Job
- Level
- Experienced
- Job Field
- Web, Full Stack, Back End
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Salary
- 5.000 to 5.800€ Gross/Month
- Location
- Karlsruhe
- Working Model
- Hybrid, Onsite
Job Summary
In this role, you will develop end-to-end features across product lines, work with Next.js, APIs, and PostgreSQL, and enhance the platform with new persona plugins and tools for AI agents.
Job Technologies
Your role in the team
- As a Full Stack Software Engineer, you will work across our five products: Console (requirements and document SaaS), Swarm (multi-agent orchestration daemon), Hive (control plane), Stack (AI-native CI/CD), and Billing Gateway.
- You build features that are used by both humans and AI agents — working side by side with our own agents.
- Building End-to-End Features: Next.js 16 / React (shadcn/ui, Nopex Design System) Fastify / NestJS APIs PostgreSQL (Drizzle) Redis/BullMQ.
- Design product interfaces that are used by both humans and AI agents - REST APIs with Zod, MCP tools, SSE/WebSocket streams.
- Expand Swarm: new Persona Plugins, Tools, Workspace Driver, or Transport Adapter.
- Platform Infrastructure: Pipelines in Stack, Deployment Driver in Hive, Webhook Flows in Billing Gateway.
- Product responsibility: Sentry instrumentation, Playwright/Vitest coverage, K8s manifests, on-call duty if necessary.
- Work side by side with our AI agents - review Swarm PRs as often as you write them yourself.
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Our expectations of you
Qualifications
- Solid Next.js / React skills and at least one Node backend framework (Fastify or Nest).
- Routine with PostgreSQL, an ORM (Drizzle/Prisma), and Redis-based queues.
- Basic understanding of Docker and Kubernetes - not SRE level, but "kubectl describe" doesn't scare you.
- Clear opinions on API design, type safety, and where validation belongs.
- Pragmatic attitude towards AI tooling - neither hype-driven nor allergic.
- Monorepo tooling (pnpm Workspaces, Turbo).
- Drizzle migrations, Zod-first API contracts, OpenAPI 3.1.
- Observability depth of knowledge (Sentry, OTel, Trace-UIs).
Experience
- Over 4 years of hands-on experience with TypeScript in both frontend and backend development.
- Desirable: LLM/Agent experience (Anthropic, OpenAI, MCP, Prompt-Caching, Tool-Use Protocols).
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What we offer
- A platform where your code is augmented by an army of agents.
- Small, senior team - few meetings, lots of write access, decisions within days.
- Modern stack without legacy: TS strict, Drizzle, Fastify, Next 16, K8s-native.
- Office in Karlsruhe with the option for home office on selected days.
- 30 days of vacation, top equipment.
- Conferences & Events - we want to keep you connected.
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Benefits
Work-Life-Integration
Topics that you deal with on the job
Job Locations
This is your employer
Nopex GmbH
Nopex GmbH operates as a platform for AI-native software delivery and positions itself as an 'Agentic Software Agency'. The company transforms requirements into productive systems, with specialized AI agents handling planning, development, testing, review, deployment, and operation.
Description
- Company Type
- Startup
- Working Model
- Hybrid, Onsite
- Industry
- Internet, IT, Telecommunication
Full Stack Software Engineer
- Salary
- 5.000 to 5.800€ Gross/Month
- Location
- Karlsruhe
- Working Model
- Hybrid, Onsite
- Diversity
- Open for all genders
