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Upgrade · Engineering

Version bumps, security patches - low-risk, high-value.

Java 8 → 21. Node 14 → 22. React 16 → 19. Spring Boot 2 → 3. Plus CVE audits, dependency sweeps, test coverage backfill. Fixed-bid. Zero feature regression. Engineered inhouse - no offshore CVE-of-the-week panic.

  • Java / Node / React / .NET major-version bumps
  • CVE audit + dependency sweep + lockfile cleanup
  • Test coverage backfill (currently 30% → 70%+ typical)
  • You own the code, day one - repo + infra access transferred
Send your stack - we'll send a plan 15 min, no SDR
Upgrade dashboard · Spring Boot app
14yr
App age
237
CVEs fixed
62%
Coverage gained
0
Outages
☕
Java 8 → 21 (LTS)6 sprints · phased per module
Done
🌿
Spring Boot 2.7 → 3.4Auto-config refactor done
Done
🔒
237 CVEs cleanedSnyk + dependabot wired up
Clean
Why bother upgrading

Old runtimes cost more than upgrades.

Security debt compounds

Every month on EOL runtime = more CVEs unpatched, more compliance findings, more attack surface. One upgrade = years of audit relief.

Performance free

Java 21 alone gives 15-30% throughput vs Java 8 (Generational ZGC). Node 22 vs 14 = 2x faster on most workloads. Free wins.

Hiring gets easier

Senior engineers don't want to maintain Java 8 / jQuery / React 16. Upgrade your stack = upgrade your hiring pool.

Six upgrade tracks we run

What gets bumped, safely.

Java 8 → 21 (LTS)

Multi-step: 8 → 11 → 17 → 21. Spring Boot 2 → 3 in lock-step. Module path, records, virtual threads adopted.

Node 14 → 22

ESM migration, fetch built-in, deprecated API cleanup. TypeScript bumped from 4.x → 5.x.

React 16 → 19

Class components → hooks, Suspense, automatic batching, Concurrent features, Server Components where useful.

DB engine upgrades

MySQL 5.7 → 8.4, Postgres 11 → 16, Mongo 4 → 7. Schema migrations, perf tuning, connection pool rework.

CVE / dependency audit

Snyk + Dependabot + npm audit + OWASP. Patch all critical/high CVEs. Lockfile rebuilt. Re-pinned versions.

Test coverage backfill

30% → 70%+ typical. Unit + integration + key flows in Playwright. CI gates on coverage going forward.

How we keep it safe

Six sprints, zero outages.

Upgrades fail when teams try to do everything at once. We split into 2-week sprints, each with its own rollback plan.

  • Branch per sprint · merge after full regression pass
  • Feature flags + canary deploy + 1-click rollback
  • Production traffic shadowing before cutover
  • Observability baseline preserved across versions
  • Postmortem-free track record across BFSI + EdTech + Manufacturing
Upgrade sprint plan · 12 weeks
1
Sprint 1: Java 8 → 11Module path, removals · 2 weeks
Done
2
Sprint 2: Java 11 → 17Records, sealed types · 2 weeks
Done
3
Sprint 3: Java 17 → 21Virtual threads · 2 weeks
Live
FAQ

Things teams ask before signing.

How long does a major upgrade take?
2–8 weeks depending on app complexity. Java 8 → 21 with Spring Boot major bump typically 6 sprints (12 weeks). Smaller frontend upgrades 2–4 weeks. Fixed-bid per sprint.
What's the cost?
From $799 for a small framework / dependency upgrade. $3,000–$8,000 for full Java / Node / React major-version migration. Test backfill + CVE audit included.
Will it break our features?
No - that's the whole point of phased sprints + canary + rollback. We've shipped 19 builds with zero post-upgrade outages. Every sprint goes through full regression in test before merge.
Can your team work alongside ours?
Yes - we usually pair with your team. We do the heavy lift; your team reviews + ships features in parallel on the same codebase. Slack access, code reviews, daily syncs as needed.
Send us your stack

Tell us what's EOL. We'll send a real plan.

BFSI, EdTech and manufacturing teams have upgraded with us, zero outages. Send your current versions - Java, Node, React, DB, framework - we'll come back with a phased plan, fixed quote per sprint, and the engineer who'll lead it.

Send your briefTalk to an engineer · 15 min