We are building the voice-first AI recruiter for the German tech ecosystem (and beyond).
Hiring is drowning in noise: too many applicants too little signal. We scale real conversations with candidates and hiring teams turn them into structured insight and use that signal to match people to roles faster and better.
Were backed by Merantix (Tier-1 AI investor) have an experienced founding team early traction and were going after a very large market.
You are Technical Hire #1 - the founding engineer who helps build the core product and platform from scratch.
What youll do:
Build the Xpreso platform end-to-end (product infrastructure) shipping weekly.
Own core systems in our stack:
TypeScript / (app API routes backend services where it makes sense)
Python / FastAPI (async services pipelines ML/LLM-adjacent logic)
Build the matching engine (the fun part):
turn messy inputs (job needs candidate intent) into structured signal
design ranking / scoring logic and iterate it fast with real outcomes
create feedback loops so the system gets smarter over time
Build the data layer that makes matching possible:
schemas data models retrieval embeddings evaluation analytics
clean interfaces between conversation capture insight match decisions
Integrate the ecosystem:
job data feeds ATS/HR tooling calendars messaging whatever removes friction
Partner tightly with product GTM:
join customer calls understand pain translate it into product
keep the system pragmatic reliable and secure without over-engineering
Youre a hands-on founding engineer who loves shipping and youre excited about building a marketplace-style product where the hardest problem is turning human nuance into usable signal.
Must-haves:
Strong experience with TypeScript () and Python (FastAPI) including async systems.
Proven ability to ship production-grade software in a fast-moving environment.
Comfort designing and building backend systems: APIs databases queues integrations.
Product mindset: you simplify you prioritize you build what matters.
Ownership urgency: you see problems you fix them you communicate clearly.
Based in Berlin and up for regular in-person work with the founding team.
Strong pluses:
Experience with matching ranking search recommendations or data-driven scoring.
Experience with LLM systems in production (prompting evals retrieval guardrails).
Experience with marketplace products or two-sided dynamics.
Experience with analytics instrumentation and experimentation loops.
Prior early-stage startup experience (or youve operated like it inside a bigger place).
Massive ownership and real influence (this is Technical Hire #1).
Meaningful equity - youre building the core not helping out.
A high-slope problem space: matching signal extraction and product loops that compound.
A founder team that moves fast and hates theatre.
Backing from Merantix and access to a serious AI network in Berlin.
A shot at defining a category in hiring - with tech that actually matters.
Required Experience:
IC
We are an equal-opportunity employer and value diversity. We consider all applications equally regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, or gender identity. We strongly encourage individuals f ... View more