Lead Full Stack Engineer

Lead Full Stack Engineer |

Hybrid - 2 days onsite, London | £100,000 - £120,000 DOE

We're partnering with a high-growth B2B PropTech SaaS business that's transforming how property professionals access and leverage land data across the UK.

In just a few years, the company has built one of the most advanced property data platforms in the market, integrating thousands of data sources and processing terabytes of information with sub-24-hour latency. With strong product-market fit, continued revenue growth, and ambitious scaling plans, they're now hiring a Lead Full Stack Engineer to help shape the next phase of the platform.

This is a hands-on leadership role within an engineering-led, collaborative environment, ideal for someone who enjoys balancing architectural ownership with meaningful day-to-day coding.

The Role

As Lead Full Stack Engineer, you'll combine deep technical expertise with strong leadership and architectural oversight. You'll drive technical excellence across the organisation, mentor engineers, and influence the long-term direction of the platform.

This is not a purely managerial role, you'll contribute to the codebase daily while also shaping standards, systems, and engineering culture.

What You'll Be Doing

Technical Leadership & Architecture

Provide architectural oversight across frontend, backend, and data infrastructure

Set engineering standards and champion best practices in scalability, reliability, and maintainability

Lead complex system design discussions, balancing speed, scope, and long-term scale

Shape the technical roadmap alongside product and data leaders

Hands-On Engineering

Develop high-quality front-end features using React (Vite) + Tailwind

Design and ship scalable, type-safe APIs using Node.js, Express, and tRPC

Optimise and maintain PostgreSQL databases and query performance

Collaborate with the data team to evolve Elasticsearch-driven architecture

Own delivery of complex features from discovery through deployment and monitoring

Team Leadership & Cross-Functional Impact

Mentor senior and mid-level engineers through pairing, reviews, and coaching

Foster a high-performance engineering culture built on ownership and continuous improvement

Work closely with product, design, and data stakeholders to ensure technical input shapes roadmap decisions

Translate complex technical challenges into clear, actionable insights for non-technical teams

What We're Looking For

7+ years' experience in software engineering

2-3+ years operating in a Lead, Staff, or Senior+ capacity

Proven experience building and scaling SaaS platforms

Experience leading architectural decisions and system design initiatives

Strong full-stack capability in modern JavaScript/TypeScript environments

Tech Stack

Frontend: React (Vite), Tailwind

Backend: Node.js, Express, tRPC

Databases: PostgreSQL, Elasticsearch

Strong adjacent experience is also welcomed.

Nice to Have

Experience in PropTech or data-heavy platforms

Familiarity with UK property, planning, or geospatial datasets

Experience helping scale engineering teams in high-growth environments

Why Apply?

Hybrid working (2 days onsite in Central London)

Competitive salary + EMI scheme

25 days holiday + bank holidays + birthday off + Christmas shutdown

Health cash plan (including dental)

£500 annual personal development budget

MacBook + home office contribution

Collaborative, ambitious team culture with regular socials and company trips

Interview Process

Initial video-based screening

Technical task (React + Tailwind + tRPC + PostgreSQL)

Technical walkthrough & system design interview

Final interview with senior leadership

If you're an experienced engineer who thrives on combining technical depth with leadership impact, and you want to help scale a genuinely high-impact data platform, we'd love to share more.

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