India vs Vietnam offshore development: which one fits your project?

India vs Vietnam offshore development: the short answer

India vs Vietnam offshore development is not a contest one country wins outright; each fits a different way of working. Vietnam suits Japanese companies that want to keep every conversation in Japanese, while India suits teams that can write specs and hold meetings in English.

That single question, the working language, decides more than rates or headcount. A Japanese SI company handing over a 200-page 詳細設計書 wants engineers who read it without translation friction, and many Vietnamese vendors have built their whole delivery model around that. A Tokyo SaaS company whose engineering channel already runs in English, or whose CTO came from abroad, gains little from a translation layer and a lot from direct access to engineers who work in English every day.

The second question is the kind of work. Maintaining or extending a system designed in Japan, with fixed screens and detailed specifications, plays to the strengths of Japan-focused Vietnamese vendors. Building something new around machine learning, data pipelines, cloud architecture or a modern JavaScript stack plays to India’s strengths, because that is where Indian engineers have spent years working for American and European product companies.

The third question is scale. Large vendors exist in both countries. What India also has, in quantity, is small specialist teams like ours: three freelance developers who can take a focused project end to end. If you need twenty people next month, a small team is the wrong answer in either country.

• Everything in Japanese, detailed design docs, closest time zone: lean Vietnam.
• English-capable owner, AI/data/cloud-heavy scope, iterative delivery: lean India.
• Small, specialist, well-defined project: a small Indian team is worth a quote.
• Large programme needing dozens of engineers: a large vendor in either country.

Why do so many Japanese companies offshore to Vietnam?

Japanese companies choose Vietnam mainly for language and proximity: many Vietnamese vendors train engineers in Japanese, staff projects with bridge SEs, and sit only two hours behind Tokyo. That combination lets a Japanese project manager run offshore work much as they would run a domestic subcontractor.

It is worth understanding this honestly before you compare. Over the years, Vietnamese vendors built Japan-facing divisions, Japanese language classes for engineers, and sales offices in Tokyo and Osaka. Many are comfortable with Japanese quality expectations: detailed test specifications, defect tracking in Excel, formal acceptance, and the habit of 報連相 (reporting, contacting and consulting) that Japanese managers expect. For a buyer whose staff do not work in English, that is a real advantage, not marketing.

Proximity helps too. Vietnam uses Indochina Time, seven hours ahead of UTC, and does not observe daylight saving time, so Hanoi and Ho Chi Minh City are always exactly two hours behind Japan. Flights are short, so on-site visits and short stays by vendor staff are practical.

None of this makes Vietnam the right answer for every project. It makes Vietnam the default for a certain kind of project: Japanese-spec development, testing and maintenance, managed in Japanese by people who already know how to manage domestic subcontractors. If your project looks like that, a Vietnamese vendor is a sensible choice and you should shortlist several. If it does not, the reasons that made Vietnam popular may not apply to you, and that is where the India vs Vietnam offshore development comparison becomes interesting.

Bridge SE or English-first delivery: which suits your team?

A bridge SE is worth paying for when your people cannot or will not work in English; English-first delivery is better when they can, because every translation step removes detail and adds delay. Be honest about which describes your team today, not which you hope it will describe next year.

A bridge SE (ブリッジSE) sits between your Japanese team and the offshore engineers. They translate specs, attend meetings, relay questions and check that answers come back complete. A good one is valuable. The trade-off is that your engineers never talk directly to the person writing the code, and nuance can get lost in both directions, especially on edge cases and on “why” questions.

When you evaluate a bridge SE, ask for their Japanese level in concrete terms. The Japan Foundation and JEES run the Japanese-Language Proficiency Test, which has five levels from N5 up to N1, the most difficult. A certificate does not prove someone can explain a tricky database migration in a meeting, so hold a short technical call with the actual person who will be assigned.

English-first delivery, which is how BtechWaleTech works, removes that layer. You write tickets in English (screenshots and short Loom-style videos help a lot), we ask questions in the same thread, and the developer who builds the feature is the one who answers. It is faster when it works, but it asks something of you: at least one person on your side who reads and writes technical English comfortably and can make decisions.

