Hire Me
@niicode
backend-focused full-stack engineer
Hey, I'm Nii Darku.
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I'm Nii Darku, a software engineer specializing in high-performance backend systems, transactional databases, and production-grade APIs that power real businesses.
From fintech platforms processing thousands of transactions to real-time trading systems—I've built and shipped software that handles real money, real users, and real stakes.
Primary Tech Stack
What I Bring
Deep Expertise
Not just writing code—engineering systems that are fast, secure, and maintainable at scale
Backend Architecture
Designing scalable APIs and microservices that handle thousands of requests per second with sub-100ms response times
Database Engineering
Building schemas optimized for transactional integrity, complex queries, and high-performance data operations
Security & Auth
Implementing robust authentication systems, RBAC, and security best practices for financial-grade applications
Full-Stack Delivery
End-to-end development from database design to polished UIs, shipping complete features independently
Performance Optimization
Profiling, caching strategies, and query optimization that cut response times and infrastructure costs
System Reliability
Building monitoring, logging, and error handling that keeps production systems healthy 24/7
Companies I've Built For
Portfolio
Featured Work
Real production systems with real impact
BusyParade
BusyOs POS System
Complete retail point-of-sale system handling inventory, payments, discounts, and real-time reporting for multiple store locations
Skippa Trading
Real-Time Trading Platform
High-performance notification system delivering trade alerts with optimized delivery speed
Why work with me?
I ship production code
Not just prototypes. Every system I've built handles real transactions, real users, and real business logic.
I own problems end-to-end
From database schema to API architecture to deployment—I deliver complete solutions, not half-finished features.
I write code that lasts
Clean, documented, tested code that other developers can understand and extend.
I communicate clearly
Technical depth with business clarity. I translate complex decisions into terms stakeholders understand.
currently available
Let's build something together
Looking for a backend engineer who can hit the ground running? I'd love to chat.