Senior Full Stack Product Engineer

ZipRecruiter; London; Hybrid; GBP 60,000 - 100,000; Full time

Job summary

Join an innovative AI-first B2B SaaS startup as a Full-Stack Product Engineer in London. This role offers a unique opportunity to shape the platform and directly influence product development in a fast-paced environment. Collaborate with founders and tackle exciting challenges, from implementing advanced AI models to enhancing user experience. With a strong focus on customer-centric delivery, you’ll be integral to the team’s success. Enjoy a flexible hybrid work setup, generous equity options, and a culture that values growth and innovation. If you're passionate about AI and startups, this is the perfect opportunity for you!

Benefits

Top 15% equity options plan

Private healthcare & pension contribution

£800 L&D budget

Conference sponsorship

30 days holiday + bank holidays

Company-wide retreats

Flexible hybrid working

Qualifications

• 5+ years as a Full-Stack Engineer in a product-focused role.
• Strong front-end experience with Vue or React.

Responsibilities

• Shape the platform and ship to production daily.
• Work closely with founders on AI + human collaboration.

Skills

Full-Stack Engineering

Vue.js

React

Elixir

Phoenix

PyTorch

Functional Programming

Job description

Job Description

Full-Stack Product Engineer | AI-First B2B SaaS | London (Hybrid)

We’re partnered with a top-ranked AI SaaS startup that's revolutionizing no-code AI workflows and multimodal data automation. Backed by leading AI pioneers and a recent $33M Series A, they power AI adoption at Fortune 500 companies worldwide.

The Role

As the first Product Full-Stack Engineer, you’ll have a huge impact, shaping the platform, shipping to production daily, and working closely with founders. Expect challenges at scale, from applying foundation models like Gemini Pro to crafting a seamless UX that blends AI + human collaboration.

Tech Stack

• Backend: Elixir (Erlang) & Phoenix (prior experience not required)
• Frontend: Vue.js (React experience transferable)
• AI Framework: PyTorch (no prior experience needed)

Seeking

• 5+ years as a Full-Stack Engineer in a product-focused role.
• Passion for early-stage startups and small-team dynamics.
• Strong front-end experience (Vue or React a plus).
• Functional programming knowledge is a bonus.
• Customer-centric mindset, engineers are involved in every step of delivery.

Perks & Benefits

• Top 15% equity options plan
• Private healthcare & pension contribution
• £800 L&D budget + conference sponsorship (NeurIPS, CVPR, etc.)
• 30 days holiday + bank holidays (plus 1 extra day per year of service)
• Company-wide retreats & flexible hybrid working

If you thrive in fast-moving environments and want to build AI-powered tools used at the highest levels, apply today.