India vs Vietnam time difference with Japan: 2 hours vs 3.5 hours

Vietnam is two hours behind Japan and India is three and a half hours behind, and neither country changes its clocks, so the gap is the same all year. In practice, Vietnam overlaps almost your whole working day, while India overlaps your afternoon.

India Standard Time is UTC+5:30 and Japan Standard Time is UTC+9, so 09:00 in Bengaluru is 12:30 in Tokyo. A Japanese team starting at 09:00 JST will have its first morning hours before an Indian developer’s day begins, and Indian developers who work until 18:30 or 19:00 IST are reachable until 22:00 or later in Japan if needed. Vietnamese teams start at around 11:00 JST in Japanese terms, so your whole afternoon and part of your morning overlap.

How much the extra ninety minutes matters depends on how you work. Teams that hold a morning standup with offshore engineers and expect answers within the hour, all day, feel the difference. Teams that write clear tickets, review pull requests the next morning and keep one afternoon call barely notice it. We plan around the gap: your questions from the morning are waiting for us when we start, and your afternoon is the window for calls, reviews and decisions.

There is also a small upside to India’s gap. Work that finishes late in the Indian day lands in Japan the next morning, ready for review before your standup. For some product teams, that rhythm of “ask in the afternoon, review in the morning” is a feature rather than a cost.

Is India cheaper than Vietnam for offshore development?

Neither country is reliably cheaper; rates overlap heavily, and the total cost of India vs Vietnam offshore development depends more on the model (bridge SE, lab team, fixed scope) and on rework than on the headline rate. Anyone who quotes you a simple “country X is 30% cheaper” is giving you a sales line.

Compare total cost, not the monthly rate per engineer. A Vietnamese lab team with a bridge SE includes translation and coordination that you would otherwise do yourself. An English-first Indian team does not include that, so the hidden cost is your own staff time spent writing clear English specs. Both are real costs; the question is which one your organisation can absorb.

Rework is the biggest invisible line. A misunderstood specification costs the same in either country: someone builds the wrong thing, someone else finds it in testing, and a week disappears. Choose the model that gives you the fewest misunderstandings for your particular team, even if its rate is a little higher.

Here is how our side of the comparison is priced. Custom software and web apps start at US$900 and usually take 6–12 weeks. Android and iOS apps start at US$600. AI automation starts at US$600. A static corporate site starts at US$150, and a larger SEO site of 299+ pages starts at US$300. Each is a starting price; the itemised quote shows what is included. For a wider look at what Japanese buyers pay across countries and roles, see our page on offshore development rates.

• Headline rate per engineer-month or per project.
• Bridge SE, translation and Japanese document production, if included.
• Your own staff time for specs, reviews and acceptance.
• Rework from misunderstandings, which no rate card shows.
• Travel for kick-offs or acceptance, if you expect on-site visits.

Talent depth in AI, data and cloud: India vs Vietnam

For AI, data engineering and cloud architecture, India usually offers a deeper and more varied pool, because Indian engineers have worked on this kind of product work for global companies for many years. Vietnam’s pool is growing quickly, but the Japan-facing vendors in particular have concentrated on system development to Japanese specifications.

This matters because AI and data projects are experimental by nature. You do not hand over a detailed design document for a retrieval-augmented chatbot; you agree a goal, try an approach on real documents, measure the answers, and adjust. That loop works best when the engineer doing the experiment talks directly to the person who knows the documents. A translation layer slows each loop down.

On our team, another of us handles AI, machine learning, AWS and data work. Typical projects for Japanese clients include extracting fields from scanned invoices and order forms, search over internal manuals, LINE chatbots that answer from your own content, and dashboards built on sales or inventory data. Japanese text brings its own issues (tokenisation, mixed full-width and half-width characters, vertical scans), and we test on your real samples before promising accuracy.

