About StackOne

StackOne is the universal integration layer for modern SaaS products. We’ve raised $24m in 2 years, and we’re backed by top tier investors like Google Ventures and Workday Ventures.

Our unified API platform lets vendors ship hundreds of native, white label integrations in days, not months, by abstracting away dozens of disparate third party APIs into a single, normalized interface. On top of those APIs, we provide AI Agent Actions so customers can build agentic workflows without wrangling OpenAPI specs.

StackOne sits behind the scenes as an embedded iPaaS: SOC 2 compliant, multi-tenant, and invisible to end users powering integrations for future-of-work SaaS categories such as HR, Compliance, and AI Agents.

Our customers are established B2B SaaS companies that:

• Sell to mid market and enterprise buyers

• Are building AI Agents in the near future

• Need deep, native integrations to win competitive deals and power their product

• Value time to integration over building connectors in house

We typically close OEM and embedded licensing deals, multi-year (1 to 3 year) contracts, five to seven figure TCV, with a strong land and expand model. Key buyer personas are the CPO and CTO.

Role overview

The People Lead at StackOne will be a key strategic partner to the leadership team. You'll own the development of our People function from the ground up, establishing the infrastructure, policies, and practices that will support our next phase of growth and beyond. This is a unique opportunity to shape the culture of a company with big ambitions and a bold roadmap.

Your responsibilities

• People Strategy & Culture Define, build, and evolve a culture that attracts outstanding talent, fosters psychological safety, and enables high performance across all levels of the business.

• Partner with Talent Partner with the Head of Talent on building robust hiring strategies, forecasting for growth and partnering with hiring managers to build high-performing, diverse teams with a strong focus on retention and growth.

• Organisational Development Establish scalable People infrastructure, including performance management systems, coaching frameworks, learning & development, and internal communications.

• Compensation & Benefits Design and implement fair, competitive, and transparent compensation, equity, and benefits programs that align with our values and growth goals.

• International Expansion Lead and guide the team on best practices building out a global team, building policies and procedures for various geos including the UK, Europe, US and other regions as we scale.

• Employee Experience & Engagement Develop initiatives to support employee well-being, engagement, and progression. Create clear feedback loops and recognition systems that celebrate achievements.

• People Ops & Compliance Ensure all policies, procedures, and employment relations are compliant, inclusive, and fit for purpose as we scale across multiple geographies.

• People Analytics Use data and insights to influence organisational design, leadership development, and strategic planning.

• Diversity, Equity & Inclusion (DEI) Champion DEI initiatives across hiring, onboarding, policy development, and leadership training.
  

Core qualifications

• Proven experience in a People Lead, Head of People, or equivalent role, confident leading across the full employee lifecycle in an early stage environment.

• Ability to zoom in and out, rolling up your sleeves to build and implement practical HR tools, while also advising on org-wide people strategy and scaling challenges

• Skilled at partnering with founders, COOs, and senior leaders; bringing clarity, calm, and sound judgement to complex people challenges

• Strong interpersonal and coaching skills; able to navigate sensitive conversations and build trust quickly across diverse startup cultures

• Comfortable managing multiple stakeholders simultaneously, flexing your style to meet different business stages, needs, and team dynamics—without losing sight of quality or impact

• 7+ years of experience in People/HR roles, with at least 3+ years at a leadership level

• Experience working in a high-growth startup or scale-up

• Strong understanding of UK & US employment law

• Hands-on with tools like HRIS platforms, ATS, and people analytics dashboards

• Strategic mindset with a passion for culture, engagement, and making work better for everyone

Bonus points

• CIPD Level 5 or above (or equivalent qualification)

Why Join Us?

• Join one of Europe’s fastest-growing startups

• Work with a veteran team of ex-employees of Google, Microsoft, Oracle, Coinbase, JP Morgan and more

• Participation in the company’s employee share options plan

• 25 days holiday + 1 additional day holiday per year of tenure

• Flexible work setup - we're hybrid-friendly

• £1,000 for your home office set up + £500/year top-up

• Cycle2Work and Electric Cars scheme

• Private health insurance (including dental & optical)

• Health, fitness and gift card discounts

• Annual team offsite to sunny spots (last ones were in Spain and Portugal ☀️)

Ready to help us change the game for SaaS integrations? Get in touch and let's chat!

We believe diversity drives innovation. We encourage individuals from all backgrounds to apply. As an equal-opportunity employer, we celebrate diversity and are committed to creating an inclusive environment for all employees.