.
Heyyy ๐ค I'm super duper excited that you made it here.
Over the last six years, I have architected high-scale Low code / no-code software, custom AI workflows, and AI agent integrations that turn raw ideas into market-ready products. I do not build brittle prototypes. I deploy production-grade, multi-agent automated ecosystems, advanced API integrations, and robust Xano-backed apps engineered to handle heavy traffic, real transactions, and complex logic seamlessly, using Bubble io, n8n, Cursor AI, Claude Code, Make com e.t.c, working on and off Upwork.
My story starts the same way most of my clients' stories do. I wanted to work on an idea, and no budget to build it. During the COVID lockdown in 2019, I needed an MVP for a local restaurant delivery platform. No $80,000 for a dev team lol. So I figured it out myself on Bubble io. The app didn't blow up, but the lesson did. I learned that the fastest path from idea to product isn't always code. Sometimes it's knowing exactly which tool to reach for. That's the lens I bring to every project.
Here's what that looks like in practice;
๐๐ I built a creator marketplace for a client in the photography and videography space, handling tiered memberships, escrow payments, a DreamTeam feature, and a points system, all inside Bubble.
โญโ For Kelvin, I architected Stripe Connect infrastructure with custom payout routing and Google Maps API integration for a Thailand-based marketplace.
โ๐ For Myles, I engineered an automated broker booking database combining JotForm intake with Airtable operations. I integrated an algorithmic Pricing Matrix lookup with custom Stripe PaymentIntents to automate client creation and secure real-time credit card holds. The deployed system completely removes data entry, instantly creating records and updating booking statuses upon payment authorisation.
These aren't simple form-and-database builds. They're systems with moving parts, and that's where I'm most comfortable.
Hey, now here's where it gets relevant to you;
From my experience, I have learned one critical truth: you do not want your time wasted, and I refuse to waste mine. I am strictly outcome-oriented. My goal is to capture your ideal product vision, strip away the noise, boil down the core technical problems, and ship a functional product ready for your review in the shortest timeframe possible. If your project requires robust engineering beyond a clean interface, I wire up the heavy backend automation to match. My development stack utilises bubble io or Lovable and Base44 for rapid, AI-assisted frontend builds, paired with make or n8n to drive complex, multi-step workflow logic that operates flawlessly without manual intervention. Whether you need no-code apps to communicate with external APIs and sync data back automatically, or a high-performance Lovable frontend that updates in real time based on automation payloads, I build it to scale. I engineer your systems to handle errors, process transactions, and run autonomously so you can focus entirely on growing your business.
The point is, whatever stage your project is at, I can meet you there. Figma file ready? I'll build from it. Just an idea? I'll help you scope it properly before we touch a single tool. Existing app that's half-broken or stalled at a milestone? I've rescued those, too.
What I won't do is take on a project I can't deliver or overpromise a timeline just to win the contract. I'd rather have a straight conversation upfront than go quiet on you three milestones in.
If any of this sounds like what you need, let's do a quick discovery call. When would you be available for that?
keywords****
Bubble MVP Developer Bubble API Connector Bubble SaaS Blueprint Bubble Database Optimisation Bubble Plugin Development Bubble Mobile App Responsive Bubble Design No Code Marketplace Bubble Webhook Integration Bubble UI UX Fix Bubble Xano Backend Bubble Stripe Integration Bubble CRM Development Bubble App Migration Bubble Troubleshooting Expert
AI Agent Workflow Vibe Coding Engineer Claude Engineer Integration Cursor AI Developmentv0 dev prototyping LLM Fine Tuning RAG Pipeline Setup Custom GPT Builder AI Chatbot Integration OpenAI API DeveloperLangChain SpecialistVector Database Setup AI SaaS Developer Prompt Engineering Optimisation Automated Content Pipeline
Make com Automation Expert Zapier Enterprise Integration AI Automation Agency (AAA)HubSpot Automation Workflow n8n Self Hosted CRM Data Sync Ecommerce Order Automation Automated Lead Generation Slack Bot Automation Airtable Database Automation API Workflow Engineer QuickBooks Automation Integration Automated Onboarding System Real Estate Lead Automation Social Media Automation Engine
API Development
No-Code Development
Web Application
Bubble.io
Dashboard
Low-Code Development
AI App Development
AI Agent Development
n8n
Automated Workflow
Business Development
Payment Integration Framework
Stripe API
API Integration
AI Bot
Chatbot
Make.com
App Marketplace
AI Marketplace
App Development
Benjamin E.
