Boris V.
100% Job Success
Top Rated Plus

React Expert | Senior Front End Developer (React JS/Typescript)

15+ years of experience in React and web technologies, specializing in Edtech, LMS, healthcare, and industrial IoT. Passionate about creating user interfaces that exceed expectations. Let's do it. Together 🚀 🏆 Writing high-quality code, easy to work with. 🏆 Advanced knowledge in SOLID, Design Patterns, refactoring & unit-testing 🏆 In-depth understanding of EdTech, Healthcare, and IIoT industries. 🏆 Billed over 30,000 hours in a strict, transparent environment, delivering high-quality software products. ❇️ Demo App (built in 1.5 weeks): I focus on Edtech and Learning Management Systems, healthcare, and industrial IoT. The type of person I am: - 15+ years in computer programming, I understand how computers work intuitively, and solve issues very quickly - A self-directed and motivated 📶 How I work: 1. Initial Discussion: - You reach out, we schedule a call and discuss your project and the module I will work on. 2. Project Consultation: - I give you recommendations and estimate project scope and duration. 3. Setup & Collaboration: - We agree to work together, set up the work process, choose software and communication channels, and occasionally have demo and planning meetings. 4. Feature Development and Billing - I work on your feature requests and bug reports, update the task tracking board, and charge you monthly based on the hours I worked. Front-end skills/experiences I possess: - Solid experience with React, Redux, Next.js, Tailwind, Material, Emotion, Styled Components - 9+ years of experience with React and Typescript - Expertise with Material Design and Angular - Good understanding of Lazy loading (routes and components) - Hands-on experience  in upgrading React versions - Knowledge of webpack and bundle optimization - Experience integrating Javascript libraries and third-party APIs - Familiarity with git and git-flow - Ionic Mobile Apps - Progressive Web Apps (PWA) - JavaScript / TypeScript – 10+ years - Unit-tests - Automated in-browser tests Back-end: - Firebase / Amplify / Backend-less - Node.js - 9+ years (ExpressJS, NestJS) - C# / PHP - 15+ years - T-SQL / PostgressSQL - 15+ years Databases: - MongoDB - MySQL Architect / Principal Developer: - SOLID & Design Patterns applied in modern fashion (dependency injection, multi-layer architecture, service-oriented architecture, micro-services, serverless, etc) - RxJS/Flux/Redux/Reactive Programming - Refactoring - I do any types of refactoring. I'm trained to keep all the code modules and their dependencies in my mind, and I do major refactoring to the code, making every bit of the code to serve the right purpose, and removing everything which is not necessary - Unit-testing - I do refactoring while to simplify and decouple the code for unit-testing Additional: - Google Maps & Places APIs - AWS: S3, EC2, Lambda, DynamoDB - third party integrations: Auth0, Twilio, SendGrid, MailGun, Stripe, CoinGate, Coinbase - Python 2-3 👓 My previous clients are willing to refer me to another business: ⭐️⭐️⭐️⭐️⭐️ You've taken a lot of our pain away and you're one of the best developers I've worked with. - Neil Daly, Skin Analytics ⭐️⭐️⭐️⭐️⭐️ Absolutely amazing front end engineer, capable to produce superb results. Highly recommended (I will hire Boris for my next project w/o hesitation). - Rigard Kruger, Skin Analytics ⭐️⭐️⭐️⭐️⭐️ Boris is extremely professional and skilfull developer. His attention to detail, communication and outstanding code, makes him one of the most effective developers I had an opportunity to work with. - Peter, Dashnex LLC ⭐️⭐️⭐️⭐️⭐️ Boris is absolutely amazing engineer, who values your time, adheres to deadlines, and requires no micro-management. Highly recommended. - Victor, Square Labs UG ⭐️⭐️⭐️⭐️⭐️ It was a pleasure to work with Boris, I really appreciate the fact that he always came with ideas even at the bidding phase. I'm sure I will re-contract him in the future when needed. - Paul Chen, Care Venture

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  • API Integration
  • TypeScript
  • Angular
  • Angular 10
  • Stripe
  • NestJS
  • MySQL
  • RxJS
  • React Native


Endorsements from past clients

"I hired Boris to put together the UI in Angular for a project. He was truly impressive in the speed and the quality at which he was able to put it together - would definitely hire him again."

Shinichi U. | Founder of Joylogics
SaaS for cloud backups May 2023


"Boris is a true expert that solved many issues for us that other devs struggled with. He also is very fluent in English. He understood our goals completely, and often had suggestions for better approaches. I would highly recommend."

Scott D. | Founder
microlearning training edtech platform Apr 2023