ERP Process Engineer in London

Help Build Europe's Hypersonic Capability. At Hypersonica, we’re redefining what’s possible in European defence technology. We exist to deliver speed, resilience, and technological independence at a pace that sets a new standard. We are a small, elite team working on problems that matter, and solving them fast.

By joining Hypersonica, you’re not stepping into a predefined role. You’re joining a talent dense environment where every individual shapes the direction of the company. Our philosophy is to hire a small number of exceptional people with broad, deep technical capability, strong judgement, and the ability to operate autonomously. We hire for talent, not rigid boxes. This role represents a business need, but the way it evolves will be shaped by the individual. If you’ve achieved what others said was impossible, or you bring a unique combination of skills that doesn’t fit a traditional mould, we want to hear from you. The work you do here directly contributes to Europe’s technological independence.

What you'll do:

• Own the company-wide implementation and operation of SAP S/4HANA Cloud, Public Edition, from fit-to-standard design and configuration through testing, migration, deployment, adoption, and continuous improvement.
• Define the future-state business processes that will underpin Hypersonica’s operations across finance, procurement, supplier management, inventory, warehousing, manufacturing, quality, maintenance, sales, and logistics.
• Act as the single point of accountability for the SAP programme, owning the roadmap, delivery plan, implementation partners, critical decisions, dependencies, risks, and business readiness.
• Translate complex and often incomplete operational requirements into scalable, standardised SAP processes that support speed, traceability, and production readiness.
• Build the master data, governance, access, approval, and reporting structures required to make SAP the company’s operational source of truth.
• Own the implementation of serial and batch traceability, production orders, inventory control, quality records, procurement workflows, and other controls required for high-consequence hardware manufacturing.
• Lead system integration between SAP and Hypersonica’s wider technology environment, including engineering, manufacturing, HR, CRM, reporting, identity, document management, and other business-critical platforms.
• Own the rollout and optimisation of associated SAP products, including SAP Sales Cloud and SAP SuccessFactors, where they support the wider business systems architecture.
• Establish the SAP operating model, including process owners, super users, training, support, release management, regression testing, issue escalation, and continuous improvement.
• Drive adoption across the business, ensuring teams use the system correctly and that parallel spreadsheets, disconnected workflows, and unofficial sources of truth are removed.
• Build clear programme and systems reporting for leadership, including implementation progress, adoption, data quality, risks, control gaps, and business outcomes.
• Select and manage implementation partners and software vendors, ensuring they deliver against Hypersonica’s pace, quality bar, and operational requirements.
• Ensure business systems remain secure, controlled, audit-ready, and aligned with relevant quality, financial, security, and regulatory expectations.

Who you are:

• A senior SAP or enterprise systems leader with a proven record of implementing SAP S/4HANA Cloud, Public Edition across a complex physical-product business.
• You have led a major ERP implementation end to end, not simply supported one module or maintained an already mature system.
• Experienced across multiple operational domains, ideally including manufacturing, procurement, inventory, warehousing, finance, quality, maintenance, and supply chain.
• Strong in business process design and able to turn fragmented company practices into coherent, scalable operating processes.
• Deeply familiar with fit-to-standard implementation and confident challenging executives and functional leaders when unnecessary customisation creates long-term risk.
• Comfortable owning implementation partners, programme plans, budgets, dependencies, data migration, testing, training, cutover, and business adoption.
• Able to operate credibly with both senior leadership and functional users, translating between operational needs, system architecture, and implementation reality.
• Technically literate across integrations, APIs, identity and access, master data, permissions, reporting, and business application architecture.

What we offer:

• A mission-driven environment with the opportunity to work on one of Europe’s most consequential defence challenges, with direct impact on sovereign capability and security.
• Daily collaboration with leading experts across engineering, operations, business development, and defence, with genuine opportunities to learn, contribute, and grow.
• Exposure to the full lifecycle of complex defence programmes, from customer requirements and commercial strategy through to engineering delivery and flight testing.
• High ownership and autonomy: no time tracking and no micromanagement, just clear objectives and accountability for outcomes.
• A fast-paced environment where good ideas are implemented quickly and feedback from testing and flight drives real decisions.
• A culture that values clarity, integrity, and excellence, and supports people who take initiative and push boundaries responsibly.
• Competitive compensation and real share options aligned with responsibility and impact, not tenure or hierarchy.

At Hypersonica, every hire raises the bar. We are deliberately small, intensely capable, and deeply mission-driven. If this role feels like a strong fit, or if you believe you bring something exceptional that goes beyond the description, we encourage you to apply.

Hypersonica is an equal-opportunity employer and assesses candidates solely on merit, capability, and potential.

You can apply directly to this role or reach out to Nathan Sweeney, Head of Talent. We review every application and aim to respond to all candidates within two weeks, whether the answer is yes or no.