Full-stack developer (AI-assisted development)
TechBiz Global GmbH6 months ago
Remote, WorldwideSenior
Responsibilities
- Develop, optimize, and maintain Next.js front-end applications across six portals.
- Build and maintain NestJS APIs, microservices, scalable back-end architecture, and Prisma ORM workflows.
- Own Prisma schema changes, migration generation, seeding, and coordination with QA on data integrity.
- Deploy and manage dual-cloud infrastructure on AWS and Google Cloud Platform.
- Implement multi-tenant architectures with code-level tenant isolation and distinct portal access patterns.
- Use Claude Code, Cursor, and Claude Code sub-agents for AI-assisted coding, testing, documentation, migrations, code reviews, debugging, and refactoring.
- Build MCP integrations connecting AI tooling with platform data sources and workflows.
- Meet SonarCloud quality gates and address feedback from automated PR review bots and human reviewers.
- Build interfaces for data extraction, dynamic scheduling, dynamic pricing, and workflow automation.
- Optimize full-stack performance for millions of concurrent users through query optimization, connection pooling, caching, lazy loading, code splitting, pagination, read replicas, rate limiting, graceful degradation, and horizontal scaling.
- Profile and resolve front-end rendering, API, database, and cache performance bottlenecks.
- Implement real-time features and collaborate with designers, product managers, and QA on platform features.
Requirements
- Strong JavaScript/TypeScript and Next.js expertise, including App Router, Server Components, and Suspense.
- Deep proficiency with NestJS, backend APIs, microservices patterns, and Prisma schema design, migrations, and seeding.
- Proven daily experience with Claude Code or an equivalent agentic coding tool, including prompt engineering, sub-agent orchestration, multi-file refactoring, and AI-driven test generation.
- Experience using Cursor as a secondary AI IDE for code exploration, inline completions, and rapid prototyping.
- Proven experience building and optimizing applications serving millions of users with high concurrency.
- Understanding of database query optimization, connection pooling, caching, horizontal scaling, and performance profiling.
- Experience optimizing cloud spend, database costs, infrastructure sizing, compute usage, and memory consumption at scale.
- Proficiency with AWS services including ECS, Lambda, S3, CloudFront, RDS, and SQS, and Google Cloud Platform services including GKE, Cloud Run, BigQuery, and Cloud Functions.
- Experience with multi-tenant front-end and back-end architectures and tenant isolation.
- Core experience with Redis or ElastiCache for caching and session management.
- Experience with pnpm monorepos and pnpm workspaces.
- Understanding of SonarCloud quality gates, code smell categories, and static analysis compliance.
- Proficiency with CI/CD pipelines and deployment automation using GitLab CI or GitHub Actions.
- Comfort with remote development on EC2 environments accessed through Tailscale VPN and SSH-based workflows.
- Experience with Socket.io, Redis, and BullMQ for real-time features and job processing.
- Ability to follow security hygiene practices including IP allowlists, secret scanning, and GitHub push protection.
- Nice-to-have experience building or integrating MCP servers and tools, integrating LLM APIs, optimizing prompts and tokens, serverless and microservices integration, or healthcare, veterinary, and scheduling-heavy applications.
Tech Stack
AWSGitHub ActionsGitLab CI/CDGoogle BigQueryGoogle Cloud PlatformJavaScriptNestJSNext.jsRedisTypeScript
Categories
About TechBiz Global GmbH
TechBiz Global GmbH provides IT recruitment, outstaffing, and custom software development for startups and enterprises, plus consulting around product building and scaling. The privately held company is headquartered in Berlin and was founded in 2021. It staffs engineering roles for clients and delivers outsourced development teams, supporting engagements across multiple countries.