Full-Stack Software Engineer

Mercor; Deutschland; Remote; EUR 98,000 - 148,000; Part time

Job summary

Mercor connects elite creative and technical talent with leading AI research labs in a remote setup. The Software Engineer (Contract) will ship features across backend and frontend, design scalable integrations, and build real-time analytics experiences.

The role emphasizes an MVP-focused approach with strong engineering hygiene and rapid iteration. The candidate should be comfortable with MCP-style tool interfaces and using AI tools to boost productivity without sacrificing correctness, while

Qualifications

• Proven ability to ship features end-to-end in SaaS environments.
• Experience building SaaS products with APIs and data models.
• Strong understanding of integrations (OAuth2, webhooks, pagination).
• Ability to leverage AI tools while maintaining correctness.

Responsibilities

• Ship production features across backend and frontend.
• Design and implement a scalable integrations framework.
• Build real-time analytics experiences.
• Architect an agentic tool-use layer compatible with MCP-style patterns.
• Set up strong engineering hygiene: testing, observability, and on-call readiness.
• Iterate quickly and pragmatically.

Skills

End-to-end shipping

APIs & data models

OAuth2 & webhooks

AI tool usage

MCP-style interfaces

Stakeholder communication

Production constraints

Job description

About The JobMercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey.

Position: Software EngineerType: ContractCompensation: $80–$120/hourLocation: Remote

Role Responsibilities

• Ship production features across backend and frontend.
• Design and implement a scalable integrations framework.
• Build real-time analytics experiences.
• Architect an agentic tool-use layer compatible with MCP-style patterns.
• Set up strong engineering hygiene: testing, observability, and on-call readiness for the pilot.
• Iterate quickly and pragmatically.

Qualifications

• Strong, practical software engineering skills; ability to ship end-to-end and unblock yourself.
• Experience building SaaS products with APIs, data models, and production constraints.
• Deep comfort with integrations (OAuth2, webhooks, API pagination, rate limiting, sync semantics).
• \"Vibe coding\" mindset: effective use of AI tools (Copilot, ChatGPT, etc.) without sacrificing correctness.
• Familiarity with MCP-style tool interfaces and/or building tool servers.
• Clear communicator who can explain tradeoffs and keep stakeholders aligned.