Head of Financial Systems

Mistral AI; Greater London; On-site; GBP 150,000 - 210,000; Full time

Benefits offered by this job

Healthcare coverage

Parental leave

Relocation support

Wellness programs

Meal and transportation allowances

Job summary

Mistral AI is seeking a Head of Financial Systems to shape and lead the finance technology ecosystem. You will partner with the CFO and internal teams to assess current systems, define requirements, and design a modern, AI-enabled Finance architecture that supports growth and strategic decision-making.

You will drive data governance, implement scalable data and process automation, and deliver a roadmap covering costs, risks, and migration readiness across multi-country operations.

Qualifications

• Engineering background with strong finance or ERP system knowledge.
• Experience architecting data, processes and systems for finance.
• Hands-on with APIs, workflows and data integration.

Responsibilities

• Lead assessment of Finance tech landscape, processes and data flows.
• Define requirements with stakeholders for a modern Finance stack.
• Design target architecture, data flows and integrations.
• Develop data governance, ownership and quality controls.
• Plan and execute cleanup of Finance datasets.
• Provide a roadmap with costs, risks and transitions.
• Ensure migration-ready Finance data with clear ownership.

Skills

Project management

GenAI power user

Data architecture knowledge

Vibe coding skills

Finance technology assessment

Financial knowledge

Builder and scaler

Analytical skills

Prioritization

Education

Engineering degree or equivalent

Tools

SAP S4H

Kyriba

Lago

Payflows

BigQuery

DBT

Job description

About Mistral

Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems across high-stakes industries like finance, manufacturing, defense, healthcare, and the public sector, co-creating customized AI systems that they can run on their terms.

We are a dynamic, collaborative team passionate about AI and its potential to transform society. Our diverse workforce thrives in competitive environments and is committed to driving innovation. Our teams are distributed between Europe, North America, Asia and the Middle East. We are creative, low-ego and team-spirited.

The Role

As a Head of Financial Systems, you will shape the future of Mistral’s Finance technology ecosystem.

The role exists to build a modern data, systems and AI-driven finance department that bridges finance, data, and business operations to drive financial performance and strategic decision-making.

You’ll collaborate closely with our CFO, our internal Applied AI resources, and teams like, HR, IT, Legal, and Security to assess current systems, identify gaps, and design a target architecture that supports Mistral’s growth.

Your impact will be felt across the organization, from improving profitability to automating accounting and ensuring reliable financial outputs.

What You Will Do

• Lead the assessment of Mistral’s current Finance technology landscape, including tools, processes, data flows and pain points.


• Define and prioritize business, functional, and technical requirements for Finance systems in collaboration with stakeholders.


• Design a target Finance tech architecture, outlining system roles, integrations, and data flows and architectures


• Develop a data governance framework, including ownership, quality controls, and maintenance processes.


• Create and execute a prioritized plan to clean up and rationalize Finance datasets and execute it


• Deliver a clear recommendation on the future Finance tech setup, including costs, risks, and a transition roadmap.


• Ensure Finance data is migration-ready by addressing quality issues and defining ownership.

What We're Looking For

• Strong project management skills, from defining vision, strategy, and roadmaps, to stelar execution


• Engineering academic background, ideally from a tier-1 engineering school


• Deep data architecture knowledge, including mastery of data sources, pipelines, storage, transformation, and metadata management, with hands‑on experience designing and implementing architectures (e.g., APIs, workflows, BigQuery, DBT).


• GenAI power user with Vibe coding skills, automation expertise, and experience building scalable, impactful products in a professional context. Basic coding skills and software development experience are a strong plus.


• Experience in Finance technology assessment, system selection, and knowledge of tools such as SAP S4H, Kyriba, Lago, Payflows, etc


• Solid financial knowledge, including experience working alongside finance teams, understanding FP&A, accounting, cash management, and procurement, and a strong interest in driving value through process automation and efficiency.


• Builder and scaler with experience structuring IT systems (preferably in finance), building and scaling IT teams or departments from the ground up, and operating in multicountry environments.


• Proven ability to build tools and processes from scratch to support company growth.


• Strong analytical skills to evaluate data quality, consistency, and relevance.


• Proficiency in prioritization and the use of performance metrics to drive impact.

What We Offer

We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks.

For the most up-to-date details on benefits available in your location, please refer to our Benefits page.

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