Senior Software Engineer

Open to strong engineering opportunities

Senior engineer for teams that need product sense and clean execution.

I build React Native apps, React and Next.js frontends, and Node.js systems with a strong eye for product quality. The work combines practical engineering, polished interfaces, and ownership from idea to shipped experience.

Best fit: teams that want a senior engineer who can ship, raise UI quality, and help products feel more credible in the hands of users.

React NativeReactNext.jsNode.jsTypeScriptProduct-focused UI

3+

years shipping production software

Senior IC

hands-on across product, UI, and delivery

Mobile + Web

React Native, React, Next.js, Node.js

Juan Martinez portrait

Location

US

Evansville, Indiana

Focus

Core

React, React Native, Next.js, Node.js

Working style

Clean implementation, product-minded thinking, and front-end polish without unnecessary noise.

ReactNext.jsTypeScriptNode.js
Web Studios

Web Studios helps businesses look sharper and convert more confidently online.

This is the business side of my work: modern websites for companies that need better presentation, stronger performance, and a more premium customer-facing experience.

Web Studios preview

Featured business

Web Studios

Creating and maintaining professional websites for businesses that need more than a generic template. The focus is simple: stronger credibility, faster performance, clearer messaging, and a site that feels like it belongs to a serious business.

Custom developmentResponsive websitesSEO-friendly buildsPerformance-focused UX

Modern websites

for businesses that need to look sharper and sell more clearly

Faster experience

built for speed, responsive behavior, and stronger first impressions

Premium presentation

cleaner branding, stronger hierarchy, and more trust on first visit

What I offer

Modern websites for businesses that need better positioning, cleaner UX, and a site that gives customers more confidence.

Why it matters

Most businesses lose trust online because the site feels dated, unclear, or cheap. Web Studios fixes that with better structure, stronger hierarchy, and more premium presentation.

Typical outcomes

Faster websites, clearer messaging, more premium branding, and a better first impression that helps businesses look more established.

Juan Martinez working portrait
About

Engineering taste shaped by product thinking.

From healthcare to tech, the work has always been grounded in solving real problems. That shows up today in practical architecture, clean interfaces, and software that feels considered from the first interaction.

How I build

Clear structure, refined UI, maintainable code, and pragmatic decisions.

What I focus on

Scalable products, real-time systems, mobile experiences, and polished UX implementation.

Why it matters

Good software should earn trust quickly and still hold up when the product grows.

Expertise

Capabilities across mobile, web, and product systems.

A focused mix of front-end craft, mobile product development, and backend implementation for software that needs to feel polished and hold up under real use.

React Native product development

Cross-platform apps built with strong interaction quality, clean state management, and practical product thinking.

Next.js and premium front-end systems

Modern web products with strong layout discipline, polished UI implementation, and performance-minded delivery.

Backend and real-time architecture

Node.js, TypeScript, APIs, live updates, and product infrastructure that support responsive, scalable user experiences.

Product-minded engineering execution

The work balances code quality, product clarity, ownership, and the finish needed for software to feel credible.

Technical arsenal

TypeScript

React

React Native

Next.js

Node.js

Tailwind CSS

Beyond the code

Leadership
Communication
Product thinking
Ownership
Experience

Roles, ownership, and the kind of product work I've led.

The left side was wasting space, so this section now opens tighter and lets the actual experience carry the weight.

3+

years building production software

Founder

business owner and client-facing builder

Mobile + Web

product execution across both surfaces

Web Studios

Founder & Lead Software Engineer

Mar 2025 - Present

Build and maintain professional websites for businesses that need stronger UX, better performance, and clearer brand presentation.

Lead both client-facing product direction and implementation, balancing business needs with polished execution.

Venue Platform

Founding Senior Software Engineer

Nov 2024 - Present

Architected scalable, secure backends in TypeScript and Node.js, cutting server response times by 20% and improving performance by 25%.

Built real-time, encrypted APIs supporting 100K+ concurrent users across platforms.

Boosted system reliability by 20% through proactive security and performance optimizations.

Venue Platform

Founding Software Engineer

Apr 2024 - Nov 2024

Delivered a cross-platform MVP in 6 months using React Native and TypeScript, improving development efficiency by 30%.

Released daily features with a security-first mindset, reducing crash rates by 25%.

Owned the full feature lifecycle from Figma to deployment with minimal oversight.

Freelance

Software Engineer, Full Stack

Oct 2022 - Apr 2024

Delivered iterative, client-driven web solutions with a 20%+ boost in usability and engagement.

Streamlined development workflows while focusing on high-quality, user-centric design.

Credibility

More than just implementation

I am comfortable moving between UI engineering, backend decisions, product detail, and delivery planning when a project needs full ownership.

Credibility

UI polish with technical credibility

I care about how software feels in the hand, but the visual layer is always backed by structure, maintainability, and real engineering discipline.

Credibility

AI used strategically

I use AI-assisted development tools like Cursor to accelerate execution, tighten iteration loops, and improve quality without outsourcing judgment.

Contact

Let's build something that feels sharp from day one.

Whether you need a strong front-end build, a React Native product, or a senior engineer who can help shape execution end to end, I'm open to the right opportunities.

juanmartinez5678@hotmail.com