018
Bio
Ermir has worked on many projects, mainly as a back-end engineer, specializing in REST APIs, real-time communication, and voice communication. His current work includes writing scalable back-end services for WebRTC-based broadcasting platforms powered by Node.js and Kurento. Ermir joined Toptal to find projects to do meaningful and challenging work.
Portfolio
Hudl
React, TypeScript, GraphQL, Full-stack, .NET, Amazon Web Services (AWS)...
Omelink
.NET, JavaScript, TypeScript, AI Tools, Responsive UI, User Experience (UX)...
Genesis Digital, LLC
jQuery, JavaScript, HTML, CSS, Vue, Front-end, Full-stack, PHP, Tailwind CSS...
Experience
- Node.js - 6 years
- JavaScript - 6 years
- SQL - 6 years
- Full-stack - 6 years
- React - 6 years
- Video Streaming - 5 years
- WebRTC - 2 years
- Amazon Web Services (AWS) - 2 years
Work Experience
Full-stack Developer
2025 - 2026
Hudl
- Rebuilt the athlete search and listing experience for the client's high school football vertical, cutting result latency through new database indexing and query restructuring across tens of thousands of athlete records.
- Designed and shipped a provider-agnostic data ingestion schema for third-party athlete performance statistics and video, replacing a single-source model; the abstraction absorbed an additional data partner months later with no schema rework required.
- Delivered athlete profile visibility controls, giving athletes granular authority over what recruiters, coaches, and the public could see on their profiles.
- Implemented every feature end-to-end across a containerized microservice architecture — Vue front-end, .NET/C# services, and AWS DocumentDB — working from detailed Figma specifications built on the company's corporate design system.
- Covered delivered features with automated testing at three layers: Jest unit tests, Playwright end-to-end sessions, and Chromatic visual regression to catch unintended rendering changes before release.
Technologies: React, TypeScript, GraphQL, Full-stack, .NET, Amazon Web Services (AWS), Webpack, Agentic Coding, Claude Code, Large Language Models (LLMs), Web Development, Performance, Security, Privacy, Claude, Web Application Architecture, APIs, AI Agents, Artificial Intelligence (AI), AI-assisted Development, AI-generated Code, Video Editing, Bug Fixes, Monorepos, Codex, Playwright, Storybook, React Testing Library, Agentic AI, Architecture, Git, Authentication, Authorization, Automated Testing, Data Modeling, Relational Databases, Vue, C#, .NET Core, CORS, CSS3, Video Streaming, Audio Streaming, Streaming, Software Engineering, System Architecture, Agentic Workflow Design, DevOps, AI Systems, API Design, Agentic AI Systems, Back-end Development
Tech Team Lead
2024 - 2025
Omelink
- Led a team of developers to deliver a comprehensive IAM solution for a government project built with .NET, Docket, React, JavaScript, and Azure.
- Deployed a document management solution that accepted submissions from the public and was managed by back-office staff in a separate component.
- Integrated Azure cloud features such as Entra, ACR, and Functions.
Technologies: .NET, JavaScript, TypeScript, AI Tools, Responsive UI, User Experience (UX), Redux, Zustand, Application State Management, Agentic Coding, Large Language Models (LLMs), Web Development, Performance, Security, Privacy, Claude, SQL, Web Application Architecture, APIs, AI Agents, Software Architecture, Artificial Intelligence (AI), AI-assisted Development, Technical Leadership, AI-generated Code, Bug Fixes, Monorepos, Codex, Server-side Rendering (SSR), Storybook, React Testing Library, Azure, Leadership, Git, Authentication, Authorization, Automated Testing, Data Modeling, Relational Databases, C#, .NET Core, CORS, Domain-driven Design (DDD), OAuth 2, OpenID, CSS3, Software Engineering, System Architecture, Team Leadership, API Design, Back-end Development
Front-end Developer
2024 - 2024
Genesis Digital, LLC
- Implemented pages and components for a SaaS dashboard where the users would have access to all the settings and controls for a suite of products. The dashboard contained features such as routing, statistics, back-end integration, and complex state.
- Ported legacy jQuery functionality to new Vue components without downtime or disrupting the existing features.
- Released several features using new designs, simplified flows, and fewer clicks, which increased the user retention rate and reduced user churn.
Technologies: jQuery, JavaScript, HTML, CSS, Vue, Front-end, Full-stack, PHP, Tailwind CSS, Tailwind UI, Web Development, Performance, Security, Privacy, SQL, Web Application Architecture, APIs, Bug Fixes, Server-side Rendering (SSR), Architecture, Git, Authentication, Authorization, Automated Testing, Data Modeling, Relational Databases, CORS, CSS3, Software Engineering, System Architecture, API Design, Orchestration, Back-end Development
Senior Software Developer
2023 - 2023
V7 Labs
- Developed multiple features for the annotation editor that allow users to manually or automatically label objects or areas of interest in images or videos.
- Implemented complex interface elements for a professional tool with dozens of options, including keyboard shortcuts, touch options, and multi-step flows.
- Collaborated with the wider design and DevOps teams to deliver features multiple times daily to the customer using CI/CD.
