Senior Product Engineer (React/Node.js) | £80-100k | Series A Start-up | 3 days a week in London

Senior Product Engineer | £80-100k + Equity | Series A SaaS | London

We’re working with a high-growth Series A SaaS company that’s building a genuinely exciting product for modern organisations.

They’re taking complex internal processes and making them simpler, smarter and easier to manage , combining great product design with powerful integrations and a highly scalable technical platform.

Having recently reached Series A , they’re at a really exciting stage of growth. The engineering team is still small enough for you to have a real impact on the product and technical direction , but with the backing and momentum to build something at scale.

The Role

This is a hands-on Senior Product Engineer role for someone who enjoys having ownership across the stack and being close to the product.

You’ll:

• Own features from initial idea through to production
• Build end-to-end functionality across the product
• Work primarily with React and Node.js
• Contribute to architecture and technical decisions as the platform scales
• Work closely with Product and Design to turn ideas into high-quality products
• Have a genuine voice in how the engineering team and product evolve

What They’re Looking For

• 5+ years’ experience as a Full Stack / Product Engineer
• Node.js experience is ideal, but they’re open to engineers from other backend language backgrounds who are happy to work with Node
• Experience working in a SaaS, startup or other fast-paced product environment
• Comfortable taking ownership and operating with a high degree of autonomy
• Strong product mindset and an interest in working closely with Product and Design
• Someone who wants to make a tangible impact rather than simply picking up tickets

What’s On Offer

• Series A SaaS company with strong growth trajectory
• 3 days a week in Central London
• Significant ownership over product and technical direction
• Opportunity to join at an exciting stage before the team scales further

If you’re a Senior Full Stack / Product Engineer with strong React experience , and you're open to working with Node.js regardless of your current backend language, this is a great opportunity to join a Series A product team at a pivotal stage of growth .

Senior Product Engineer | React | Node.js | Series A SaaS | £80-100k | Central London