About this role What we're looking for?

We’re looking for a senior, technically strong Support Engineer who has supported B2B software in fast-growing startups and can own complex customer issues end-to-end — from debugging integrations to driving product improvements. Experience experimenting with AI/LLM tooling is a plus.

What you'll do:

Troubleshooting & Debugging: Investigate API integrations, data-sync issues, authentication flows (OAuth, API keys), and provider-specific edge cases.

Customer Guidance: Assist customer engineers via Slack, email & occasional video calls — clear, concise, and technical.

Internal Collaboration: Work closely with Product & Engineering to escalate bugs, relay feedback, and shape fix priorities.

Knowledge Building: Create and maintain internal / external docs and guides based on recurring topics.

Process Improvement: Set up better tooling, automation, and reporting to scale our support capabilities.

3 - 8 years of experience in full stack engineering or technical support for B2B software. Equity Equity grants are offered in addition to the base salary. Visa sponsorship available We can help with relocation for candidates within the European Union, but we do not sponsor visas for candidates outside of the EU. On-site work policy Full-time position Location Berlin, Germany Tech stack TypeScript, Node.js, React, PostgreSQL, LangChain

About Kombo Kombo is the unified API for HR, payroll, Assessment, LMS and recruiting systems. Instead of spending months building integrations one by one, companies integrate once with Kombo and connect to 120+ platforms instantly.

Since Y Combinator (S22), we've grown to 8-figures in revenue, 50+ team members, and raised $25M+ from YC, Volition Capital, and Acadian Ventures. We're tripling the team and revenue next year.

How We Work

Ownership end-to-end. A customer isn't "handed off" when the contract is signed - you own the relationship from first technical call through successful go-live and beyond. Problems that surface in implementation are your problems to solve, not someone else's.

Written thinking. We use long-form documents to make decisions and share context. You'll write implementation plans, technical briefs, and customer-facing documentation that help the whole team move faster. If you prefer talking through everything in meetings, this isn't the right fit.

High-performance, high-support. We're a small team of people who are exceptional at what they do. Ex-founders, and operators who've built at scale before. We hold a high bar and give you the autonomy to meet it. We also celebrate wins together (roughly once a week for big releases, closings, or milestones).

Bias Towards Action, and high agency: We are building - if we need a resource, we create it. If a process needs improvement, we refine it. We take the initiative and ownership on everything we own, and don’t wait for permission.

In-person by default. We believe the best work happens together. This role is on-site in Berlin 4+ days per week.

About Career Vault Talent

Career Vault Talent is a modern agency designed for the startup era. We help top engineers land roles at early-stage startups that are backed by Tier 1 VCs.