Engineering & Software Development

Internationalization Engineer

Making an app genuinely translation-ready involves more than wrapping strings in a translation function, pluralization rules, right-to-left layout, and locale-specific date and number formatting all break silently if they're not handled correctly. We implement ICU MessageFormat, RTL and bidirectional layout support, and CLDR-based formatting, and run full i18n audits to find where an app will actually break when it hits a new locale. This is for products expanding into new markets, especially RTL languages, where a surface-level add-translations pass isn't enough. You get an app that's actually ready for the locales you're targeting, verified against real translated content.

This is a capability we deliver for you as a service, not a role we’re hiring for.

How We’d Approach This

A clear, staged plan, not a black box

These are the service-specific steps inside our six-step process.

1
Audit the codebase for hardcoded strings, formatting assumptions, and layout that won't survive RTL or pluralization.
2
Implement ICU MessageFormat and RTL support on one representative section and test with real translated content.
3
Review the pilot section with native speakers or a localization team to confirm it reads and functions correctly.
4
Complete the i18n implementation across the app with CLDR formatting applied consistently.

What You Get

Deliverables from this engagement

i18n implementation with ICU MessageFormat across the app
RTL and bidi layout support verified with real content
i18n audit report identifying remaining locale risks
CLDR-based date, number, and currency formatting

Six Ways We Could Architect This

Different engagement, different build, pick the shape that fits

There’s more than one way to deliver on this service. Browse a few of the ways we’d structure the work, depending on your speed, budget, and integration needs.

Read all 6 architectures as text

Lean Fast-Start Architecture

Source App

React Component Tree
Hardcoded English Strings

Extraction

String Extraction Script
ICU MessageFormat Keys

Lean Translation

Translation JSON Files
Community Translator

Runtime

i18n Library Loader
Locale Switcher
Basic RTL CSS Flip
Number Format Helper
Date Format Helper
Manual QA in Target Locale

Cloud-Native / Managed Services Architecture

Application Layer

Web App Frontend
Mobile App Frontend

Managed Translation Stack

Cloud TMS Platform
ICU MessageFormat Catalog
CLDR Locale Data Service
Machine Translation Provider
Professional Linguist Review

Content Delivery

Translation CDN Bundle
Locale Detection Service
RTL Bidi Rendering Engine

Operations

Locale Coverage Dashboard
Missing Key Alerting

Event-Driven & Automation-First Architecture

Triggers

Developer Commits New String
Translation Vendor Webhook

Automated i18n Pipeline

Auto Extract to ICU Keys
Push to Translation Queue
Machine Translation Draft
Human Linguist Queue
Auto CLDR Format Validation
Auto RTL Snapshot Test

Automated Gate

Pseudo Locale Test Pass
Failure Notification

Deploy

Auto Merge Translation Bundle
Locale Bundle Deployed

Enterprise-Grade & Compliance-Ready Architecture

Localization Governance

Terminology Glossary
Brand Voice Style Guide
Locale Compliance Policy

Audit Trail

Translation Change Log
Reviewer Sign Off Record
Version Locked String Catalog

Enterprise i18n Build

ICU MessageFormat Engine
CLDR Regional Formatting
Full Bidi Layout Engine
Legal Text Locale Variant

Redundancy

Multi-Region Translation Store
Fallback Locale Chain

AI-Augmented, Human-in-the-Loop Architecture

Source Content

New Product Strings
Existing Locale Catalog

AI Localization Layer

AI ICU Format Suggestion
AI Machine Translation Draft
AI Bidi Layout Risk Scan
AI Pluralization Rule Check

Human Review Checkpoint

Linguist and Engineer Review
In Context Locale Preview

Release

Approved Locale Bundle
Production Rollout
Sent Back for AI Revision
Post Release Locale Monitoring

Integration-Heavy / Ecosystem-Connected Architecture

Client Stack

Product Codebase
Content Management System
Customer Support Platform

i18n Core Services

ICU MessageFormat Service
CLDR Formatting Service
Bidi Rendering Middleware

Ecosystem Integrations

Translation Management System
Marketing Automation Tool
Analytics Locale Segmentation

Two Way Sync

String Sync Webhook
Locale Usage Feedback Loop
Support Ticket Locale Tagging

Ready to get started?

Tell us what you’re trying to get done and we’ll help you find the highest-leverage place to start, scoped small enough to prove itself before you commit to anything bigger.

Talk to us about Internationalization Engineer

Most engagements like this start as a $500–$2,500 pilot, see full pricing.