delivery · CAT-30030779 · rev 1.0 |
Legacy React Modernization. @react-modernization
5.0Reviews ▾
Rated 5.0 / 5 by clients on GoodFirms.
Read verified reviews on GoodFirms →Vetted by Scrums.com Platform
Provider Scrums.com
Last review 2026-09-20
What you get
the numbers that matter≈ 2 weeks
signed to first PR
96%
engagements renewed
96%
to your stack & domain
Upgrade a legacy React application's architecture, dependencies, build system, and deprecated patterns to the current ecosystem baseline.
How this operator works
every way of working, already decidedOwns the system, not the ticket
Takes end-to-end ownership of a service or surface. Design, delivery, on-call. And is measured on outcomes, not hours.
Embedded, async-first, instrumented
Works inside your repos, your CI and your rituals. Daily written standups, decisions logged. No status-meeting tax.
Runbooks, canaries, reversible deploys
Every change gated and reversible. Incidents get a timeline and a postmortem; nothing ships without a rollback.
Plugged into your Slack & rituals
Joins standups and retros, reports weekly against the goal. You get an operator, not a queue.
Brings a pre-wired stack or adopts yours
Infrastructure and observability as code by default. No bespoke setup tax to absorb.
Scoped, gated, reversible
Week-1 shadow, week-2 ownership, swap on request inside the trial window. No long-tail handover risk.
Overview
React codebases age in layers: class components under hooks, a webpack config nobody owns, state management from three fashions ago, and dependencies pinned to make it all hold. This package modernizes a defined React application: current React version, migrated patterns, a fast modern build system, and a dependency tree brought back to supported ground. The finish state is a codebase your team ships in confidently, with build times and patterns that match the current ecosystem.
The work is staged by risk and value: dependency and build modernization first, since it unblocks everything else, then pattern migration, class components to hooks and current data-fetching and state approaches, concentrated on the code that changes most. Behaviour is protected by tests throughout, and the application remains releasable at every stage.
What's included
Dependency and build modernization
React and its ecosystem brought current, with the build moved to fast modern tooling.
Pattern migration
Class components, legacy lifecycles, and outdated state patterns migrated to current idioms where change earns it.
Architecture cleanup
Component boundaries, data flow, and shared-state structure reshaped for maintainability.
Verification throughout
Test coverage on affected paths, so modernization provably preserves behaviour.
How it works
- Scope: audit the codebase, dependencies, and build; agree the modernization order and criteria.
- Build: modernize build and dependencies, then migrate patterns in risk order with test cover.
- Handover: ship the modernized application, hand over conventions and the residual map.
Part of every Delivery Plan
The React Application Modernization is a menu item on the Scrums.com delivery catalog, available at every plan tier. Add it to your plan backlog and your delivery team schedules it like any other item — scoped, tracked, and reported through the SEOP. See Delivery Plan Tiers.
FAQs
Do you rewrite every class component?
No. Migration concentrates where code changes often or blocks other work; stable code that works is left working. The residual map records what stays and why.
Can this run alongside feature development?
Yes. The staging is designed for shared codebases: modernization lands in increments through the same review flow as features, without a frozen migration branch.
Our UI is also inconsistent. Is that in scope?
Visual consistency is a design-system problem rather than a modernization one. The Design System Starter Kit menu item addresses it, and pairs well once the codebase is current.
What's included
in every engagement · no add-onsTrack record
deployments on real systems · anonymized| Sector | System | Outcome | Span | Status |
|---|---|---|---|---|
| Fintech | payments-core ledger | 99.97% achieved | 14 mo | ● complete |
| Commerce | checkout platform | −38% incident rate | 9 mo | ● complete |
| Health SaaS | data plane | 0 SEV1 in 6 mo | 11 mo | ● active |
| Logistics | routing engine | zero-downtime cutover | 7 mo | ● complete |
| AI infra | inference cluster | p99 −120 ms | 5 mo | ● active |
Works inside your stack
surfaces this operator binds to| Surface | Binding | Direction | Auth |
|---|---|---|---|
| Source control | github.com/<org> | reviews + writes | OIDC |
| CI / CD | scm-flow · deploy-service | gates deploys | OIDC |
| Observability | otlp://collector:4317 | metrics + alerts | mTLS |
| Comms | slack://<workspace> | standups, incidents | SSO |
| Secrets | vault://scrums/op/<id> | short-lived creds | SPIFFE |
| On-call | pagerduty://<org> | primary / secondary | API token |
Boundaries
what to deploy insteadScoped to this discipline. For an adjacent capability, compose a second operator into the squad. compose →
Not a fractional advisory engagement. For advisory-only, contact platform@scrums.com.
Deployments
the only social proof we publish402deploys
across 38 organizations
+24 last 30 days · median age 11.4 mo · retention 96%
Pricing
one number · one footnoteAvailable at all Delivery Plan Tiers →
All-in: the operator, delivery manager and replacement guarantee. No recruiter fee, no markup surprises.
Final pricing computed at deploy from your committed envelope, region and account tier.
FAQ
common questionsHow is Legacy React Modernization priced?
Pricing is shown to signed-in accounts. Sign in to view the rate; pricing is computed from your engagement scope, region and account tier.
Is Legacy React Modernization available now?
Yes. It is published and deployable directly from the Scrums.com catalog.
Can a Legacy React Modernization deployment be reversed?
Yes. Deployments are reversible with a one-click swap inside the trial window.
Who provides Legacy React Modernization?
Scrums.com, vetted by the Scrums.com platform.
How it compares
vs other delivery| Option | From | Stack | Status |
|---|---|---|---|
| Legacy React Modernization · this one | 🔒 Sign in for pricing | delivery · outcome-driven-sprints · modernization | ● available |
| Codebase Quality Audit | 🔒 Sign in for pricing | delivery · code-audit · maintenance | ● available |
| Product Discovery Sprint | 🔒 Sign in for pricing | delivery · discovery · workshop | ● available |
| Clickable Product Prototype | 🔒 Sign in for pricing | delivery · prototyping · design | ● available |
Commonly deployed with
more deliveryRun this scope on your Delivery Plan
Core costs Was $8,000£6,700R140,000 now $4,500£3,750R79,000/month for one active workstream. Your scope sets the delivery schedule and the total cost. You can use the same plan for your other development work.
Add this scope to your backlog. Your delivery owner confirms the scope with you, and the team delivers it.
One plan for your software backlog.
Work is scoped and delivered within your plan’s capacity. Priorities can change; additional parallel workstreams require more capacity.