Full Stack Developer

Alasia LLC; Metro Manila; On-site; PHP 1,200,000 - 3,000,000; Full time

Job summary

Alasia LLC is seeking an expert-level Senior Full-Stack Software Engineer to own end-to-end delivery of modern web platforms, SaaS products, and AI-enabled software. You will architect, develop, test, and deploy features across web, mobile, and APIs, collaborating with teams and aligning with business goals.

You should bring 7+ years of experience, strong JS/TS and React/Next.js skills, plus backend fluency in Node.js, .NET, or Python. Cloud and AI tool experience are highly valued.

Qualifications

• 7+ years of professional development experience.
• Broad experience across front-end and back-end stacks listed.
• Experience with REST APIs, JSON, HTTP/HTTPS, OAuth, JWT, webhooks.
• Experience with SQL databases like PostgreSQL/MySQL.
• Experience with mobile development (React Native or Flutter).
• Experience deploying AI-enabled software and integrating AI APIs.

Responsibilities

• Build modern web platforms, SaaS products, mobile apps, APIs, internal systems, and AI-enabled software.
• Take business ideas from concept through architecture, development, testing, deployment and launch.
• Review, debug, secure, and improve code produced by AI-assisted tools.
• Integrate third-party APIs and payment systems.
• Design and implement scalable system architecture.
• Experience deploying AI agents and related infrastructure.

Skills

JavaScript/TypeScript

React/Next.js

Node.js

.NET

Python

Laravel

REST APIs

PostgreSQL MySQL

React Native Flutter

Cloud platforms

Git GitHub CI/CD

Docker

Stripe PayPal payments

AI API integration

AI-assisted development tools

Tools

GitHub Actions

Docker

CI/CD pipelines

Job description

About the role

We are seeking an expert-level Senior Full-Stack Software Engineer who can take a business idea from concept through architecture, development, testing, deployment, and launch. This is not a junior or narrowly focused developer role. We are looking for someone with broad technical depth who can independently build modern web platforms, SaaS products, mobile applications, APIs, internal systems, and AI-enabled software.

Key responsibilities

• Build modern web platforms, SaaS products, mobile applications, APIs, internal systems, and AI-enabled software

• Take business ideas from concept through architecture, development, testing, deployment, and launch

• Review, debug, secure, and improve code produced by AI-assisted development tools

• Integrate third-party APIs and payment systems

• Design and implement system architecture for scalable applications

• Experience designing and deploying AI agents, MCP servers, and all associated work.

About you

• 7+ years of professional development experience

• Strong professional experience across most of the following: JavaScript / TypeScript, React / Next.js, Node.js and/or another strong backend stack such as .NET, Python, or Laravel

• Experience with REST APIs, JSON, HTTP/HTTPS, OAuth, JWT, webhooks

• Experience with PostgreSQL / MySQL / SQL databases

• Experience with React Native or Flutter for mobile development

• Experience with AWS, Azure, GCP, DigitalOcean, Vercel, or similar cloud platforms

• Experience with Git, GitHub, CI/CD, Docker

• Experience with Stripe, PayPal, subscription billing, or other payment integrations

• Experience with third-party API integrations

• Experience with authentication, permissions, and secure application development

• Experience with AI API integration, including OpenAI, Anthropic, or similar platforms

• Experienced in using AI-assisted development tools such as Claude Code, Cursor, GitHub Copilot, and ChatGPT productively

• Has built and launched complete production applications

• Understands system architecture

• Comfortable learning new languages or frameworks when required

• Has personally built SaaS platforms, mobile apps, payment systems, scalable web applications, or AI-powered products from the ground up