Prompt Engineer (Claude Code)

Zartis is a global AI transformation and technology consulting partner where talented engineers and technologists work on cutting edge innovation. We partner with ambitious organizations to design, build, and scale technology solutions that deliver real impact.

Our teams bring deep expertise in AI driven platforms, secure API architectures, and cloud native engineering. You will work on meaningful projects that accelerate the adoption of advanced technologies, from strategy and discovery through to full product delivery, helping turn complex challenges into measurable outcomes.

With engineering hubs across EMEA and LATAM, and long term partnerships in financial services, healthcare and life sciences, and energy and climate, we offer opportunities to work on projects that truly matter. Here, you will not just build technology, you will drive business impact and grow your career alongside industry leaders.

We are looking for an Prompt Engineer (Claude Code) to work on a project in thefinancial industry.

Our teammates are talented people that come from a variety of backgrounds. We’re committed to building an inclusive culture based on trust and innovation.

This role is focused on operational stability and enablement: you will support and maintain 25+ centralised Claude workflows, act as a “second-in-command” to the lead AI strategist, and help ensure the AI function remains reliable, scalable, and well-documented.

We are looking for someone proactive, detail-oriented, and comfortable supporting end users while improving systems behind the scenes.

- Learn, maintain, and troubleshoot existing public projects and “skills” built within Anthropic Claude, ensuring business continuity. 

- Optimise complex, multi-step prompts for financial services workflows, including compliance checks, suitability recommendations, and financial promotions. 

- Provide direct day-to-day user support — acting as a help desk when outputs degrade, context limits are hit, or nuanced follow-up instructions are needed. 

- Support a user base of 500+ people, including non-technical teams transitioning from traditional manual processes. 

- Document AI architectures, best practices, processes, and controls to formalise ways of working that are currently managed informally. 

- Assist in improving the technical foundations behind automated agents, including refining the combination of LLM logic with Python and JSON used for letter-writing and fact-file processing workflows. 

- Partner closely with the lead AI strategist to ensure knowledge transfer and reduce single points of failure.

- Strong hands-on expertise with the Anthropic Claude ecosystem, including model behaviour (e.g., Sonnet vs Opus), limitations, and advanced prompting techniques. 

- Proven experience in prompt engineering for complex, multi-step workflows in production environments. 

- Ability to read, understand, and maintain Python code and JSON used by AI agents. 

- Strong operational mindset: focused on stability, adoption, and day-to-day reliability — not only strategy. 

- Excellent communication skills and empathy for supporting non-technical users. 

- Familiarity working in a highly regulated environment (wealth management / finance), where accuracy and compliance are critical.

- Experience supporting AI adoption programmes at scale (hundreds of users). 

- Experience building or maintaining LLM-powered internal tools (agents, workflow libraries, prompt templates)

- WFH allowance: Monthly payment as financial support for remote working.

- Career Growth: We have established a career development program accessible for all employees with a 360º feedback that will help us to guide you in your career progression.

- Training: For Tech training at Zartis, you have time allocated during the week at your disposal. You can request from a variety of options, such as online courses (from Pluralsight and Educative.io, for example), English classes, books, conferences, and events.

- Mentoring Program: You can become a mentor in Zartis or you can receive mentorship, or both.

- Zartis Wellbeing Hub (Kara Connect): A platform that provides sessions with a range of specialists, including mental health professionals, nutritionists, physiotherapists, fitness coaches, and webinars with such professionals as well.

- Multicultural working environment: We organize tech events, webinars, parties, and activities to do online team-building games and contests.