Focused support across review, accessibility, and implementation

Sola Studio supports teams that need practical help with UX review, accessibility remediation, product-facing frontend implementation, or a clearly scoped next step around an interface, flow, or customer journey.

UX review
Accessibility remediation
Frontend implementation
Clearly scoped support
Async-friendly

See services

Choose the right starting point for the work you want to move forward.

Sola Studio is useful when the next step is practical, but not yet clearly scoped: a screen or flow needs direction, audit findings need translating into code, frontend work needs capacity, or a product-facing issue needs to be made easier to discuss and act on.

A screen, flow, or product-facing issue is not working — and not yet clearly mapped
Your team can sense that something in a screen, flow, form, or wording is harder to understand or act on than it should be — but the problem has not yet been clearly scoped or mapped.
An accessibility audit has come back, and now it needs implementing
You have findings from an external accessibility review, but relating them to the actual codebase, preparing a Remediation Estimate, and then making the agreed changes are separate work from the audit itself.
Frontend work needs to keep moving
Your frontend capacity is stretched, but opening a full-time role would mean recruitment, budget, and internal coordination that may not fit the current need.
The team needs a clearer next step
You want support from someone who can connect product context, frontend constraints, UX, and market-facing communication into practical next steps.

The work sits between layers — screens, wording, implementation, and the decisions connecting them.

Sola Studio is run by Yoko Shiina — reviewing user flows, locating friction across interface layers, and translating findings into practical outputs that product teams can act on. Depending on the service, that may stay at the level of findings and direction, or continue into the code itself — React, Next.js, TypeScript, API integration, and accessibility remediation.

Earlier, Yoko worked across advertising, customer-attraction strategy, web production, information architecture, and client-facing project work. That background shapes how friction is identified in context — not only in what a screen shows, but in how information is ordered, what users need before they decide, and what a flow is actually asking people to do.

Sola Studio is designed as focused professional support — clear scope, written context, and outputs shaped so that what comes next is easier to discuss, prioritize, and carry into implementation.

CPACC
CSM
CSPO

Learn more about Sola Studio

Business services by starting point

UI/UX Review

Structured review of screens, wording, and flows — mapping where users hesitate, stop, or misread.

A scoped review across screens, flows, wording, and interface decisions, with practical outputs shaped around what the team needs to understand or move forward.

See UI/UX Review

Accessibility Remediation Service

Accessibility Remediation

From external audit findings to frontend implementation — scoping first, then the changes in the codebase.

For teams holding accessibility findings from an external review provider. Scoping Confirmation relates those findings to the actual codebase and prepares a Remediation Estimate; Remediation carries out the agreed frontend work.

See Accessibility Remediation Service

Frontend Partner

Ongoing frontend implementation support through reserved monthly capacity.

For teams that need ongoing React, Next.js, or TypeScript support across existing features, UI improvements, refactoring, code review, and component-based interface work.

See Frontend Partner

Seeing across review and implementation — and connecting findings to what can move next.

Sola Studio is useful when the problem sits across multiple layers at once — what users need to understand, what the interface needs to support, and what the team needs to decide and act on next.

UX Review
What users, stakeholders, and engineers need to understand, trust, and move through — across screens, wording, and flows.
Frontend Implementation
React, Next.js, TypeScript, forms, flows, components, APIs, and accessibility remediation — carrying review findings into working code.
Clear scope and written context
Work is delivered with enough written context and scope clarity that the output can be discussed, handed off, or acted on without reopening the full engagement.

A clear starting path for each service.

How the work starts depends on the service. Some services proceed primarily through forms and written information, while scoped work usually begins with an inquiry and a 30-minute discovery call.

Before work begins, the applicable scope, price or quote, payment, required information, access conditions, and any service-specific contract or NDA requirements are confirmed.

How we work together

Form-based and asynchronous routes where appropriate
30-minute discovery call for scoped work
Fixed or individually quoted pricing, depending on the service
Written scope and start conditions
Remote-first and async-friendly collaboration

Selected experience

Here is a selection of projects I've worked on throughout my career.

Internal Energy Operations Dashboard — Planning, CSV Workflow, and Implementation Support
An internal dashboard project covering Operation Planning and Operation Mode Switching for a smart-city energy environment. The work turned evolving requirements into UI flows, code prototypes, frontend validation rules, error handling, API-related specifications, and implementation-ready documentation. It continued through vendor code review, targeted implementation fixes, production release, and the start of operational use.
UI/UX reviewInternal tools
View details
Web3 EdTech Platform MVP — Frontend Development & API Co-Design
A first-release Web3 education platform MVP where I served as the sole frontend engineer, covering UI implementation, Web3 onboarding, API endpoint co-design, and Prisma schema adjustments. The wallet-to-certificate flow was implemented as one continuous journey, with clarity for non-technical users considered throughout.
UI/UX reviewCross-market work
View details
Monthly PDF Reporting Tool — Workflow, Data Visualization, and PDF Generation
An internal tool supporting the creation of monthly client-facing PDF reports for a Tokyo-based sales team. The work included mapping a workflow that had been concentrated in the hands of one backend engineer and implementing a React-based UI covering data selection, chart preview, and multi-page PDF export. After testing the MVP with selected real reports, individual processing times indicated that a workflow taking up to ten working days could potentially be completed within a few hours.
UI/UX reviewInternal tools
View details

View all experience

Selected tools from Sola Studio

Practical tools and public apps from Sola Studio for real workflows, clearer decisions, and everyday use.

