Customer Success Manager, StackOne
+ Employee share options plan
1+ day a week in office
Integration infrastructure for AI agents
Job no longer available
Integration infrastructure for AI agents
21-100 employees
Job no longer available
+ Employee share options plan
1+ day a week in office
21-100 employees
Company mission
To build the integration infrastructure that lets AI agents act — securely, reliably, across any system.
Role
Who you are
- 2+ years in a customer success, account management, or similar client-facing role within a SaaS environment
- Strong technical acumen, with experience or literacy in SaaS platforms, APIs, and integration technologies
- Excellent communication and relationship-building skills, with the ability to translate technical concepts for non-technical stakeholders
- Strong project management skills, with the ability to lead customer projects from inception to successful completion
What the job involves
- We’re seeking our first Customer Success Manager, a pivotal role that will shape how we build, manage, and scale customer relationships at StackOne. This is an exciting opportunity to own and develop the customer success function from the ground up, reporting directly to the founder & CEO
- Leading SaaS companies choose StackOne because our product and team allow them to drive incredible commercial success through integrations and partnerships. As the first customer success manager, you will be their main point of contact. You will have a significant amount of ownership and input over StackOne’s success and broader GTM strategy
- Onboarding: Lead the onboarding process for new customers, ensuring a smooth and successful start, working hand-in-hand with our dedicated Solutions Engineers. Your objective is to help customers achieve commercial results from their integrations as rapidly as possible
- Retention & Growth: Monitor customer health, manage renewals, and identify opportunities for account expansion
- Customer Engagement: Build strong relationships at all levels with our customers, from engineers to C-level executives. You will offer insights, strategies, introductions, training, and more to help them achieve their goals
- Issue Escalation: Serve as the primary point of contact for escalating urgent issues or customer requests, alongside our Solutions Engineers. Your intimate knowledge of the customer’s strategy and goals will enable you to provide context and input into the prioritization of their requests
- Advocacy: Advocate for customer needs internally, providing feedback to drive product improvements
Salary benchmarks
Our take
The explosion of SaaS tools has created an integration nightmare for companies. More and more B2B customers are expecting their SaaS tools to integrate with each other natively. But building and managing API connections in-house as a software vendor is time-consuming and costly, diverting teams from their core roadmap and stopping sales teams from selling.
As the next-generation integration platform, StackOne is solving the challenge of building SaaS integrations at scale once and for all. Founded in 2023 by ex-Google and Oracle executives, StackOne has seen exceptionally fast growth since its launch. With its best-in-class security and real-time architecture, the company is well-positioned to become a category leader in the API integration solutions market.
Steph
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 3 rounds)
Apr 2025
$20m
Series A
Nov 2023
$3.6m
Seed
Total funding: $23.9m
Company benefits
- Meaningful share options (EMI) - share in the company's success as we grow
- 25 days holiday + 1 additional day per year of tenure
- Hybrid working friendly - typically 2 days/week in our London office. We’re open to discussing flexible arrangements—please share any preferences in your application
- Private health insurance - including dental & optical
- £15/day lunch budget when working from our London office, up to £120/month
- £1,000 for your home office set up + £500/year top-up
- Health, fitness and gift card discounts
- Cycle2Work and Electric Car Scheme
- Monthly in-person socials
- Annual team offsite to sunny spots (last ones were in Spain and Portugal!)
Company HQ
Central London
Articles
Leadership
Romain Sestier
(Co-Founder & CEO)Previously worked for Google as co-founder and Product Lead of Area120, VP of Product and Sales at Yieldify, co-founder and CEO of Upper.ai and Head of UK Professional Services at ContentSquare.
Guillaume Lebedel
(Co-Founder & CTO)Previously VP of Engineering at Yieldify until its acquisition by Epsilon/Publicis. Also co-founded another start-up and worked at Maxymiser (acq. by Oracle) as a developer.
Diversity, Equity & Inclusion at StackOne
Yasmin Chalmers (Head of People)
- Women @ StackOne community
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