Hybrid Full-Stack Engineer – Workflow Automation Platform

at peopleIX

• Job title: Full-Stack Engineer – Workflow Automation Platform
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: €65,000 - €80,000 per year
• Degree requirement: Bachelor's Degree
• Tech skills: JavaScript, Next.js, Node.js, Postgres, React, SQL, TypeScript
• Location requirements: Hybrid, Cologne, Germany

About the role

• Full-Stack Engineer developing the Workflow Automation Platform at peopleIX. Building AI-driven automations and collaborating with teams in a hybrid work environment in Cologne, Germany.

Responsibilities

• Build the Workflow Automation Engine
• Architect and develop our core workflow automation platform
• Create HR-specific workflow templates: time-based triggers, analytical thresholds, event-driven processes (onboarding, offboarding, leave management), and webhook integrations
• Build our natural language workflow builder, enabling HR teams to create automations through plain text prompts
• Own complete features end-to-end, from database schema to API to polished UI – at peopleIX, full-stack means genuine ownership of the entire feature lifecycle
• Develop our scalable integration framework connecting Slack, Teams, email, and core HR systems (Personio, DATEV, SAP)
• Shape our People Data Platform: robust data modeling, custom fields, and data quality monitoring
• Extend our proprietary AI agent Tira with automation capabilities, moving from insights to autonomous actions
• Build intelligent triggers and AI-powered recommendations that drive real workflow execution
• Pioneer agentic experiences that redefine how HR teams interact with their data
• Partner directly with our CTO and cross-functional teams to ship features rapidly
• Work closely with customers to iterate based on real-world feedback
• Take full accountability from concept through deployment and production monitoring
• Play a foundational role in defining our technical standards, team dynamics, and development practices
• Influence architecture decisions and product direction as we scale further
• Help build a world-class engineering organization from the ground up

Requirements

• 3+ years of proven excellence in Frontend: Expert-level React and TypeScript; you write clean, performant, maintainable code
• 3+ years of proven excellence in Backend: Deep experience building robust APIs with Node.js
• Strong SQL skills (PostgreSQL preferred); you understand query optimization and data modeling
• Experience building or working with automation platforms, event-driven architectures, or integration frameworks
• Demonstrated track record of shipping high-quality, user-facing features in production
• You operate autonomously, move fast, and take full responsibility for outcomes in high-trust environments
• Strong preference for: Experience with tRPC, Prisma, or similar type-safe APIs and ORMs
• T3 Stack experience (Next.js, Tailwind CSS, tRPC, Prisma)
• Building AI-powered or agentic product experiences
• Startup experience with demonstrated impact in B2B SaaS product development
• Proficiency with AI-assisted development (Cursor, Copilot, or AI coding agents)

Benefits

• Real equity, real upside – competitive compensation including meaningful stock options
• Maximum impact – flat hierarchies, genuine ownership, and direct influence on product direction from day one
• Modern setup – office in the heart of Cologne with flexible hours and hybrid work
• Growth investment – dedicated learning & development budget plus Urban Sports Club membership
• Team culture – regular offsites with a team that moves fast and builds together