Full Stack Developer

Diabolocom; Paris; On-site; EUR 50,000 - 70,000; Full time

Job summary

Diabolocom, a leading European AI-first, cloud-based CCaaS and CX solutions provider, is expanding its Cross Functional Projects team in Paris. You will design, build, and maintain scalable web applications and APIs using React and Node.js, with a PostgreSQL/Sequelize stack, while collaborating across Operations, Product, and IT.

You’ll own tasks end-to-end in a fast-paced, international environment. You’ll join a hands-on team focused on pragmatic, autonomous work, pursuing high code quality,

Qualifications

• 3 years of software development experience (or relevant apprenticeship).
• Experience building and maintaining web applications and APIs.
• Backend development experience with Node.js and Express, PostgreSQL, Sequelize.
• Knowledge of React and modern web architectures.
• Care about code quality and maintainability.
• Familiarity with monorepo architectures, CI/CD, Kubernetes and Helm is a plus.

Responsibilities

• Design, build, and maintain scalable web apps and APIs using React, Node.js (Express), PostgreSQL, and Sequelize.
• Ensure high code quality and maintainability in a monorepo setup.
• Partner with a cross-functional project manager and collaborate with Operations, Product, and IT.
• Contribute through the full project lifecycle from scoping to deployment and post-production support.
• Enhance internal tools to improve workflows and efficiency.
• Collaborate on DevOps with focus on CI/CD, deployment automation, and Kubernetes/Helm.

Skills

Node.js

Express

PostgreSQL

Sequelize

React

Monorepo

CI/CD

Kubernetes

Helm

Tools

Kubernetes

Helm

Job description

Founded in 2005, Diabolocom is a leading European provider of AI-first, cloud-based contact centre (CCaaS) and customer experience (CX) solutions. We combine proprietary AI technology, native telecom infrastructure, and deep CRM integrations to help businesses deliver smarter, more seamless customer experiences.

Trusted by over 400 clients, we are entering a new phase of growth, scaling our technology and accelerating our international expansion, with offices in the United States, Canada, Brazil, and the United Arab Emirates.

Our ambition is to become a global technology leader by combining engineering excellence, continuous innovation, and long-term vision. At Diabolocom, you'll contribute to impactful products in a growing international company that remains agile enough for your ideas and contributions to make a real difference.

About the Role

As part of our Cross Functional Projects team, you will work on a variety of technical and business-driven projects with a direct impact on Diabolocom's operations and growth.

You'll join a hands-on team tackling important business challenges, where pragmatism, autonomy, and fast execution are key. From developing applications and internal tools to contributing to cross‑functional initiatives, you'll have the opportunity to take ownership of your work, explore different technical challenges, and see your solutions make a tangible difference.

If you enjoy building high‑quality software, taking initiative, and working in a dynamic environment where you can have a real impact, this role is for you.

Your Responsibilities

Software Development

• Design, build, and maintain scalable web applications and APIs using React, Node.js (Express), PostgreSQL, and Sequelize.
• Ensure high code quality and maintainability, and contribute to managing our codebase within a monorepo architecture.

Strategic Projects

• Partner with a cross‑functional project manager and collaborate with teams across Operations, Product, and IT to deliver strategic projects.
• Contribute throughout the entire project lifecycle, from initial scoping and design to development, deployment, and post‑production support.

Tooling & Infrastructure

• Enhance internal tools to improve workflows and operational efficiency.
• Collaborate on DevOps initiatives, with a focus on CI/CD, deployment automation, and orchestration using Kubernetes and Helm.

About You

Your Experience & Technical Skills

• You have around 3 years of experience in software development. Relevant apprenticeship experience is also welcome.
• You have experience building and maintaining web applications and APIs.
• You are comfortable with back‑end development, particularly Node.js and Express, and have experience working with PostgreSQL and Sequelize.
• You have knowledge of React and modern web application architectures.
• You care about code quality, maintainability, and following sound development practices.
• Familiarity with monorepo architectures, CI/CD, Kubernetes, and Helm is a plus.

Your Mindset

• Autonomous: You can take ownership of your work and move projects forward independently.
• Proactive: You identify opportunities for improvement and are comfortable suggesting and implementing solutions.
• Pragmatic: You focus on practical, effective solutions and know how to balance technical quality with delivery speed.
• Curious and adaptable: You enjoy tackling different technical challenges and learning new tools and technologies.
• Collaborative: You work well with others and communicate effectively with both technical and business stakeholders.
• Committed: You are engaged in your work, take responsibility for your deliverables, and contribute positively to the team.

Here is what you'll enjoy at Diabolocom:

• Join us at a pivotal stage of growth: contribute to a fast‑growing technology company with ambitious international expansion plans and opportunities to develop your skills and career.
• Make a tangible impact: work in a lean team where your ideas, technical decisions, and contributions can make a real difference.
• Take ownership: get involved in meaningful projects from initial requirements to production, with room to take initiative and grow your responsibilities.
• Grow your expertise: benefit from comprehensive onboarding to develop a deep understanding of our products, technologies, and business.
• Work in an international environment: collaborate with teams across a growing global organisation.
• Enjoy a great workplace: our office is located in the heart of Paris, just 100 metres from Opéra Garnier.
• Get the right tools for the job: choose your preferred IT equipment to work efficiently.

At Diabolocom, diversity and inclusion are in our DNA. All qualified applicants will receive equal consideration for employment without regard to colour, language, religion, sex, sexual orientation, gender identity, national or social origin, opinion disability, age.

As part of our hiring process, please note that any employment offer or service provider offer will be subject to a background check, including verification of your identity, educational credentials, and previous employment history.