Job Description:

Company Description

We Dream. We Do. We Deliver.

At Merkle, a dentsu company, we power the experience economy. Whether we’re building the next great app, running CRM at scale for global brands, delivering technology architectures that support millions of users, or providing world-class data, identity, and insights solutions, it’s all in the name of crafting experiences that set brands apart from the competition. Backed by dentsu's legacy of innovation and creativity originating in Japan, we’ve spent over 35 years helping brands build loyalty, drive growth, and connect meaningfully with their audiences.

We’ve been named a global “Leader” by top industry analyst firms in categories as wide-ranging as digital transformation and commerce, experience design, engineering and technology integration, digital marketing, data science, CRM and loyalty, and customer data management.

Why choose Merkle?

Innovation at Our Core: As part of dentsu’s global network, Merkle pushes the boundaries of customer experience, integrating creativity, technology, and data to drive real-world impact. For over 35 years, we’ve been innovating to meet the changing needs of our clients.

Global Reach with Local Expertise: With over 16,000 employees across 30+ countries, and part of a 70,000 employees’ network at dentsu, Merkle blends global insights with a deep understanding of local markets to deliver personalized, effective solutions.

Collaborative Culture: At Merkle, your ideas and contributions truly matter. You’ll join a team that fosters innovation, collaboration, and creative problem-solving. Together, we work on impactful international projects, making meaningful connections every step of the way.

Job Description

Position Overview

Prompt Engineering & Technical Support

Our client is seeking a Senior AI Engineer to lead prompt engineering initiatives and provide technical support to business users. This role is focused on enabling business people across the organization to effectively utilize and maximize AI solutions. You will be the technical expert who coaches and supports users in crafting effective prompts and implementing AI tools within their workflows.

Key Responsibilities:

1. Prompt Engineering Excellence

   • Develop, refine, and establish best practices for effective prompt engineering across the organization
   • Support and coach business users in crafting prompts to maximize AI solution utilization
   • Create comprehensive guides, templates, and resources for prompt engineering
   • Troubleshoot and optimize prompts for better outcomes

2. Business User Support & Enablement

   • Provide hands-on technical support to business users implementing AI solutions
   • Conduct training sessions on AI tools and prompt best practices
   • Help integrate AI tools into business workflows and processes
   • Document and share technical learnings and case studies across the organization

3. Technical Leadership

   • Stay current with AI platforms, tools, and emerging capabilities
   • Evaluate new AI solutions for organizational use
   • Mentor junior technical staff on AI implementation
   • Lead technical communities of practice and knowledge-sharing initiatives

Required Qualifications:

• Minimum 5+ years of experience with AI, machine learning, and/or LLM technologies

• Advanced expertise in prompt engineering and AI tool utilization

• Deep technical knowledge of AI capabilities, limitations, and best practices

• Strong ability to break down complex AI concepts into practical guidance

• Excellent communication skills, particularly with non-technical business users

• Experience in technical training and mentoring

• Hands-on experience with multiple AI platforms and tools

Preferred Qualifications

• Advanced degree in Computer Science, AI, or related field

• Certification in AI/ML or related technical areas

• Experience with AI model fine-tuning and customization

• Knowledge of AI governance and responsible AI practices

What We're Looking For:

A senior-level professional with deep expertise in their specialized domain who is passionate about AI and committed to enabling organizational success. The ideal candidate is collaborative, forward-thinking, and able to work effectively with stakeholders at all levels.

Work visa sponsorship is not available. For local documentation (NIF, NISS), please consult Portuguese authorities.

Additional Information

Benefits and perks:

• 25 vacation days

• Enjoy 2 additional volunteering days to support your passion project

• Mental Health: Benefit from 3 extra wellness days on top of your vacation days and a Mental Health First Aider and Employee Assisstance program to support your well-being

• Health insurance (also possible for family members)

• Cutting Edge Technology & Latest IT tools

• Software-house environment

• Agile and Flexible working hours

• Hybrid working: we combine flexibility with in-person collaboration, with an expectation of 1 day per week/ 4 days per month in the office

• Digital nomad policy

• Focus on career development

• Full access to Dentsu Academy, our global online learning platform

• Beers, foosball, and ping-pong! #workhardplayhard

• Free breakfast every second Wednesday of the month

• Employee discounts

• Team & Company events

• Referral bonus program

At dentsu, Diversity, Equity, and Inclusion (DEI) is central to our vision: "To be at the forefront of people-centered transformations that shape society."

We cherish the unique talents and perspectives of all individuals, welcoming applicants regardless of gender, gender identity, nationality, religion, ethnicity, cultural background, sexual orientation, age, physical or mental ability. By embracing diverse perspectives, we create meaningful change and sustainable growth for our people, clients, and society. Our hiring decisions are guided by qualifications and role-specific requirements, ensuring a workplace free from discrimination and harassment.

#LI-Hybrid #LI-MERKLE

Location: Lisbon

Brand: Merkle

Time Type: Full time

Contract Type: Permanent