Lead Developer – Startup OSS Ventures

TL;DR

• Position also known as: Lead Developer / Engineering Lead / Tech Lead

• Location: Paris 10 - 1 day remote per week

• Salary range: €60K–80K + BSPCE

• Contract: CDI, full-time

• Reporting to: Cofounders

• Start date: ASAP

We are building a fast-growing startup backed by OSS Ventures. Our mission: solve complex problems by combining technology, scalability, and impact.
You’ll report directly to the cofounders and work closely with product, data, and operations.

Why we need you

What you will do

• Be both hands-on (coding, architecture) and managerial (leading and coaching developers)
  
  

• Own the technical vision of the product
  
  

• Build, structure, and grow the engineering team
  
  

• Ensure robustness, scalability, and code quality
  
  

• Translate business needs into technical solutions with the product team
  
  

• Implement best practices (CI/CD, testing, monitoring, code reviews)
  
  

• Anticipate critical issues (scalability, performance, security)
  
  

• Collaborate cross-functionally (product, data, ops) for alignment and delivery
  
  

In a nutshell
You’ll be the technical backbone of the startup: bridging product vision with engineering execution, guiding the team toward healthy architecture, and scaling the product from prototype to maturity.

Your profile to make this a success

1. Mandatory skills

• 5–7 years experience in software development / engineering

• 3+ years in a lead / tech lead role with management responsibilities

• Strong command of modern stack (Node.js / Python / TypeScript / React / APIs / microservices)

• Experience with scalable architectures, APIs, databases, distributed systems

• Solid practices: testing, CI/CD, monitoring, security

• Ability to balance startup speed with technical rigor

2. Nice to have (can be learned on the job)

• Knowledge of supply chain / logistics / optimization contexts

• Topics around sustainability and impact

• Sector-specific internal tools

Expected behaviors

• Proactivity & curiosity

• Humility & pedagogy

• Ownership & accountability

• Being a driving force for innovation and structure

• Clear communication, ability to simplify complex topics

What success looks like

• Delivery of key features with minimal bugs

• Stable, scalable, maintainable architecture

• A growing, autonomous engineering team

• Technical roadmap delivered on time

• Few critical incidents, fast response times

Career path

Lead Developer → Head of Engineering → CTO

Working conditions

• Hybrid setup: Paris 10 + 1 remote day / week

• CDI, full-time

• €60K–80K + BSPCE

• Tools & training budget

• Startup environment: high impact, freedom, responsibility