Serving Mumbai, India remotely

Custom software developer in Mumbai

In Mumbai, custom software usually starts where a busy desk is held together by spreadsheets and WhatsApp: a broker's account-opening queue, a redevelopment society's member consents, a production house's crew bookings. I build the system around that process, with tests, plain documentation and the source code in your name. I work remotely from India on Indian time and have no office in Mumbai, so we meet on video.

Based in India and working remotely: no office in Mumbai, and video calls at times that suit you. Mumbai and I are both on UTC+5:30, so there is no time-zone difference and the whole working day overlaps. Most offices in Mumbai work Monday to Saturday, or Monday to Friday in larger corporates, and I can schedule calls around either pattern, including early or late slots that avoid the long commute hours.

$400K+
Monthly ad spend managed
500+
Global brands scaled
12+
Years in performance marketing
22–30x
Peak ROAS (healthcare / IVF)

Custom software development for Mumbai businesses

Finance and wealth firms around Nariman Point and Bandra Kurla Complex tend to have one expensive problem: a lead becomes a client through a dozen small steps, and nobody can see where each one is stuck. A tracker that records identity documents received, forms signed, funds confirmed and the person responsible, with a reminder when a step sits idle, removes most of the chasing. Where the rules are exact I write the test first. I have built and backtested more than 100 automated trading strategies, so I am used to systems where a rounding error or a missed edge case costs real money, and I bring that habit to client reporting and reconciliation tools. I do not touch your trading or banking accounts; the software works from exports and the official interfaces you authorise.

Redevelopment is the Mumbai project type I would approach with the most care. A society may have a hundred members, a developer, a project consultant and a committee, and the open question at any moment is who has signed what and who is still undecided. A shared register of members, flats, consent status, meeting dates, documents and follow-up calls replaces the many versions of the same sheet that circulate by message. The register should also show the project's MahaRERA registration number wherever buyer-facing pages are produced from it, because property advertising in Maharashtra is expected to carry it. Member data falls under the Digital Personal Data Protection Act, 2023, so access is limited by role and every change is logged.

For media houses in Andheri East and event firms in Lower Parel, the pain is scheduling and money: crew and equipment booked twice, advances recorded in one place and invoices raised in another. I would model bookings, availability and payments once, connect them to your accounting tool through its official interface, and produce a clear invoice that carries the GSTIN where the client is registered. D2C brands in the suburbs get the same treatment for cash-on-delivery reconciliation, matching courier remittances against orders so that unpaid parcels show up in a list instead of at the end of the quarter. I deliver in stages, each demonstrated on a staging link before the next begins.

Working with a remote specialist from Mumbai

Time zone
Mumbai and I are both on UTC+5:30, so there is no time-zone difference and the whole working day overlaps. Most offices in Mumbai work Monday to Saturday, or Monday to Friday in larger corporates, and I can schedule calls around either pattern, including early or late slots that avoid the long commute hours.
How projects there are usually paid
Mumbai companies commonly settle professional fees by NEFT or RTGS to a bank account, with UPI used for smaller amounts. Registered businesses expect a GST invoice, and many corporate and financial-services clients deduct TDS before paying, so it helps to agree the invoicing details in the quote. Local currency: INR.
Languages
English, Hindi, Marathi, Gujarati
Rules that apply
Property advertisements in Maharashtra are expected to show the MahaRERA registration number of the project, which affects landing pages and ad copy.

What custom software development covers

Scope document
the process, rules, data and must-never-fail cases in plain language.
Working software
the system for the agreed stages, running on hosting in your name.
Integrations
connections to your existing tools through their official APIs, with retries and logging.
Data migration
a reconciled import with counts, totals and a list of exceptions.
Reports
the numbers you used to assemble by hand, produced automatically.
Audit trail
a record of automated actions and changes, with alerts for failures.

Custom software developer in Mumbai: questions

Yes. I would build a register of members, flats, consent status, documents and follow-ups, with role-based access and an audit log, so the committee and developer see the same current picture instead of several spreadsheets.

No. I work remotely from India with no office in Mumbai. We meet on video at times that suit your day, and a visit happens only if you arrange or travel for one.

Often yes. If your CRM, accounting tool or messaging service offers an official API or export, I connect to that, add retries and logging, and avoid replacing tools that already work.

I limit access by role, log changes, collect only what the process needs and keep personal data out of error logs. I name the Act in the design but this is engineering practice, not legal advice.

Look for a process that costs staff hours every week, a spreadsheet nobody dares to touch, or tools that cannot be connected. If a subscription tool already covers most of it, I will recommend that and only build what is missing.

It depends entirely on scope, so I do not quote a number from a title. After the scope document I give a fixed price per stage, or an hourly estimate with a cap, so you can decide stage by stage without a surprise.

No. I work remotely from India and do not run a Mumbai office. Calls, screen-shares and WhatsApp cover almost everything, and an in-person meeting is possible only if you arrange it.

More for Mumbai

Custom software developer elsewhere

How the work runs

  1. 01

    Walk through the process

    A call to see how the work happens today, who does it, where time is lost and what has gone wrong before.

  2. 02

    Write the scope

    A plain-language document of steps, rules, data, integrations and must-never-fail cases, reviewed and signed off by you.

  3. 03

    Plan the stages

    A split into stages that each deliver something usable, with a schedule and a list of what comes later.

  4. 04

    Build and demonstrate

    Working software shown on a staging link at the end of every stage, with tests for the rules written alongside.

  5. 05

    Migrate and run in parallel

    Data imported in a copy, reconciled against the source, then both systems run side by side before the cut-over.

  6. 06

    Launch and hand over

    Production setup, alerts, documentation, a recorded walkthrough and 30 days of fixes.

Custom software developer for Mumbai: get a quote

Tell me the goal; you get a plain answer and a fixed quote, usually within one working day.

Fastest reply on WhatsApp — usually within a couple of hours.

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Custom Software Developer in Mumbai | Sunny Guha