Senior Full Stack & AI Engineer (m/w/d)

Overfly; Berlin; Hybrid; EUR 70,000 - 120,000; Full time

Benefits offered by this job

Equity in products

4-day work week

Remote or hybrid

Autonomous, flat structure

Competitive compensation

Job summary

Overfly, a Berlin-based partner for Applied AI, is looking for a driven full-stack engineer to lead and build enterprise AI solutions. You will own end-to-end projects, from concept to production, using a modern stack (TypeScript, React, Node) and AI tools, while collaborating with designers, researchers and clients to deliver real impact.

The role offers real ownership, salary plus equity, and a flexible remote or hybrid work model with a 4-day work week and autonomous, flat team structure.

Qualifications

• 3–5+ years of experience in full-stack development (React, Node, TypeScript).
• Experience taking the technical lead on at least one major project.
• Entrepreneurial mindset; turning ideas into working products.
• Comfort with ambiguity and ability to work independently.
• Great communication skills and collaborative spirit.

Responsibilities

• Lead projects from concept through production-ready apps.
• Choose and evaluate tech stack for each project.
• Build front-end and back-end solutions with TypeScript (React, Node, Tailwind).
• Integrate AI solutions using LangChain, OpenAI, Vertex AI, and Azure AI.
• Set up analytics and event-tracking (Mixpanel, PostHog).
• Validate technologies through practical testing.
• Collaborate with designers, researchers, and users to build useful products.
• Communicate with clients and clarify goals.

Skills

Full-stack development

React

Node.js

TypeScript

Entrepreneurial mindset

Independent work

Communication

Learning new tech

AI interest

Tools

LangChain

OpenAI API

Google Vertex AI

Azure AI

Mixpanel

PostHog

Supabase

PostgreSQL

Vercel

Job description

Join our small, hands-on team to create AI solutions in enterprise context and launch your own ideas at the same time. You’ll have real freedom, shape the tech, and share in the success (salary, earnings share and equity in products we launch). If you have a startup spirit, enjoy side projects, and want to see your work make a real impact, we'd love to connect.

About us

Join our small, hands-on team to create AI solutions in enterprise context and launch your own ideas at the same time. You’ll have real freedom, shape the tech, and share in the success (salary, earnings share and equity in products we launch). If you have a startup spirit, enjoy side projects, and want to see your work make a real impact, we'd love to connect.

About us

Overfly is a Berlin-based Partner for Applied AI. We're a team of engineers, product builders and strategists who help enterprises find high-impact AI use cases, then design and build them to production.

Tasks

What you'll be doing

• Leading projects from initial concept through to production-ready apps.
• Choosing and evaluating the best tech stack and tools for each project.
• Building front-end and back-end solutions primarily with TypeScript (React, Node, Tailwind).
• Integrating AI solutions using tools like LangChain, OpenAI, Google Vertex AI, and Azure AI.
• Setting up analytics and event-tracking (e.g., Mixpanel, PostHog).
• Validating technologies through practical, real-world testing.
• Collaborating closely with designers, researchers, and users to build truly useful products.
• Communicating directly with clients, asking insightful questions and clarifying goals.

Requirements

What you’ll bring

• 3–5+ years of experience in full-stack development (React, Node, TypeScript).
• Experience taking the technical lead on at least one major project.
• An entrepreneurial mindset, you enjoy turning ideas into working products.
• Comfort with ambiguity and an ability to work independently.
• Great communication skills and a collaborative spirit.
• A passion for learning and experimenting with new technologies.
• Big Bonus: previous experience or side projects involving AI.

Tech we use

Our current tools include:

• TypeScript (React, Node), Tailwind CSS, Next.JS, Vite, React, React Router
• AI frameworks and APIs (LangChain, OpenAI, Google Vertex AI, Azure AI)
• Analytics tools like Mixpanel and PostHog
• Databases like Supabase, Postgresql, Azure Cosmos DB
• Deployment platforms (Vercel, Google Cloud)

Benefits

What we offer

• Competitive salary plus annual bonus based on company performance.
• Real equity in the products we build together, with an option to invest further.
• Customizable perks (transportation pass, gym membership, rental bike), choose what fits your life.
• 4-day work week as team default
• Autonomous, self-managed work environment.
• Experienced, flat team structure, no corporate hierarchy here.
• Opportunity to build practical, valuable AI products used by real people.
• Remote or hybrid work model: 2 days/week at Delta Campus, the rest remote.