Senior Fullstack Engineer

Confidential; United States; Remote; USD 79,000 - 124,000; Full time

Job summary

IllTip is seeking a senior fullstack engineer to own customer-facing features from discovery to production. You will contribute to an AI-driven voice and business communication platform and have a real voice in the product roadmap by working directly with users.

You will build the platform with TypeScript, React, Node.js and NestJS, run rapid experiments, and translate customer feedback into focused releases and measurable improvements.

Qualifications

• 5+ years of fullstack engineering experience delivering SaaS products.
• End-to-end frontend and backend feature delivery.
• Production experience with TypeScript, React and Node.js; NestJS a plus.
• Experience with customer discovery, rapid experiments and metrics-driven decisions.
• Comfortable with customers and cross-functional teams.
• Native German and fluent English; must live in Germany.
• Experience with LLM integrations or AI services is a plus.

Responsibilities

• Move features from concept through deployment and iteration.
• Build and evolve the platform using TypeScript, React, Node.js and NestJS.
• Talk with customers through support, feedback sessions and user testing to understand what they need.
• Split larger opportunities into focused releases that deliver customer value and refine them with feedback and metrics.
• Help set feature priorities and roadmap decisions for AI-powered voice services.
• Integrate AI capabilities into customer-facing applications while considering data protection and AI regulations.

Skills

TypeScript

React

Node.js

NestJS

SaaS

Customer discovery

Metrics-driven decisions

LLM integrations

German language

English language

Job description

A product engineering team at a software company building AI-driven voice and business communication tools is hiring a senior fullstack engineer. You will take ownership of customer-facing features from early discovery through production, and you will have a real voice in the product roadmap because the team works closely with its users. The role suits someone who enjoys both building and learning directly from customers.

Responsibilities

• Move features from concept and prototype through implementation, deployment and ongoing iteration.
• Build and evolve the platform using TypeScript, React, Node.js and NestJS.
• Talk with customers through support, feedback sessions and user testing to understand what they need.
• Split larger opportunities into focused releases that deliver customer value, then refine them using feedback and metrics.
• Help set feature priorities and roadmap decisions for AI-powered voice services.
• Integrate AI capabilities into customer-facing applications while considering relevant European data protection and AI regulations.

Requirements

• At least 5 years of fullstack engineering experience building and delivering SaaS products.
• Solid hands-on experience across frontend and backend, including shipping end-to-end web features.
• Production experience with TypeScript, React and Node.js; NestJS experience is a plus.
• Experience running customer-facing product discovery, rapid experiments and metric-driven decisions.
• Comfortable working directly with customers and business teams.
• Native German and fluent English. You must live and work from Germany.
• Experience with LLM integrations, AI services or fast-moving startups is a useful plus.

Applicants must be based in: Germany.