Full-stack developer (AI-assisted development)
At TechBiz Global , we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Full-stack developer to join one of our clients ' team. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.
Responsibilities:
- Develop, optimize, and maintain Next.js-based front-end applications with pixel-perfect UI and high
performance across all 6 portals
- Build and maintain NestJS-based APIs, microservices, and scalable back-end architecture with
Prisma ORM
- Own Prisma migration workflows - schema changes, migration generation, seeding, and
coordination with QA on data integrity
- Deploy and manage infrastructure on AWS and Google Cloud Platform (dual-cloud architecture)
- Implement and maintain multi-tenant architectures with tenant isolation at the code level - each
portal has distinct user roles and data access patterns
- Use Claude Code as your primary AI-assisted coding tool to accelerate development, generate code,
debug, and refactor
- Leverage Cursor as a secondary AI IDE for rapid iteration and code exploration
- Orchestrate and configure sub-agents within Claude Code for complex multi-step development tasks
(test generation, documentation, migration scripts, code reviews)
- Build MCP (Model Context Protocol) integrations to connect AI tooling with platform data sources and
workflows
- Write code that passes SonarCloud quality gates on first push - understand code smell resolution,
quality gate criteria, and static analysis compliance (4,484+ issues being burned down in waves)
- Respond to and address feedback from 5 PR review bots (Devin, Bugbot, Codex, Copilot, Augment)
in addition to human reviewers
- Work on front-end aspects including data extraction tools, dynamic scheduling, dynamic pricing, and
workflow automation interfaces
- Optimize application performance for millions of concurrent users - efficient database queries,
connection pooling, caching strategies (Redis/ElastiCache), lazy loading, and code splitting
• Design and implement scalable data access patterns - pagination, cursor-based queries, read
replicas, and query optimization for high-throughput workloads
• Build systems that handle tens of millions of sessions without degradation - connection management,
rate limiting, graceful degradation, and horizontal scaling patterns
• Profile and resolve performance bottlenecks across the full stack: frontend rendering, API response
times, database query plans, and cache hit ratios
• Collaborate closely with designers, product managers, and QA to deliver features rapidly
• Contribute to the Marcia Enabled ecosystem - building AI-powered features across the platform
Requirements
- AI-Assisted Development (Critical): Proven, daily experience using Claude Code (or equivalent
agentic coding tool) as your primary development environment. You must demonstrate fluency in
prompt engineering for code, sub-agent orchestration, multi-file refactoring via AI, and AI-driven test
generation.
- Claude Code & Sub-Agents: Hands-on experience configuring and using sub-agents for parallelized
tasks - writing tests, generating docs, running migrations, and reviewing PRs via AI.
- Cursor / AI IDE: Comfortable using Cursor as a secondary tool for code exploration, inline
completions, and rapid prototyping.
- Strong JavaScript/TypeScript and Next.js expertise (App Router, Server Components, Suspense)
- Deep proficiency with NestJS for backend API development, microservices patterns, and Prisma
ORM (schema design, migrations, seeding)
- Scale & Performance (Critical): Proven experience building and optimizing applications serving
millions of users with high concurrency. You must understand database query optimization,
connection pooling, caching strategies, horizontal scaling patterns, and how to profile and resolve
bottlenecks across the full stack.
- Cost Optimization: Experience id