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All ServicesSpecialization 03 / 04
Core Engineering Domain

Cloud Backends & API Infrastructure (Go / Node.js)

High-throughput microservices, real-time WebSockets, and payment pipelines deployed on AWS EC2, S3, and DigitalOcean.

Mobile applications require backends that are fast, reliable, and secure. I architect robust backend systems using Go (Gin) and Node.js, integrating real-time messaging, asynchronous task queues, and global payment processors.

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Go (Golang)Node.jsGin / KtorREST APIsAWS & DigitalOceanBullMQ & Redis
Related work: UniSavi Global Admissions Platform

Core Technical Capabilities

01

Low-latency REST and WebSocket APIs optimized for mobile consumers

02

Asynchronous background job queues with Redis and BullMQ

03

Payment gateway pipelines (Stripe, PayPal, bKash, EPS, Flywire)

04

Automated deployment and Docker containerization on cloud infrastructure

Development Lifecycle & Milestones

01Phase 01

API Contract & Database Design

Designing normalized schemas (PostgreSQL / MySQL / MongoDB) and OpenAPI REST specifications.

Phase Deliverables:
Database SchemaOpenAPI DocumentationAuth Flow
02Phase 02

Server Core & Business Logic

Building high-performance API endpoints, role-based access control (RBAC), and transactional integrity.

Phase Deliverables:
Go / Node Server CoreJWT Security MiddlewareCRUD Endpoints
03Phase 03

Integrations & Queue Workers

Connecting third-party webhooks, payment settlement pipelines, and background job queues.

Phase Deliverables:
Payment HandlersRedis BullMQ WorkersFCM Push Dispatcher
04Phase 04

Cloud Deployment & Monitoring

Provisioning AWS EC2 / DigitalOcean Droplets, Nginx reverse proxies, SSL certificates, and health telemetry.

Phase Deliverables:
Live Cloud InstanceAutomated BackupsUptime Alerts

Technical FAQ

Can you build both the mobile app and the cloud backend for my project?

Yes. Handling both sides of the stack ensures zero communication gaps between mobile client data models and backend API contracts, drastically cutting development time.

Which payment gateways can you integrate?

I have production experience with Stripe, PayPal, bKash, EPS (Easy Payment System), Flywire, Flutterwave, and Google Play In-App Billing.