
Siflet is a Full Data Stack Observability platform delivering actionable insights and helping organisations manage data quality monitoring at scale.

Siflet is a Full Data Stack Observability platform delivering actionable insights and helping organisations manage data quality monitoring at scale.
Founded: June 2021
Headquarters: Paris, France
Product: Data observability platform (monitoring, lineage, data quality, AI agents)
Recent funding: $18M announced June 19, 2025
Notable investors: EQT Ventures, Mangrove Capital Partners, Capmont Technology
Data observability and data quality for modern data stacks
2021
Software Development
€12.8M
$18M
Investors include EQT Ventures and Mangrove Capital Partners alongside Capmont Technology
“Backed by institutional venture investors including EQT Ventures and Mangrove Capital Partners, with Capmont Technology joining in 2025”
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About Sifflet
We are building the world’s best data observability platform to help companies excel at data-driven decision making.
Today, half of a data team’s time is spent troubleshooting data quality issues. Sifflet is putting an end to that. Our solution allows data engineers and data consumers to visualize how data flows between their services, define data quality checks, and quickly find the root cause of any data anomaly.
About the job
As a Staff Engineer, you will ensure that the technical foundations of our product enable us to deliver on our long-term ambitions, and help the team improve its practices.
You will report directly to Sifflet’s Head of Engineering, working across teams depending on where you can have the most impact at any given moment.
Your responsibilities will include:
Our engineering team currently includes between 15 and 20 engineers, split into four feature teams.
This is a challenging but rewarding role with significant impact on our product and engineering organization.
Our (current) stack
There are a few unique aspects to our stack:
Are we the company you’re looking for?
None of the people who joined Sifflet perfectly matched the described requirements for the role. If you’re interested in this position but don’t tick all the boxes above, feel free to apply anyway!
The entire process can be completed remotely; however, you’re more than welcome to visit our beautiful office in the heart of Paris.
Perks of joining us!
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Introduction Call (30min) – first call with Benoît (Head of Engineering)
Technical Interviews – Two in-depth assessments:
◦ Coding Interview (2hrs) – Evaluate your problem-solving and coding skills.
◦ System Design Interview (2hrs) – Assess your ability to design scalable and efficient systems.
Meet the Product team (30min)
Meet the Our CEO (30min) – Meet Salma (CEO) to gain insights into our vision, challenges, and ambitions.