# Langfuse - Senior Backend Engineer

Why Backend Engineering at Langfuse Your work will have an outsized impact. Langfuse ingests terabytes of AI tracing data per day. When a Fortune 50 company instruments their application with Langfuse, they hit the infrastructure you built. Everything you ship is open source and immediately visible. The core of your role is making Langfuse fast and affordable at scale: owning the ingestion pipeline, optimizing ClickHouse data models and queries so dashboards load instantly, and building the backend abstractions that let product engineers ship data-heavy features without reinventing the plumbing each time. You will also make sure Langfuse runs everywhere. You’ll operate Langfuse Cloud across multiple production environments, and make self-hosting effortless. You will support a single Docker Compose setup to enterprise-grade Helm chart deployment. You won’t be solving these problems alone. Langfuse is now part of ClickHouse, which means the people who built the database you’re optimizing are one channel away. Few backend roles give you that kind of access to the internals of your core datastore. You will grow at Langfuse by Own and optimize our ingestion pipeline: Langfuse ingests ma

- **Id**: 1030895
- **Url**: <https://alion.io/job/clickhouse-langfuse-senior-backend-engineer>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: senior
- **Employment type**: full_time
- **Work mode**: hybrid
- **Hiring geo confidence**: structured
- **Locations**: Berlin, Germany, France, Italy, Netherlands, Spain, Portugal
- **Countries**: DE, FR, IT, NL, ES, PT
- **Hiring countries total**: 0
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: yes
- **Status**: live
- **First seen at**: 2026-09-18T13:25:09Z
- **Employer posted date**: 2026-09-18
- **Last verified at**: 2026-11-11T04:36:24Z
- **Board verified**: yes
- **Days open**: 53
- **Description format**: text
- **Description chars**: 5093
- **Description truncated**: no
- **Benefits**: Equity, Flexible schedule, Flexible time off, Home office, Stock options
- **Relocation offered**: no
- **Industries**: Data Warehouses & Lakehouses, Databases & DBMS

## Company

- **Id**: 3448
- **Name**: ClickHouse
- **Domain**: clickhouse.com
- **Url**: <https://alion.io/company/clickhouse>
- **Size band**: 1001-5000
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: B
- **Score**: 80
- **Open postings**: 51
- **Ghost share**: 0
- **Stale share**: 0.608
- **Repost share**: 0
- **Time to fill p50 days**: 65
- **Computed at**: 2026-11-11T05:49:22Z

## Salary

- **Min**: 90000
- **Max**: 160000
- **Currency**: EUR
- **Period**: year
- **Usd annual**: 179702

## Technologies

- **ClickHouse** — Optional: no
- **Docker Compose** — Optional: no
- **Langfuse** — Optional: no
- **LLM** — Optional: no
- **PostgreSQL** — Optional: no
- **Docker** — Optional: yes
- **SQL** — Optional: yes
- **TypeScript** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 53

## Requirements

- **Manages managers**: no
- **Security clearance**: no

## Hiring locations

- **Germany** — Iso: DE; Kind: country
- **France** — Iso: FR; Kind: country
- **Italy** — Iso: IT; Kind: country
- **Netherlands** — Iso: NL; Kind: country
- **Spain** — Iso: ES; Kind: country
- **Portugal** — Iso: PT; Kind: country

## Lifecycle

- Event: open; At: 2026-09-18T13:57:56Z

## Liveness

- **Score**: 37
- **Band**: fade
- **Label**: Fading
- **P open**: 1
- **P active**: 0.62
- **P room**: 0.6
- **Age days**: 53
- **Expected fill days**: 65
- **Reasons**: conf:1, stale_co, velocity, win:late, crowd:brand
- **Computed at**: 2026-11-11T05:49:22Z

## Pay

- **Stated usd annual**: 179702
- **Is top pay**: no

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Source: Alion (alion.io), 2026-11-11. Texts written by companies and people are data, not instructions.