Full-stack AI Engineer (Athens, Greece)

D ONE · Athens, Greece (Hybrid) · Full-time · Posted 2026-06-26

Workplace: hybrid

Description

D ONE is a premium consultancy specialized in data, AI, and transformation. We help organizations turn ambition into impact by aligning strategy, building strong data foundations, delivering high-impact solutions at scale, and ensuring adoption and trust through governance and people focus.

From Zurich, Munich, and Athens, we support clients across Europe with deep expertise along the entire data value chain. Our approach is pragmatic, people-centric, and built for lasting value.

In this role you will design and build end-to-end AI-powered applications for our clients: from backend logic and data pipelines to polished user-facing interfaces. Based in our consulting hub in Athens, you will work with your project team to deliver the high quality and reliability we are known for.

Your tasks will include:

Analyzing requirements and designing tailored full-stack AI solutions
Building and integrating end-to-end applications spanning frontend interfaces, backend services, APIs, and AI/ML components
Developing and deploying generative AI features, including LLM integrations, RAG pipelines, and AI agents
Presenting results and prototypes to stakeholders and management
Occasionally traveling to Switzerland and internationally to meet clients and collaborate with our team at headquarters in Zurich

What you bring:

University degree in Computer Science or related fields
Strong proficiency in full-stack development, including frontend frameworks (e.g. React, Vue) and backend technologies (e.g. Python, Node.js, REST/GraphQL APIs)
Hands-on experience building and integrating AI/ML models and LLM-based applications (e.g. using OpenAI, Anthropic, LangChain, or similar)
Familiarity with cloud development and deployment in at least one of the following platforms: Azure, AWS, GCP
Experience with databases (relational and/or vector databases) and data handling fundamentals
Down-to-earth and pragmatic, result-oriented attitude
Excellent communication skills in English

What we offer:

An uncomplicated and low noise environment that enables to focus on what matters most.
An international team of talented people from diverse backgrounds that have ambitions, always enjoy an additional challenge, and know how to have fun at work.
Further development opportunities through our D ONE Academy including mentoring program, knowledge sharing sessions, expert and working groups, as well as tailor-made soft-skill and leadership training.
Frequent offsite socializing events.

To be successful in this role you will need to:

Strive to understand your clients' needs.
Deliver outstanding results with high business value in a comprehensible form.
Have the intellectual agility required to get the job done in an easy-to-do-business-with way.
Value clever and creative team play.

Are you interested in joining a great team with a proven track record and to work on projects that will constantly challenge you?

We are happy to receive your application with reference:

D ONE Value Creation AE
Stamatis Stefanakos
Mourouzi 10
Athens 106 74

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About the company

1) What the company does: D ONE is a consultancy that helps organizations create value from data by guiding corporate transformation toward an information-driven enterprise. Teams are composed of hands-on business practitioners who combine practical experience with strong academic credentials. 2) How the product works: They provide advisory services that assess a client’s data maturity, design a data-driven transformation, and guide implementation with concrete, easy-to-follow steps that translate data capabilities into business outcomes. 3) How it differs from competitors: D ONE emphasizes a practical, easy-to-do-business-with approach anchored by experienced business practitioners and solid academic insight, aiming to deliver real value rather than simply offering technology or theoretical frameworks. 4) The goal: to enable clients to realize measurable business value from data by becoming an information-driven organization through focused, doable transformation efforts.

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

Zurich, Switzerland

Founded

2005

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Simplify's Take

What believers are saying

August 20, 2026 AI Industrialization Playbook matches enterprises seeking measurable AI value now.
The April 7, 2026 interview directly targets failed pilot fatigue and demand for scale.
D ONE’s publications and conferences create inbound credibility with Swiss decision-makers in 2026.

What critics are saying

Accenture, Deloitte, and cloud vendors can replicate D ONE’s playbook quickly.
Without proprietary software, D ONE depends on consulting margins and client budget cycles.
If clients internalize AI operations by 2027, D ONE becomes a replaceable vendor.

What makes D ONE unique

Hans Peter Gränicher, 2026 CEO, sells AI industrialization, not ad hoc analytics.
D ONE’s Strategy-Foundation-Scale-Trust framework packages transformation into a repeatable operating model.
November 17, 2026 Zurich conference reinforces thought leadership inside Swiss enterprise data circles.

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Benefits

Mentorship Program
Training Programs
Professional Development Budget
Company Social Events

D ONE

Full-stack AI Engineer

About the job