Performance and architecture reviews for production Next.js and React applications

I help teams diagnose performance bottlenecks, rendering issues, and architectural risks in modern React and Next.js systems.

Lead Software Engineer with experience across large production web platforms, React/Next.js systems, Node.js services, and cloud infrastructure.

Who this is for

This service is designed for teams working on production Next.js applications that are becoming slower, more complex, or harder to scale.

I typically help startups, product teams, and engineering organizations that want to improve performance, make better rendering and caching decisions, and reduce technical risk before larger frontend changes.

Common problems

Common problems I help solve

Slow page performance

Pages feel heavier than they should, with poor load times and weak Core Web Vitals.

Unclear rendering strategy

Too much client-side rendering, weak use of Server Components, or uncertainty around SSR, ISR, and streaming.

Large client bundles

Heavy dependencies and shared imports increase JavaScript cost and hurt performance.

Inefficient data fetching

Duplicate requests, waterfalls, missing caching, and slow API dependencies.

Architecture that doesn't scale well

Codebases become harder to maintain, reason about, and optimize over time.

Audit offering

Next.js Performance & Architecture Audit

A focused technical review of your application to identify performance bottlenecks, architectural risks, and practical opportunities to improve speed, maintainability, and scalability.

The audit covers

  • Rendering strategy across SSR, CSR, ISR, and Server Components
  • Bundle size and dependency analysis
  • API and data-fetching review
  • Caching strategy evaluation
  • Core Web Vitals and loading behavior
  • Architecture and maintainability assessment
  • Prioritized recommendations and implementation roadmap

What you get

Written audit report

A clear summary of findings, performance risks, and recommended improvements.

Prioritized action plan

Recommendations grouped by impact and effort so your team can focus on the highest-value changes first.

Architecture guidance

Clear direction on rendering boundaries, data fetching patterns, caching, and structural improvements.

Review walkthrough

A session to walk through the findings, answer questions, and discuss implementation options.

When teams usually reach out

Common situations where an outside review helps

  • The application feels slower as the codebase grows. Pages that used to feel fast now take longer to load, and it’s not obvious where the bottleneck is.

  • Rendering behavior has become harder to reason about. There’s uncertainty around where to use Server Components, client components, SSR, or caching strategies.

  • Data fetching is creating performance issues. Waterfalls, duplicate requests, or inefficient APIs are slowing pages down.

  • The frontend architecture is becoming harder to maintain. As the product grows, changes become riskier and performance improvements become harder to implement.

  • The team wants a second engineering opinion. Sometimes teams simply want another experienced engineer to review the system before making larger changes.

If any of these situations sound familiar, feel free to reach out.

Why work with me

I'm a Lead Software Engineer with experience building and improving production systems across React, Next.js, Node.js, serverless platforms, and cloud infrastructure.

My work has involved performance-sensitive frontend systems, backend APIs, distributed systems, and architecture decisions that affect both user experience and long-term maintainability.

I approach performance as an engineering problem, not just a page-speed score. That means looking at rendering strategy, data flow, caching, API behavior, and the architectural choices that influence performance over time.

How it works

What happens after you reach out

1. You send a short description of the system

Tell me a bit about the application, the stack, and the issues you’re seeing.

2. I review the context

I’ll take a look and let you know whether it seems like something I can help with.

3. We schedule a short call

If it looks like a good fit, we’ll discuss the system and possible next steps.

Let's take a look at your application

If you're dealing with slow pages, growing frontend complexity, or performance issues in a Next.js application, feel free to reach out.

Send a short description of the system you’re working on, the stack, and the issues you’re seeing. I’ll review the details and reply by email. If it looks like a good fit, we can schedule a short call from there.

hello@shandiz.dev