Backend engineering

Backend and API Development Services

Build the APIs, data flows, and integrations that support digital products.

Engineer APIs, databases, authentication, integrations, and cloud infrastructure for web, mobile, SaaS, and AI-enabled products.

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The challenge

Problem

Reliable product interfaces depend on well-structured APIs, data models, authentication, permissions, integrations, and operational infrastructure.

Our approach

Solution

TuneOnus builds and integrates backend systems for web, mobile, SaaS, automation, and AI-enabled product experiences.

Services

Capabilities that can be included in a backend & api development engagement.

  • API development
  • Database-backed applications
  • Authentication and permissions
  • Third-party integrations
  • Workflow and data synchronization
  • Cloud deployment architecture

Typical Deliverables

The exact deliverables depend on the agreed scope, product stage, and existing systems.

  • Backend architecture
  • API contracts and implementation
  • Database integration
  • Authentication and permission workflows
  • External system integrations
  • Testing, deployment, and handoff support

Technology Stack

Relevant technologies already represented in the TuneOnus engineering stack.

  • Node.js
  • Python
  • TypeScript
  • APIs
  • AWS
  • GCP
  • Azure
How we work

Our Process

A practical path from early product decisions to launch and continuous improvement.

  1. 01Stage 1

    Discover

    Clarify the product goal, users, requirements, and constraints.

  2. 02Stage 2

    Strategy

    Define the scope, architecture, priorities, and delivery plan.

  3. 03Stage 3

    Design

    Shape user flows, interfaces, and testable product prototypes.

  4. 04Stage 4

    Development

    Build the product in focused, reviewable iterations.

  5. 05Stage 5

    Testing

    Review functionality, accessibility, security, and performance.

  6. 06Stage 6

    Launch

    Prepare the production release, deployment, and handoff.

  7. 07Stage 7

    Improve

    Use feedback and product needs to guide the next iteration.

Industries and Product Contexts

TuneOnus can support product and workflow challenges in these repository-verified contexts.

  • Startups
  • Enterprises
  • Finance
  • Retail
  • Productivity
  • Healthcare

Backend & API Development FAQ

Answers based on the services and capabilities currently documented by TuneOnus.

Can TuneOnus build an API for an existing frontend or mobile app?

Yes. Backend and API work can support an existing interface when its data, authentication, integration, and deployment requirements are understood.

Does backend development include authentication and permissions?

It can. Authentication, role-based permissions, account workflows, and data-access boundaries can be included in the agreed backend scope.

Which backend and cloud technologies are supported?

The verified repository references Node.js, Python, TypeScript, APIs, and deployment on AWS, Google Cloud, or Azure.

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Start with context

Discuss Your Backend & API Development Project

Share your product goal, users, current stage, constraints, and the technical support you need.

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