Ondo, Nigeria
$40/hr
5.0
3 jobs
Your Amadeus or Sabre integration is broken, stalled, or was left half-built
by a developer who disappeared and every day it stays that way costs you
bookings.
I'm a travel tech developer who specializes in one thing: GDS and NDC
integrations, Amadeus, Sabre, and direct airline NDC connections for
OTAs, travel agencies, tour operators, and travel management companies.
I don't build general websites or generic booking widgets. This is the
only thing I do.
Worth knowing: major airlines; Lufthansa Group, Air France-KLM, Turkish
Airlines; have introduced or raised GDS booking surcharges throughout
2026 specifically to push agencies toward NDC. If you're still running
GDS-only, that's now a measurable, growing cost, not a someday problem.
If any of this sounds familiar:
- Amadeus or Sabre integration failing, timing out, or erroring in production
- A GDS project a previous developer left unfinished or undocumented
- NDC integration for direct airline content, fare bundles, or ancillary services
- PNR creation, ticketing, IRROPS, or refund/cancellation workflows breaking
- A booking engine that can't handle real traffic or multi-supplier sync
...I can look at it today and give you a straight answer on what's wrong
and what it'll take to fix.
What I do:
- Amadeus & Sabre GDS integration โ PNR, ticketing, fare search, IRROPS
- NDC integration โ direct airline connections, fare bundles, seat maps,
ancillary services
- OTA & booking engine development โ flight, hotel, car rental
- API integration & automation โ REST/SOAP, n8n, CRM, payment gateways
I work best with:
- OTA founders and travel startups who need a working, production-grade
GDS/NDC connection, not just a demo
- Travel agencies whose current integration is broken or was abandoned mid-build
- Teams who need someone who's actually shipped NDC, not just listed it
as a skill on a profile
What I don't do: general web design, unrelated CRM builds, or non-travel
API work. If your project isn't GDS, NDC, or travel booking infrastructure,
I'm probably not your best fit and I'll tell you that upfront.
Quick answers:
Q: Amadeus, Sabre, or both? Both, plus NDC direct-airline connections.
Q: Can you audit an existing broken integration first? Yes, I offer a
fast paid diagnostic before any full rebuild commitment.
Q: Do I need to provide GDS credentials? Usually yes, your existing
Amadeus/Sabre/NDC sandbox or production access. Happy to advise on
certification steps if you don't have it yet.
Recent work: built a full NDC booking flow for a Netherlands-based OTA
fare bundles, seat maps, ancillary services, live ticket issuance on
Amadeus NDC. ID-verified, 100% Job Success.
Tell me what's breaking or what you're building, and I'll give you a
straight answer on scope and timeline.
Google Maps API
API Development
DevOps
Node.js
API Integration
Amadeus CRS
Sabre
REST API
Travel Planning
PHP
AWS Application
Software Development
Travel
Customer Service
Booking Management System
Booking Website
Travel Itinerary
GIS Software
Travel & Hospitality
Map Integration
Akintayo P.
Lagos, Nigeria
$20/hr
5.0
15 jobs
โญTop Rated Upwork Freelancer
๐Top 1% Full-Stack Developer on Upwork
๐งKnown For Solving Complex Problems Others Initially Underestimate
๐ฐ$1M In Client Revenue Generated
I help founders and businesses turn ideas, AI prototypes, and existing applications into production-ready web, mobile, and SaaS products.
Have an idea that needs to become an MVP?
Have a Lovable, Replit, or Base44 prototype that needs to become a real product?
Have an existing application that is broken, incomplete, or difficult to scale?
I can take it from where it is now to a working product ready for real users.
