You will get scalable Backend API in Go or Node.js
Top Rated
Project details
I am a Senior Backend Systems Engineer at the largest Bank in Indonesia, Bank Rakyat Indonesia (BRI). I don't just build APIs; I architect high-availability financial systems that handle millions of transactions daily.
If your current backend is slow, buggy, or unscalable, I can fix it. I specialize in High-Performance Architectures using Golang and Node.js. I write clean, strict, and secure code designed to scale from Day 1.
What I Deliver:
Performance: APIs that respond in milliseconds, not seconds.
Security: Bank-grade authentication and data protection.
Scalability: Systems built with Docker, Redis, and Kafka that won't break when you grow.
If your current backend is slow, buggy, or unscalable, I can fix it. I specialize in High-Performance Architectures using Golang and Node.js. I write clean, strict, and secure code designed to scale from Day 1.
What I Deliver:
Performance: APIs that respond in milliseconds, not seconds.
Security: Bank-grade authentication and data protection.
Scalability: Systems built with Docker, Redis, and Kafka that won't break when you grow.
Programming Languages
JavaScript, TypeScript, GoCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$100
|
Standard
$500
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 2 days | 7 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 5 | 10 |
Design Customization | - | - | - |
Content Upload | - | ||
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$50
Deployment & CI/CD Setup
(+ 2 Days)
+$200Frequently asked questions
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AG
Alpstuermer G.
Mar 5, 2026
PADELYZE Customer Support
MA
Mehmet A.
Mar 3, 2026
c# kod geliştirme
He has very high technical skills. He's a successful software developer.
MA
Mehmet A.
Feb 6, 2026
Basic Laravel API Integration for C# WinForms Desktop Application
Derwin is technically knowledgeable and communicates clearly. He understands backend systems well and approaches problems in a structured way.
About Derwin
Backend Engineer | FinTech, Go & High-Concurrency Systems (Banking)
100%
Job Success
Jakarta, Indonesia - 9:17 am local time
What I bring to your project:
- Scale & Reliability: I architect high-concurrency microservices using Go and NestJS that survive heavy production loads.
- Event-Driven Architecture: I implement Apache Kafka and RabbitMQ to ensure complex data flows are processed asynchronously and without data loss.
- Infrastructure Ownership: Unlike many backend devs, I handle my own deployments. I am proficient with Kubernetes (K3s/OpenShift), Docker, and AWS.
- Protocol Expertise: Experience with gRPC for low-latency internal communication and ISO 8583 for payment processing.
I have been shipping production code for major financial institutions since 2024.
Steps for completing your project
After purchasing the project, send requirements so Derwin can start the project.
Delivery time starts when Derwin receives requirements from you.
Derwin works on your project following the steps below.
Revisions may occur after the delivery date.
Architecture & Database Design
I analyze your requirements, design the efficient Database Schema (ERD), and plan the API structure to ensure scalability and security.
API Development & Logic
I write clean, documented code for your endpoints, implementing complex business logic, authentication, and third-party integrations.