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Reaxios

Product engineering company

Engineering software that scales.

Reaxios designs, builds, and runs SaaS platforms, MVPs, and AI systems — and untangles the legacy software your business already depends on.

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You'll hear back from an engineer, not a salesperson.

Web clientReactAPINode.jsQueueeventsPostgreSQLprimaryAI serviceinferencedeploy — production$ git push origin main▸ build completed in 38s✓ migrations applied✓ deployed to production

Trusted technologies — the stack we run in production every week

  • TypeScript

    Language

  • React

    Frontend

  • Node.js

    Backend

  • PostgreSQL

    Database

  • AWS

    Cloud

  • Docker

    Containers

  • Kubernetes

    Orchestration

  • Terraform

    Infrastructure

Services

What we build

Six ways teams work with us — from the first commit of an MVP to owning an entire platform.

SaaS Development

Multi-tenant platforms built for growth: subscription billing, role-based access, admin tooling, and usage analytics from the first release.

  • Multi-tenant architecture
  • Billing & metering
  • SSO / RBAC

MVP Development

A production-grade first version in weeks, not quarters. Scoped tightly, instrumented for learning, built on foundations that survive v2.

  • 4–8 week launch cycles
  • Analytics baked in
  • No throwaway code

AI Solutions

LLM features that hold up in production — retrieval pipelines, agent workflows, and evaluation harnesses. Not demos.

  • RAG & vector search
  • Agent orchestration
  • Eval suites & guardrails

Legacy Modernization

Incremental migration of the systems your revenue depends on. Strangler-pattern rewrites, characterization tests first, no big-bang cutovers.

  • Strangler-fig migrations
  • Test harnesses first
  • Zero-downtime cutover

Cloud & DevOps

Infrastructure as code, CI/CD, and observability tuned for small teams that deploy daily and sleep at night.

  • Terraform baselines
  • CI/CD pipelines
  • Monitoring & SLOs

Custom Software

Internal tools, integrations, and services purpose-built for your workflows — for when off-the-shelf stops fitting.

  • Internal dashboards
  • API design & integrations
  • Data pipelines

Why Reaxios

Built like an engineering team, not an agency

The structure of most agencies optimizes for billable hours. Ours optimizes for shipped software.

5+ yrs

Senior engineers only
Every project is staffed by engineers with years of production systems behind them. No one learns the basics on your budget.

Week 1

Working software weekly
You review a deployed build in the first week and every week after. Progress is something you click, not a slide deck.

100%

You own everything
Code, infrastructure, and accounts live in your GitHub and your cloud from day one. Leaving us costs nothing but goodbye.

0

Layers between us
You talk directly to the engineers writing your code. No account managers, no project-manager relay, no telephone game.

Selected work

Recent engagements

Representative projects, anonymized under NDA. We'll walk through architecture and numbers on a call.

  • Fintech
  • SaaS platform

4 h → 11 min

daily reconciliation cycle

Reconciliation platform for a payments provider

Replaced a spreadsheet-driven back office with a multi-tenant platform that matches transactions across banks, PSPs, and internal ledgers — with a full audit trail.

  • TypeScript
  • Node.js
  • PostgreSQL
  • AWS
  • Logistics
  • MVP

6 weeks

from kickoff to first paying customer

Fleet operations MVP for a logistics startup

Scoped, built, and launched dispatch, live vehicle tracking, and driver mobile flows — instrumented from day one to validate pricing with the first customer cohort.

  • React
  • Node.js
  • PostgreSQL
  • Docker
  • Healthcare
  • Modernization

Quarterly → daily

release cadence after migration

Migrating a clinical scheduling monolith

Strangler-pattern migration of a decade-old monolith into containerized services — characterization tests first, zero downtime during cutover.

  • Kubernetes
  • Terraform
  • AWS

Process

From scope to scale

Four phases, each ending in something concrete you can read, click, or deploy.

  1. 01

    Scope

    A one-to-two-week sprint to de-risk the build. We map the domain, choose the architecture, and cut the first milestone plan — with a real estimate, not a range with a 3× spread.

    • Architecture proposal
    • Milestone plan
    • Fixed first-milestone quote

  2. 02

    Build

    Weekly cycles in a shared repository. Every pull request is visible, every merge deploys a preview, and every Friday you review running software.

    • Weekly demo builds
    • Preview environments
    • Open backlog

  3. 03

    Ship

    Production is set up in the first weeks, not the last. CI/CD, monitoring, alerts, and a rollback path exist before launch-day traffic does.

    • CI/CD pipelines
    • Observability stack
    • Rollback runbook

  4. 04

    Scale

    After launch we tune performance, reliability, and cloud spend — then hand over cleanly or stay on for the next roadmap. Your team, your repos, your call.

    • Load & cost review
    • Docs & runbooks
    • Handover or retainer

Tell us what you're building.

Describe the problem in a few sentences. An engineer — not a salesperson — will read it and get back to you within one business day.

Or write directly: hello@reaxios.com