Job
- Level
- Experienced
- Location
- Berlin
- Working Model
- Onsite
- Job Field
- Data, Back End
- Employment Type
- Full Time
- Contract Type
- Permanent employment
Job Summary
In this role, you will develop scalable backend systems and APIs using Python and FastAPI, optimize AI features, and evaluate performance while collaborating closely with your team.
Job Technologies
Your role in the team
- Full end-to-end lifecycle of core backend infrastructure and applied AI capabilities across our platform.
- Architect and ship scalable backend systems, APIs, and data models using Python, FastAPI, and PostgreSQL.
- Build and optimize production applied AI features, including RAG pipelines, LLM chains, structured outputs, and tool-using agents.
- Establish evaluation workflows and performance benchmarks to monitor and improve AI latency, cost, and reliability.
- Strengthen platform observability, CI/CD pipelines, containerized deployments, and automated testing suites.
- Collaborate directly with users and product peers through technical design reviews, pragmatic iteration, and pair programming.
Our expectations of you
Qualifications
- Proven track record shipping reliable production backend systems in Python.
- Strong foundation in testing, CI/CD, observability, and containerized cloud environments.
- Pragmatic builder who communicates clearly in English (C1+) and enjoys technical collaboration.
- Authorized to work in Germany or the United Kingdom.
Experience
- Direct experience building applied LLM features like RAG, agents, and evaluation pipelines.
- Prior experience thriving in lean engineering teams (5-20 engineers) with high ownership.
What we offer
- Our company fosters a high-ownership, mission-driven, and low-ego environment focused on using AI for climate and sustainability impact.
- The team operates with trust, high autonomy, and direct collaboration (including pair programming and technical design reviews) within a fast-paced startup dynamic based in Berlin and London.
- Team members value pragmatic iteration, thoughtful debate, and continuous learning via quarterly hackathons and learning budgets.
Topics You Will Work On
Job Locations
About Your Employer
WhyBrilliant GmbH
WhyBrilliant GmbH is an innovative HR tech company based in Berlin, focusing on AI-driven career and recruiting processes. The platform connects job seekers and companies through conversational assistance, providing support for both sides. Founded in 2026, the company operates on a success-based placement model.
Description
- Company Type
- Startup
- Working Model
- Hybrid, Onsite
- Industry
- Recruitment Agency
Product Engineer
- Location
- Berlin
- Working Model
- Onsite
- Diversity
- Open for all genders
- English Only
- English only required
