Full-Stack Developer

Developer Avatar
Open To Work
codeSOFTWARE BUILDER

Turning ideaslampinto software forfounders

Building, improving, scaling, and maintaining products designed to grow with your business and deliver long-term value

WORKFLOW

From Vision To Scale

A distinctive, streamlined approach to building world-class software. I connect the dots between your vision and reality.

01.Understand & Discover

Aligning on the real problem

  • Stakeholder interviews & analysis
  • Requeriments definition

02.Strategy & Architecture

Designing the right solution

  • Tech stack selection
  • System archicture & design

03.Build

Executing with quality and speed

  • Iterative delivery cycles
  • Production-ready implementation

04.Launch

Production-ready delivery

  • Release readiness
  • Monitoring & reliability checks

05.Scale

Optimizing for growth

  • Continuous improvements
  • Performance optimization

Start with a free project evaluation

Get clarity on feasibility, scope, and next steps before committing.

Services

WHAT I CAN DO

From early MVPs to complex enterprise migrations, built for resilience and scale.

deployed_code

Custom Software & MVPs

Production-ready software built to scale for digital products at any stage. Clean architecture, maintainable code, real-world results.

system_update_alt

Legacy Migration

Modernize legacy systems with zero business disruption. Monolithic architectures are re-engineered into scalable and resilient microservices; improving performance, maintainability, and long-term scalability without downtime.

Zero Downtime
Rollback Strategy
Cost Optimization
Performance Gains
Technical Debt Reduction
Multiple devices

Multi-Platform

iOSAndroidWebWindows

Native experiences across iOS, iPadOS, watchOS, macOS, Android, Web, and Windows. Single codebase architecture that maximizes code reuse while maintaining platform-specific performance and UI/UX standards.

psychology

AI Integration

Custom LLM agents and automation workflows streamline operations, eliminate manual processes and enable faster execution.

OpenAIClaudeGeminiMistralOllamaGrokDeepSeekQwenMiniMaxHuggingFaceMCP
UX/UI Design
design_services

UX/UI Design

Functional, high-fidelity interfaces that balance usability, aesthetics, and performance.

Landing Pages & Websites

High-conversion, fast, SEO-optimized.

Conversion
Analytics
Low LCP
SEO-ready
Accessible
Multi-language
Responsive
Animations
Secure
Integrations
<
>
↻
bryanacosta.com
âš™
Portfolio

Featured Projects

Production-ready software projects focused on security, scalability, and real-world performance.

Crypto Wallet Android App

View Project

Crypto Wallet Android App

Non-custodial mobile wallet with multi-chain support, real-time portfolio tracking, and secure transaction signing.

Kotlin
Java
PostgreSQL
MongoDB
Redis
Docker
Kubernetes
Restaurant Delivery iOS App

View Project

Restaurant Delivery iOS App

Cloud-native delivery platform with real-time coordination, smart dispatch, and deterministic order state management.

Swift
UIKit
Node.js
Nest.jS
TypeScript
PostgreSQL
Redis
MongoDB
Apache Kafka
AWS
AI Social Media Management Terminal App

View Project

AI Social Media Management Terminal App

Enterprise-grade automation platform for orchestrating high-volume social media and email campaigns across multiple providers.

Rust
PostgreSQL
Apache Kafka
Redis
Docker
Kubernetes
AVAILABLE FOR NEW PROJECTS

Why Work
With Me

Direct collaboration with a senior engineer who understands both the technical and business sides of your project.

schedule

24h Response Time

Quick turnaround on all inquiries

terminal

Technical Feedback

Honest assessment of your project scope

lock

NDA Ready

Your ideas stay confidential

Let's Build Something

Tell me about your project and let's discuss how we can work together

person
mail
business
expand_more