Technologies: JavaScript, Vue 2, Canvas, WebGL, REST, REST APIs, API Gateways, CI/CD Pipelines, Full-stack, Cloud, Jest, CSS, Vue, Front-end, Front-end Development, API Integration, Full-stack Development, Web Development, Security, Privacy, Web Application Architecture, Video Editing, Bug Fixes, Architecture, Git, Automated Testing, Data Modeling, Relational Databases, CORS, CSS3, Video Streaming, Audio Streaming, Streaming, Software Engineering, Startups, System Architecture, DevOps, AI Systems, API Design, Orchestration, Back-end Development
Senior Software Developer
2022 - 2022
Orkes
- Developed a SaaS React app that allowed users to manage and provision their custom Cloud instances of Netflix Conductor.
- Created features and components using React for the internal Netflix Conductor instances that ran in the SaaS Cloud.
- Upgraded, debugged, and developed features for Netflix Conductor using Java.
Technologies: React, Node.js, Java, REST, REST APIs, API Gateways, NoSQL, Full-stack, Cloud, Material UI, Jest, CSS, Front-end, Front-end Development, API Integration, Context API, Zustand, Next.js, Web Development, Server-side Rendering (SSR), React Testing Library, Data Modeling, Software Engineering, System Architecture, API Design, Orchestration, Back-end Development
Senior Full-stack Developer
2021 - 2022
Fonoa
- Developed custom integrations with dozens of national business databases using techniques such as scraping, APIs, crawling, automated browsing, and more.
- Separated a large monolithic app into multiple microservices that scaled independently.
- Implemented internal performance monitoring for custom scalability across workloads with a high variance of resource usage.
Technologies: JavaScript, TypeScript, Puppeteer, Back-end, REST, REST APIs, API Gateways, NoSQL, Full-stack, Cloud, Material UI, Jest, CSS, Front-end, Front-end Development, API Integration, Full-stack Development, Context API, Data Modeling, Pub/Sub, Back-end Development
Founder | CEO
2019 - 2021
Outsider.fm
- Created a voice broadcast system using WebRTC that supports thousands of listeners and speakers.
- Integrated the voice broadcast system with a Node.js back-end via a Socket.IO communication system.
- Created a comprehensive web interface using React.
- Implemented unique features to modify and augment the incoming and outgoing audio streams.
- Integrated PostgreSQL as a data store using normalized tables.
Technologies: Socket.IO, Web Audio, React, Node.js, WebRTC, API Development, PostgreSQL, CSS, Front-end, Front-end Development, API Integration, Full-stack Development, Browsers, Video Editing, Pub/Sub, RabbitMQ, Audio Streaming, Streaming, Startups, Team Leadership, DevOps, Orchestration, Back-end Development
Senior Full-stack Engineer
2018 - 2021
Inspire11
- Developed a mobile and web app for a client using React, React Native, and AWS Amplify that incorporated voice and video chat using WebRTC between platforms. This app was released and is currently being used widely by customers in the United States.
- Developed a React app for a client in the logistics industry that directly interfaced with a hardware module installed on trucks and trailers. The web app was used to track and optimize the use of the customer's fleet of over 100 vehicles.
- Oversaw the training and placement of multiple interns, with many of them eventually advancing to full employment and participation in company projects.
Technologies: Node.js, React, React Native, Amazon Web Services (AWS), AWS Amplify, AWS Lambda, REST, REST APIs, API Gateways, NoSQL, Full-stack, Jest, CSS, Front-end, Front-end Development, API Integration, Payment Gateways, Full-stack Development, Auth0, Google Cloud Platform (GCP), Stripe, Design, Mobile, User Interface (UI), Mobile App Development, Android, iOS, Mobile Development, Python, SQL, Software Architecture, Server-side Rendering (SSR), Team Leadership
Senior Software Developer
2017 - 2018
Solaborate
- Integrated Kurento Media Server, which is used for streaming live video to users using WebRTC.
- Implemented a feature for video calls that transferred from P2P to Kurento without dropping the call.
- Transitioned the current monolith app to a microservice architecture by using a WebRTC microservice.
- Formulated and implemented transfer strategy for microservice architecture throughout the entire application.
- Mentored and trained new and existing employees in WebRTC and real-time systems.
Technologies: Kurento Media Server, WebRTC, Redis, React, Microservices, Node.js, RDBMS, Cloud, MySQL, CSS, Vue, Front-end, Front-end Development, API Integration, Full-stack Development, .NET, Software Architecture
Founder | CEO
2016 - 2018
Perfect.fm
- Developed a basic voice chat functionality for the core feature.
- Implemented a novel voice-recording technique and server-side mixing technology.
- Added lossy audio compression algorithms (Opus) which were implemented in C++ to the React project. The C++ code was compiled into ASM.
- Used React for the interface to implement a single page application.
- Implemented real-time communication between server and client using Socket.IO.
Technologies: Opus, WebRTC, React, Node.js, PostgreSQL, RDBMS, CSS, Front-end, Front-end Development, Full-stack Development, Video Editing
Trainer
2014 - 2015
Smart Code
- Gave training courses in web technologies for people wishing to become programmers.
