API Development
APIs that connect your systems securely and reliably.
We design and build APIs that are secure, documented and built to last — whether you need a public API for partners, a private backend, or integrations that stitch your systems together.
What you get
Everything included in api development
REST and GraphQL API design
Authentication, rate limiting and versioning
Third-party integrations and webhooks
Clear documentation (OpenAPI / Swagger)
Automated testing and monitoring
Scalable, secure backend architecture
What you can build with api development
A few examples of what api development delivers for our clients. Have something else in mind? We build that too.
How we work
A clear path from idea to launch
Discover
We learn your goals, audience and constraints, then scope the work and price it clearly.
Design
We map the solution and design the experience, validating direction before we build.
Build
We develop in focused sprints with regular demos so you always see progress.
Launch & support
We ship, measure and keep improving, with support and maintenance on hand.
Why us
Why businesses choose SOHOON
A few reasons api development clients trust us with work that matters to their business.
7
Years in business
Multi
Niche experience
On-time
Delivery focus
1
Accountable partner
A 7-year software house
Not a freelancer and not a faceless marketplace. A settled team that has shipped real products since 2019 across many industries.
Experience in your niche
We have built for insurance, healthcare, gyms, restaurants, HVAC, mortgage, real estate and more, so we understand your world quickly.
Fixed scope, clear quotes
You get a written quote and milestone plan before we start. No surprise invoices and no scope creep.
One accountable team
A single point of contact who owns your project end to end, with senior engineers and designers behind them.
Secure and compliant
We build with security in mind, including HIPAA-aware solutions for healthcare and insurance clients who need them.
Here after launch
We do not disappear on go-live. Maintenance, support and improvements are part of how we work.
API Development pricing
Clear starting rates for api development. Switch currency to see prices in your region, and book a free call for an exact quote.
Hourly rate
$35/hour
Flexible hourly engagement for changes, support and ongoing work. Most projects use a fixed quote below.
MVP
from $2,500
A focused first version to validate fast.
- Core feature set
- Secure auth + database
- Cloud deployment
Growth
from $7,500
A complete product for real operations.
- Full feature build
- Integrations & APIs
- Dashboards & reporting
Enterprise
from $15,000
Scale, security and dedicated support.
- Multi-role & multi-tenant
- Advanced integrations
- SLA & maintenance
Not sure which option fits?
Book a free appointment and we will scope your project and give you an exact quote.
Starting estimates shown in USD. Conversions from USD are approximate; your final fixed quote is confirmed after a free consultation.
Trusted by owners like you
Real words from owners we have worked with. We use first name and industry only, out of respect for our clients' privacy.
“Client intake used to be a mess. Now it is organized and secure, and the team was patient with our legal requirements.”
“They set up our Medicare lead funnel and the follow-up runs on its own now. Honest, responsive and easy to work with.”
“Our car auction platform handles bids and payouts without me babysitting it. They thought through the edge cases we missed.”
Testimonials reflect real client feedback. Names are shortened and shown with industry only at our clients' request.
FAQ
API Development: questions answered
REST or GraphQL?
REST is simple and widely supported; GraphQL gives clients precise data control. We pick based on your consumers and use case.
Do you document the API?
Yes — every API ships with OpenAPI/Swagger docs so your team and partners can integrate easily.
Can you integrate third-party services?
Yes — payments, CRMs, shipping, telephony, AI and more.
How much does api development cost?
It depends on scope. We run a free consultation, scope the work, and give you a clear fixed quote before anything begins. You can also see starting prices on this page and switch to your currency.
How long does it take?
Most projects start within a few days of approval. We share a milestone timeline up front so you always know what is happening and when, and you see progress in regular demos.
Do you provide support after launch?
Yes. We offer maintenance, updates, security and improvements after go-live, so your api development keeps working and gets better over time.
Why should we choose SOHOON?
We are a software house that has shipped products since 2019 across many industries. You get fixed quotes, one accountable team, senior talent and honest communication, not a freelancer who disappears.
Ready to start your api development project?
Book a free appointment and we will scope your api development, answer your questions and send a clear quote within one business day.