Backend Engineer – AI/ML

Reposted 14 Hours Ago
Be an Early Applicant
Berlin, DEU
In-Office
65K-100K Annually
Mid level
Artificial Intelligence • Information Technology • Natural Language Processing • Software
The Role
As a Backend Engineer, you'll design and scale backend systems for AI, transforming unstructured data into structured context, and develop high-performance retrieval systems.
Summary Generated by Built In

We’re building the independent context layer for AI – a missing piece of infrastructure that allows every AI process in a company to act on relevant and up-to-date context.
We’re a fast-moving, well-funded team based in Berlin, backed by HV Capital, Zero Prime and the founders of n8n, neo4j, Cognigy, make.com, Celonis and Nabla.

The Opportunity

In this role, you’ll design and scale the backend systems that power how a company’s “brain” functions – the logic that lets AI reason over live company knowledge instead of static data.

You’ll own the architecture behind our ingestion and retrieval layers, transforming unstructured information into structured, queryable context. Your work will directly define how AI systems across our customers’ organizations access relevant, up-to-date context in real time.

Qontext is already getting used by 10+ design partners and we are aiming to launch v1 of our platform in Q2 2026.

If you enjoy deep technical challenges, working from first principles, and shipping products that define a new category – this role is for you.


What You’ll Do
  • Design and implement the core backend logic of our AI context engine

  • Build and optimize our data ingestion pipeline – transforming raw tool data into structured knowledge graphs

  • Develop high-performance retrieval and ranking systems, combining vector search, rule-based logic, and entity recognition

  • Productize complex processes via APIs and modular components (MCP, SDK)

  • Create evaluation and experimentation frameworks to continuously improve performance and contextual accuracy


You’ll Thrive Here If You…
  • Love building distributed systems and tackling high-complexity logic problems

  • Are fluent in TypeScript or Python and have an eye for clean, scalable architecture

  • Enjoy turning research and theory into production-grade products

  • Have a bias for ownership, and thrive in fast-paced, early-stage environments

  • Are endlessly curious, pragmatic, and care about how AI can be made truly useful


Why Join Us
  • Challenge: Highly complex intellectual & logical challenge

  • Cutting Edge: Turning latest research into a product used by the masses

  • Mission: Build the foundational context infrastructure for AI processes

  • Impact: Shape the company and architecture from day one

  • Ownership: Competitive salary + meaningful early equity

  • Culture: Deep-tech mindset, transparency, radical candor and fast execution


Process
  1. Get to know each other – 30 min

  2. Technical interview – 30 min

  3. Technical take-home case – 3 h

  4. Case discussion – 45 min

  5. Offer


Practical Info
  • Location: Berlin

  • Start date: ASAP

  • Type: Full-time

  • Compensation: €65k - €100k + equity package

Skills Required

  • Fluent in TypeScript or Python
  • Experience with distributed systems
  • Ability to design scalable architecture
  • Experience in data ingestion and retrieval systems
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
5 Employees
Year Founded: 2025

What We Do

Qontext builds the foundational context infrastructure for AI processes, acting as the context layer for AI applications.

Similar Jobs

Celonis Logo Celonis

Senior Consultant

Big Data • Information Technology • Productivity • Software • Analytics • Business Intelligence • Consulting
Remote or Hybrid
Berlin, DEU
3000 Employees

Motorola Solutions Logo Motorola Solutions

Market Analysis Internship

Artificial Intelligence • Hardware • Information Technology • Security • Software • Cybersecurity • Big Data Analytics
Hybrid
Berlin, DEU
23000 Employees

Vercel Logo Vercel

Developer Success Engineer

Artificial Intelligence • Cloud • Software
Easy Apply
Remote or Hybrid
2 Locations

HERE Technologies Logo HERE Technologies

Lead Software Engineer

Artificial Intelligence • Automotive • Computer Vision • Information Technology • Internet of Things • Logistics • Software
Hybrid
Berlin, DEU
6000 Employees

Similar Companies Hiring

Golden Pet Brands Thumbnail
Digital Media • eCommerce • Information Technology • Marketing Tech • Pet • Retail • Social Media
El Segundo, California
178 Employees
Kepler  Thumbnail
Fintech • Software
New York, New York
6 Employees
Onshore Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
60 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account