CodeWave Consulting logoCodeWave Consulting
Legacy → Cloud-Native

Modernize the systems
your business runs on.

CodeWave Consulting decomposes monoliths, migrates mainframes, and re-platforms regulated workloads onto resilient, cloud-native architectures — with zero downtime and audit-grade traceability from day one.

Initiate refactoring assessmentExplore services
420+
Systems modernized
99.99%
Average migration SLO
0
Production cutover incidents
Live · Engagement Pipeline
Core banking ledger62%
Strangler-fig · phase 3/5
Telecom OSS billing28%
Domain decomposition
Supply chain WMS91%
Cutover validation
Mainframe COBOL bridge14%
Discovery
The CodeWave method

Refactoring, without the rewrite trap.

Most modernization programs fail not because the technology is wrong, but because the cutover is treated as an event instead of a discipline. We treat your legacy estate as a living system and migrate it the way surgeons operate on a beating heart — incrementally, observably, reversibly.

Strangler-fig migration

We wrap legacy domains in modern interfaces, then redirect traffic service-by-service until the legacy core is dark — never a Big-Bang rewrite.

Parallel-run validation

Every cutover runs both systems concurrently with diff-based reconciliation, catching subtle behavioral drift before customers ever see it.

Audit-grade lineage

Every refactor commit is mapped to a domain event, an architectural decision record, and a regulator-ready change ticket.

Interactive · drag to compare

Before / after modernization.

The same ledger workload, before and after a CodeWave engagement. Drag the divider to see what changes when a 1.4-million-line COBOL batch becomes an event-driven service mesh.

COBOL.MAIN — TSO/E SESSION 001 ──────────────────
> IDENTIFICATION DIVISION.
> PROGRAM-ID. LEDGER-BATCH-77.
> ENVIRONMENT DIVISION.
> INPUT-OUTPUT SECTION.
> FILE-CONTROL.
SELECT TXN-FILE ASSIGN TO 'TXN.DAT'.
SELECT GL-FILE ASSIGN TO 'GL.DAT'.
> DATA DIVISION.
> WORKING-STORAGE SECTION.
01 WS-BATCH-ID PIC 9(8).
01 WS-AMOUNT PIC S9(11)V99 COMP-3.
> PROCEDURE DIVISION.
PERFORM POST-LEDGER UNTIL EOF-TXN.
CALL 'CICS-COMMIT'.
⚠ JOB JCL0457 RUNTIME 04:32:18 — BATCH WINDOW EXCEEDED
✗ DEPLOY: requires 6-week change board approval
Before · Monolithic Mainframez/OS · DB2 · CICS
After · Cloud-Native Mesh
service
api-gateway
service
ledger-svc
service
txn-stream
service
auth-svc
service
audit-log
service
graphql-bff
Deploy frequency
42×/day
P99 latency
38 ms
K8s · gRPC · Kafka · PostgresSLO 99.99%
⇆
Batch window
4h 32m → 38ms
Deploy cadence
Quarterly → 42×/day
Mean time to recovery
11h → 4m
Audit prep
6 weeks → continuous
Technical reference architecture

A stack chosen for longevity, not novelty.

We deliberately bias toward boring, mature, polyglot tooling — the kind that will still be maintainable a decade from now. Below is the canonical reference stack we deploy across engagements; every component is selected for operational resilience and regulatory fit.

Languages & Runtimes

  • Goservice core
  • Java 21JVM workloads
  • TypeScriptBFF / edge
  • Rusthot paths
  • Pythondata / ML
  • COBOL ↔ Javabridge

Platform & Orchestration

  • KubernetesEKS / GKE / AKS
  • Istioservice mesh
  • ArgoCDGitOps
  • TerraformIaC
  • Crossplanecontrol plane
  • CiliumeBPF networking

Data & Streaming

  • PostgreSQLOLTP
  • Kafkaevent backbone
  • DebeziumCDC
  • ClickHouseanalytics
  • Rediscache / queues
  • Apache Iceberglakehouse

APIs & Integration

  • gRPCinternal
  • GraphQL FederationBFF
  • Kong / ApigeeAPI gateway
  • OpenAPI 3.1contracts
  • MuleSoftlegacy ESB
  • Kafka Connectingest

Observability & Security

  • OpenTelemetrytracing
  • Prometheusmetrics
  • Grafanadashboards
  • Vaultsecrets
  • SPIFFE/SPIREworkload identity
  • Falcoruntime security

Cloud & Edge

  • AWSprimary
  • Azureregulated
  • GCPdata
  • Cloudflare Workersedge compute
  • OpenStackprivate cloud
  • Knativeserverless

Ready to map the path off your legacy core?

Complete our 6-question code assessment and our architects will respond within 48 hours with a refactoring tier and an engagement outline.

Begin assessment →