Hi, I'm
Alex Mercer

I craft exceptional digital experiences — from pixel-perfect frontends to scalable backend systems. Turning ideas into reality, one line of code at a time.

Find me on
5+
Years Exp.
80+
Projects
50+
Clients
scroll
Available for work
San Francisco, CA

Passionate about building things for the web

I'm a full-stack developer with over 5 years of experience building modern web applications. I specialize in React, Node.js, and cloud infrastructure — obsessed with clean code, performance, and great user experiences.

When I'm not coding, you'll find me exploring open-source projects, writing tech articles, or hiking in the mountains. I believe great software is built by people who care deeply about craft.

Education
CS — MIT
Experience
5+ Years
Location
San Francisco
Languages
English, Spanish
Download CV

Services I Offer

End-to-end solutions tailored to your needs — from concept to deployment.

Frontend Development

Pixel-perfect, responsive UIs using React, Next.js, and Tailwind CSS with smooth animations and stellar performance.

ReactNext.jsTailwind

Backend Development

Scalable REST & GraphQL APIs built with Node.js, Express, and PostgreSQL. Secure, fast, and production-ready.

Node.jsGraphQLPostgreSQL

Cloud & DevOps

CI/CD pipelines, Docker containers, AWS infrastructure — deploying and scaling applications with confidence.

AWSDockerCI/CD

Mobile Development

Cross-platform iOS & Android apps using React Native with native-feel performance and intuitive UX patterns.

React NativeExpo

UI/UX Design

Wireframes, design systems, and prototypes in Figma. Human-centered design that delights users and drives conversions.

FigmaDesign Systems

Performance & SEO

Auditing, optimizing, and boosting Core Web Vitals and SEO scores to ensure your site ranks and loads lightning fast.

Core Web VitalsSEO

Skills & Expertise

Core Technologies

React / Next.js 95%
Node.js / Express 90%
TypeScript 88%
PostgreSQL / MongoDB 85%
Python / Django 78%
AWS / DevOps 80%

Tools & Technologies

React
Node.js
JavaScript
Python
Docker
AWS
Git
GitHub
PostgreSQL
Figma
Tailwind
Firebase

Featured Projects

A selection of my recent work — built with care, shipped with confidence.

SaaS Analytics Dashboard

Featured

Real-time analytics platform with interactive charts, custom reports, and multi-tenant architecture.

ReactD3.jsNode.jsAWS

E-Commerce Platform

Live

Full-featured e-commerce solution with payment integration, inventory management, and admin dashboard.

Next.jsStripePrisma

Real-time Chat App

Open Source

Slack-like messaging app with WebSocket support, file sharing, threads, and end-to-end encryption.

ReactSocket.ioRedis

AI Writing Assistant

AI-Powered

GPT-powered content generation tool with custom fine-tuning, style control, and team collaboration.

OpenAINext.jsMongoDB

Fitness Tracker App

Mobile

Cross-platform fitness app with workout tracking, nutrition logging, and progress visualizations.

React NativeExpoFirebase

Auth Microservice

Backend

Production-grade auth service with OAuth2, JWT, 2FA, rate limiting, and audit logging.

Node.jsJWTOAuth2

Work Experience

Professional Experience

2022 — Present

Senior Full-Stack Developer

TechCorp Inc. · San Francisco

Led development of core product features serving 100k+ users. Architected microservices migration that improved system reliability by 40%.

2020 — 2022

Full-Stack Developer

StartupHub · Remote

Built and scaled 3 SaaS products from 0 to 10k users. Owned the full stack — from database design to pixel-perfect UI delivery.

2019 — 2020

Frontend Developer

Digital Agency · New York

Delivered 20+ client websites and web apps. Specialized in React, animations, and performance optimization.

Education & Certifications

2015 — 2019

B.S. Computer Science

Massachusetts Institute of Technology

2021

AWS Solutions Architect

Amazon Web Services · Professional

2022

Google Cloud Professional

Google Cloud Platform · Developer

2023

Certified Kubernetes Administrator

CNCF · CKA Certification

What People Say

"Alex delivered our SaaS dashboard ahead of schedule with exceptional quality. His attention to detail and proactive communication made the entire process smooth."

Sarah Johnson
CEO, TechStartup

"Incredible work on our e-commerce platform. Performance improved dramatically and the new UI boosted our conversion rate by 35%. Highly recommend."

Marcus Reed
CTO, ShopFlow

"Alex built our mobile app from scratch in 3 months. Clean code, great UX, and he was always available to discuss changes. Will definitely hire again."

Priya Mehta
Product Manager, FitApp

Let's Work Together

Have a project in mind? I'd love to hear about it. Drop me a message and I'll get back to you within 24 hours.

Email
alex@mercer.dev
Phone
+1 (555) 000-0000
Location
San Francisco, CA
Available for Work

Currently accepting new projects. Typical response time within 24 hours.

Send a Message