Why does a Vietnam-based delivery location search return so many offensive security specialists instead of general test teams?

Grouping by delivery location says nothing about which services dominate within that group, and here the mix leans toward offensive security work. Red team engagements are offered by 4 of the 8 companies here, penetration testing by another 4, and security testing more broadly by 3. Automated testing is offered by 3 of the 8, and manual or exploratory testing by only 2. A buyer who came to this page for general functional coverage should open each profile's own service list, since the country match by itself does not describe it.

Does this list include a dedicated usability, accessibility, or localization testing specialist, or is coverage thin for those services?

Several of the more specialized testing types recorded on this list are each tied to a single company rather than spread across several providers. Usability testing, consulting, mobile testing, accessibility testing, compatibility testing and localization testing are each offered by exactly 1 of the 8 companies here. A buyer who needs one of these narrower services is choosing among a much smaller pool than the page's full count suggests.

If a shortlisted vendor's profile names no past client, what else in the profile can help fill that gap?

A blank client field here records only that no source is listed for a client relationship in that profile. An engagement model is recorded for 2 of the 8 profiles here, and a technical framework for only 1, so little else substitutes for a named client either. A buyer facing this should ask for a specific reference contact or a sample deliverable before treating the gap as a sign of limited experience.

Are the companies delivering from Vietnam independent, or parts of larger groups?

Mostly parts of larger groups. Six of the eight profiles record a subsidiary status and two record an independent one, so on this page group ownership is the ordinary case rather than the exception. Ownership sits apart from every other field the page uses: it enters none of the four applicability conditions, it does not change a recorded service list, and it says nothing about which team performs the work. Where it lands is on the counterparty to a contract, and a reader working through this page for delivery capability alone would pass the distinction without meeting it.

Best QA companies in Vietnam, 2026

QA Rating is published independently, and its publisher owns no company listed in this catalog.

8 testing companies in this catalog have a delivery location in one of the countries Vietnam covers. They are grouped below by what each is best suited for, in 4 groups. 3 of them hold a certificate confirmed by a register entry and 1 publishes a rate card. Composition and order last changed on September 3, 2026.

8 companies. Ordered by the number of verified reviews on external platforms, highest first. Companies with an equal count are ordered by name.

The companies

Vietnam: 8 companies, grouped by what they are best suited for.
#	Company	Delivery locations	Published rates	Team size	Reviews
Automation first Test automation is offered as a service, and at least one published case study reports a coverage or regression time metric.
1	SHIFT ASIA	Vietnam	Blended up to $25/hclutch.co	501-1000 people	7
Nearshore for the USA At least one delivery location in Canada, Mexico, Central America or South America.
2	CyStack	Vietnam, Canada	Not published	11-50 people	1
Performance engineering Performance testing is offered as a service, and at least one published case study reports a throughput or latency metric.
1	SHIFT ASIA	Vietnam	Blended up to $25/hclutch.co	501-1000 people	7
Security focus Security testing is offered, together with either penetration testing or a verified ISO/IEC 27001 certificate, and at least one published case study.
1	SHIFT ASIA	Vietnam	Blended up to $25/hclutch.co	501-1000 people	7
Other companies in this axis No applicability tag met its criterion for these profiles.
3	Lotus Quality Assurance	Vietnam, Japan, the USA, South Korea	Not published	201-500 people	9
4	AGEST Vietnam	Vietnam, Japan, the USA	Not published	201-500 people	0
5	Verichains	Vietnam, Singapore	Not published	11-50 people	0
6	Viettel Cyber Security	Vietnam	Not published	501-1000 people	0
7	VNCS	Vietnam	Not published	51-200 people	0
8	VSEC	Vietnam	Not published	51-200 people	0

One company clears automation, load and security together

Automation first, Performance engineering and Security focus each tag exactly one company out of the eight here, and it is the same company for all three: SHIFT ASIA. The fourth tag, Nearshore for the USA, tags CyStack on a Canada delivery location, a condition unrelated to testing depth or evidence.

SHIFT ASIA is also the only company on this page with a published rate and the only one with a recorded case study. A buyer who wants automation coverage, load testing evidence and security testing evidence from one vendor has exactly one company to choose on this page. If SHIFT ASIA does not fit on team size, rate or any other field, no second company here clears the automation, performance or security condition; covering all three then means engaging more than one vendor, on this page or off it.

Whether the registered entity sits where the delivery team does

All eight companies here are headquartered in Vietnam, the same country the page groups delivery locations on, and that match holds for the whole composition. The delivery footprint is a separate field, and it stays inside Vietnam only for four of the eight: SHIFT ASIA, Viettel Cyber Security, VNCS and VSEC record no delivery location outside the country.

The other four record at least one location elsewhere: CyStack also delivers from Canada, Lotus Quality Assurance from Japan, the US and South Korea, AGEST Vietnam from Japan and the US, and Verichains from Singapore. Clearing the page's Vietnam-delivery condition does not say which of several recorded locations an account will be staffed from; that question goes to the vendor directly, before a contract fixes a jurisdiction for the work itself.

