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I am a TypeScript Software Engineer with 5+ years of experience building scalable, high-performance web applications using React, Next.js, Node, and Nest. I focus on clean architecture, performance optimization, and maintainable code. I excel at delivering end-to-end features and mentoring junior developers in Agile teams, collaborating with product managers, designers, and back-end engineers to ship high-quality software.…I am a TypeScript Software Engineer with 5+ years of experience building scalable, high-performance web applications using React, Next.js, Node, and Nest. I focus on clean architecture, performance optimization, and maintainable code. I excel at delivering end-to-end features and mentoring junior developers in Agile teams, collaborating with product managers, designers, and back-end engineers to ship high-quality software.

Serghei Efremov

Front-End Developer, Full Stack Developer, Web Developer, +2

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I am a TypeScript Software Engineer with 5+ years of experience building scalable, high-performance web applications using React, Next.js, Node, and Nest. I focus on clean architecture, performance optimization, and maintainable code. I excel at delivering end-to-end features and mentoring junior developers in Agile teams, collaborating with product managers, designers, and back-end engineers to ship high-quality software.…I am a TypeScript Software Engineer with 5+ years of experience building scalable, high-performance web applications using React, Next.js, Node, and Nest. I focus on clean architecture, performance optimization, and maintainable code. I excel at delivering end-to-end features and mentoring junior developers in Agile teams, collaborating with product managers, designers, and back-end engineers to ship high-quality software.

Available to hire

I am a TypeScript Software Engineer with 5+ years of experience building scalable, high-performance web applications using React, Next.js, Node, and Nest. I focus on clean architecture, performance optimization, and maintainable code.

I excel at delivering end-to-end features and mentoring junior developers in Agile teams, collaborating with product managers, designers, and back-end engineers to ship high-quality software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

Romanian, Moldavian, Moldovan

Fluent

Russian

Advanced

English

Intermediate

French

Beginner

Work Experience

Front End Developer at XSoft Tech

July 1, 2022 - November 1, 2025

Built responsive, user-focused interfaces using React and modern JavaScript with reusable component patterns. Collaborated with designers and UX teams to transform wireframes and requirements into polished, pixel-perfect UIs. Integrated front-end features with RESTful APIs, ensuring seamless communication with back-end services. Used PHP, Laravel, and CodeIgniter on the back end to support front-end functionality. Improved application performance through code optimization, refactoring, and best practices. Debugged issues across front-end and back-end layers and participated in code reviews to ensure clean, scalable code.

Full Stack Developer at DevTactics

April 1, 2020 - March 1, 2022

Developed and maintained back-end functionality using PHP, Laravel, and CodeIgniter. Translated UI/UX designs into responsive, high-quality front-end implementations. Worked on client projects including TestRail, Assembla, Gurock Admin Panel, Mainlinemenswear admin panel, MMW CMS, and WRS Health EHR systems. Collaborated in an Agile environment with product managers, designers, and back-end teams to deliver features and fix production issues.