๐ป FULL-STACK DEVELOPMENT
I handle the complete application stack:
โ Frontend development
โ Backend development
โ Database architecture
โ APIs and integrations
โ Authentication and user management
โ AI integrations
โ Payments and subscriptions
โ Debugging and optimization
โ Testing and deployment
Stack: React, Next.js, TypeScript, JavaScript, Node.js, React Native, Supabase, PostgreSQL, Firebase, REST APIs, Stripe, Webhooks, Vercel, AWS, Railway.
AI APP DEVELOPMENT
I build AI-powered web and mobile applications and integrate AI into existing products:
โ LLM integrations
โ OpenAI API
โ AI agents
โ AI-powered workflows
โ Intelligent automation
โ AI search and recommendation features
โ AI SaaS applications
๐ SAAS & MVP DEVELOPMENT
Need to turn an idea into a real SaaS product?
I can build:
โ SaaS platforms
โ Multi-tenant applications
โ User roles and permissions
โ Authentication systems
โ Stripe subscriptions and payments
โ Databases and APIs
โ AI features
โ Admin dashboards
โ MVPs โ Production-ready applications
LOVABLE, REPLIT & BASE44 DEVELOPMENT
Already built your application with AI?
You don't necessarily need to rebuild it.
I work with Lovable, Replit Agent, Base44 and Claude Code to debug AI-generated applications, fix backend and database issues, add features, improve architecture, integrate APIs and move AI-built prototypes toward production.
๐ RESULTS I'VE DELIVERED
๐ AI-powered home listings platform: Built using Base44 + Replit.
๐ Base44 SaaS application: Migrated from a prototype into scalable multi-tenant architecture using React + Supabase.
๐ AI-powered dating app MVP: Stabilized and moved toward production readiness inside an existing codebase.
๐ Luxury real estate mobile application: Redesigned and fixed using Lovable + Replit.
๐ Replit/Supabase application: Diagnosed and resolved a complex PostgreSQL backend issue.
๐ AI SaaS platform: Continuous feature development and delivery over an extended engagement.
Clients have highlighted my Full-Stack Development, AI development, SaaS architecture, problem-solving, speed, attention to detail, and ability to work inside existing codebases.
๐ฏ WHY CLIENTS HIRE ME
Full-Stack ownership: Frontend โ backend โ database โ APIs โ AI โ payments โ deployment
AI-native development: Use modern AI tools to move from idea to working software faster.
Problem solving: I investigate existing applications before recommending unnecessary rebuilds.
Production focus: The goal isn't just a demo. It's a product real users can actually use.
Complete product development: Web โ Mobile โ AI Apps โ SaaS
COMMON CLIENT PROBLEMS I SOLVE:
โI need a Full-Stack Developer to build my application.โ
I can handle the complete development process from architecture and frontend to backend, database, APIs, AI features and deployment.
โI built my app with Lovable, Replit or Base44. Can you take it over?โ
Yes. I can work inside your existing AI-built application, fix problems, add features, improve the architecture and prepare it for production.
โMy AI-generated application is broken. Do I need to rebuild it?โ
Not necessarily. I diagnose the existing codebase first and determine what actually needs to be fixed.
โCan you build a SaaS application?โ
Yes. I can build SaaS platforms with authentication, multi-tenant architecture, databases, APIs, Stripe payments and AI features.
โCan you build web and mobile applications?โ
Yes. My Full-Stack Development services cover web applications and mobile applications, including React Native.
MY APPROACH:
Fast doesn't have to mean fragile.
AI development lets businesses move from idea to software faster. I combine that speed with Full-Stack engineering, architecture, debugging and production development.
Idea โ Architecture โ MVP โ AI Features โ Full-Stack Development โ Testing โ Deployment โ Production
Whether you're building from scratch, improving an existing SaaS, rescuing an AI-built application, or adding AI to an existing product, I'll help you turn the technology into a reliable product your customers can actually use.
Have something you're trying to build, fix, scale, or launch? Send me a message and tell me what you're working on and I will respond within 5minutes
Web Development
PostgreSQL
Supabase
Replit
Node.js
Next.js
AI App Development
SaaS Development
React
Full-Stack Development
Stripe API
AI Development
AI Mobile App Development
API Integration
React Native
Android App Development
Generative AI Prompt Engineering
Lovable
Mobile App Development
Oswald O.
