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Replace the system the business runs on, without stopping the business.Enterprise Software Engineering

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.

A core system only two people fully understand
A typed, tested, documented codebase any engineer can maintain
Every change to the platform is a risk nobody wants to take
Changes shipped in small, reversible increments
A licence and a specialist billed for every modification
One system your own team extends, at a lower total cost
Data that disagrees between disconnected tools
One source of truth every system reconciles against
A replacement that means stopping the business to switch over
A staged migration that keeps operations running throughout

Scalable, maintainable systems

Lower total cost of ownership

Faster, safer releases

Our engineering process

How the engagement actually runs.

Every stage has an owner, an output, and a point where you can change direction.

  1. 01

    Discovery

    How the business actually runs today, and where the current system is genuinely the constraint.

  2. 02

    Architecture

    The target design, data model, and integration boundaries, chosen for year-three load.

  3. 03

    Migration plan

    The sequence of stages, each independently shippable, each with a way back.

  4. 04

    Build

    Typed, tested increments delivered against clear acceptance, not a single distant milestone.

  5. 05

    Data migration

    Cleaned, validated, and reconciled so the numbers match on both sides of the move.

  6. 06

    Security & quality

    Access model, encryption, and automated testing verified before anything goes live.

  7. 07

    Cutover

    A phased, rehearsed switch, with the old system on standby until the new one is proven.

  8. 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.

Architecture-firstCertified engineeringStaged, reversible migrationSecure by designBuilt to hand over

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.

Node.js / NestJSReact / Next.jsPostgreSQLCloud-native
  • Slack

Proof of work

Work that has already shipped.

Real engagements, named clients, and what changed for the business behind them.

An AI Voice Workforce That Never Misses a Customer
Professional Services

An AI Voice Workforce That Never Misses a Customer

Client challenge
Every business depends on conversations it cannot always be present for. Calls arrive after hours, during a rush, or faster than the team can pick up — and each unanswered ring is a ready customer who simply moves on to whoever answered first. The traditional fix is to hire, train, and roster more people, yet capacity always runs thinnest at the exact moments demand peaks. Leaders are left choosing between the cost of over-staffing and the cost of missed opportunity.
Our solution
An AI-powered voice automation platform that works as an always-on virtual agent for the business. It holds natural, human-like conversations with every caller — understanding what they want, answering their questions, qualifying their intent, and scheduling meetings while their interest is still high. It works around the clock, handles a surge of conversations at once without a queue, and captures every interaction directly into the systems the business already runs on, so a call ends not in a note to follow up later, but in a qualified opportunity in motion. ### The platform Two connected layers — the agent customers experience, and the platform the business controls it from: - **The AI Voice Agent** — *for the customer.* The always-on virtual agent every caller actually speaks to — understanding intent, answering questions, qualifying interest, and booking meetings in natural conversation. *How it helped:* ensured no caller ever hit a dead end, capturing round-the-clock demand that used to slip away to whoever answered first. - **The Web Control Platform** — *for the business.* The command center where leadership sees every conversation and lead, tracks performance, and steers how the agent behaves. *How it helped:* turned an automated channel from a black box into a managed, trusted part of operations — full visibility and control over an autonomous workforce. ### Architecture highlights - **Event-driven, asynchronous core** — calls, transcriptions, and follow-up actions flow through an event pipeline, so nothing blocks and every step stays independently reliable. - **Horizontally scalable, stateless services** — capacity scales out on demand to absorb call surges without a queue or a dropped conversation. - **Resilient integration layer** — CRM, calendar, and telephony connect through an isolated, fault-tolerant layer, so a third-party hiccup never takes the agent down. - **Real-time streaming to the control platform** — live call data pushes to leadership's view over a streaming channel for instant visibility. - **Secure by design** — token-based access and encrypted handling of every customer interaction. ### Technology stack Built on the **MERN stack** (MongoDB · Express.js · React · Node.js) for a fast, real-time web platform, integrated with conversational-AI, speech, and telephony services.
Business impact
The result is a front door that never closes. Genuine demand is captured the moment it appears instead of cooling overnight; every customer receives the same confident, on-brand experience; and the team is freed from repetitive call handling to focus on the high-value conversations that need a human touch. In a market where the business that responds first usually wins, always answering becomes a durable, compounding advantage.

Conversational AI · Natural Language Understanding · Voice Synthesis · CRM Orchestration · Calendar Automation · Performance Intelligence