Cloud work follows the same pattern. We set up AWS accounts under your organisation, with IAM roles, backups, logging and budget alerts, and write a runbook in English. If you already run on Google Cloud or Azure, we work there instead. What we do not do is manage physical servers in a Japanese data centre or provide 24/7 on-call operations; for that, a larger vendor is the right choice.

India vs Vietnam offshore development by project type

Match the country to the project: Japanese-spec system work, heavy testing and long maintenance of legacy systems lean toward Vietnam; AI, data, cloud, new products and English-language websites or apps lean toward India. Many projects sit in between, and there the team matters more than the flag.

The subsections below give a rule of thumb for common project types. Treat them as a starting point for your shortlist, not a verdict.

If your project is an English-language store for overseas buyers, our page on cross-border ecommerce for Japanese brands goes into payments, shipping pages and international SEO in more depth.

When does a small Indian team beat a large Vietnamese vendor, and when not?

A small Indian team wins when the project is focused, the scope can be written in English, and you value talking directly to the specialists. A large Vietnamese vendor wins when you need scale, Japanese-language management, on-site presence or several parallel workstreams.

Large vendors bring things a three-person team cannot: bench strength when someone leaves, formal PMO processes, Japanese-speaking account managers, sometimes a Japan office, and the ability to add ten engineers in a month. If your procurement team needs a vendor with a Japanese entity, or if your project touches many departments that each expect Japanese reporting, those things are not optional.

A small team brings different things. There is no sales layer, so the person you speak to on the first call is one of the three people who will do the work. There is no rotation of junior staff through your project. Decisions are fast because there are no internal handoffs. And for specialist work (an AI feature, a data pipeline, a mobile app, an AWS migration) you get the specialist directly rather than whoever is free on the bench.

The honest weak spots of a small team are capacity and continuity. Three developers can run one substantial project, or a couple of smaller ones, at a time. If one of us is ill, the others cover, but there is no bench of fifty. We manage that risk by keeping code, documentation and accounts in your name from the first day, so another team could take over if they ever needed to.

• Small Indian team: focused scope, English owner, specialist skills, fast decisions.
• Large Vietnamese vendor: Japanese management, big headcount, testing capacity, Japan office.
• Large Indian vendor: scale plus English, formal governance, long programmes.

Contract models in India vs Vietnam offshore development

Both countries offer the two models Japanese buyers know: a contract for completed work (請負, ukeoi) with a defined deliverable, and a time-based lab or quasi-mandate (準委任) arrangement where a team works through your backlog. The country does not change the model; the way you write the scope does.

Vietnamese vendors serving Japan often propose lab-type teams of several engineers plus a bridge SE, billed monthly. That suits long, evolving work. Fixed-scope projects are also common for well-specified systems, usually with Japanese design documents attached.

With BtechWaleTech, most first projects are fixed-scope: an itemised quote, milestones, and a written approval before anything is billed. After launch, continuing work can move to a monthly arrangement for features and maintenance, which starts at US$120/mo once the two months of free maintenance end. The exact terms, including acceptance, payment milestones and what happens if scope changes, are set out in your written quote; our general terms apply alongside it.

Whatever model you choose, in either country, get three things in writing: who owns the code and intellectual property (you should), how change requests are priced and approved, and what the handover looks like if the relationship ends. If your legal team wants its own contract template or NDA, send it and we will review it; your own lawyer should confirm the final version. We do not give legal advice on Japanese contract law.

Specs, quality and testing: Japanese documents vs English tickets

Vietnamese vendors serving Japan typically work from Japanese basic and detailed design documents and deliver Japanese test specifications; English-first Indian teams typically work from English user stories, acceptance criteria and automated tests. Pick the style your reviewers can actually check.

Japanese quality expectations are high, and they are often expressed through documents: screen definitions, input validation tables, test cases with expected results, and defect reports with root causes. If your acceptance process depends on those documents in Japanese, a vendor used to producing them saves you a lot of work.

We handle quality differently, in English. Each feature has written acceptance criteria before we start. We write automated tests where they pay off (business rules, payments, calculations), use pull requests with preview links so you can click through the change, and keep a changelog of what went out in each release. For projects that need a formal test sheet, we produce one in English with cases, steps and results; your team can translate what they need.

