Senior Product Engineer

The role

You will own features from problem to shipped product in a platform used by construction professionals. You will design data models, APIs, and services, and build interfaces using a design system.

What you will do

• Take customer or business problems to production
• Shape solutions and acceptance criteria
• Design data models and services
• Ship across backend, API, and front end
• Design APIs and services for complex domain data
• Decide how solutions work for the user
• Build interfaces on the design system
• Partner with Product and Design on strategic initiatives
• Collaborate with Product, Design, and Data teams
• Architect and implement modular packages and services in a monorepo

Required qualifications

• Significant professional experience building, shipping, and maintaining complex web applications with TypeScript, React, and Node
• Experience taking features from loosely defined problems to real users
• Experience designing data models, APIs, and services
• Excellent communication skills in English

Nice to have

• Experience shipping AI-powered features (LLMs, agents)
• Experience with AWS, Kubernetes, Terraform, and CI/CD pipelines

Benefits

• Competitive salary above the market average
• 100% remote or office in Berlin
• Flexible working hours
• New MacBook Pro
• Regular company off-sites and team events
• Permanent contract

About the company

Cosuno is a fast-growing tech startup making the construction industry more efficient and transparent with a digital platform for tenders and procurement processes.