Surulere, Nigeria
$20/hr
5.0
4 jobs
Struggling to make sense of your location-based data? With 7+ years of dedicated experience in GIS analysis, advanced cartography, and interactive web mapping, I empower organizations and local agencies to unlock the strategic potential hidden within their geospatial information.
How I Deliver Value to You:
Data-Driven Decision Making: I translate complex spatial datasets into clear, compelling thematic maps and visualizations that highlight critical trends and inform strategic choices.
Optimized Planning & Development: Leverage my expertise in urban, environmental, and infrastructure mapping to support effective planning, resource management, climate resilience initiatives, and disaster response.
Advanced Spatial Insights: Utilize cutting-edge remote sensing and spatial modeling techniques to uncover hidden patterns, predict future scenarios, and identify optimal solutions.
Engaging Interactive Web Maps: Create dynamic, user-friendly web maps and GIS applications using Esri's powerful suite, making your data accessible and interactive for stakeholders.
Proven Impact Across Industries:
Public Safety: Developed GIS planning tools for dignitary protection and crowd control for the San Diego Police Department.
Environmental Security: Designed GIS-based site suitability analyses for surveillance against illegal mining in Zamfara State, Nigeria.
Urban Economics: Conducted in-depth spatial economic analysis for New York City, utilizing GeoDa and Python.
Community Development: Created data models and neighborhood planning maps for the Association of Calgary Communities.
My Toolkit: ArcGIS Pro, QGIS, Google Earth Engine, GeoDa, Python, Remote Sensing APIs, Esri Apps.
Why Partner with Me?
Client-Centric Solutions: I focus on understanding your unique challenges and delivering tailored spatial solutions that drive tangible results.
Strategic Impact: My passion lies in using GIS to foster community growth, promote sustainability, and drive innovation.
Ready to visualize your opportunities and solve your spatial challenges? Let's connect and map a smarter future for your project.
Google Maps API
Map Illustration
ArcGIS
ArcGIS Online
QGIS
Remote Sensing
Geocoding
Python
3D Modeling
Leaflet
Matplotlib
GeoJSON
OpenStreetMap
Cesium
Mapbox
Mike O.
Ijebu Ode, Nigeria
$15/hr
5.0
15 jobs
Iโm a Full-Stack Developer specializing in building scalable SaaS platforms, AI-powered applications, web applications, and mobile apps for startups, businesses, and growing companies.
I help turn ideas, Figma designs, existing products, and business requirements into production-ready software, from MVP development and product architecture to frontend development, backend engineering, API integrations, database design, AI integration, deployment, and ongoing optimization.
My core stack includes React.js, Next.js, TypeScript, JavaScript, Node.js, NestJS, PostgreSQL, Supabase, MongoDB, React Native, Flutter, AI APIs, and cloud technologies.
Whether you need to launch a new SaaS MVP, build an AI-powered product, develop a customer portal, create a marketplace, modernize an existing application, integrate third-party APIs, or automate business workflows, I can handle the development lifecycle from idea to production.
