Full Stack Developer - Sales Ops Team

EFFICIENT IP; La Garenne-Colombes; Sur place; EUR 65 000 - 95 000; Plein temps

Résumé du poste

EfficientIP is seeking a skilled Full Stack Developer to build AI-powered internal applications across Sales, HR, Marketing and Finance. You will work with the VP of Operations & Productivity to design, develop and deploy production-ready solutions that automate processes and speed up decision making.

You will integrate AI technologies, prototype ideas quickly and deploy on modern cloud infrastructure, collaborating with multiple business teams to translate needs into technical solutions.

Qualifications

• Ability to build internal AI-powered apps and automation.
• Experience structuring scalable web apps and data pipelines.
• Familiarity with AI model integration and workflow automation.
• Strong ownership mindset and ability to work with business stakeholders.
• Proven experience in end-to-end delivery of production-ready software.

Responsabilités

• Build intuitive, responsive web applications using modern front-end frameworks.
• Integrate Large Language Models into business workflows and applications.
• Design and develop AI assistants, AI agents and intelligent workflow automations.
• Build secure integrations with internal systems and third-party SaaS platforms.
• Develop workflow automations using APIs, webhooks and orchestration tools like n8n.
• Design and optimize data pipelines, SQL databases and reporting solutions.
• Build dashboards and internal tools to improve visibility and efficiency.
• Prototype ideas rapidly and evolve them into production-ready solutions.
• Deploy and operate applications in production using cloud infrastructure.
• Monitor usage and improve solutions based on feedback and impact.
• Evaluate new AI technologies and apply to business challenges.
• Collaborate with Sales, Marketing, Customer Success and IT to translate needs into solutions.
• Ensure code quality with testing, docs, version control, and CI/CD.
• Improve performance, scalability, security and maintainability.
• Stay updated with AI tech and engineering best practices.

Connaissances

Full stack development

AI integration

Frontend development

Backend development

Cloud computing

REST API design

CI/CD

Data workflows

Team collaboration

Rapid prototyping

Outils

FastAPI

Flask

Django

PostgreSQL

MySQL

NoSQL

GitLab

n8n

Google Cloud Platform

Docker

React

Next.js

Description du poste

As part of our AI transformation journey, we are building a new generation of internal business applications and AI-powered solutions that will dramatically improve productivity across different divisions such as Sales, HR, Marketing, Customer Success, Renewals, Finance, Operations, etc..

To support this strategy, we are looking for a highly talented Full Stack Developer who enjoys building innovative applications, integrating AI technologies and turning business ideas into production-ready solutions.

As a Full Stack Developer, you will work directly with the VP of Operations & Productivity and business stakeholders across the company to design, build and deploy internal applications that automate business processes and accelerate business execution.

As Unlike traditional software engineers who primarily build customer-facing products, you will develop strategic internal platforms, AI assistants, business applications and automation solutions that transform how EfficientIP operates.

You will combine software engineering, AI integration and rapid prototyping to deliver impactful solutions in a fast-moving environment.

We are looking for builders – People who love taking an idea on Monday and putting a working application in users’ hands by Friday.

Key Responsibilities

• Build intuitive, responsive web applications using modern front-end frameworks.

• Integrate Large Language Models into business workflows and applications.

• Design and develop AI assistants, AI agents and intelligent workflow automations.

• Build secure integrations with internal systems and third-party SaaS platforms, including CRM, ERP, Google Workspace and other business applications.

• Develop workflow automations using APIs, webhooks and orchestration platforms such as n8n.

• Design and optimize data pipelines, SQL databases and business reporting solutions.

• Build dashboards and internal tools that improve visibility and operational efficiency.

• Rapidly prototype innovative ideas and evolve successful prototypes into production-ready solutions.

• Deploy and operate applications in production using modern cloud infrastructure.

• Monitor application usage and continuously improve solutions based on user feedback and business impact.

• Evaluate emerging AI technologies and identify opportunities to apply them to real business challenges.

• Collaborate closely with Sales, Marketing, Customer Success, HR, Finance, IT and other business teams to translate business needs into elegant technical solutions.

• Ensure high standards of code quality through testing, documentation, version control and GitLab CI/CD.

• Continuously improve application performance, scalability, security and maintainability.

• Stay up to date with the latest AI technologies, software engineering best practices and automation platforms.

Experience & Background

• Strong ownership mindset.
• Bias for action.
• Ability to thrive in a fast-paced environment.
• Comfortable navigating ambiguity.
• Ability to understand complex business processes and translate them into elegant technical solutions.
• Ability to prioritize speed without compromising quality.
• Strong full-stack engineering skills.
• Passion for AI and emerging technologies.
• Product mindset with strong attention to user experience.
• Excellent analytical and problem-solving skills.
• Curious, autonomous and pragmatic.
• Comfortable working directly with non-technical stakeholders.
• Strong communication skills.
• Continuous learner who enjoys experimenting with new technologies.

Technical skills

• BackendStrong Python development skills.
• PHPExperience with FastAPI, Flask or Django.
• REST API design.Authentication (OAuth, JWT, SSO).
• SQL databases (PostgreSQL, MySQL…).Experience with NoSQL databases is a plus.

→ Frontend

• ReactJavascript, TypeScriptNext.jsHTML5CSS, Tailwind CSSModern UI development

→ Cloud & Infrastructure

• Google Cloud Platform is a strong advantageCloud Run, Cloud Function,Cloud Build, Cloud SchedulerFirebaseBigQueryCloud StorageDockerCI/CD using GitLabVertex AISecret ManagerPub/Sub

→ AI

• Experience with modern AI technologies including:LLM APIs (Gemini, Claude, OpenAI…)AI-assisted development tools (Claude Code, Cursor, GitHub Copilot…)Prompt EngineeringAI AgentsRetrieval Augmented Generation (RAG)Model Context Protocol (MCP)Vector databasesFunction Calling / Tool Use

→ Automation

• Experience integrating SaaS applications through:Google Apps ScriptREST APIsWebhooksGoogle WorkspaceCRM platformsWorkflow automation tools (n8n, Zapier or similar)

→ Typical Technology Stack

• PythonReact / Next.jsFastAPIGoogle Cloud PlatformBigQueryFirebaseGitLabDocker n8nGoogle Workspace APIsClaude Code, Google Vertex AI, Gemini and MCP SQL & NoSQL databases

→ Nice to have

• Experience with Google Vertex AI.
• Experience designing and deploying AI agents.
• Experience with LangChain, LangGraph, CrewAI or similar frameworks.
• Experience with data analytics and visualization (Plotly, Dash, Looker Studio, BigQuery).
• Experience with Google Apps Script.Experience with authentication systems (Google Workspace, OAuth, SAML).
• Experience with observability and monitoring.
• Knowledge of cybersecurity principles.

Success Measures

Success in this role means delivering high-impact applications that save hundreds of hours across the business, accelerate decision-making and help teams leverage AI in their daily work.

Why Join EfficientIP?

Why This Role Matters

The opportunity to build AI-powered products from zero to production.Shape the future of AI inside a global software company.Build applications that are used every day across multiple business functions.Work directly with executive leadership and influence strategic initiatives.Enjoy significant autonomy and ownership over your projects.Access the latest AI technologies and modern engineering tools.Join a collaborative team where experimentation and innovation are encouraged.