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⚡ Backend & APIs • High Throughput Microservices

High-Performance REST & GraphQL APIs with Sub-50ms Latency

Connect third-party payment gateways, CRM databases, logistics partners, and external SaaS platforms. We build bulletproof endpoints protected by cryptographic signatures, rate limiting, and Redis caching.

API Integration & Microservices Graphic Architecture
<50ms Response Latency
Architectural Baseline
HMAC-SHA256 Security
Engineered Capability
Swagger / OpenAPI Ready
Performance Target
Zero Downtime
IP Transfer & Rights
Core Architecture

What We Build & Deliver

Production-grade engineering standards applied to every layer of your api integration & microservices sprint.

01

Payment Gateway Integration

NPCI UPI dynamic QR, Razorpay, Cashfree, and Stripe integrations with webhook reconciliation.

02

Redis Cache Acceleration

Sub-50ms query caching, token bucket rate limiting, and distributed session storage.

03

Cryptographic Verification

HMAC-SHA256 request signatures, JWT authentication, and AES-256 payload encryption.

04

Interactive API Documentation

Full Swagger/OpenAPI interactive specifications with mock request generators.

05

Bi-Directional WebSockets

Sub-second real-time event streaming for chat, live bidding, and telemetry monitors.

06

Microservice Containerization

Dockerized microservice deployments with health check probes and automated restart policies.

Battle-Tested Tech Stack

Modern tooling selected for speed, security, and developer ergonomics.

⚡ Express ⚡ Node.js ⚡ Redis ⚡ PostgreSQL ⚡ GraphQL ⚡ JWT ⚡ HMAC-SHA256 ⚡ OpenAPI/Swagger
Sprint Methodology

How We Ship Your Project

From initial requirement analysis to live production launch with zero ambiguity.

STEP 01

Scoping & Architecture

Technical specification, milestones breakdown, and NDA execution.

STEP 02

Wireframes & Design

Component system, responsive UI layouts, and prototype validation.

STEP 03

Bi-Weekly Sprints

Rapid full-stack coding with live staging deployments at every milestone.

STEP 04

Automated QA & Audit

Security hardening, load stress tests, and cross-device testing.

STEP 05

Launch & 100% IP Handover

Production cutover, DNS routing, and complete Git repo transfer.

Transparent Investment

Straightforward Pricing Tiers

No hidden fees or unexpected billing spikes. Fixed milestones, dedicated sprints, and predictable ROI.

Bug Fix & Integration

Starter Sprint

₹999 – ₹1,999

Ideal for rapid bug fixing, payment gateway API setup, or background workflow automation.

  • ✓ Emergency bug triage & UI fixes
  • ✓ Payment gateway API (TranzUPI / Razorpay)
  • ✓ Automated WhatsApp / Email alert triggers
  • ✓ Same-day or 48-hour delivery
  • ✓ 100% source code handover
Book Starter Sprint ⚡
Full-Stack Custom

Custom Software Suite

₹4,499 – ₹4,999

Full-stack web application, client portal with database, or custom desktop software (Electron/Python).

  • ✓ Full-stack Web App or Desktop Software (PC/Mac)
  • ✓ User authentication, databases (PostgreSQL/MongoDB)
  • ✓ Interactive management dashboards & tables
  • ✓ Dynamic NPCI UPI QR & instant payment verification
  • ✓ Full commercial IP transfer & setup guide
Book Custom Suite 💻

Interactive Project Cost Estimator

Get an instant preliminary estimate tailored to your project scope.

Estimated Investment Range:
₹45,000 – ₹75,000
Let's Build Together

Start Your DevCraft Project

Tell us what you want to build. We will review your requirements, prepare a comprehensive technical architecture proposal, and respond within 24 hours.

✓ Strict Non-Disclosure Agreement (NDA) on request
✓ Detailed scope & fixed-cost quotation guarantee
✓ Direct communication with Senior Software Architect

Send Project Inquiry

Fill in the specifications below to initiate your sprint.

WhatsApp DevCraft Direct Studio Call
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Inquiry Received Successfully!

Thank you for reaching out to DEVCRAFT. Our lead software architect will review your project requirements and connect with you via email and WhatsApp within 24 hours.

Inquiry Ref: DC-INQ-705532