API and backend development services for systems where the data is the product.
RAITHub's API and backend development service designs the part of your product users never see: the data model, endpoints, background jobs, integrations and audit trail. Work is fixed-scope, typically 6 to 12 weeks, and starts with a data model you sign off before code, so money and records stay correct under retries and load.
What's included
- Domain model and ERD, reviewed and signed off before code
- Idempotent write paths that are safe to retry
- Money and stock changes inside database transactions, with prices checked on the server
- PostgreSQL-backed background jobs and schedules you can observe
- An API with an OpenAPI spec, contract tests and a versioning policy
- Append-only audit logs
How it works.
Every phase ends with something you can read, run or check, and you decide before the next one starts.
Technical audit
A free 15-minute call about the product, the users and the constraints. You hear honestly whether RAITHub fits.
Domain model + spec
Entities, states, roles and integrations written down as an ERD and API design, reviewed by the founder.
Build, weekly demos
Endpoints land behind contract and integration tests, with a demo and changelog every Friday.
Hardening + handover
Load and latency checks, access-control tests and failure drills, then the spec, diagrams and runbooks.
Proof from systems RAITHub built.
Numbers are counted from the repositories, not estimated.
TheSkinProof
Typed, auth-gated route handlers across 5 portals, with money and stock moved inside row-locked transactions. The founder's own venture, built and run by RAITHub; 750+ tests.
Sundor Skin
189 SQL functions, 76 migrations, a hash-chained audit log and 530+ tests.
PropDesk
130+ API endpoints and 5 daily automation jobs behind a property-management SaaS.
PadhAI
An AI tutoring platform built by RAITHub as 9 Node/TypeScript and 2 Python/FastAPI services.
Fixed scope or a dedicated team. No published rates.
Every engagement starts with a free 15-minute technical audit and ends in a fixed, written quote. For market ranges, read what it costs. The pricing page explains both models.
Backend work is quoted as a fixed scope once the domain is understood. The written estimate lists its assumptions, such as the number of roles, integrations and data sources, so a change in any of them is visible before it changes the price.
When RAITHub is not the right fit.
Saying no early is cheaper for both sides than a project that was never going to fit.
A licensed financial core, such as a banking ledger, lending, custody or card issuing. RAITHub has built a client fintech dashboard and payment flows, not a regulated fintech product.
Regulated health data without a compliance partner. RAITHub has built a healthcare scheduling app, not a regulated health product.
Your procurement needs SOC 2 or ISO 27001. RAITHub is not certified.
You want backend developers embedded under your own management. RAITHub does not offer staff augmentation.
API & Backend Development questions
Straight answers to what buyers ask before they book a call.
What does a backend development service include? +
A data model signed off before code, the API and its documentation, background jobs, third-party integrations, audit logs, and tests covering every write path. RAITHub hands over an OpenAPI spec, architecture diagrams and runbooks.
How long does backend and API development take? +
RAITHub's backend engagements typically run 6 to 12 weeks at a fixed scope. Integration-heavy or multi-portal systems sit at the top of that range and are often split into phases.
How much does API development cost? +
RAITHub publishes no rates. After a free 15-minute technical audit you get a written fixed-scope estimate listing its assumptions, such as roles, integrations and data sources. The API and backend cost guide covers market rates.
Do you build microservices? +
When there is a real reason. PadhAI runs as 11 services, while TheSkinProof is a modular monolith with 217 API endpoints. Most products ship faster and cheaper as a well-structured monolith, and RAITHub will tell you so.
Can you build an API for our existing frontend or mobile app? +
Yes. The API is designed as a contract first, with an OpenAPI spec and contract tests, so any client, including a mobile app your own team builds, can depend on it without surprises.
Which databases and languages do you use? +
PostgreSQL first, through Prisma or plain SQL, with Redis where caching or queues need it, and TypeScript on Node. Python with FastAPI is used when a service calls for it, as in PadhAI.
Read before you decide.
Industries: FinTech · eCommerce · Real Estate
API and Backend Development Services: Cost, Scope and Trade-offs
How to Build Multi-Tenant B2B SaaS: Isolation, RBAC, Billing and Audit
Payments Engineering in Practice: Double Charges, Money Types and Webhooks
QA-First Development: How RAITHub Tests Software Before Users See It
Other services: SaaS Development · QA as a Service · AI-Built App Testing · Code Rescue · MVP Development · Next.js Development · QA & Test Automation · Manual & Exploratory Testing · Mobile App Testing · Security Testing · Accessibility Testing
Talk to an engineer, not a salesperson. 15 minutes, free.
Describe what you need. You get an honest read on fit, then a fixed, written quote with its assumptions.