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API, Data & Integration

We design and implement backends that connect internal operations with external services. We work with Node.js, TypeScript, Python, PostgreSQL, Redis, and object storage to build contract-first APIs, event processing, and reliable data synchronization.

What's included

  • Node.js, TypeScript, NestJS, Express, and Fastify services
  • Python and FastAPI service foundations
  • REST and OpenAPI contract design
  • PostgreSQL, MySQL, MongoDB, Redis, and object storage
  • Prisma data access and migration governance
  • Idempotency and transactional processing
  • Background jobs, retries, and event processing
  • LINE, Facebook, email, and webhook integrations

How we work

How we work

Clear steps for predictable delivery and future scalability.

  1. 01

    Requirement Analysis

    Clarify scope, success metrics, and constraints.

  2. 02

    System Design

    Architecture, security, and rollout plan.

  3. 03

    Development

    Build with reviews, docs, and testing.

  4. 04

    Deployment

    Go-live with observability and rollback options.

  5. 05

    Maintenance & Support

    Operate, improve, and report regularly.

Other services

ERP & Business Systems

One governed operating system designed around the actual business workflow.

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Web & Mobile Applications

Production-ready applications connected to APIs and operational processes.

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AI Agents & Automation

Controlled automation with traceability and human approval for consequential actions.

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Infrastructure, Platform & DevOps

Reproducible environments, safer releases, monitoring, recovery, and operational runbooks.

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Maintenance & Managed Services

Assessed, stabilized, monitored, documented, and continuously improved systems.

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Tell us what is slowing the operation down.

Share the system, workflow, integration, infrastructure, or support problem you are facing. We will help clarify the current state, the practical next step, and whether Nexus is the right delivery partner.