Head of, Financial Systems Engineering

Mistral; Greater London; On-site; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Healthcare

Parental leave

Retirement plans

Relocation support

Wellness programs

Meal allowance

Transportation allowance

Job summary

Mistral is seeking a Head of Financial Systems to shape the future of the company’s Finance technology ecosystem. You will build a modern data-driven finance function linking finance, data, and business operations to drive performance and strategic decisions.

You will collaborate with the CFO and internal AI resources, defining gaps and a target architecture to support Mistral's growth. This role requires senior leadership in finance tech, data governance, and system integration.

Qualifications

• Engineering degree required or equivalent with strong data/finance systems background.
• Experience in building or modernizing finance tech stacks and data governance.
• Proven ability to lead cross-functional programs across finance, data, and IT.

Responsibilities

• Lead assessment of finance technology landscape, data flows, and pain points.
• Define and prioritize requirements for finance systems with stakeholders.
• Design target architecture for Finance tech, including integrations and data flows.
• Develop data governance including ownership and quality controls.
• Create a plan to clean up and rationalize finance datasets; drive execution.
• Provide a clear recommendation on future setup with costs and risks.
• Ensure migration-ready finance data with defined ownership.

Skills

Project management

Data architecture

GenAI skills

APIs/Workflows

BigQuery

DBT

Coding basics

Finance domain knowledge

Education

Engineering degree

Tools

SAP S4H

Kyriba

Lago

PayFlows

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.

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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