Performance Engineering
We engineer speed into the product, not as a post-launch patch. Budgets for LCP, CLS, and TBT. Load path discipline. Server profiling. Monitoring that shows cause and effect. Based in Kingston, PA 18704. Built for teams that need repeatable wins.
Approach
Principles That Keep Sites Fast
- Budgets set in planning, enforced in CI/CD.
- No unbounded dependencies. Every library needs a job and an owner.
- Prefer native features over plugins when practical.
- Measure before and after. No “felt faster.” Only deltas.
- Rollback points with small increments, not giant merges.
Discovery
Audits That Produce Actionable Fixes
Vitals Baseline
Field + lab data. Segmented by template, device, and geography.
Dependency Map
Scripts, styles, fonts, and images by priority and owner.
Server Profile
TTFB, cache status, hot queries, indexes, and object cache hit rate.
Media & Fonts
Formats, sizes, preloads, fallbacks, and cumulative cost.
Plugin Review
Replace or remove offenders. One job per plugin or it’s out.
Risk Register
Bottlenecks and trade-offs ranked with owner and timeline.
Metrics
Core Web Vitals With Margin, Not Bare Minimums
- LCP: prioritize hero media, reduce critical bytes, and deliver early hints.
- CLS: intrinsic sizes, reserved space, and animation discipline.
- TBT/INP: split bundles, hydrate less, and move work off the main thread.
- TTFB: cache rules, object cache, query caps, and edge hints.
- Templates tracked separately so one outlier doesn’t hide the truth.
Frontend
A Disciplined Load Path
- Critical CSS only. Defer everything else. Remove dead rules.
- Async/Defer scripts with conditions. No render-blocking by default.
- Font strategy: system stacks when possible; otherwise preconnect, preload, and swap.
- Images: next-gen formats, responsive sets, and intrinsic ratio boxes.
- Route-level budgets so marketing pages stay lean under growth.
Server
Backend Performance That Scales
- Hot query review. Add the missing index or rewrite the query.
- Object cache and transients with expiry aligned to business rules.
- Queue work. Avoid doing heavy jobs in request/response.
- HTTP caching: vary policy for anonymous vs. authenticated users.
- Edge and CDN tuned for assets and HTML separately.
Ops
Monitoring That Explains Changes
Field Data
Vitals by template and country. Tie regressions to releases.
Release Notes
Every deploy gets a 2-line note and a rollback tag.
Error Budgets
Thresholds for script errors and slow queries with alerts.
Uptime + TTFB
Server timing headers confirm where the time went.
Inclusive
Accessibility Improves Perceived Speed
- Readable content order and landmarks for assistive tech.
- Keyboard paths and focus states that reduce friction.
- Contrast and motion preferences respected by default.
Risk
Security Hardening That Doesn’t Hurt Speed
- Least privilege, token scopes, and secret storage.
- Nonce checks, prepared statements, and output escaping.
- Dependency hygiene with known-issue pruning and pinned versions.
Method
A Simple, Repeatable Process
Plan
Set budgets, map dependencies, and define success metrics.
Build
Ship small, measure deltas, and keep rollback points ready.
Operate
Monitor vitals and errors. Upgrade on schedule. Remove bloat.
Serving Kingston, PA 18704 and the NEPA region.
FAQ
Common Questions
Do you fix Core Web Vitals failures?
Yes. We address LCP, CLS, and TBT/INP with template-specific work.
Will changes break SEO?
No. We respect semantics, internal links, and structured data.
What about plugins?
We replace heavy plugins with lighter patterns or API code.
Who owns the changes?
You do. We deliver code, notes, and rollback instructions.
Next Step
Make Your Site Feel Instant
Corevexa Labs • Kingston, PA 18704 • (570) 977-8709 • [email protected]