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Salary
≈ $54k – $126k per year (Estimated)
Location
In office (Sheffield)
Seniority
Principal
Employment
Contractor

Confirmed on the employer's own hiring board on Sep 27, 2026. First seen by Alion on Dec 17, 2025. StackOne scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Give your AI agents access to 520+ apps with 32,000+ actions, or build custom integrations in hours. Managed infrastructure, security, and compliance included.

About Us

We are developing a next-gen API platform that allows SaaS businesses of any size to integrate their product with third-party products in a fast, powerful, and secure way.

Our vision

The number of SaaS companies is exploding. But making great integrations is still too expensive and slow. We are building StackOne to solve this and become the platform that powers a connected ecosystem of apps that customers love.

Well-funded and backed by top-tier angels and VCs, we're now growing extremely rapidly and we are currently raising a multi-million dollar round. We're seeking talented and driven individuals who can help us achieve our vision and continue to grow the product and the overall company at a record pace.

Our Stack

As one of the first senior engineering hires in the company, you will have a lot of freedom and agency to choose and work with the technology you love. Our tech stack includes:

  • Infra & monitoring: AWS (ECS, Postgres), Datadog, Sentry…
  • Languages & Frameworks: Typescript (Node.js), NestJs, Rails
  • Other day-to-day Tools: Notion, Slack, Jira, GitHub, and more

Product

Our integration platform is unique for SaaS because:

  • It’s easy and fast. To add dozens of integrations, you only need to integrate once with our unified API and we take care of the rest. This is way faster, cheaper, and more reliable than building every integration to each tool one at a time (it can take weeks/months per integration).
  • We enrich and standardize APIs: Don’t worry about the headache of figuring out how every tool’s API works. We add features that don’t exist out of the box (like using filters in your query or triggering a webhook when data changes) and make all APIs behave in the same consistent way. It’s easier and better to go through StackOne than to connect to the tools directly.
  • Extreme security and privacy: We will soon be SOC2 certified, we have data residency options for GDPR compliance, and more features to protect your customers’ data.
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