Senior Fullstack Engineer (Node.js

Forvis Mazars Group SC is an independent member of Forvis Mazars Global, a leading global professional services network. Operating as an internationally integrated partnership in over 100 countries and territories, we specialise in audit, tax and advisory services.

As part of Forvis Mazars ’ strategic move to create a centralized service to serve clients across Europe, we have created a Global Compliance & Reporting service with teams, processes, and technology that allows multinational groups to meet all their accounting, tax, payroll, and legal obligations and commitments, both locally and internationally while having accurate information centralized and delivered from our Center of Excellence (CoE) .

We are hiring a Full-Stack Developer (with good capabilities in AI / Gen AI integration) to join this strongly growing team in Barcelona.

Join us to grow your career through global opportunities, diverse projects, and continuous learning. We are seeking a skilled Full-Stack Developer (with good capabilities in AI / Gen AI integration) to join our innovative Agentic AI Center of Excellence team in Barcelona. This hybrid role will play a pivotal role in designing, developing, and deploying agent-powered process automation solutions for key processes (P2P, O2C, A2R, G2G, tax, payroll). The candidate will blend expertise in AI engineering (agent orchestration, LLM integration) with full-stack development (client portals, omnichannel interfaces) to drive efficiency, scalability, and compliance in a POC phase, with potential expansion.

Full-Stack Development :

Work closely with AI engineers to integrate LLM-based services into web applications.

Support group alignment and vision by designing scalable technology that meets business outcomes and quality management goals.

Full-stack expertise (e.g., React, Node.js, Python) with a focus on scalable web applications and integration with AI-driven workflows.

Knowledge of cloud platforms (e.g., Azure) and DevOps practices (CI / CD, MLOps) to ensure robust deployment and monitoring.

Advanced knowledge of vibe-coding technics and product development life cycles.

Familiarity with AI concepts and frameworks (LangChain, Hugging Face, Azure OpenAI) — hands-on experience is a plus.

Knowledge of data pipelines and APIs (Databricks, MS Fabric, vector stores) is an advantage.

3+ years in full-stack development, with hybrid project experience preferred.

~ Permanent full-time contract

Hybrid working model

Health insurance

Fruit, coffee and snack always available at our office