TWO SENIOR ENGINEERS · REMOTE · BOOKING Q4

Zero-Debt Architecture & AI-Accelerated Engineering.

We build and rescue high-stakes web platforms, SaaS MVPs, and AI backends — always senior, never outsourced.

See the three disciplines
0.4s
Median TTFB shipped
Faster MVP delivery
vs. legacy agency workflows
20
Years combined
2
People you talk to
01 — What we do · 3 disciplines, one team

Three disciplines that compound into one system.

WordPress performance, SaaS and MVP builds, and the AI workflow that ships both faster — three disciplines, two people, no handoffs.

Pillar 01
WordPress

WordPress engineering

Problem: a plugin-stacked site that fails Core Web Vitals and burns ad spend on bounces.

Extreme Core Web Vitals optimization and custom WordPress / WooCommerce builds. Zero-bloat, no page builders — hand-written themes against a render budget.

Metric
Before
After
LCP
4.1s
<0.4s
INP
480ms
92ms
JS shipped
1.8MB
140KB
Pillar 02
SaaS · MVP

Full-stack SaaS & AI MVPs

Problem: an MVP quoted in quarters, built to be thrown away before it has users.

Custom MVP development on Node.js with multi-tenant architecture from the first commit. Ships in weeks, not quarters, and grows instead of getting rewritten.

Multi-tenant data model, typed boundaries
Queue-first services, observability day one
CI/CD with tests and DB migrations
Pillar 03
The Multiplier

AI-accelerated delivery

Problem: AI in the stack either as a demo that breaks under real users, or not at all.

AI and API integrations, RAG pipelines, and the AI-assisted workflow that speeds up Pillars 01 and 02. Scaffolding lands 2–3× faster; anything that carries risk stays hand-written and senior-reviewed.

Faster MVP delivery vs. legacy agency workflows, same review bar
02 — The pivot

AI-assisted delivery, senior-reviewed
code.

We use AI where it compounds (scaffolding, tests, migrations, data plumbing) and hand-write everything that carries risk. An MVP in weeks, on a Node.js backend that survives its own success.

Workflow

AI-accelerated build loop

Boilerplate, CRUD, tests and types come from the model. A senior rewrites auth, money, or data integrity — the split that stopped a migration from silently dropping a not-null constraint before production without coordination tax.

Backend

Node.js built to scale sideways

Every service gets its own queue and contract before the AI writes a line of it. That boundary is what lets us catch a race condition in review instead of finding it in an incident channel of being rewritten at Series A.

LLM layer

RAG and agents in production

Every retrieval answer runs through an eval set before launch and a cost ceiling after it. It's the difference between an agent that cites its source and one that quietly hallucinates a customer's order number, not under demo-day traffic.

03 — Selected work

Four systems,
two authors.

Two projects each. Live where noted, and every callout below is a fact from the build, not a case-study estimate.

Atlas

for internal use only

Self-hosted AI project OS: Jira-style work items, Notion-style docs and GitHub-style issue tracking over one durable project memory, so coding agents (Claude Code, Cursor, Codex) keep full context between tasks.

3-in-1.
AI project OS · Serhii

Leantric

leantric.com ↗

Zero-bloat B2B platform architecture, hand-written against a render budget. Sub-400ms LCP in the field, with a live "$0 invoice" performance guarantee attached to the contract from day one.

100/100.
PageSpeed · Kostiantyn

Gamified English-learning PWA built end-to-end on Next.js 16, React 19 and Supabase. Four connected roles (student, teacher, parent, admin) on one backend, with cached AI-generated vocabulary imagery and full CI/CD on every merge.

4 roles.
1 Supabase backend · Serhii

RestoFixer

restofixer.com ↗

Autonomous PDF-to-WordPress pipeline on Node.js and Gemini AI. Parses unstructured service manuals into structured WordPress content and SEO schema, published without a human in the loop.

<2 min.
Per document · Kostiantyn
04 — The duo

No middlemen.
No junior outsourcing.

The two people who scope your project are the two people who write it. Every commit carries a senior name.

Serhii

Serhii

Senior React and Node.js Engineer / AI Architect

Designs the backend and AI layer for SaaS MVPs: event-driven Node.js services, retrieval pipelines, evals, and strict cost control. Ships secure systems that stay debuggable at scale, long after launch.

LinkedIn
Kostiantyn

Kostiantyn

Senior web performance engineer / Infrastructure architect

A QA background turned into a performance obsession: ten years finding what breaks before it ships. Rebuilds rendering paths, caching, and hosting infrastructure to hold 100/100 Core Web Vitals under real traffic.

LinkedIn
05 — How we work

Fixed price. Fixed scope. Senior only.

Scoped work (a WordPress rebuild, an MVP, an AI/API integration) gets a written scope and a fixed price before a line of code ships. Ongoing support, retainers and open-ended work get billed hourly at a transparent rate. Either way: no account managers relaying your spec to a junior team.

06 — FAQ

Three questions we get every time.

Fixed price or hourly — how do you decide?

Scoped, defined work gets a fixed price agreed before anything ships — a WordPress rebuild, an MVP, an integration. Ongoing support, retainers and open-ended exploration get billed hourly at a transparent rate. You'll know which one applies before you sign anything.

How much does this cost?

  • Projects start at $5000 for a scoped WordPress performance rebuild.
  • SaaS MVP and AI integration work typically runs $5000–$15000
    Every engagement gets a written scope and fixed price before any code ships.
  • For ongoing support and retainer work we bill hourly at $100/hr.

Who actually writes the code?

The two of us. 20 years combined, no juniors, no outsourced contractors, no agency layer between you and the commit. The two people who scope your project are the two people whose names are on every pull request.

Start here

Start a project.

Tell us what you're building or what's broken. Within five working days you get a scoped plan and a fixed price to execute it.

Prefer a call? Book time ↗ hello@lumatriq.com
Fixed price · Fixed Scope · Senior only