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

We’re looking for a creative and versatile Marketing & Brand Designer to join our fast-growing startup. As the first design hire on the marketing team, you’ll play a critical role in shaping and scaling our brand across digital and offline touchpoints. From ad creatives to launch visuals, you’ll craft high-impact assets that attract, convert, and engage our customers.

This is a unique opportunity to own design execution across channels and work cross-functionally with marketing, product, and leadership in a highly collaborative, startup environment.

Your responsibilities

• Own visual design across all marketing touchpoints — brand, web, ads, social, events, and more

• Design high-impact assets, including:

• Digital ads and paid media graphics

• Product launch visuals and announcements

• Sales collateral (one-pagers, pitch decks, case studies)

• Website illustrations and visuals

• Conference booths, event signage, and swag

• Collaborate with marketing and product teams to create clear, consistent, and engaging creative aligned with campaign goals

• Maintain and evolve our brand guidelines and design systems

• Lead web design (Figma and Webflow) and assist in landing page optimization

• Explore light motion design and animation to bring key assets to life

Qualifications

• 3–5+ years of experience as a marketing or brand designer, preferably in a SaaS or high-growth tech environment

• A strong portfolio showcasing a range of work — especially digital marketing, web, and campaign assets

• Fluency in Figma, Adobe Creative Suite (especially Illustrator, Photoshop, and optionally After Effects)

• Experience with Webflow, or light HTML/CSS

• Excellent eye for typography, layout, color, and visual hierarchy

• Ability to prioritize and execute in a fast-paced, dynamic environment with shifting deadlines

• Strong communication and cross-functional collaboration skills

Bonus points for:

• Motion design skills or interest in learning
  

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.