Senior Tech Lead: Hands-On Backend & Cloud Architect

Thermosphr EO Solutions GmbH; Paris; Hybrid; EUR 120,000 - 180,000; Full time

Job summary

Thermosphr EO Solutions GmbH in Central Paris is seeking a senior software engineering lead who will own architecture and software development across the full cycle, while staying hands-on. You will manage real-time data flow between buildings and the cloud and reduce technical debt.

You will translate business priorities into technical work, contribute to product direction, and grow the team, mentoring two senior engineers and collaborating with leadership.

Qualifications

• Fluency in English (C1/C2).
• Advanced programming: Python 3.12+, JavaScript/TypeScript.
• Product judgment: differentiate requests vs. requirements.

Responsibilities

• Build 60%: backend, cloud infra, architecture ownership, real-time data flow, debt reduction.
• Lead 40%: translate priorities into technical work, contribute to product direction, grow the team.

Skills

English fluency

Python

JavaScript/TypeScript

Product judgment

Backend leadership

Front-end capable

Clear communication

Cloud experience

AI-assisted coding

Production reliability

Entrepreneurial mindset

Tools

GCP

AWS/Azure

Job description

Thermosphr EO Solutions GmbH in Central Paris is seeking a senior software engineering lead who will own architecture and software development across the full cycle, while staying hands-on. You will manage real-time data flow between buildings and the cloud and reduce technical debt.

You will translate business priorities into technical work, contribute to product direction, and grow the team, mentoring two senior engineers and collaborating with leadership.