Serving Kolkata, India remotely

Custom software developer in Kolkata

Bengali is my native language, so for Kolkata businesses I can scope custom software in Bengali, Hindi or English, which matters when the people who run the process are not comfortable in English screens. I build back-end systems, trackers and integrations in stages, with tests and documentation, remotely from India on the same time zone. I have no office in Kolkata, so we work on video calls.

Based in India and working remotely: no office in Kolkata, and video calls at times that suit you. Kolkata and I are both on UTC+5:30, so there is no time-zone difference and the working day overlaps in full. Many Kolkata offices, schools and clinics work Monday to Saturday, and some corporates Monday to Friday; calls are set around your pattern, including the long Durga Puja holiday period when many businesses slow down.

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

Custom software development for Kolkata businesses

Many Kolkata teams work in Bengali every day, and software that only accepts English names, addresses and notes soon gets bypassed. I design data entry, search and printed output to handle Bengali text properly, including names typed in Bengali script and in Roman letters, so that one person is not stored as three records. A simple screen can show labels in Bengali for staff and English for managers. Clinics and nursing homes in Ballygunge and Salt Lake can use the same approach for patient registers and appointment reminders; patient data falls under the Digital Personal Data Protection Act, 2023, so access is by role and every change is recorded.

Demand in Kolkata moves with the calendar, and software has to cope with spikes. Caterers, banquet halls and wedding services around Park Street and Ballygunge see enquiries jump before wedding months and Durga Puja. A booking system holds dates, menus, advances and balances so two parties are never confirmed for the same hall, and quotations are produced from your own menu and rate rules. Schools and coaching centres see a rush around results and admission dates, so an enquiry tracker assigns each parent to a counsellor and shows who has not been called back. I add queues and limits so a burst of messages does not lose any.

Traders in Burrabazar and manufacturers around Howrah and the industrial belt have older ways of working, and I respect them. The usual first project is small: dealer orders captured from messages into one list, outstanding invoices with scheduled reminders, a dispatch register that replaces a handwritten book. Invoices carry the GSTIN and tax breakup required, tested against sample invoices your accountant has checked. I start with the one chore that costs the most time, prove it works beside your current method for a few weeks, and only then retire the old one.

Working with a remote specialist from Kolkata

Time zone
Kolkata and I are both on UTC+5:30, so there is no time-zone difference and the working day overlaps in full. Many Kolkata offices, schools and clinics work Monday to Saturday, and some corporates Monday to Friday; calls are set around your pattern, including the long Durga Puja holiday period when many businesses slow down.
How projects there are usually paid
Kolkata businesses mostly pay by NEFT, RTGS or cheque to a bank account, with UPI for smaller sums. Traders and companies expect a GST invoice with the supplier's GSTIN, and some deduct TDS, so I suggest settling invoicing details in the quote. Local currency: INR.
Languages
English, Bengali, Hindi
Rules that apply
The Digital Personal Data Protection Act, 2023 applies to student and patient data collected on enquiry forms, so purpose and consent should be stated clearly.

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 Kolkata: questions

Yes. I handle Bengali script in names, notes and search, and can show Bengali labels to staff and English to managers, with printed output that renders Bengali text correctly.

Yes. It would hold dates, menus and advances, block double bookings, produce quotations from your own rules and queue a burst of enquiries so none is lost.

Yes. Bengali is my native language, so we can talk in Bengali, Hindi or English, and I write the scope document in English or a mix that your team finds clearest.

No. I work remotely from India and have no office in Kolkata. Meetings are on video during your working hours, and in person only if you arrange it.

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.

Yes. Bengali is my native language, along with fluent Hindi and professional English, so I can discuss the project and write or edit Bengali page and ad copy myself.

More for Kolkata

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 Kolkata: 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 Kolkata | Sunny Guha