Expletech engineers deliver premium performance optimization services for web apps, SaaS, and high-load IT platforms globally. Reach the green Lighthouse zone and maximize conversions.
Milliseconds cost real money
Slow products bleed revenue
Users abandon pages that take more than 3 seconds to load. Google demotes slow sites. Your competitors keep shipping — while you debug.
Without optimization
Users leave before the page even loads due to slow speeds
Google penalizes poor CWV (Core Web Vitals) and demotes rankings
Database queries choke and slow down under high user loads
Cloud bills for AWS/GCP rise uncontrollably due to unoptimized code
Bloated JS bundles block interface rendering on mobile devices
Slow API responses make users wait for every single action
With Expletech
Speed up load time to <1 second, recovering lost conversions
Fix LCP, CLS, and INP metrics to reach Google's Green Zone
Profile queries, add smart indexes, and set up Redis caching
Optimize infrastructure sizing and Brotli compression to save on bills
Tune rendering pipelines, apply tree-shaking, and split bundles
REST/GraphQL optimization reduces server response times to 100ms
End-to-end performance engineering
We fix performance from browser rendering pipelines to database queries — no surface left untouched.
Core Web Vitals & frontend
We eliminate render-blocking resources, fix CLS jumps, and optimize LCP to reach 90+ Lighthouse scores on mobile and desktop.
Database & API speed
We profile slow queries, add database indexes, introduce caching layers, and optimize API payloads to cut response times.
CDN & cloud infrastructure
Proper CDN settings, edge functions, HTTP/2, Brotli compression, and container tuning that make a measurable difference at scale.
Auditing & profiling
In-depth speed analysis using Lighthouse CI, WebPageTest, and Chrome DevTools to build a solid step-by-step optimization roadmap.
Caching & Redis integration
Setting up intelligent in-memory server caching to offload repetitive queries from your primary relational databases.
Load & stress testing
Stress testing using k6 to determine infrastructure breaking points before launching major marketing campaigns.
From slow to blazing fast
We follow a proven 4-phase optimization pipeline — from deep diagnostics to verified, stable, and measurable performance improvements.
Deep diagnostics
We audit Lighthouse scores, profile database queries, analyze JS bundle sizes, and map out every bottleneck.
Optimization roadmap
We prioritize fixes based on impact-to-effort ratio and plan rollout steps with expected improvements.
Implementation phase
We optimize frontend rendering, rewrite slow database queries, configure caching layers, and set up CDNs.
Validation & monitoring
We launch k6 load tests to verify stability, confirm Lighthouse scores, and configure real-time alerts.
Stability & blazing speed
We engineer highly reliable, fast-loading cloud systems for fast-growing businesses.
Transparent pricing for performance optimization
Clear, scope-based pricing tailored to your application complexity and performance goals. No hidden fees.
Audit & roadmap
Full Core Web Vitals analysis · database query profiling · detailed leakage report · step-by-step optimization roadmap
Continuous performance
Ongoing performance tracking · CI/CD regression prevention · periodic load tests · optimization of newly deployed features
Frontend CWV fix
LCP, CLS, and INP optimization · bundle-splitting & compression · CDN configuration · 90+ Lighthouse Mobile guaranteed
Full stack optimization
Frontend tuning · database query optimization · Redis caching integration · k6 load testing · APM setup
What determines your price
- Complexity of the application architecture (Next.js/React vs. legacy CMS)
- Infrastructure setup (CDN endpoints, database scale, cloud providers)
- Current Lighthouse/CWV score baseline and target performance goals
- Need for concurrent load testing and APM integration
Speed you can measure
We set measurable performance targets with you and report on them after every change.
Green Lighthouse zone
We guarantee entering the green zone (>90 score) on mobile and desktop, or we refund the cost.
Safe deployments
All optimizations are thoroughly staged and tested to protect live users.
Feature integrity
Your code becomes cleaner and faster without altering any UI layouts or business logic.
Regression defense
We integrate automated Lighthouse CI checks into your pipelines to maintain speed over time.
Comprehensive tech ecosystem
Companion services to keep your digital products fast, secure, and easily scalable.
From the blog
Practical articles about this service, from our team.
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Performance questions
Answers to what business owners and CTOs usually ask before starting a project.
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