Custom software · Specialism 03 of 04

Legacy Modernization and Migration

Move off the system that everyone is afraid to touch.

We move you off the system nobody wants to touch, one slice at a time, so you get the benefits of modern software without the all-or-nothing rewrite that so often stalls.

Start a projectBook a 30-min call
Discipline
Custom software
Related
SaaS development, Internal tools, API integration
Cadence
Two-week shipping rhythm
Team
Expert engineers and designers
Source code
Yours from commit one

Trusted by city corporations, retailers and founders across the Gulf, Europe, Bangladesh and beyond.

Verified onClutch
Al Tawash Al Maliky TailoringThe Flutter WayDhaka North City CorporationAl Ataar Al Maliky TailoringNaqsha Mens TailoringSpecial TailoringDhaka South City CorporationAl Ataar Golden Tailoring & Trading974 TailoringTelehawks SolutionsAlgonize
A deeper look

Everything to know about legacy modernisation.

Algoramming modernises legacy software for teams across the UAE, Qatar, Saudi Arabia, the US, the UK, and Australia. We work behind the strangler pattern, replacing an ageing system piece by piece with no downtime, so the business keeps running, data moves safely, and your team ends up with a codebase a new engineer can read.

Written for the people buying the product and for the people who will run it after launch.

01

Incremental legacy modernization beats a big-bang rewrite

The full rewrite is the project most likely to fail, because it asks the business to wait months for value while carrying the old system anyway. We prefer the strangler pattern: stand a modern layer in front of the legacy system, move one capability across at a time, and route traffic to whichever side owns it. The old system shrinks release by release, the business never stops, and you can pause or re-sequence whenever priorities change.

02

Safe data migration is where legacy modernization succeeds or fails

Most migration pain is data pain: mismatched types, silent truncation, records that were never as clean as anyone believed. We profile the real data first, write migrations that are reversible, and reconcile row counts and checksums on both sides before any cutover. Where the legacy schema hides business rules, we surface them into code and tests, so the knowledge stops living only in one person's head.

Outcomes

Outcomes, not deliverables.

Success is measured in shipped value you can use, in two-week increments.

Two-week shipping rhythm
  1. 01

    A risky, ageing system retired without a big-bang cutover

  2. 02

    Data migrated with verification, not hope

  3. 03

    Faster delivery once the modern surface takes over

  4. 04

    Documentation and tests so the next change is not frightening

What we deliver

Concrete artifacts, not slide decks.

Everything lands in your repositories, your cloud and your control.

  • A modernisation roadmap with sequencing and risk notes
  • Incremental replacement behind a strangler facade
  • Verified, reversible data migration scripts
  • Test coverage and documentation for the new surface
Process

The same expert team, the same playbook.

The first release is scoped to the smallest version that proves its worth. Everything after that is a measured increment.

01Phase 01 · 1 to 2 weeks

Discover

We map your workflows, edge cases, and the metrics that matter before writing a line of code.

02Phase 02 · 1 to 2 weeks

Design

We prototype the riskiest screens and integrations early so decisions are made on real interactions.

03Phase 03 · two-week sprints

Build

We ship in two-week iterations against a clear backlog, with code review and CI from sprint one.

04Phase 04 · 1 week

Launch

We deploy to your cloud with infrastructure-as-code, runbooks, and a quiet go-live plan.

05Phase 05 · ongoing

Support

We watch metrics, respond to incidents, and keep shipping improvements on a steady cadence.

Selected work

Software we are proud to put our name on.

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Sparrow: A Serverless, Peer-to-Peer Photo and Video Sharing App

Sparrow is a serverless, peer-to-peer photo and video sharing app built by Algoramming. Your phone becomes a live host and the people you invite connect directly, so photos and videos stream device to device over encrypted WebRTC, never uploaded, never stored in the cloud.

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From Storefront to Doorstep: How Algonize Gives Multi-Branch Businesses One Real-Time Command Center
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From Storefront to Doorstep: How Algonize Gives Multi-Branch Businesses One Real-Time Command Center

Algonize is the cloud ERP, CRM and POS platform built in Dhaka for multi-branch retail shops, restaurants and delivery businesses. This case study shows how one real-time dashboard unifies sales, inventory, riders, loyalty and accounting across Android, iOS, macOS and the web.

3 Client apps6 Platforms8 Payment methods
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From clients

Hear it from the people who run the software.

Reviews verified onClutch
“We’re happy with the DSCC Waste Management System developed by their team. It has made our daily operations, data tracking, and reporting much easier to manage. The team was professional throughout the project, and their ongoing support has been really helpful whenever we needed assistance. Overall, a great experience working with them.”
Md. Sufi Ullah Siddik BhuiyanProject Director, Matuail Sanitary Landfill Development & Extension Project, DSCC
“We’ve been using their DNCC Vehicle Equipment Management System for almost a year, and it has made managing our equipment and stock records much easier. The team is professional, friendly, and always helpful whenever we need support. Overall, it’s been a really good experience working with them.”
Abul Hasnat Md. Ashraful AlamChief Executive Engineer, DNCC
“I've been using this CRM software for the last 2 years and it has truly transformed how we handle our operations. This software is a game-changer in terms of efficiency and functionality. A top-notch software solution that has exceeded our expectations. Really appreciate themselves. The after-service of their product is just outstanding.”
Iftekhar Hossain MunnaFounder, Al Tawash Al Maliky Tailoring
Why teams stay with us

A partner you can trust with the whole thing.

