React is an open-source JavaScript library for building user interfaces from reusable components.
15+ years of team experience · Salesforce Select Partner · Delaware and Sydney
React development for the screens your customers and staff use every day.
We build and take over React portals, dashboards and front ends, move them to React 19 and current tooling, and supply React engineers who join your team.
See the upgrade paths
- 15+Years of team experience
- 3Ways to engage: project, team or extension
- 60 minFree React review, with a written plan
- 5.0/5Client satisfaction (CSAT)
Proven Success With
5.0/5 CSAT
New to React?
What is React?
Since February 2026, React and React Native are governed by the React Foundation, part of the Linux Foundation.
React 19 is current, and the React Compiler, stable since October 2025, automates much of the memoization teams used to write by hand.
Where you are starting from
Where are you with React?
What state is your React front end in today?
- Path 01Not built yet
A new React build
You need a portal, dashboard or front end and want it on React 19 and current tooling.
- Screens and states agreed before code
- Vite or Next.js chosen for fit
- Tests and accessibility from the first sprint
- Path 02Built by a team that left
Taking over a front end
A React app is live and the people who built it have moved on.
- Code, state and build review first
- Component and data flows mapped
- Fixes ranked by risk
- Path 03On old React or tooling
Upgrading or modernizing
It works, but runs on React 16 to 18, Create React App or class components.
- Libraries checked for React 19
- Upgrade done in tested steps
- Class components moved to hooks
A React front end on current versions, with tests, documentation and a team that can run it
What we do
What do our React development services include?
One team for the screens, the components behind them and the upgrades that keep them current.
New React applications
01Portals, dashboards and single-page apps built from a written design.
Design systems
02Shared, accessible components your teams reuse across products.
Front ends for your APIs
03React screens on top of your back end, with data fetching done properly.
React upgrades
04React 16 to 18 moved to 19, and Create React App to Vite or Next.js.
Performance and accessibility
05Slow screens, large bundles and WCAG 2.2 AA issues found and fixed.
Testing
06React Testing Library, Vitest and Playwright in your pipeline.
Salesforce integration
07React apps that show and update Salesforce data through a secure back end.
Team extension
08React engineers who work in your repos, rituals and tools.
Technology
The React stack we work with
From the framework and build tool to the tests that guard each release.
- Next.js
- Vite
- React Router
- React 19
- React Compiler
- Tailwind CSS
- TanStack Query
- Redux Toolkit
- Zustand
- React Testing Library
- Vitest
- Playwright
React upgrades
How do we upgrade an older React app?
Most React upgrades are a library upgrade and a build tool change done together. Next.js 14 and earlier no longer get support.
TodayReact 16 to 18 on Create React App
- React 19
Move to React 19
React and the libraries around it updated, class components moved to hooks, and the React Compiler adopted where it fits.
Best when the build setup already works well.
- Vite
Leave Create React App for Vite
The app stays a single-page app, on a faster build and current tooling.
Best for dashboards and apps behind a login.
- Next.js 16
Move to Next.js
For apps that need server rendering or search visibility. Next.js 16 is the Active LTS line; Next.js 15 gets security fixes to January 31, 2027.
Best for public pages, stores and content.
How we work with you
How can we work together on React?
Three ways to engage. Each starts with a written proposal agreed before work begins.
- Fixed-scope project
A defined React deliverable, built and handed over.
- We direct the work against agreed milestones
- Priced per milestone in the proposal
- Working screens, tests and documentation
- Fits a new front end, an upgrade or a rescue
- Dedicated team
A React team that runs your front end with you.
- Our lead runs delivery, you set priorities
- Billed on a monthly plan
- Engineers, a lead and testing as one unit
- Fits ongoing product work without an in-house team
- Team extension
React engineers added to the team you already run.
- Your managers direct the day-to-day work
- Billed monthly for each engineer
- Vetted engineers; we handle employment and replacement
- Fits a backlog bigger than your current team
How it runs
How does a React engagement start?
Five steps from the first call to delivery.
- Brief
- Free 60-minute review of your front end
- Goals, constraints and access agreed under NDA
- Match or design
- Engineers matched and interviewed by you
- Or a scope and milestone plan written
- Start
- Accounts, repos and environments set up
- Codebase walkthrough and a first task
- Build and review
- Sprints with code review on every change
- Tests and a demo each sprint
- Hand over or continue
- Component docs and handover sessions
- Or a monthly plan for support
Cost and timing
What it costs and how long it takes
The review is free
A 60-minute architecture review of your React front end setup, with a written plan you keep.
A fixed-scope proposal first
Before any work starts you get a written proposal: a fixed-scope project with milestones, or a monthly plan. You approve it, or you do not.
Timing follows scope
How long it takes depends on what is in scope. The proposal states the milestones, so you see the timeline before you commit.
