Senior Full Stack Engineer (AI-Native Platform)

SureIn; Berlin; Vor Ort; EUR 70.000 - 90.000; Vollzeit

Zusammenfassung

A tech startup in Berlin is seeking a Senior Full Stack Engineer to build AI-native features with strong ownership. Responsibilities include developing end-to-end functionalities using React and Node.js, enhancing user experiences, and integrating complex workflows. Ideal candidates should have expert knowledge in TypeScript, proficiency in backend services, and an understanding of databases. This role offers significant influence over architecture and UI/UX design, as well as the chance to work on groundbreaking products.

Qualifikationen

• Expert-level proficiency in TypeScript.
• Strong skills in React including hooks and state management.
• Experience with Node.js and backend development.
• Familiarity with databases like PostgreSQL.
• Ability to integrate APIs and work with data-heavy applications.

Aufgaben

• Build end-to-end features using React and Node.js.
• Translate complex workflows into intuitive user interfaces.
• Collaborate closely with AI engineers on product integration.
• Implement robust API integrations along with state management.

Kenntnisse

TypeScript

React

Node.js

PostgreSQL

API integration

AWS

DevOps basics

Jobbeschreibung

Voices from your team

Your mission

Full Stack Feature Ownership

• Build end-to-end features acrossReact (frontend)andNode.js / TypeScript (backend)
• Translate complex technical workflows into clean, intuitive UIs
• Collaborate closely with backend, AI engineering, product, and design
• Implement robust API integrations, state management, and data flows

Frontend Engineering

• Develop reusable components, layouts, and UI patterns
• Optimize for performance, clarity, and usability
• Maintain design consistency and elevate product polish

Backend Engineering

• Implement and maintain backend routes, business logic, and services
• Work with PostgreSQL for data modeling and queries
• Contribute to distributed system patterns, event-driven flows, and reliability

AI-Enabled Product Work

• Integrate frontend experiences with AI-derived outputs (structured data, workflows, insights)
• Collaborate with AI engineers to ensure clarity and usability of model outputs

Engineering Best Practices

• Write high-quality, maintainable code
• Contribute to code reviews, technical discussions, and architectural decisions
• Support performance, observability, and CI/CD improvements

Your profile

Technical Skills

• Expert-level TypeScript
• Strong proficiency with React (hooks, component design, state management)
• Backend experience using Node.js + TypeScript
• Solid understanding of databases (PostgreSQL)
• Experience integrating APIs and working with data-heavy UIs
• Familiarity with AWS, DevOps basics, and performance optimization
• Interest or experience with AI-enabled products (LLMs, embeddings, model outputs)

Mindset & Culture Fit

• Bias for action — ships iteratively and improves continuously
• Builder mentality — enjoys solving open-ended problems
• Low ego — collaborative and pragmatic
• Strong communicator — can explain trade-offs clearly
• Ownership mindset — takes responsibility from spec → implementation → polish → release

Why SureIn?

SureIn is building an AI-native operating system that transforms unstructured communication and data into structured, automated workflows. We are Sequoia Arc alumni, backed by top-tier investors, and now expanding our engineering team to deliver high-quality, user-facing features on top of a fast-evolving backend and AI stack.

We are hiring a Senior Full Stack Engineer who can work across backend services and frontend interfaces to deliver end-to-end features with strong ownership. This is a hands‑on IC role with significant influence on architecture, UI/UX patterns, and overall product quality.

The ideal candidate is strong in Node.js, TypeScript, React, understands modern system design, and enjoys turning complex backend capabilities (including AI outputs) into simple, intuitive user experiences.