Full-Stack Developer (with good capabilities in AI / Gen AI integration)

About the job

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

Center of Excellence (CoE)

where 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.

Belong

to a supportive environment where your unique perspective is valued, and success comes from teamwork.

Impact

with your bold ideas and help drive us forward.

Grow. Belong. Impact.

Your Mission :

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.

Key Responsibilities :

Full-Stack Development

Build and maintain client-facing interfaces, including self-service portals and mobile apps, using modern frameworks.

Develop omnichannel experiences for clients, employees, and partners, ensuring seamless onboarding and engagement.

Collaborate on platform operating models, focusing on orchestration, governance, and compliance by design.

AI Support :

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

Be comfortable with basic concepts like retrieval-augmented generation (RAG), AI agents, and vector stores.

Ensure AI components are embedded into user-facing solutions in a robust and user-friendly way.

Collaboration & Innovation

Work with finance experts, supervisors, and the core operating team to embed domain expertise into AI solutions.

Contribute to POC development, tooling, and infrastructure setup, accelerating delivery and reducing error rates.

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

Your Profile : Technical Skills

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.

Experience

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

Proven track record in process automation or agent-based systems.

Soft Skills

Strong problem-solving and innovative mindset to drive efficiency and task execution.

Ability to collaborate across teams, including finance experts and supervisors, for knowledge base integration.

Commitment to compliance, governance, and European / international standards.

What do we offer

Permanent full-time contract

Hybrid working model

Flexible compensation plan (restaurants, transportation, nursery)

Health insurance

International and young environment

Fruit, coffee and snack always available at our office

Inclusion and Diversity

At Forvis Mazars we are committed to guaranteeing that in our recruitment processes no person will be discriminated against for reasons of gender, age, ethnicity or nationality, religious convictions, or sexual orientation.

We believe in equal opportunities and we are committed to the inclusion of people with disabilities in the professional environment; for this reason, the incorporation of people with an accreditable disability equal to or greater than 33% will be positively valued.