Full Stack Developer

SupportFinity™; Central Visayas; On-site; PHP 892,800 - 1,339,200; Full time

Job summary

SupportFinity™ in the Philippines is seeking an experienced Full-Stack Engineer to drive end-to-end feature development integrating AI systems and enhancing observability through metrics dashboards.

The ideal candidate will have more than 6 years of full-stack experience, particularly in Next.js, alongside advanced knowledge of TypeScript and PostgreSQL. This role focuses on creating efficient, visible, and high-performance applications.

Qualifications

• 6+ years of full-stack production experience, with at least 4 years in a Next.js or React SSR environment.
• Deep proficiency with advanced coding assistants.
• Hands-on experience building practical AI agents.
• Strong PostgreSQL fundamentals.
• Ability to read, understand, and safely extend a large existing codebase.

Responsibilities

• Drive features from database schema design through API routes to polished UI.
• Build and expand AI Agent Command Center.
• Own Sentry and Datadog dashboards for system health.

Skills

Full-stack production experience

AI-Augmented Development

TypeScript fluency

PostgreSQL fundamentals

Prisma mastery

Production-grade Observability

Backend & API Architecture

Stripe Infrastructure

Job description

Overview

We\'re building the leading digital platforms for the wedding industry & real-estate, connecting everyone through a rich, interconnected product suite. You will join a lean, high-output, AI-augmented team working on a highly opinionated, modern full-stack monolith. Our production Next.js codebase spans a B2C couple-facing web app, a B2B listing and CRM platform, a popup/campaign builder, an affiliate engine, a payments layer, and an internal AI Agent Command Center—all wired together through a shared Prisma + PostgreSQL data model. This is not a ticket-taker role. We need an engineer who thinks architecturally, understands server-side rendering boundaries, debugs relentlessly, and ships with production discipline while leveraging the latest AI tooling to multiply output.

What You\'ll Own

• End-to-End Feature Development: Drive features from database schema design through API routes to polished UI, without handing off between layers.

• AI Agent Engineering & Orchestration: Actively build and expand our AI Agent Command Center. Design custom skills (tool calling), orchestrate parallel agent workflows, manage context windows, and integrate LLMs deeply into our business logic.

• System Health & Observability: Own Sentry and Datadog dashboards. Triage error spikes, set up meaningful alerts, and close the loop on regressions before users notice.

• Architecture Decisions: Evaluate trade-offs on data modeling, caching strategies, access control patterns, and third-party integrations.

• Performance Optimization: Identify bottlenecks across the stack, including query plans, bundle size, SSR vs. client rendering, and CDN behavior.

• Integrations: Manage and scale Stripe webhooks, DigitalOcean Spaces, email delivery pipelines, and future third-party APIs.

• Code Quality: Maintain TypeScript strictness, enforce Zod validation at API boundaries, and ensure Prisma schema never drifts.

Must-Have Experience

• 6+ years of full-stack production experience, with at least 4 years in a Next.js or React SSR environment.

• AI-Augmented Development Mastery: Deep, daily proficiency with advanced coding assistants like Cursor and Claude Code. You know how to use these tools to 10x boilerplate and refactoring speed, while maintaining strict architectural control.

• Applied AI Engineering: Hands-on experience building practical AI agents. You understand system prompt engineering, giving agents "skills" (function calling), managing state across multi-agent or parallel-agent execution, and structuring reliable RAG pipelines.

• Deep TypeScript fluency: You write types to express architectural intent, not just to silence the compiler.

• Strong PostgreSQL fundamentals: You can write a migration, read a query plan, and design a schema that survives real-world load.

• Prisma mastery: Hands-on experience with migrations, complex relations, and knowing when to use raw query escape hatches.

• Production-grade Observability: Experience configuring source maps, grouping rules, custom metrics, distributed tracing, and acting on error data beyond basic SDKs.

• Backend & API Architecture: Solid understanding of REST API design, authentication patterns (JWT/session), and server-side access control.

• Stripe Infrastructure: Experience with webhooks, the subscription lifecycle, and idempotency keys.

• Legacy Navigation: Ability to read, understand, and safely extend a large existing codebase without defaulting to a rewrite.

Strong Advantages

• Experience building multi-tenant SaaS or marketplace platforms.

• Advanced LLMOps knowledge: Experience with AI evaluation frameworks (evals), minimizing token latency, or fine-tuning models for specific business domains.

• Familiarity with A/B testing infrastructure (variant assignment, event tracking, statistical significance).

• Experience building or maintaining CRM-style systems (contact lifecycles, tagging, state management) or affiliate/referral engines (attribution, payout workflows).

• Knowledge of SEO at the infrastructure level (structured data, metadata APIs, sitemap generation).

• Experience working in codebases with complex permission systems (role-based access, feature gating).

How You Work

• You are an AI-leveraged engineer: You use tools like Cursor and Claude Code to accelerate your workflow, but you never blindly trust the output. You remain the architect, the debugger, and the final reviewer.

• You verify, then act: You read existing code before touching it.

• You build lean: You write minimal, targeted changes—avoiding gold-plating and unnecessary abstractions.

• You value visibility: You treat monitoring as a first-class deliverable; a feature isn\'t done until it\'s observable.

• You are proactive: You surface architectural concerns early and communicate blockers with proposed alternatives.

• You own your output: You are comfortable deploying, watching the logs, and rolling back if necessary.

About the company

St Trinity Property Group