No sales layer, no junior swap-ins, no surprise invoices. This is what every client gets, in writing, before work starts.

01

Experienced people on the work

The engineer who scopes your project reviews every line that ships. Nobody is swapped out for a junior after the kickoff.

02

Costed before we build

A one-to-two-week discovery ends in an itemised plan. After that, two-week sprints, each with a recorded demo and a changelog you can forward to your board.

03

You own everything

Source code, infrastructure, domains and secrets live in your accounts from day one. A walk-away clause is written into every contract.

04

We stay after launch

Monitoring, incident response and small improvements, with a named human who answers. Urgent tickets under a maintenance contract are handled around the clock.

Ways to work together

Three shapes, one playbook.

Every engagement starts with a short discovery that ends in a costed, itemised plan. No rate-card surprises, no minimum-month lock-in.

Fixed scope · Fixed price

Project

Discovery through launch and handover, for one agreed price and date.

Best when the brief is clear and the deadline is firm.

Monthly · Fixed expert allocation

Retainer

A rolling backlog we re-rank together, with the same experienced people every month.

Best when priorities change faster than annual planning.

Per engineer · Monthly

Embedded

Our engineers join your Slack, repos and sprint board as part of your team.

Best when your in-house engineers need expert support.

Stack and toolkit

Pragmatic tools. Expert judgement.

Well-supported tools your future hires already know, chosen for the years of maintenance after launch.

Interface
Next.jsReactTypeScriptFlutter
Application
Node.jsPythonGoREST and GraphQL
Data and APIs
PostgreSQLSupabaseRedisMessage queues
Cloud and delivery
AWS or Google CloudDockerTerraformGitHub ActionsSentry
Industries we ship for
FintechSaaSE-commerceRetail and POSPublic sectorCRMERPEdTechHealthcareLogisticsReal estateMedia
FAQ

Things teams ask before signing.

Something else on your mind? Email us and a lead engineer answers within one business day.

Can you work with a system in a language we no longer hire for?

Yes. Part of the value of the strangler approach is that the old stack keeps running untouched while the new capabilities land on a stack you can actually staff.

How do you avoid downtime during migration?

We cut over one capability at a time behind feature flags, with the old path ready as an immediate fallback. Most steps are invisible to users.

What if we cannot afford to modernise everything?

You do not have to. We sequence by risk and value, so you can stop once the painful parts are handled and leave stable pieces as they are.

What is the strangler fig pattern, and why do you use it?

It means standing a modern layer in front of the old system and moving one capability across at a time, so the legacy system shrinks release by release. We use it because it replaces the risk of a big-bang cutover with small, reversible steps the business never feels.

Legacy modernization or a full rewrite: which do we need?

A full rewrite is rarely the right first move, because it asks the business to wait months while carrying the old system anyway. Incremental modernization delivers value sooner and lets you stop when the painful parts are handled. We recommend a rewrite only when the old code truly cannot be extended.

How much does legacy modernization cost, and can we do it in stages?

Cost tracks the number of capabilities moved and how tangled the data is, so staging is built in: we sequence by risk and value and quote stage by stage. A short assessment gives you a roadmap and a cost for the first slice before you commit to the rest.

Do we own the source code?

Yes. Source, infrastructure configuration and documentation are pushed to your repositories from day one, and the cloud accounts stay in your name. If we part ways, you keep everything and nothing stops working.

How long does a first version take?

A focused v1 usually takes three to six months, shipped in two-week increments you can test as they land. A clickable prototype typically exists within fourteen days of the brief.

Can you work in our timezone?

Yes. Our team works on GMT+6, with at least six hours of daily overlap with the Gulf, Europe, the UK, the US and Australia, and demos are recorded for anyone who missed the call.

What happens after launch?

We keep watching the metrics, respond to incidents and ship small improvements under a maintenance agreement, for as long as you want us. Runbooks and monitoring are in place from day one, so nothing depends on memory.

Explore the rest of custom software

The discipline, and its other specialisms.

All nine services
Discipline

Custom Software Development

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Specialism

SaaS Product Development

Multi-tenant products built to onboard, bill, and scale.

Specialism

Internal Business Tools

Replace the spreadsheet-and-tabs system of record.

Specialism

API and Systems Integration

Make your tools talk to each other, reliably.

Go deeper on legacy modernisation
Next move

Send the brief. We will take it from there.

Reply within one business day, NDA on request, and a free 30-minute discovery call before anything is priced.

Start a projectBook a 30-min call
ReplyWithin 1 business day
DiscoveryFree 30-min call
EngagementFixed scope or retainer
Overlap6+ hours, any region

support@algoramming.com · GMT+6