๐ช๐ต๐ฎ๐ ๐ ๐๐๐ถ๐น๐ฑ
- SaaS Platforms & Web Applications
- Startup MVPs & Product Development
- AI-Powered Applications
- AI Chatbots & AI Integrations
- CRM & Business Management Systems
- Customer Portals & Admin Dashboards
- Marketplace & Multi-Vendor Platforms
- Booking & Reservation Systems
- FinTech & Payment Platforms
- Healthcare & Telehealth Applications
- Real Estate Platforms
- E-commerce Applications
- Mobile Applications for iOS & Android
- React Native & Flutter Applications
- Chrome & Browser Extensions
- API Integrations & Custom REST APIs
- Workflow & Business Automation
- Stripe & Payment Integrations
- Cloud Deployment & Application Scaling
๐ ๐ ๐๐ผ๐ฟ๐ฒ ๐ง๐ฒ๐ฐ๐ต ๐ฆ๐๐ฎ๐ฐ๐ธ
Frontend
React.js, Next.js, TypeScript, JavaScript, Tailwind CSS, HTML5 / CSS3, React Query, Redux, Responsive Web Development
Backend
Node.js, Express.js, NestJS, REST API Development, API Architecture, Authentication & Authorization, JWT, OAuth, Serverless Functions
Database & Backend Services
PostgreSQL, Supabase, MongoDB, Firebase, MySQL, Database Design, Database Optimization, Row-Level Security
AI & Automation
OpenAI API, GPT-4 / GPT-based Applications, Claude API, AI Chatbots, AI Agents, AI SaaS, LLM Integrations, AI Workflow Automation, Business Process Automation, n8n, Make, Zapier
Mobile Development
React Native, Expo, Flutter, iOS Applications, Android Applications, Cross-Platform Mobile Development
APIs, Payments & Integrations
REST APIs, Third-Party API Integration, Webhooks, Stripe, Stripe Connect, PayPal, Twilio, Google Maps API, SendGrid
Cloud & DevOps
AWS, Docker, Vercel, Cloudflare, GitHub Actions,CI/CD, Cloud Deployment, Application Performance Optimization
๐๐ผ๐ ๐ ๐๐ฒ๐น๐ฝ ๐ฆ๐๐ฎ๐ฟ๐๐๐ฝ๐ & ๐๐๐๐ถ๐ป๐ฒ๐๐๐ฒ๐
I don't just write code. I help turn product ideas into reliable software that can actually be used, maintained, and scaled.
๐ ๐ฐ๐ฎ๐ป ๐ต๐ฒ๐น๐ฝ ๐๐ผ๐ ๐๐ถ๐๐ต:
- Product and MVP planning
- Technical architecture
- Figma-to-React/Next.js development
- Full-stack web application development
- SaaS architecture and development
- AI feature implementation
- API and third-party integrations
- Database architecture
- Authentication and user management
- Payment processing
- Admin dashboards
- Mobile application development
- Workflow automation
- Cloud deployment
- Performance optimization
- Bug fixing and existing application improvements
- Scaling and long-term product development
๐ช๐ต๐ฎ๐ ๐ฌ๐ผ๐ ๐๐ฎ๐ป ๐๐ ๐ฝ๐ฒ๐ฐ๐
- Clean, maintainable, production-ready code
- Scalable frontend and backend architecture
- Responsive and intuitive user interfaces
- Secure authentication and data handling
- Well-designed PostgreSQL, Supabase, and MongoDB databases
- Reliable API integrations and webhooks
- AI integrations built around real business use cases
- Mobile and web applications that work together seamlessly
- Proper deployment and production configuration
- Clear communication and regular progress updates
- Proactive technical recommendations when I see a better solution
๐ช๐ต๐ ๐ช๐ผ๐ฟ๐ธ ๐ช๐ถ๐๐ต ๐ ๐ฒ?
You get more than a developer who simply receives tasks and writes code.
I approach every project from both a technical and product perspective. I think about how the application should work today, how it can be maintained tomorrow, and how the architecture can support growth as your users and business requirements increase.
Whether you're starting from an idea, have an existing Figma design, need an MVP launched, or have an application that needs new features and improvements, I can help take it from development to a reliable production system.
If you're looking for a Full-Stack Developer, React Developer, Next.js Developer, Node.js Developer, SaaS Developer, AI Developer, React Native Developer, or API Integration Specialist, send me a message with your project requirements.
๐'๐บ ๐ต๐ฎ๐ฝ๐ฝ๐ ๐๐ผ ๐ฟ๐ฒ๐๐ถ๐ฒ๐ ๐๐ผ๐๐ฟ ๐ถ๐ฑ๐ฒ๐ฎ, ๐ถ๐ฑ๐ฒ๐ป๐๐ถ๐ณ๐ ๐๐ต๐ฒ ๐ฏ๐ฒ๐๐ ๐๐ฒ๐ฐ๐ต๐ป๐ถ๐ฐ๐ฎ๐น ๐ฎ๐ฝ๐ฝ๐ฟ๐ผ๐ฎ๐ฐ๐ต, ๐ฎ๐ป๐ฑ ๐ต๐ฒ๐น๐ฝ ๐๐ผ๐ ๐ฝ๐น๐ฎ๐ป ๐๐ต๐ฒ ๐ป๐ฒ๐ ๐ ๐๐๐ฒ๐ฝ.