A practical tip for either country: agree on a small sample of “done” early. Take one real feature, write the spec in the format you will use, build it, test it and review it the way you will review everything. Most quality misunderstandings show up in that first feature, when they are cheap to fix.

Personal data: APPI rules when you offshore to India or Vietnam

If your offshore team will handle personal data from Japan, the rules on providing personal data to a third party in a foreign country apply whether you choose India or Vietnam. Plan for this before sending any customer data offshore.

Article 28 of Japan’s Act on the Protection of Personal Information requires prior consent before providing personal data to a third party in a foreign country, unless that third party has set up a system meeting standards set by the Personal Information Protection Commission for taking equivalent measures. Before asking for consent, the business must give the individual information about the foreign country’s protection system and the measures the recipient takes. India, for its part, has the Digital Personal Data Protection Act, 2023. Your lawyer should confirm which route applies to your case; we do not give legal advice.

What we do on the build side is keep personal data where it belongs. In most projects we never need production personal data at all: we develop against anonymised or synthetic test data, and production runs in your cloud account in the region you choose, including Tokyo. When access to production is unavoidable, it goes through your accounts with individual logins, least-privilege roles and logging, so you can switch it off at any time.

• Use synthetic or masked data in development and staging.
• Keep production in your own cloud account and region.
• Give the offshore team named, revocable accounts, never shared passwords.
• Log access to systems holding personal data.
• Record in your privacy documentation how offshore access works, with your counsel’s review.

Communication, holidays and working culture in each country

Communication style differs more between vendors than between countries, but some patterns are worth knowing: Japan-facing Vietnamese teams are trained in Japanese reporting habits, while English-first Indian teams tend to raise questions openly in writing and expect quick decisions.

With us, the default channel is written: a shared chat or your issue tracker, plus WhatsApp for quick questions, with replies seven days a week in IST. We hold one scheduled call a week in your afternoon, more during launch weeks. When something is unclear, we ask rather than guess, and when something will slip, we say so early with the reason and a new date. If your team prefers Slack, Teams or Backlog, we use that.

Holiday calendars are worth putting in the plan in either country. Vietnam’s Tết (Lunar New Year) usually falls in late January or February and many teams take several days off around it. India’s biggest festival period is usually Diwali in October or November, and holidays vary by state. Japan has its own quiet weeks around Golden Week, Obon and the year-end. Put all three calendars side by side when you plan a release and agree the dates in the written schedule.

Finally, decide who decides. In a bridge SE model, decisions often travel up and down two chains. In our model, one person on your side approves scope and priorities, and one of us (usually the third of us) keeps the plan. That short chain is a big part of why a small team can move quickly.

How to vet an offshore partner in India or Vietnam

Vet the actual people and the actual process, not the country or the brochure: meet the engineers who will be assigned, run a small paid first milestone, and check how they handle a question they cannot answer immediately.

Start with the people. Ask who exactly will work on your project, what they have built before, and whether you can speak to them directly. With a larger vendor, ask how often staff rotate and what happens to your knowledge when someone leaves. With a small team, ask how they cover illness and holidays.

Then look at process. Ask to see a sample of a spec, a pull request, a test report or a release note (with client details removed). Ask how they estimate, and what happens when an estimate is wrong. A good partner in either country will explain their assumptions rather than just give you a number.

Check ownership and security early. Where will the code live, in whose account? Who owns the domain, the cloud account and the app store listings? How are passwords shared? The right answer, in India vs Vietnam offshore development alike, is that everything lives in your accounts and the offshore team works as invited users.

Finally, test communication with something small. Send a slightly ambiguous question in writing and see what comes back: a guess, silence, or a clear clarifying question. That one exchange tells you more than a sales deck. You can read more about working with Indian developers in general on our guide to hiring developers in India.

