Performance Engineering

Speed, efficiency, and reliability baked into every layer. Sub-100ms API responses, optimized database queries, and front-end performance tuning for measurable business impact.

What We Optimize

Front-End Performance

  • Code splitting and lazy loading
  • Image optimization (WebP, AVIF, responsive)
  • Critical CSS and font loading strategies
  • JavaScript bundle size reduction
  • Resource hints (preload, prefetch, preconnect)

API Performance

  • Response time optimization (<100ms target)
  • Database query optimization and indexing
  • N+1 query elimination
  • Caching strategies (Redis, CDN, in-memory)
  • Rate limiting and throttling

Database Optimization

  • Query execution plan analysis
  • Index design and maintenance
  • Connection pooling and management
  • Read replicas and sharding strategies
  • Query caching and materialized views

Caching Architecture

  • Multi-layer caching (CDN, app, database)
  • Cache invalidation strategies
  • Redis, Memcached, Varnish
  • Edge caching and regional optimization
  • Cache warming and pre-generation

Asset Optimization

  • Image compression and format selection
  • Video encoding and adaptive streaming
  • Font subsetting and variable fonts
  • SVG optimization and inline strategies
  • CSS/JS minification and tree-shaking

Performance Monitoring

  • Real User Monitoring (RUM)
  • Synthetic monitoring and alerts
  • Core Web Vitals tracking
  • Performance budgets and CI checks
  • A/B testing for performance changes

Performance Metrics We Target

Time to First Byte <200ms

Server response time—how quickly your server starts sending data.

First Contentful Paint <1s

When the first text or image appears on screen.

Largest Contentful Paint <2.5s

When the largest content element becomes visible (Core Web Vital).

Time to Interactive <3s

When the page becomes fully interactive and responsive to input.

Cumulative Layout Shift <0.1

Visual stability score—lower is better (Core Web Vital).

Total Blocking Time <200ms

Sum of all time periods where the main thread was blocked.

Speed Index <3s

How quickly content is visually displayed during page load.

API Response Time (p95) <100ms

95th percentile response time for backend API calls.

Our Performance Engineering Process

01

Baseline Measurement

We start by measuring current performance across real devices, networks, and geographies. Lighthouse, WebPageTest, and custom instrumentation establish the baseline.

02

Bottleneck Identification

Chrome DevTools, profiling, and distributed tracing reveal where time is actually spent. Database queries? Network latency? JavaScript execution? We find the actual bottlenecks.

03

Optimization Strategy

Not all optimizations have equal impact. We prioritize changes by their performance-to-effort ratio, focusing on the 20% of changes that deliver 80% of improvements.

04

Implementation

Code-level changes, infrastructure tuning, caching strategies, and database optimization. Every change is tested and measured before deployment.

05

Continuous Monitoring

Performance budgets in CI/CD pipelines prevent regression. Real user monitoring alerts us when metrics degrade in production.

06

Iterative Improvement

Performance engineering is never "done." As traffic patterns change and new features ship, we continuously measure and optimize.

Tools We Use

Profiling & Analysis

Chrome DevTools WebPageTest Lighthouse CI Bundle Analyzer

Monitoring

Datadog New Relic Sentry LogRocket

Database

EXPLAIN plans pgBadger Percona Tools Query analyzers

Caching

Redis Cloudflare Varnish CDN providers

Load Testing

k6 Artillery JMeter Gatling

Image Optimization

Sharp ImageMagick Squoosh SVGO

Ready to Make Your Application Faster?

Let's audit your current performance and build a roadmap for measurable improvements.

Get In Touch
Call 212-814-8366