Custom web applications
Purpose-built web products and operational software shaped around your users, workflows, and business rules.
Client portals · B2B platforms · Admin systems · Internal applications
CUSTOM SOFTWARE DELIVERY · SOUTH KOREA
Custom software.
One accountable partner.
For businesses and digital agencies that need more than developer introductions. Decisionary defines the work, brings together project-fit specialists, and takes responsibility for agreed software delivery.
A SIMPLER DELIVERY STRUCTUREProject-based
Your business or agencyGoals · Requirements · Budget
DecisionaryContract · Scope · Delivery accountability
One partnerProduct / PMEngineeringQA / Design
Specialists are confirmed against each project's actual requirements.
01One commercial counterpart
02Defined milestones & acceptance
03Project-fit execution teams
BUILT FOR REAL BUSINESS NEEDS
Business applicationsExisting product rebuildsAgency development delivery
01 / CAPABILITIES
Software that solves
actual business needs.
We focus on systems people depend on to run, scale, or modernize their business—not one-off websites or generic automation packages.
Product rebuilds & modernization
Upgrade an existing product, replace fragmented functionality, or move to a better foundation with a phased release plan.
Platform rebuilds · Service upgrades · Legacy transition planning
APIs, data & systems integration
Plan and deliver the connections between systems, including data movement, dependencies, validation, and handover.
API integrations · Data migration · Multi-system workflows
Technology stacks, scope, delivery resources, and timelines are confirmed after reviewing each project's requirements.
02 / WHO WE WORK WITH
Two ways to work.
One accountable partner.
Work directly with us on your software project—or bring Decisionary in as the delivery partner behind your agency's client relationship.
FOR BUSINESSES & PRODUCT TEAMS
Build with a single delivery counterpart.
Need a new B2B application or a rebuild of an existing system? We organize an agreed delivery scope, project team, and milestones under a clear contractual structure.
Discuss a direct project ↗FOR DIGITAL AGENCIES & CONSULTANCIES
Add delivery capability, not overhead.
Own the client relationship while exploring a defined development partnership with us. White-label collaboration, communication roles, and commercial terms can be agreed project by project.
Explore an agency partnership ↗03 / WHY DECISIONARY
A better way
to manage delivery.
A development partner should make responsibility clearer—not create another layer of confusion. Our model is designed around the decisions that keep software projects moving.
01
One contractual relationship
Decisionary is positioned as your project delivery counterpart—not merely a directory of freelancers. Responsibilities and acceptance terms are established in writing.
02
Scope before a promise
We review objectives, integrations, constraints, and delivery capacity before confirming an estimate or timeline.
03
The right specialists for the work
Engineering, product, design, and QA capacity is selected and confirmed for each engagement rather than presented as a fixed in-house team.
04
Planned handover and acceptance
Deliverables, review checkpoints, change requests, acceptance criteria, and transition responsibilities are agreed before execution.
04 / HOW WE WORK
From first brief
to working software.
A practical project process that makes scope, capability, delivery, and acceptance clear to every party.
01
Share your brief
Goals, users, current product, budget range, and target timing.
02
Review feasibility
Requirements, dependencies, delivery options, and open decisions.
03
Agree scope & team
Specialists, milestones, exclusions, commercials, and acceptance rules.
04
Build & review
Track progress, changes, testing, and agreed quality checkpoints.
05
Accept & hand over
Validate deliverables, transfer agreed assets, and close the project.
Engagements proceed only after scope, specialist availability, technical fit, commercial terms, and a written statement of work have been confirmed.
05 / FOUNDER EXPERIENCE
Experience where
complexity matters.
Decisionary draws on its founder's track record across multi-stakeholder platforms, product rebuilds, operations, and integrations.
Selected experience from the founder's previous employment and engagements. These are not represented as projects independently contracted and delivered by Decisionary. Client identities and assets are omitted pending publication permission.
2025–2026 · GLOBAL PLATFORM
Global learning platform transition
Coordinated operational policy, stakeholder dependencies, phased migration, and release readiness for a learning platform serving users in approximately 100 countries.
PLATFORM MODERNIZATION · MIGRATION COORDINATION
2022 · MOBILE PRODUCT
Consumer mobile product rebuild
Helped define a focused MVP from 36 feature candidates, informed by 23 user research sessions, and coordinated delivery decisions across an 11-person multidisciplinary team.
PRODUCT REBUILD · MVP SCOPING
2023 · BUSINESS SOFTWARE
Translation management system
Mapped operational bottlenecks through user interviews and structured MVP requirements and delivery priorities for translation workflows.
ENTERPRISE SOFTWARE · WORKFLOW DESIGN
2018–2019 · B2B2C PLATFORM
Multi-party insurance platform
Worked across enrollment journeys, administration, partner channels, payment processes, and integration requirements in a B2B2C insurance product.
DIGITAL PLATFORM · PARTNER INTEGRATION
Specific references and supporting details can be discussed subject to confidentiality and disclosure permissions.
06 / FREQUENTLY ASKED QUESTIONS
Before we
get started.
What types of projects are a fit?
Business web applications, platform rebuilds, and API or data integrations with a definable scope. We review the brief first to establish whether a suitable team and delivery plan can be confirmed.
Does Decisionary have a permanent development team?
We use a project-based delivery model. Independent engineering, PM, design, and QA specialists are selected and confirmed for the scope of each engagement; they are not presented as permanent employees.
How do you calculate project pricing?
We estimate after reviewing deliverables, dependencies, acceptance requirements, and specialist capacity. A fixed price or milestone-based structure may be proposed when the scope supports it.
Can you work as our agency's development partner?
Yes. We welcome white-label and agency-led collaboration discussions. Client ownership, confidentiality, delivery responsibilities, and communication boundaries are agreed in advance.
Can you support Korea and East Asia projects?
We are based in South Korea and can explore local coordination where market knowledge and software delivery requirements overlap. Project suitability is evaluated individually.
07 / LET'S TALK
Have a software
project in mind?
Tell us what you're building or improving. We will review the brief and outline a practical next step if the project is a fit.
hello@decisionarypro.com ↗Based in South Korea · Working with international clients and agencies
What to include in your first message
A short email is enough. The following details help us assess the request:
- What you need to build or improve
- Existing product, users, and relevant systems
- Estimated budget range and target launch date
- Whether you're a direct client or an agency partner