Senior Full-Stack Engineer: AI-Driven, Multi-Tenant Cloud

TechBiz Global GmbH; Polska; Hybrid; PLN 180,000 - 300,000; Full time

Job summary

TechBiz Global GmbH is seeking a full-stack developer to join a client team. You will build Next.js front-ends and NestJS back-ends, using Prisma ORM and cloud platforms to support multi-tenant portals.

You will work with Claude Code and Cursor AI tools, ensuring code quality through SonarCloud while collaborating with designers, PMs, and QA to deliver scalable features for millions of users.

Qualifications

• Strong JavaScript/TypeScript and Next.js expertise (App Router, Server Components, Suspense).
• Deep proficiency with NestJS for backend API development and microservices patterns.
• Prisma ORM experience including schema design, migrations, and seeding.
• Scale and performance focus: multi-tenant architectures, cloud cost optimization, and high concurrency.

Responsibilities

• Develop Next.js front-ends with pixel-perfect UI across portals.
• Build NestJS-based APIs and microservices with Prisma ORM.
• Own Prisma migrations and data integrity with QA collaboration.
• Deploy and manage infrastructure on AWS and Google Cloud Platform (dual-cloud).
• Implement multi-tenant architectures with tenant isolation at code level.
• Use Claude Code as primary AI-assisted coding tool to accelerate development.
• Leverage Cursor as AI IDE for rapid iteration and code exploration.
• Write code to pass SonarCloud quality gates on first push.
• Collaborate with designers, product managers, and QA to deliver features rapidly.
• Profile performance and optimize database queries for high throughput.

Skills

Next.js

NestJS

TypeScript

Prisma ORM

Cloud architecture

AI tooling

Tools

Claude Code

Cursor

pnpm

GitHub Actions

GitLab CI

SonarCloud

AWS

GCP

Redis/ElastiCache

Job description

TechBiz Global GmbH is seeking a full-stack developer to join a client team. You will build Next.js front-ends and NestJS back-ends, using Prisma ORM and cloud platforms to support multi-tenant portals.

You will work with Claude Code and Cursor AI tools, ensuring code quality through SonarCloud while collaborating with designers, PMs, and QA to deliver scalable features for millions of users.