Mobile App Development
App Development
React Native
iOS Development
Android App Development
Next.js
React
Node.js
TypeScript
Full-Stack Development
API Integration
Supabase
Firebase
Stripe
PostgreSQL
App Store
Google Play
DevOps Engineering
AI Development
Claude
Richard I.
Alimosho, Nigeria
$20/hr
5.0
6 jobs
I build production-grade data pipelines for location data, the kind that survive real scale, messy sources, and senior technical review. Most data engineers can't work in GIS, and most GIS specialists can't ship reliable pipelines. I do both, which is exactly what location-heavy projects need.
If you're working with geographic data, satellite or aerial imagery, parcel and infrastructure records, point-of-interest datasets, anything tied to coordinates, I turn it into clean, queryable, automated systems instead of one-off scripts that break the moment the source changes.
What I do:
- Geospatial ETL pipelines (PostGIS, geopandas, rasterio) that ingest, clean, and structure spatial data at scale
- Remote-sensing and imagery workflows, sourcing, tiling, and organizing aerial/satellite data across many locations
- Web scraping and data extraction (Playwright, BeautifulSoup) with proper deduplication, rate-limit handling, and validation
- Config-driven, schema-adaptive pipelines that adapt to new sources without a rewrite
- Spatial APIs and mapping backends (FastAPI, PostgreSQL/PostGIS, Leaflet)
- AI-connected spatial systems (MCP servers that expose PostGIS queries and geospatial tools to AI assistants)
How I work: I diagnose the real bottleneck before writing code, I'm honest about tradeoffs (including when the hard part is data cost or source limits, not engineering), and I build for handoff, documented, maintainable, and yours.
Proof:
- Processed 6M+ US building permit records through a config-driven ETL pipeline (ConstructIQ)
- Built a nationwide vendor directory of 4,400+ records via multi-phase scraping and enrichment (EventStarted)
- Mapped fiber infrastructure across Lagos State in PostGIS (UDIGAP)
- Built hybrid MCP servers exposing PostGIS and standalone geospatial tools to AI assistants, published to Glama (geo-mcp)
- B.Sc. in Surveying & Geoinformatics โ the geospatial fundamentals behind the engineering
Tell me what your data looks like and what you need out of it, and I'll map the approach against your constraints before we talk price.
Python
SQL
GIS
Data Analysis
PostGIS
Geospatial Data
Remote Sensing
QGIS
Google Earth
Spatial Analysis
ETL
Data Engineering
Web Scraping
Data Extraction
FastAPI
PostgreSQL
API Integration
Data Mining
Data Visualization
Git
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
โUpwork provides an umbrella-level of security. I can see a talentโs work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.โ
KD
Kim Darling
Emerald Tiger
โUpwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.โ
DM
David Merry
Kinetic Investments
โOur very specific requirements can be a challengeโWith Upwork, weโre able to access a bigger community to ensure the success of our projects.โ
KK
Katja Krohn
Summa Linguae
How do I hire a Google Maps API Developer in Nigeria on Upwork?
You can hire a Google Maps API Developer in Nigeria on Upwork in four simple steps:
Create a job post tailored to your Google Maps API Developer project scope. We'll walk you through the process step by step.
Browse top Google Maps API Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top Google Maps API Developer profiles and interview.
Hire the right Google Maps API Developer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Google Maps API Developer?
Rates charged by Google Maps API Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Google Maps API Developer in Nigeria on Upwork?
As the world's work marketplace, we connect highly-skilled freelance Google Maps API Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Google Maps API Developer team you need to succeed.
Can I hire a Google Maps API Developer in Nigeria within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Google Maps API Developer proposals within 24 hours of posting a job description.
Find more freelancers
Top cities for Google Maps API Developers in Nigeria