Deputy CTO

TL;DR

• Position also known as (or close to): Deputy CTO / VP Engineering / Engineering Director

• Location(s): Paris, France (Hybrid – 2/3 days a week in-office minimum)

• Salary range: 100K + BSPCE

• Type of Contract: Full-time, permanent (CDI)

• Direct reporting line: Quentin Dubois, CTO of OSS Ventures

• Start date: As soon as possible

Our Ambition

OSS Ventures builds and scales industrial B2B SaaS startups from scratch. Our goal is simple: reinvent the future of operations with world-class technology companies.

Our Mission

We empower founders to solve the toughest challenges in manufacturing, logistics, energy, and beyond.

Our Story

Since 2019, we have created 20+ ventures, raised over €100M, and brought together an ecosystem of passionate builders. OSS Ventures is both a startup studio and a VC fund: we don’t just invest, we co-create.

Our Values

• Trusting team excellence

• Fail, learn, succeed

• We eat what we kill

• Compound the system

• Build something the world needs

• Think and do it quick

Why we need you

What you will do

You’ll be the right hand of the CTO, taking on both strategy and execution. Your mission: ensure our engineering vision turns into a scalable, reliable, and innovative B2B platform ecosystem.

In a nutshell

• Translate business goals into a robust tech roadmap

• Build and lead engineering teams

• Champion technical excellence and execution speed

• Leverage AI and data to create value

Broadly speaking

You’ll set standards for our engineering practices, guide architectural decisions, and ensure our ventures move fast without breaking. You’ll also mentor technical leaders across startups and help founders structure their early engineering teams.

On a day-to-day basis

• Recruit our Founders (CTO)

• Manage full product development lifecycle

• Provide hands-on guidance on architecture and code when needed

• Support and coach engineers and tech leads

• Collaborate with business leaders to align tech with strategy

• Drive AI and data adoption across ventures

Who you’ll be working with

• The CTO (direct report & sparring partner)

• Engineering teams across multiple ventures

• Founders & business leaders

• Product Managers, Designers, Developers

• OSS Ventures partners (business, operations,HR, fundraising)

What’s next in your career path ?

This role prepares you to grow into a CTO role of a fast-scaling startup, or a Partner role at OSS Ventures where you’ll drive the next generation of industrial SaaS companies.

Your profile to make this a success

1. Mandatory required skills

1. Proven Builder: 8+ years of software development, including experience as Lead Dev / VP Eng. Startup founder background is a plus.

2. Leadership: At least 3 years managing engineering teams of 10+ people, with mentoring responsibilities.

3. AI & Data Acumen: Strong track record applying AI / data science to real-world business cases.

4. Startup Operator: Experience building structure & process in early-stage environments.

5. Business Acumen: Ability to align tech with commercial goals and communicate effectively with non-technical stakeholders.

6. Language skills: Fluent in English, comfortable in French.

2. This will be important in your job, we’ll teach what you currently miss

• OSS Ventures’ unique startup studio model

• Specificities of industrial B2B SaaS go-to-market

We kindly advise you to think twice before applying if…

• You are not location-flexible (Paris-based or willing to relocate)

• You are not an entrepreneurial profile

• You are not looking for a positively challenging job

• You are not fully comfortable working in French and English

Overall Expected Behaviors

• High ownership & autonomy

• Hands-on builder mindset

• Collaborative leadership

• Pragmatic problem-solving

What success looks like

• A high-performing engineering team delivering with speed and quality

• AI & data deeply embedded into products

• Clear and scalable tech processes established

• Founders and tech leaders coached to autonomy

Career path

Deputy CTO → CTO (venture or OSS-level) → Partner OSS Ventures