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Quantlix
QuantlixEngineering pod

Legacy Modernization

Production-grade Legacy Modernization delivered by senior engineers.

Update and transform legacy systems

  • Senior pod
  • Real ownership
  • Short cycles
  • Auditable
Trusted in
EnergyHealthcareFinanceManufacturing
  • 0+
    Projects shipped
  • 0%
    Success rate
  • 4.9/5
    Client rating
  • 0+
    Industries served
What it is

A senior pod focused on the outcome you need.

Small senior pod
3-6 senior engineers + a partner
Cycle
2-week sprints
Cadence
Weekly review

Update and transform legacy systems

We embed with your team, run short cycles, and ship working software. Legacy Modernization is a discipline we own end to end - from architecture through production support.

What you walk away with
  • Production-grade implementation
    Tested, observable, deployed.
  • A measurable outcome
    Metrics agreed up front, evidence at the end.
  • Knowledge your team owns
    Architecture docs, runbooks, on-call training.
Capabilities

What you get when we engage.

Each engagement covers these capabilities by default. We tune the mix to your problem instead of selling a fixed package.

  • 01

    Architecture & design

    End-to-end legacy modernization architecture sized to your problem, not a template.

    • Clear blueprint
    • Risk surfaced early
    • Cost transparent
  • 02

    Production delivery

    We ship, not slides. Tests, observability and deployment are built in from week one.

    • Working software
    • Tested code
    • Real telemetry
  • 03

    Operate & evolve

    After launch we stay close, hardening the system and helping the team own it confidently.

    • Knowledge transfer
    • Support cadence
    • Iterative improvements
Reference architecture

Three layers. One spine. Tuned to your stack.

Every legacy modernization engagement we ship sits on the same spine: a clean separation between the source systems, the intelligence layer and the surfaces your operators actually use. We adapt each layer to your stack, governance and delivery model, not the other way around.

  • Source of truth
    Your existing systems, datasets and event streams stay authoritative. We integrate cleanly, we do not force a migration.
  • Intelligence & orchestration
    Models, rules, workflows and controls turn raw data into decisions your teams can inspect and improve.
  • Operator surfaces
    Dashboards, APIs and workflow tools are built for the people using the system every day, not for a demo.
Reference flow
live
SourcesQuantlix layerSurfaces
Postgres
Blob storage
Streams
Partner APIs
Quantlix
  • Ingest
  • Models & rules
  • Observability
healthyp50 · 42ms
Dashboards
REST APIs
Workflows
Mobile
Adapts to your stackDiscuss yours
Outcomes

What changes after we ship.

Measurable signals from recent legacy modernization engagements. Yours will be specific to your baseline - agreed before we start, evidenced at the end.

  • 0%
    Faster time-to-production
    Average across recent engagements.
  • 0%
    Fewer production incidents
    After our hardening cycle.
  • Higher engineering throughput
    By the end of quarter one.
  • 0%
    Auditable by design
    Every decision logged and reviewable.
How we deliver

Ship in weeks. Learn in days. Compound forever.

A lean operating model built for the AI era - discovery, MVP, production, evolution. We work in two-week loops with embedded GenAI tooling, instrument outcomes from sprint one, and hand over a system your team genuinely owns.

  1. Phase 011-2 weeks

    Discover & frame

    Translate the business outcome into a sharp hypothesis. Map constraints, surface risk, and pick the one slice worth proving first.

    Deliverables
    • Outcome brief
    • Risk register
    • Feasibility cut
  2. Phase 021-3 weeks

    Prototype & validate

    Ship the thinnest viable slice end-to-end. Real data, real users, AI-assisted tooling - proves the bet before we scale the team.

    Deliverables
    • Working prototype
    • Eval harness
    • Decision log
  3. Phase 034-12 weeks

    Build & instrument

    Senior pods deliver production-grade code in two-week loops. SLOs, traces and observability ship with the first release, not the last.

    Deliverables
    • Working software each sprint
    • SLOs + tracing
    • Test coverage
  4. Phase 04Ongoing

    Operate & evolve

    Stay close after launch. Runbooks, retraining cadences and a quarterly outcome review - so the system keeps compounding, not decaying.

    Deliverables
    • Runbooks + on-call
    • Retraining cadence
    • Quarterly outcome review
In production

Built for the worst hour, not the demo hour.

Legacy Modernization engagements ship into environments where uptime, auditability and clear human override matter on day one. Every system we build assumes someone will get paged at 2am - and prepares for it.

  • Observable from minute one
    Tracing, metrics and structured logs ship with the first slice.
  • Safety boundaries by default
    Failure modes simulated and bounded before features get added.
  • Operators in the room
    We design with the people who'll run the system, not at them.
Legacy Modernization in production
app.quantlix.com / production
v2.4
All systems nominal
p50 latency
42ms
↓ 12%
Uptime
99.98%
30d
Daily events
12.4M
↑ 8%
Legacy Modernization
Live in production · 24/7
Discuss yours
Technology stack

What we build with.

We pick tools for fit, not familiarity. Most engagements stay close to the stack you already run, with deliberate additions where they earn it.

  • TypeScript
  • Python
  • Go
  • PostgreSQL
  • Redis
FAQ

Common questions.

Don't see yours? Just ask.

Reply in 1 business day
From a senior engineer, not a sales pipeline.
  • Most engagements start with a 1-2 week discovery, then run as embedded squads in two-week sprints with a senior partner overseeing delivery from kickoff to handover.
  • Production-shaped slices typically land within 4-6 weeks. We optimise for visible progress over big-bang releases.
  • Yes. Most clients keep us on a smaller cadence after launch for hardening, support, and the next iteration of work.
Start the conversation

Ready to talk about Legacy Modernization?

Send us a brief. A senior engineer reads every one and replies within one business day, with an honest read on whether we're the right fit.

  • Reply in 1 business day
  • NDA on request
  • Senior engineer, not sales