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Prompt Engineer (Claude Code)

Zartis
Remote
Contract
Posted February 18, 2026
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Job Description

A Prompt Engineer specializing in Anthropic Claude, responsible for maintaining and optimizing AI workflows in the financial industry, supporting end users, ensuring operational stability, and documenting AI systems to facilitate reliable and scalable AI solutions.

Key Responsibilities

  • Maintain, troubleshoot, and ensure business continuity of existing Anthropic Claude projects and skills.
  • Optimize complex, multi-step prompts for financial workflows including compliance and suitability checks.
  • Provide day-to-day user support and act as help desk for AI output issues and nuanced instructions.
  • Support and train a user base of 500, including non-technical teams transitioning to AI tools.
  • Document AI architectures, best practices, processes, and controls to formalize workflows.
  • Improve technical foundations of automated agents by refining LLM logic with Python and JSON.
  • Collaborate with the lead AI strategist to facilitate knowledge transfer and reduce single points of failure.

Requirements

  • 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 such as wealth management finance, where accuracy and compliance are critical.
  • Support and maintain 25 centralised Claude workflows, ensuring operational stability and reliability.
  • Support a user base of 500 people, including non-technical teams transitioning from manual processes.
  • Learn, maintain, and troubleshoot existing public projects and skills built within Anthropic Claude to ensure 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.
  • Document AI architectures, best practices, processes, and controls to formalise current informal ways of working.
  • 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.

Benefits & Perks

100% remote work
Monthly WFH allowance as financial support for remote working
Career development program with 360º feedback
Time allocated during the week for tech training (online courses, English classes, books, conferences, events)
Mentoring program (opportunity to become a mentor or receive mentorship)
Access to Zartis Wellbeing Hub and Kara Connect platform with sessions with mental health professionals, nutritionists, physiotherapists, fitness coaches, and webinars
Multicultural working environment with online team-building activities, webinars, parties, and contests

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