Product Manager, StackOne

Growth

Salary not provided

+ Employee share options plan

Senior and Expert level

London

2-5 days a week in office

Unified API for B2B SaaS

Be an early applicant

Unified API for B2B SaaS

21-100 employees

B2BArtificial IntelligenceBig dataDeep TechAnalyticsSaaSAPIData Integration

Be an early applicant

Salary not provided

+ Employee share options plan

Senior and Expert level

London

2-5 days a week in office

21-100 employees

B2BArtificial IntelligenceBig dataDeep TechAnalyticsSaaSAPIData Integration

Company mission

To empower SaaS companies to build groundbreaking products that seamlessly connect with their customers’ stacks.

Job

Company

Role

Who you are

5+ years in product with 2+ years shipping LLM apps or agents, including tool/function calling and RAG
Proven PLG track record moving core metrics
Strong technical fluency across AI app stacks, MCP or similar tool frameworks, webhooks and OAuth
Product marketing chops: positioning, launch plans, narrative, demo storytelling
Experience with automation and orchestration patterns
Data-driven, experiment-oriented, excellent writing
London based, comfortable working directly with founders and a tiny squad
Comfortable “vibe coding” quick prototypes to validate ideas

What the job involves

We’re looking for a Product Manager – Consumer AI to own our consumer-facing products:
Disco: a consumer-friendly hub for discovering and using AI tools via the MCP ecosystem
StackChat: our LLM client with citations, evolving into agentic execution
You’ll lead a highly focused squad of 2-3 engineers to build the best consumer tool layer and the best LLM client, with a strong product-led growth (PLG) mandate. You’ll work directly with the founders and have high ownership in shaping vision, distribution, and execution
Define product vision, roadmap, and success metrics for Disco and StackChat
Drive PLG loops across activation, retention, referral, and monetization
Run weekly experiments and rapidly iterate on consumer AI use cases
Lead product marketing: positioning, launches, website copy, demos, templates
Build distribution channels: integrations directory, presets, shareable agents, SEO
Ensure world-class LLM UX: context handling, citations, tool calling, safety and privacy
Define analytics and experimentation stack; report WAU, activation, and feature adoption
Partner with founders on pricing and packaging across consumer and prosumer tiers

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

Insights

Top investors

Glassdoor (5)

Company

Funding (last 2 of 3 rounds)

Apr 2025

$20m

Series A

Nov 2023

$3.6m

Seed

Total funding: $23.9m

Company benefits

Participation in the company’s employee share options plan
25 days holiday + 1 additional day holiday per year of tenure
Remote working friendly
£1,000 for your home office set up + £500/year top-up
Cycle2Work and Electric Car Scheme
Multiple company offsites per year
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)

Company HQ

Central London

Articles

StackOne Secures $3.6M in Seed Funding led by Episode 1

Ex-Google & Oracle execs raise £2.8m seed funding for startup

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.

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