Whether a larger team is also a checked team

The eight companies fall into four team-size bands with two companies each: 11 to 50, 51 to 200, 201 to 500 and 501 to 1000. The two companies that clear any of the four applicability tags sit at opposite ends of that range, CyStack in the 11-to-50 band and SHIFT ASIA in the 501-to-1000 band; the two middle bands hold no tagged company.

Verified evidence does not track the same way. The 51-to-200 band holds two of the composition's three verified certificates, one CREST certificate each for VNCS and VSEC, while the 201-to-500 band, one step larger, holds none of the three. A buyer sorting this list by team size alone would pass over the certified pair sitting in the smaller of the two middle bands.

A verified certificate here does not guarantee the security tag

Security focus reads three facts together: a security testing service, either penetration testing or a verified ISO/IEC 27001 certificate, and a published case study. VSEC sells both security testing and penetration testing as separate services and holds a verified CREST certificate besides, clearing the first two facts outright. What it does not carry is a published case study, and that is the one fact missing for the tag.

VNCS holds the same CREST certificate but sells penetration testing as its only recorded service; the tag reads security testing specifically, and VNCS's profile does not list that service. Both certificates are verified against CREST's own marketplace listing, independent of anything the tag counts.

A tag on this page names a fixed set of facts, and a company can hold verified capability while missing one of them. The exact fields behind Security focus are set out on the methodology page; for a buyer comparing VNCS and VSEC, the certificate is already confirmed, and the open question is whether either company can produce a case study or a comparable written result before work begins.

How this ranking was put together

Membership is computed from the profile, not chosen: companies appear here when they have a delivery location in one of the countries Vietnam covers, as their own profile states. Position in a ranking cannot be bought. Paid options are limited to the extended profile, labelled sponsor slots and lead forms, and none of them affect tags or order.

The table compares the fields that decide this axis: delivery locations, published rates, team size, plus the number of verified reviews on external platforms. Rates, minimum project size and onboarding time carry the source they came from next to the value.

Automation first: Test automation is offered as a service, and at least one published case study reports a coverage or regression time metric.
Nearshore for the USA: At least one delivery location in Canada, Mexico, Central America or South America.
Performance engineering: Performance testing is offered as a service, and at least one published case study reports a throughput or latency metric.
Security focus: Security testing is offered, together with either penetration testing or a verified ISO/IEC 27001 certificate, and at least one published case study.

The criteria for this axis are on the methodology page, together with field definitions and the rule for editorial order. Changes of order are recorded in the changelog.

Questions

Why does a Vietnam-based delivery location search return so many offensive security specialists instead of general test teams?: Grouping by delivery location says nothing about which services dominate within that group, and here the mix leans toward offensive security work. Red team engagements are offered by 4 of the 8 companies here, penetration testing by another 4, and security testing more broadly by 3. Automated testing is offered by 3 of the 8, and manual or exploratory testing by only 2. A buyer who came to this page for general functional coverage should open each profile's own service list, since the country match by itself does not describe it.
Does this list include a dedicated usability, accessibility, or localization testing specialist, or is coverage thin for those services?: Several of the more specialized testing types recorded on this list are each tied to a single company rather than spread across several providers. Usability testing, consulting, mobile testing, accessibility testing, compatibility testing and localization testing are each offered by exactly 1 of the 8 companies here. A buyer who needs one of these narrower services is choosing among a much smaller pool than the page's full count suggests.
If a shortlisted vendor's profile names no past client, what else in the profile can help fill that gap?: A blank client field here records only that no source is listed for a client relationship in that profile. An engagement model is recorded for 2 of the 8 profiles here, and a technical framework for only 1, so little else substitutes for a named client either. A buyer facing this should ask for a specific reference contact or a sample deliverable before treating the gap as a sign of limited experience.
Are the companies delivering from Vietnam independent, or parts of larger groups?: Mostly parts of larger groups. Six of the eight profiles record a subsidiary status and two record an independent one, so on this page group ownership is the ordinary case rather than the exception. Ownership sits apart from every other field the page uses: it enters none of the four applicability conditions, it does not change a recorded service list, and it says nothing about which team performs the work. Where it lands is on the counterparty to a contract, and a reader working through this page for delivery capability alone would pass the distinction without meeting it.

Other axes these companies appear on

Industry: Banking 4 of these 8 companies also stand there
Industry: Education 4 of these 8 companies also stand there
Type of testing: Penetration testing 4 of these 8 companies also stand there
Type of testing: Red teaming 4 of these 8 companies also stand there

How to choose a vendor on this axis

Published by QA RatingPublished on September 3, 2026Updated on September 5, 2026

Every fact about a company comes from a listed source. A field without a source stays empty. A certificate counts as confirmed only when a registry, certificate or auditor report backs it; a certificate the company only claims about itself is published separately, under that label. Vendors can request a correction at hello@qa-rating.com. A correction is applied when it comes with a public source.