You will get an API Integration: Connect Any App to Your Site
Project details
Need to connect your website to external services? Struggling with API documentation? Want your systems to talk to each other automatically?
**Common integration challenges I solve:**
• Payment gateway setup (Stripe, PayPal, Square, MercadoPago)
• CRM connections (HubSpot, Salesforce, Pipedrive, Zoho)
• Email marketing sync (Mailchimp, ActiveCampaign, Klaviyo)
• Shipping/logistics (ShipStation, EasyPost, FedEx, UPS)
• Custom webhook implementations
**What you'll get:**
• Fully functional API integration with your existing site
• Error handling and logging for debugging
• Documentation for your team
• Testing and verification before going live
**My approach:**
1. Review your requirements and existing setup
2. Design the integration architecture
3. Implement with proper error handling
4. Test thoroughly with real data
5. Document everything for future maintenance
**Platforms I work with:**
• WordPress / WooCommerce
• Laravel / PHP
• Node.js / Express
• REST APIs, GraphQL, Webhooks, OAuth
**Common integration challenges I solve:**
• Payment gateway setup (Stripe, PayPal, Square, MercadoPago)
• CRM connections (HubSpot, Salesforce, Pipedrive, Zoho)
• Email marketing sync (Mailchimp, ActiveCampaign, Klaviyo)
• Shipping/logistics (ShipStation, EasyPost, FedEx, UPS)
• Custom webhook implementations
**What you'll get:**
• Fully functional API integration with your existing site
• Error handling and logging for debugging
• Documentation for your team
• Testing and verification before going live
**My approach:**
1. Review your requirements and existing setup
2. Design the integration architecture
3. Implement with proper error handling
4. Test thoroughly with real data
5. Document everything for future maintenance
**Platforms I work with:**
• WordPress / WooCommerce
• Laravel / PHP
• Node.js / Express
• REST APIs, GraphQL, Webhooks, OAuth
Coding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$49
|
Standard
$149
|
Advanced
$399
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 12 days |
Number of Revisions | 1 | 1 | 1 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$25 - $199Frequently asked questions
About Angel
Senior Software Engineer | Data Analyst
Playa del Carmen, Mexico - 6:36 pm local time
I’m a Senior Software Engineer with 15+ years of professional experience, specialized in backend-heavy systems, APIs, data workflows, and business-critical automations. Clients usually bring me in when the system already matters — or when mistakes would be expensive.
I work primarily on fixed-price projects, with clearly defined deliverables and technical ownership.
What I help clients build
I’m a strong fit if you need:
• Backend APIs and business logic
• Systems with real-world complexity
• Data processing, integrations, and automation workflows
• AI-assisted systems (LLMs, agents, internal tools)
• Refactoring, stabilization, or production issue resolution
• Clear outcomes — not “figure-it-out-later” development
I’m not a fit for vague scopes, rushed MVPs, or experimental-only projects.
AI, Automations & Modern Systems
I design practical AI-powered workflows.
• LLM integrations (OpenAI / GPT-style models)
• AI agents for internal operations (triage, analysis, automation)
• MCP-style tool orchestration (LLM → actions → systems)
• Google Sheets / Docs / APIs automation
• Data pipelines and decision-support systems
• Human-in-the-loop and safety-aware automations
My focus is reliability, control, and auditability, not hype.
How I deliver work
• Scope and acceptance criteria defined upfront
• Architecture justified by business needs
• Clean, readable, maintainable code
• Honest timelines and risk assessment
• Documentation where it reduces future cost
My goal is not just delivery — it’s reducing long-term engineering risk.
Core technical stack
Backend & APIs
PHP, Laravel, Python, REST APIs, OAuth, JSON, Integrations
AI & Automation
LLMs, AI agents, workflow automation, API orchestration, MCP-style systems
Frontend (when needed)
JavaScript, TypeScript, Vue.js, Angular, HTML, CSS
Databases
MySQL, SQLite
Infrastructure & DevOps
AWS, Google Cloud, Docker, Linux, CI/CD
Serverless & microservices (when justified)
Engineering practices
Software architecture, system design, DDD, TDD, Agile
Senior experience & background
• 15+ years in professional software development
• Experience with long-lived, business-critical systems
• Backend-heavy, API-first architectures
• Comfortable taking over existing codebases
• Strong at diagnosing and fixing production issues
• Experience working with and leading technical teams
What clients value most
• Clear, technical communication
• No overpromising
• Predictable outcomes
• Maintainable handoff
• Low management overhead
Clients usually hire me when the project matters, not when it’s cheap.
If your project requires a senior engineer who can take ownership, define the right solution, and deliver it cleanly under a fixed scope, we’ll work well together.
Steps for completing your project
After purchasing the project, send requirements so Angel can start the project.
Delivery time starts when Angel receives requirements from you.
Angel works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery
Review your requirements and existing setup
Design
Design the integration architecture