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

Oliver Bernard; Greater London; Hybrid; GBP 80,000 - 100,000; Full time

Benefits offered by this job

Equity

Job summary

Oliver Bernard is seeking a Senior Product Engineer in London for a hands-on role owning features end-to-end. You’ll work with React and Node.js across the stack, contributing to architecture and product direction in a Series A SaaS environment.

You will collaborate closely with Product and Design, enjoy ownership, and impact the platform as it scales. Equity is part of the offer alongside a strong growth trajectory in Central London.

Qualifications

• 5+ years of experience as a Full Stack / Product Engineer.
• Experience in SaaS, startups or fast-paced product environments.
• A strong product mindset with autonomy and ownership.
• Ability to collaborate with Product and Design to ship high-quality features.

Responsibilities

• Own features from concept through production.
• Build end-to-end functionality across the product stack.
• Work primarily with React and Node.js.
• Contribute to architecture and technical decisions as the platform scales.
• Collaborate with Product and Design to translate ideas into usable products.
• Have a voice in how the engineering team and product evolve.

Skills

React

Node.js

Full stack

SaaS

Job description

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