Client stories
Client work we have delivered
Real engagements, described by industry. Each story covers the starting position, what we built and how we delivered it, end to end.
Commercial & Business ServicesA Subscription Estimator and Technical Library for Fire Protection ProfessionalsA Next.js web application for a fire protection business: a searchable technical library and estimator with role-based access, manufacturer filtering, PDF output and subscriptions, with AI product identification in development.Next.js · Custom web application · Authentication and roles · SubscriptionsRead the story 
Communications, Media & TechnologyA Bilingual Knowledge Base That Answers Callers During a Major International EventA bilingual English and Japanese knowledge base for contact centre operators at a major international event: live answer suggestions, cross-language search with translated embeddings, operator content management and missing-question tracking.Custom AI · Vector search · Translated embeddings · Large language modelsRead the story 
EducationOne Tutoring Calendar Across Salesforce and TeachWorksSalesforce development for an Australian tutoring provider: a custom session calendar, two-way TeachWorks appointment sync, attendance and completion mapping, and session notes into after-session reports.Salesforce Platform · Lightning Web Components · Apex · TeachWorks APIRead the story Client reviews
What clients say about working with our architects
See how teams describe working with SynconAI, from first scope to production delivery.
Salesforce Select Partner30+ Salesforce certificationsDelivery from Delaware & Sydney, worldwide
Simply Outstanding
“SynconAI Consulting are Simply the Best in the Business When it comes to Salesforce implementation and AI-powered solutions, SynconAI are in a league of their own. Their expertise, dedication, and ability to deliver results that truly move the needle sets them apart from every other consulting partner we've worked with. What they achieved with our Sales Cloud, Service Cloud, and custom Agentforce agent has completely transformed how we operate streamlining our pipelines and our customer service, and automating tasks that used to consume hours of our team's time. They don't just implement technology they transform businesses. If you want the best, you work with their team.”
Sales CloudService CloudAgentforce
Jack BennettConsumer Goods & Retail · United States
“I had a very urgent deadline for our project reporting to be delivered and needed to build the module, dashboard and output reports in Salesforce. SynconAI were very responsive - they met with me online, responded to my emails quickly and took calls - whatever was needed to progress the work quickly. We are thrilled with the outcome and will continue to work with SynconAI in the future to continue to build our Salesforce capability and platform.”
Sales CloudService CloudNonprofit Cloud
Salesforce Managed ServicesAustraliaSalesforce Verified
“The team at SynconAI were fantastic, and promptly delivered on each project. They were able to guide us through every stage and made sure we were satisfied with the outcomes on multiple scopes of work.”
Sales CloudSlackFlowAgentforceMuleSoft
ManufacturingAustraliaSalesforce Verified
“They have been great and helping us transform out business by bringing what I conceptualize to life. Great at translating process/workflow needs into a solution. Been a pleasure work with and they're a critical part of our team and will be instrumental into bringing about my vision.”
Sales CloudFinancial Services CloudArchitectureAI
Financial ServicesUnited StatesSalesforce Verified
“Working with SynconAI was a seamless and highly professional experience from start to finish. They took the time to deeply understand our business processes before designing and implementing a Salesforce solution tailored specifically to our operational needs. The team demonstrated strong technical expertise across Salesforce configuration, automation, integrations, reporting, and user experience design.”
SalesforceExperience CloudCustom DevelopmentAutomationReporting
Salesforce ImplementationSalesforce Verified
Frequently asked questions
React development, answered.
Straight answers about what we build, React upgrades, how engagements work and how our engineers join your team.
Single-page apps and dashboards, customer portals, e-commerce front ends, design systems, embedded widgets and front ends for headless CMS sites.
Yes, if you plan to keep the app. React 19 is current and the React Compiler has been stable since October 2025. If you use Next.js 14 or earlier, that is already unsupported.
Three ways: a fixed-scope project with milestones, a dedicated team on a monthly plan, or engineers who join your team. Each starts with a written proposal agreed before work begins.
Yes. They work in your repos, tools and sprint rituals, and your managers direct the day-to-day work. We handle employment, and the replacement terms are written into the contract.
Each engineer passes a technical interview on React and TypeScript, a practical coding exercise and a review by a senior engineer. You interview them and decide before anyone starts.
Yes, through a back end that holds the OAuth credentials and connects through Salesforce APIs, so no secret reaches the browser. Inside Salesforce itself, the UI framework is Lightning Web Components.
We work from hubs in Delaware and Sydney and deliver remotely worldwide on your business hours. The agreed overlap with your team is written into the contract.
React is a trademark of the React Foundation. Next.js is a trademark of Vercel, Inc. Vite, Redux, TanStack, Tailwind CSS, Playwright, Lightning Web Components and Salesforce are trademarks of their owners. SynconAI is an independent consulting firm and is not affiliated with or endorsed by the React Foundation.
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