- Prepared supplemental training materials for computer science students that wished to learn additional skills on top of the ones they learned in university.
- Organized training in WebSockets and other real-time technology.
Technologies: WebSockets, WordPress, Laravel, PHP, jQuery, JavaScript, HTML5, PostgreSQL, CSS, Front-end
Web Developer
2013 - 2015
Rrota Creative Studio
- Created a Laravel web app from scratch to improve the local government's document management.
- Implemented features in C# and .NET for a shopping center's analytics solution.
- Developed fully a JavaScript kiosk app for a shopping center in Belgium that could help the visitors find their way around the shopping center using indoor mapping.
- Migrated old websites along with their existing data to new ones implemented in WordPress.
- Supported a national voting agency by implementing a voting location app that showed every voter their polling place and navigated them by using OpenStreetMaps.
Technologies: WordPress, Laravel, TypeScript, C#, jQuery, JavaScript, PHP, RDBMS, MySQL, CSS, Front-end, .NET, Mapbox, Domain-driven Design (DDD)
WordPress Developer
2012 - 2013
NineLayers
- Developed custom WordPress themes for sale in the Envato Market.
- Built custom WordPress plugins both for use in our themes and for general purpose releases.
- Built various JavaScript libraries for many features, such as mapping, internationalization, 3D graphics, and more.
Technologies: WordPress, JavaScript, HTML5, MySQL, CSS, Front-end
Project History
Infinitower
Infinitower is a platformer video game developed using a custom engine. The engine is written in JavaScript using the ECS pattern and supports features such as scenes, state management, multiple input types (keyboard, joystick, touchscreen), input capture and playback, shaders, timing and scheduling, and much more.
Perfect.fm
Perfect.fm is a web app that uses WebRTC to allow communication with up to four people simultaneously, and once the conversation is over, it offers the participants an opportunity to download a high-quality recording of their conversation. Perfect for podcasters, journalists, or any other party that wishes to have a record of the conversation.
Education
2015 - 2017
Master of Science Degree in Computer Science
Illinois Institute of Technology - Chicago, IL, USA
2009 - 2013
Bachelor's Degree in Computer Science
American University in Bulgaria - Blagoevgrad, Bulgaria
Skills
Libraries/APIs
Socket.IO, jQuery, Node.js, React, REST APIs, HTML5 Canvas, API Development, OpenID, WebRTC, Vue, Context API, Playwright, React Testing Library, Web Audio, AWS Amplify, Puppeteer, Vue 2, WebGL, Stripe
Tools
Git, Canvas, Webpack, GitHub, Auth0, Claude Code, Claude, Codex, RabbitMQ, Illustrator CC, Amazon Cognito, AWS CloudFormation, AWS AppSync, Figma, Sketch, Prisma
Languages
CSS, JavaScript, HTML, TypeScript, HTML5, ECMAScript (ES6), ES5, SQL, C#, CSS3, GraphQL, Python, SCSS, Sass, Java, PHP
Frameworks
.NET, .NET Core, OAuth 2, React Native, Express.js, Redux, Bootstrap, Jest, JSON Web Tokens (JWT), Material UI, Tailwind CSS, Next.js, Angular, AngularJS, Laravel, Chrome
Paradigms
REST, Web Application Architecture, Automated Testing, App Development, Unit Testing, Mobile Development, DevOps, Microservices, Agile, Automation, Event Sourcing
Storage
JSON, RDBMS, Relational Databases, PostgreSQL, NoSQL, Redis, MySQL, Kurento Media Server, Amazon S3 (AWS S3), Amazon DynamoDB, MongoDB
Platforms
AWS Lambda, Amazon Web Services (AWS), Mobile, Azure, Android, WordPress, Docker, iOS, Visual Studio Code (VS Code), Google Cloud Platform (GCP), Mapbox
Industry Expertise
Web Design
Other
Client-side JavaScript Frameworks, Video Streaming, Audio Streaming, Full-stack, Back-end, APIs, Web Development, Front-end, HTML Canvas, Front-end Development, API Integration, Full-stack Development, Application State Management, Large Language Models (LLMs), Performance, Security, Privacy, Bug Fixes, Monorepos, Server-side Rendering (SSR), Architecture, Authentication, Authorization, Data Modeling, CORS, Domain-driven Design (DDD), Streaming, Software Engineering, System Architecture, AI Systems, API Design, Agentic AI Systems, Orchestration, Back-end Development, Responsive UI, User Experience (UX), Mobile Apps, DOM, Software Architecture, SaaS, User Interface (UI), Responsive Web Apps, OAuth, Cloud, Mobile App Development, Tailwind UI, Zustand, AI Tools, Browsers, Agentic Coding, AI Agents, Artificial Intelligence (AI), AI-assisted Development, Technical Leadership, AI-generated Code, Video Editing, Storybook, Agentic AI, Leadership, Pub/Sub, Startups, Team Leadership, Opus, WebSockets, ECS, Design, Responsive Design, Serverless, API Gateways, CI/CD Pipelines, Payment Gateways, Agentic Workflow Design
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