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API & Backend Engineering

Industrial-Grade APIs and Resilient Database Architectures

Engineered for million-request scale, sub-50ms latency, and zero data corruption.

Book Free Tech Consultation Chat on WhatsApp

Starting at:Starting at $799

2-Hour SLA ResponseFree Mutual NDAKathmandu Office Team100% Source Code Ownership

Service Overview & Architecture Scope

Solidify your platform's backend infrastructure with rock-solid API design. We design scalable microservices architectures that handle high concurrency, caching, rate limiting, and third-party webhook integrations.

Enterprise Engineering Standard:All OneCom production code includes type-safe contracts, automated CI/CD unit testing, Docker orchestration, and complete architectural documentation delivered directly into your private repository.

Who Needs This Service?

Startups & Scaling Companies

Teams needing modern web or app architectures built rapidly without accumulating technical debt or risking performance bottlenecks.

Enterprises & Regulated Businesses

Companies requiring robust data integrity, IRD-compliant billing, multi-tenant RBAC permissions, and 99.9% uptime reliability.

Technical Deliverables

Modular NestJS API with full test coverageFully tested and production-ready with repository documentation.

PostgreSQL query optimization and indexing reportFully tested and production-ready with repository documentation.

OpenAPI specification and Postman collectionFully tested and production-ready with repository documentation.

Core Features & Included Capabilities

Strict input validation and sanitization pipes

Redis caching and distributed session management

Automated database migrations and indexing strategies

Interactive Swagger / OpenAPI documentation

Technologies & Architectural Stack

NestJSNode.jsPostgreSQLRedisDockerPrisma

Step-by-Step Delivery Lifecycle

Technical Scoping & Discovery

We analyze your business logic, system workflows, database models, and external APIs to formulate an immutable project specification and milestone schedule.

System Architecture & UX Blueprint

Database schemas, API contract specs, security layers, and interactive wireframes are prepared and reviewed with your stakeholders before writing production code.

Agile Sprint Development & Continuous Testing

Two-week development sprints with live staging demo environments, automated unit tests, and daily Git commits so you have continuous visibility into progress.

Production Deployment & 60-Day SLA Support

We execute automated zero-downtime deployment, SSL hardening, performance benchmarking, and provide 60 days of bug-fix warranty and monitoring.

Expected Timeline

2 - 3 Weeks

Subject to client scope finalization and technical prerequisites.

Baseline Investment

Starting at $799

Transparent milestone-based payments. No hidden platform fees.

Frequently Asked Questions

Our lead technical architect reviews your technical specifications, business logic, integrations, and performance goals. We provide an architectural roadmap, recommended tech stack, and a fixed-price milestone estimate within 24 hours.

Engineering Consultation

Ready to Build Your API & Backend Database Engineering?

Connect directly with our Kathmandu engineering desk. We evaluate your requirements and provide a detailed scope with fixed pricing within 24 hours.

Baseline Starting Price

Starting at $799

Currency: NPR • Milestone-Based Billing

Request Fixed-Price Proposal Instant WhatsApp Chat Call: +977 9800000000

Every Project Includes:

100% Full Source Code Ownership
60-Day Post-Launch Warranty
Free Docker & Cloud Deployment
Direct Senior Architect Access
Transparent Milestone Billing (NPR)

Have an RFP or PRD? Email [email protected]

Let's Build Together

Ready to Build Your API & Backend Database Engineering with OneCom?

Schedule a complimentary 30-minute discovery call with our enterprise engineering team in Kathmandu. We will review your technical requirements and deliver a scoped blueprint with fixed pricing.

Schedule Free Tech Consultation Chat on WhatsApp Office: +977 9800000000

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