Color contrast checker with Tailwind palette grid

Open-source toolLive / Open source

Contrastly

Open-source Tailwind Color Contrast Checker

View tool

Business toolLive / Free tool

Conversion Leak Estimator

Free estimator for conversion flow friction

View tool

Public toolLive app

Promotee

Interview Flashcard Practice App

View tool

View all tools

Not sure which service fits?

Share a little context about what you are working on.
The inquiry is a good starting point even if the scope is not yet clear.

Start an inquiry

Focused support across review, accessibility, and implementation

UX review
Accessibility remediation
Frontend implementation
Clearly scoped support
Async-friendly

See services

Choose the right starting point for the work you want to move forward.

A screen, flow, or product-facing issue is not working — and not yet clearly mapped
Your team can sense that something in a screen, flow, form, or wording is harder to understand or act on than it should be — but the problem has not yet been clearly scoped or mapped.
An accessibility audit has come back, and now it needs implementing
You have findings from an external accessibility review, but relating them to the actual codebase, preparing a Remediation Estimate, and then making the agreed changes are separate work from the audit itself.
Frontend work needs to keep moving
Your frontend capacity is stretched, but opening a full-time role would mean recruitment, budget, and internal coordination that may not fit the current need.
The team needs a clearer next step
You want support from someone who can connect product context, frontend constraints, UX, and market-facing communication into practical next steps.

The work sits between layers — screens, wording, implementation, and the decisions connecting them.

Sola Studio is designed as focused professional support — clear scope, written context, and outputs shaped so that what comes next is easier to discuss, prioritize, and carry into implementation.

CPACC
CSM
CSPO

Learn more about Sola Studio

Business services by starting point

UI/UX Review

Structured review of screens, wording, and flows — mapping where users hesitate, stop, or misread.

A scoped review across screens, flows, wording, and interface decisions, with practical outputs shaped around what the team needs to understand or move forward.

See UI/UX Review

Accessibility Remediation Service

Accessibility Remediation

From external audit findings to frontend implementation — scoping first, then the changes in the codebase.

See Accessibility Remediation Service

Frontend Partner

Ongoing frontend implementation support through reserved monthly capacity.

For teams that need ongoing React, Next.js, or TypeScript support across existing features, UI improvements, refactoring, code review, and component-based interface work.

See Frontend Partner

Seeing across review and implementation — and connecting findings to what can move next.

Sola Studio is useful when the problem sits across multiple layers at once — what users need to understand, what the interface needs to support, and what the team needs to decide and act on next.

UX Review
What users, stakeholders, and engineers need to understand, trust, and move through — across screens, wording, and flows.
Frontend Implementation
React, Next.js, TypeScript, forms, flows, components, APIs, and accessibility remediation — carrying review findings into working code.
Clear scope and written context
Work is delivered with enough written context and scope clarity that the output can be discussed, handed off, or acted on without reopening the full engagement.

A clear starting path for each service.

How the work starts depends on the service. Some services proceed primarily through forms and written information, while scoped work usually begins with an inquiry and a 30-minute discovery call.

Before work begins, the applicable scope, price or quote, payment, required information, access conditions, and any service-specific contract or NDA requirements are confirmed.

How we work together

Form-based and asynchronous routes where appropriate
30-minute discovery call for scoped work
Fixed or individually quoted pricing, depending on the service
Written scope and start conditions
Remote-first and async-friendly collaboration

Selected experience

Here is a selection of projects I've worked on throughout my career.

Internal Energy Operations Dashboard — Planning, CSV Workflow, and Implementation Support
An internal dashboard project covering Operation Planning and Operation Mode Switching for a smart-city energy environment. The work turned evolving requirements into UI flows, code prototypes, frontend validation rules, error handling, API-related specifications, and implementation-ready documentation. It continued through vendor code review, targeted implementation fixes, production release, and the start of operational use.
UI/UX reviewInternal tools
View details
Web3 EdTech Platform MVP — Frontend Development & API Co-Design
A first-release Web3 education platform MVP where I served as the sole frontend engineer, covering UI implementation, Web3 onboarding, API endpoint co-design, and Prisma schema adjustments. The wallet-to-certificate flow was implemented as one continuous journey, with clarity for non-technical users considered throughout.
UI/UX reviewCross-market work
View details
Monthly PDF Reporting Tool — Workflow, Data Visualization, and PDF Generation
An internal tool supporting the creation of monthly client-facing PDF reports for a Tokyo-based sales team. The work included mapping a workflow that had been concentrated in the hands of one backend engineer and implementing a React-based UI covering data selection, chart preview, and multi-page PDF export. After testing the MVP with selected real reports, individual processing times indicated that a workflow taking up to ten working days could potentially be completed within a few hours.
UI/UX reviewInternal tools
View details