Full Stack Engineer

Tact; Greater London; Hybrid; GBP 102,000 - 138,000; Full time

Benefits offered by this job

Meaningful equity

Join founding team

Ownership from idea to production

Job summary

Tact in London is seeking a Full Stack Engineer to help build security-focused products with a founding team. You’ll work hybrid, collaborating directly with the technical founder on ownership from concept to production. Strong Python and React skills and comfort with AI-driven development are required.

The role offers meaningful equity and the opportunity to shape a product used by multi‑billion-pound businesses as the company scales.

Qualifications

• Proficient in full-stack development with modern Python + React.
• Experience applying AI during development workflows.
• Familiarity with early-stage startup dynamics and fast-paced delivery.

Skills

Full stack

AI-enabled development

Startup experience

Tools

Python

React

Job description

Full Stack Engineer - £120,000 + Benefits + Equity - London (Hybrid)

Want to join a founding engineering team that already works with multi-billion-pound businesses?

You'll join a fast-growing cybersecurity startup that's building a smarter way for companies to understand why security problems happen and what they actually need to fix.

They're early-stage, but already have contracts with multi-billion-pound businesses and have been selected to work alongside AI and cybersecurity companies worth tens of billions.

As a Full Stack Engineer, you'll have ownership that goes far beyond writing code. You'll work directly with the technical founder, be trusted with important problems and shape how the product evolves.

Experience you’ll need:

• Full stack experience across Python and React
• Experience working in an early stage environment
• Comfortable using AI throughout development

What’s in it for you:

• Meaningful equity
• Join a founding team
• Own problems from idea to production