Risks and red flags in India vs Vietnam offshore development

The risks are similar in both countries: vague scope, hidden subcontracting, code held in the vendor’s accounts, and optimistic estimates. Most of them are avoided by insisting on transparency before you sign, not by choosing one country over the other.

Watch for a quote that looks much lower than others without a clear reason. It usually means something is missing from the scope (testing, deployment, documentation) or that the work will be passed to someone you never meet. Ask what is excluded and who writes the code.

Be careful with any partner who wants to host your code, domain or app store listing under their own account “to make things simpler”. It is simpler for them, and it makes leaving expensive for you. The same goes for proprietary frameworks that only the vendor understands.

On the bridge SE side, the specific risk is that the bridge SE becomes a single point of failure. If one person holds all the context and then leaves, both sides lose a lot. Ask how context is written down. On the English-first side, the risk is that your spec writer is overloaded; if nobody on your team has time to answer questions in English, delivery will slow down whatever the developers’ skill.

• No named engineers until after signing.
• Code, cloud or store accounts owned by the vendor.
• No written change-request process.
• Promises of guaranteed search rankings or fixed AI accuracy before seeing your data.
• Reluctance to start with a small, paid first milestone.

Worked example: splitting a roadmap between Vietnam and India

Here is a hypothetical case to show how the India vs Vietnam offshore development decision can be split rather than all-or-nothing. It is an illustration, not a client story.

Say a 60-person B2B software company in Osaka sells a Japanese-language accounting add-on to small businesses. Its roadmap has two big items. The first is a rework of the invoice module for new rules, specified in detailed Japanese design documents by a team that does not work in English. The second is a new feature that reads scanned supplier invoices with AI and pre-fills entries, which nobody in-house has built before.

The invoice module rework fits a Japan-focused Vietnamese vendor well: Japanese specs, Japanese test cases, and a bridge SE who can sit in weekly reviews with the accounting specialists. The AI feature fits a small English-first team better: the company’s one English-speaking engineer works directly with a specialist, they test extraction on a few hundred real (masked) invoices, and they iterate every few days.

In that scenario, a team like ours would scope the AI feature first as a proof of concept, starting from US$600, with a clear success measure agreed in writing, such as which fields must be extracted and how results are checked by staff. If the proof of concept works, the production feature is quoted separately as custom software, starting from US$900. The Vietnamese vendor continues the core module in parallel. Each supplier does the work it is best at, and the company keeps both codebases in its own repositories.

Working with a team in India from Japan: the first two weeks

The first two weeks with an Indian team should produce a signed-off plan and one real, working piece of the project, so you can judge the partnership on evidence rather than promises. Here is how those weeks usually run with us.

Before day one, you receive the itemised quote (usually within two working days of the first call) and approve it in writing. Payment for the first milestone is by Wise or bank wire, quoted in USD, and you can pay in USD or JPY; invoices come from India. Nothing is billed before that written approval.

If the fit is wrong, you will know within those two weeks, and you keep everything built so far. That is the cheapest possible way to find out whether an Indian team suits you before committing a larger budget.

India vs Vietnam offshore development: a decision checklist

Answer these questions honestly and the country usually chooses itself. If most answers point one way, shortlist vendors there; if they split, consider splitting the work as in the example above.

• Can at least one decision-maker on your side work in written English every day? (Yes points to India.)
• Are the specs and acceptance criteria only in Japanese? (Yes points to Vietnam or a bridge SE model.)
• Does the project need AI, data engineering or cloud architecture as its core? (Yes points to India.)
• Is it maintenance of an older system documented in Japanese? (Yes points to Vietnam.)
• Do you need more than about five engineers at once? (Yes points to a large vendor in either country.)
• Must the supplier have a Japanese entity or office for procurement? (Yes rules out small teams like ours.)
• Is almost-full-day overlap essential, or is an afternoon window enough?
• Will code, cloud, domain and store accounts stay in your company’s name? (Insist on yes in either country.)

If your answers lean toward India and the project is focused, send us a short description on WhatsApp or through the contact page. You will get honest feedback on fit, and an itemised quote if it makes sense.