A Japanese software company building systems for the bus industry had a persistent problem that many offshore development operations recognise: requirements defined in Japan weren’t translating accurately into the software being built in Vietnam. Quality gaps accumulated silently, surfacing only during testing, and by then, fixing them was already expensive.

This case study explores how SHIFT ASIA analysed and visualised that ‘black box’ of process and quality risk, established measurable goals, and delivered a concrete Quality Improvement Roadmap that the client could execute with their own team.

Client Overview

The client is a Japanese software company focused exclusively on the bus industry, developing operational systems for chartered bus companies, route operators, and highway bus services. Their products handle core workflows across the sector, from fleet and schedule management to online reservations.

Their development model follows a common pattern for Japanese software businesses operating in this space: sales and requirements definition are conducted by a Japan-based team, while their software development centre in Vietnam handles engineering. This structure creates real cost efficiencies but introduces a fundamental challenge: maintaining quality alignment across two teams, two languages, and two quality cultures.

Client Challenges

Despite an experienced team on both sides, the client had reached a point where quality problems were recurring without a clear mechanism to address their root causes. Three interconnected issues defined the situation.

Ambiguous specifications and chronic rework

Development regularly proceeded before requirements had been fully defined. This wasn’t a matter of individual error; it was a systemic gap in the upstream process. Incomplete specifications reached the Vietnam team, who built based on the information available, only for misalignments to surface during testing. The resulting rework cycles were costly in terms of time and resources, and they occurred too frequently to ignore.

Communication gaps across the Japan–Vietnam boundary

The intent of Japanese stakeholders was not reliably reaching the development team. This wasn’t simply a language issue; it reflected a deeper absence of shared quality standards. Without a common framework for what ‘done’ or ‘correct’ looked like, the Japan team and the Vietnam team were, in effect, working to different definitions of quality without realizing it.

No standardised test process

Testing relied heavily on individual experience and judgment rather than documented plans and structured test design. There were no systematic test plans, no standard templates, and no consistent coverage model. This created a dependency on specific individuals and made it impossible to measure or improve quality outcomes across releases.

Client Requirements

The client engaged SHIFT ASIA to bring structure and visibility to a quality operation that had been running largely on intuition. The scope covered four key areas:

• QA Process Consulting: End-to-end QA process consulting, from current state analysis through to process construction and improvement planning.
• Upstream Process Support: Upstream process support, specifically the review of specifications and the formulation of acceptance criteria to build quality in before development begins.
• PMO Support: PMO support to visualise project progress and manage issues across the distributed team.
• Test Standardisation: Test standardisation through the creation of reusable templates for Test Plans and Test Design, replacing person-dependent practices with documented standards.

SHIFT ASIA’s Approach

SHIFT ASIA structured the engagement around three sequential phases: understanding the current state, agreeing on goals, and formulating the measures needed to reach them. The methodology was disciplined and evidence-based throughout.

Step 1 — Visualisation

The first phase involved a structured analysis of existing documentation, development workflows, and historical defect data. Rather than relying solely on stakeholder accounts, SHIFT ASIA examined the data directly to identify where quality risks were entering the process and where they were being detected. This analysis uncovered four critical process bottlenecks, each categorised using internationally recognised frameworks. For an operation where many of the problems had previously been described in vague terms, ‘communication issues’, ‘specification gaps’, this level of specificity was itself a significant step forward.

Step 2 — Goal Setting

With a clear picture of the current state established, SHIFT ASIA worked with both the Japan-side management team and the Vietnam-side development and QA leads to define what ‘better’ actually meant in measurable terms. Four quality KPIs were agreed upon, including rework rate and Defect Removal Efficiency (DRE), grounded in the JIS X 25010 international quality standard. Establishing these KPIs was as much about alignment as measurement; for the first time, both sides of the team were working toward the same, explicitly stated definition of quality.

Step 3 — Policy Decision

The final phase translated the agreed goals into concrete improvement measures. SHIFT ASIA formulated seven quality improvement measures covering upstream processes, communication protocols, test standardisation, and metrics tracking, each with a defined owner, rationale, and a place within a phased execution plan. These were packaged into a Quality Improvement Roadmap that the client could independently implement.

Achieved Results

The engagement concluded with the delivery of the Quality Improvement Roadmap. While long-term quality metrics will be tracked internally by the client as they move into execution, the consulting phase produced meaningful and immediate outcomes.

Four previously undefined process bottlenecks were identified, categorised, and documented, turning a set of vaguely understood ‘communication problems’ into specific, addressable issues. Four quality KPIs were established and agreed upon by stakeholders across both the Japan and Vietnam teams, creating the shared language for quality that had been absent. Seven improvement measures were formulated, each mapped to the identified bottlenecks and the agreed KPIs, with an execution plan that gave the client a clear sequence of actions rather than a list of recommendations.

Critically, the client opted to execute the roadmap using their own internal team and the assets provided by SHIFT ASIA. This was not a constraint; it reflected confidence in the clarity and completeness of the deliverables. The goal of the engagement was never to create an ongoing dependency, but to equip the client with the understanding and tools to improve their quality of life. That outcome was achieved.

Why SHIFT ASIA

The client discovered SHIFT ASIA’s Quality Consulting services through the corporate website and made a direct enquiry. The fit was clear: whereas many QA engagements begin with testing, SHIFT ASIA’s approach emphasises upstream quality, building correctness into requirements and design before a line of code is written.

For offshore development teams managing cross-cultural collaboration, this upstream focus addresses the point where the most consequential and least visible quality risks originate. Fixing a defect in testing is measurable. Preventing a misunderstood requirement from becoming a defect in the first place rarely shows up in any metric, but the absence of that problem is felt across every release.

Key Takeaways

Organisations running offshore development operations with similar challenges will recognise several of the dynamics in this case study:

• Quality issues need structural solutions: Offshore quality failures are rarely a people problem on either side. They are almost always a process and communication problem, one that requires structural intervention at the specification and handoff layer, not personnel changes.
• Defect data tells a story: Historical defect data is a diagnostic tool that most teams underuse. Systematic analysis of what failed, when, and where it was detected reveals patterns that stakeholder interviews and anecdotal feedback miss entirely.
• Standards create shared language: International quality frameworks such as JIS X 25010 and ISO 25010 serve a purpose beyond compliance. In cross-border teams, they provide neutral common ground, a shared vocabulary for quality expectations that transcends individual interpretations.
• Good consulting builds independence: The measure of a good consulting engagement is not continued reliance; it is the client’s ability to move forward independently. A roadmap that requires the consultant to remain present is not a roadmap; it is a dependency. SHIFT ASIA designs for the former.