Senior Full-Stack Product Engineer — AI-Driven SaaS, Hybrid

ThisThat; Greater London; Hybrid; GBP 80,000 - 110,000; Full time

Benefits offered by this job

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Hybrid & flexible working

Dogs welcome at Shoreditch office

Job summary

ThisThat is hiring a Senior Full-Stack Product Engineer in London (Shoreditch). You will own and drive major domains in a growing product platform, building across four key products including an internal survey platform, a scale-ready SaaS product, an intuitive survey interface, and a client platform powered by AI agents.

We value autonomy, curiosity, and a product-minded engineer who thrives in a fast-paced startup environment and has a track record in MarTech/AdTech, AI features, and B2B SaaS.

Qualifications

• Expertise in TypeScript and modern front-end frameworks (React or Angular).
• Strong NodeJS experience and cloud exposure (GCP/AWS/Azure).
• Background in early-stage, high-growth startups with a product mindset.

Responsibilities

• Build features across the full stack that impact internal and external products.
• Collaborate across planning, refinement, execution and retrospectives.
• Balance pace with quality to deliver maximum business value.
• Drive technical best practices and code quality through reviews.
• Contribute to strategic technical decisions with a product focus.
• Engage with data/product teams; align priorities and trade-offs.

Skills

TypeScript

ReactJS

Angular

NodeJS

Cloud (GCP/AWS/Azure)

Early-stage startup

Product mindset

Founding experience

NestJS

AI features

Creator economy

CSS

B2B SaaS / enterprise

Tools

NestJS

Job description

ThisThat is hiring a Senior Full-Stack Product Engineer in London (Shoreditch). You will own and drive major domains in a growing product platform, building across four key products including an internal survey platform, a scale-ready SaaS product, an intuitive survey interface, and a client platform powered by AI agents.

We value autonomy, curiosity, and a product-minded engineer who thrives in a fast-paced startup environment and has a track record in MarTech/AdTech, AI features, and B2B SaaS.