Senior Product Engineer

Senior Product Engineer @Kombo

📍 Berlin (On-site) · Full-time

TL;DR

Kombo (YC S22) is building a unified API that saves engineering teams, on average, hundreds of hours by needing to integrate only one API instead of 50+. We’re looking for a product-minded full-stack engineer to potentially own one of our existing or new product verticals and to build features for our rapidly growing customer base. This is a Berlin-based onsite role (4+ days/week).

About Kombo

Kombo is building the unified API for HR, payroll, and recruiting systems. Instead of companies spending months integrating with dozens of different systems, they can integrate once with Kombo and instantly connect to over hundred platforms. We abstract away the complexity of handling different data schemas, authentication methods, and API quirks.

Since going through Y Combinator in 2022, we

Raised $30M+ of funding from Y Combinator, Acadian Ventures, 486 and other investors

Grew from 0→ $10M+ ARR and hundreds of customers (growth-wise among the ~top-5% of VC-backed startups)

Scaled to process data for the equivalent of 10% of Germany's workforce

Grew to a team of 50+ team members (pictures!) in 2x offices

• Kombo is an international company by default. We operate across two main hubs (NYC 🇺🇸 and Berlin 🇩🇪) and work with a globally distributed team representing 20+ nationalities.
• What You'll Be Working On
• As a Senior Product Engineer, you’ll take full ownership of major product areas — architecting our product, working closely with customers , and shipping high-impact features end-to-end.

Projects you would have worked on in the past

Building and iterating on a ‘filtering’ layer that allows customers to filter the employees being sent to us after discovering that building this in-house is the #1 blocker for their implementation

(De)-validating a LLM-based approach to building integrations more efficiently in a few-week PoC

Allowing customers to receive real-time data by extending our integration framework & infrastructure to handle millions of webhooks per day

• Stack: TypeScript (required), Node.js, React, PostgreSQL, GCP, Docker, Prisma.
• You don’t need to know everything — we value strong fundamentals and learning velocity.
• The Challenge
• You're joining at a critical time. We've proven strong product-market fit and our biggest problem is keeping up with customer demand. This means:

You'll build features that customers actively request and start using the same day - we often get "when can we have this?" messages within hours of releasing new features

Identify and solve problems without bureaucracy — we release 20 + times per day and move fast

Operate in a high-growth environment (2–3× per year) that feels like a new company every few months

Who We're Looking For

We hire entrepreneurial engineers who want to move fast and maintain a high bar for quality.

On a high level, we are looking for entrepreneurial people that are at the top-of-their-game. People at Kombo come from Harvard, Oxford, Stanford, CODE etc., 50% are ex-founders themselves and in general have always done hard, impressive things. Specifically for this role, we are looking for the following skills:

Expertise in designing B2B Software applications

Ideally 5-8+ years of software development experience

Proficiency or capacity to learn our tech stack: Node.js, React, Postgres, Prisma, TypeScript

Enthusiastic and collaborative work attitude

Previous experience leading a team is a plus!

Previous founding experience is a plus!

This role is perfect for an experienced engineer looking to join a company that has already proven product-market fit but is still in its early days. You are likely a great fit, if:

You thrive when you have autonomy, own as many of the details as possible, and project manage your own work

You have strong engineering fundamentals, code efficiently, and you know what you're great at and what you're less great at

You dislike meetings and would much ra