Replace the system the business runs on, without stopping the business.
Robust, scalable systems for core operations — architecture-first, strongly typed, secure from day one, and migrated in stages so the work never has to pause for the upgrade.
Understanding the discipline
What enterprise software really carries.
Enterprise software is the system a business actually runs on — the place orders, records, approvals, and money move. It is rarely the newest thing a company owns and almost always the most load-bearing, which is exactly why replacing it feels dangerous.
The risk is never the new system on its own. It is the cutover — moving live operations from something fragile and half-understood onto something new without losing a day of work or a row of data. Handled in stages, that stops being a leap and becomes a sequence.
Core systems moved from “keep it running” to “it decides how fast we can move.”
Standing still on old software became more expensive than replacing it.
Migration stopped being one risky launch and became a staged, reversible sequence.
The system of record became the thing every other tool has to agree with.
Legacy modernisation
An old, fragile platform re-architected and migrated in stages, without a big-bang cutover.
Custom business systems
ERP, workflow, and internal tooling built to how the business actually runs, not to a package's assumptions.
Integration & consolidation
The systems that don't talk connected into one source of truth, so the data stops disagreeing.
The business case
Why businesses invest in enterprise software engineering.
Returns that show up on the business, not on the engineering backlog.
- 01
Fragility replaced with maintainable code
Typed, tested, and documented, so a change stops being a risk that only two people in the building can carry.
- 02
Lower total cost of ownership
One system your team can extend, instead of a licence and a specialist billed for every modification.
- 03
Faster, safer releases
A pipeline and a rehearsed rollback turn deployment into a decision rather than an event the business schedules around.
- 04
Scale you won't outgrow next year
Architecture built for the load expected in year three, not only for the load present on the day it launches.
What we build & capabilities
The things you can commission — and what each one ships with.
Defined engagements, one at a time: the thing itself on screen, and the capabilities that come with it.
01 / 06
Legacy modernisation
An old, fragile platform re-architected into a typed, tested codebase and migrated in stages — so the system stops being understood by two people and the business never pauses for the upgrade.
Capabilities
- Architecture review
- Staged migration
- Data migration
- Zero-downtime cutover
- Full documentation
Business outcomes
Where the business is today, and what changes.
The operational difference, in the terms the business already measures itself in.
Scalable, maintainable systems
Lower total cost of ownership
Faster, safer releases
Industries we serve
The same discipline, shaped to your sector.
Regulation, procurement and legacy estate differ by industry — and the engagement is shaped around them, not in spite of them.
Our engineering process
How the engagement actually runs.
Every stage has an owner, an output, and a point where you can change direction.
01
Discovery
How the business actually runs today, and where the current system is genuinely the constraint.
02
Architecture
The target design, data model, and integration boundaries, chosen for year-three load.
03
Migration plan
The sequence of stages, each independently shippable, each with a way back.
04
Build
Typed, tested increments delivered against clear acceptance, not a single distant milestone.
05
Data migration
Cleaned, validated, and reconciled so the numbers match on both sides of the move.
06
Security & quality
Access model, encryption, and automated testing verified before anything goes live.
07
Cutover
A phased, rehearsed switch, with the old system on standby until the new one is proven.
08
Handover & support
Runbook, documentation, and a team that keeps improving the system it built.
Why Sumago
Why teams choose Sumago.
The technology partner serious businesses build with — and stay with.
Business understanding first
We understand the business before writing a line of code.
Strategic consulting
A consultative partner, not just a development shop.
Multidisciplinary team
Analysts, architects, designers, engineers, cloud & AI specialists, QA.
Transparency
Clear communication in every engagement.
Engineering quality
High standards, scalable and secure architecture.
Long-term partnership
Support and improvement long after delivery.
Technology ecosystem
Mainstream technology, chosen so you can hire for it later.
The stack is a means, not a position. It gets chosen against your constraints — and it stays maintainable by people who aren't us.
- Slack
