Senior Backend Engineer for Multi-Tenant SaaS Platform

CoDev Philippines Philippines
Remote
This Job is No Longer Active This position is no longer accepting applications
AI Summary

This role involves leading the development of a scalable, secure backend for a sophisticated SaaS application. The candidate will design data pipelines, APIs, and integrate AI/ML components. The work is fully remote within the Philippines, with flexible shift options.

Key Highlights
Lead backend development from initial build to production deployment
Design APIs, schemas, and integrate with LLM providers via Vercel SDK
Collaborate with frontend team and ensure performance, scalability, and security
Technical Skills Required
TypeScript Next.js Express.js PostgreSQL Vercel AI SDK
Benefits & Perks
Fully remote work in the Philippines
Flexible shift schedules (midshift or nightshift)

Job Description


Work set-up:

Fully remote in the PH on either midshift (4pm-1am) or nightshift schedule (9pm-6am)



The Project & Core Technical Challenge

We are building a sophisticated, multi-tenant SaaS application designed to function as an "Intelligence Layer" for our users. The core of this project is to ingest user-provided data about specific entities, enrich this data through both third-party APIs and a proprietary LLM-driven insight engine, and then orchestrate personalized, stateful action plans based on dynamic profiles.



The key technical challenges include:

  • Designing a flexible, scalable data enrichment pipeline that integrates with external APIs in real time.
  • Building a dynamic task/action generation engine powered by LLMs using the Vercel AI SDK.
  • Implementing a closed-loop feedback system that tracks action effectiveness and continuously improves AI output.



Your Responsibilities

  • Lead backend development from initial build to scalable production deployment.
  • Architect secure, high-performance APIs in TypeScript using Express (and/or Next.js API routes).
  • Design and maintain PostgreSQL schemas to handle complex user/entity/action relationships.
  • Integrate with LLM providers (e.g., OpenAI, Anthropic) via the Vercel AI SDK, and apply prompt engineering best practices.
  • Collaborate with the frontend team to ensure smooth integration with our TailwindCSS-powered Next.js UI.
  • Write robust unit and integration tests to ensure code quality and reliability.
  • Optimize application performance for scalability and low latency.



Required Tech Stack & Experience – “Must Haves”

  • Expert-level proficiency in TypeScript and Next.js.
  • Strong experience with Express.js and API architecture.
  • Solid experience designing schemas and writing queries in PostgreSQL.
  • Hands-on experience with LLM integration and the Vercel AI SDK.
  • Deep understanding of building secure, scalable multi-tenant SaaS backends.
  • Familiarity with TailwindCSS for rapid UI development and integration with backend logic.



Preferred Skills – “Nice to Haves”

  • Experience with streaming AI responses and building conversational interfaces.
  • Knowledge of cloud deployment best practices (Vercel, AWS, or similar).
  • Familiarity with Docker and CI/CD pipelines.
  • Experience with real-time APIs (WebSockets, SSE).
  • Prior work with third-party data enrichment APIs.

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