Lead Software Engineer

Lead Software Engineer | Remote First/Hybrid - London | £90,000 – £115,000 DOEWe’re partnering with a high-growth B2B 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 Software 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 RoleAs Lead Software 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 DoingTechnical Leadership & ArchitectureProvide architectural oversight across frontend, backend, and data infrastructureSet engineering standards and champion best practices in scalability, reliability, and maintainabilityLead complex system design discussions, balancing speed, scope, and long-term scaleShape the technical roadmap alongside product and data leadersHands-On EngineeringDevelop high-quality front-end features using React (Vite) + TailwindDesign and ship scalable, type-safe APIs using Node.js, Express, and tRPCOptimise and maintain PostgreSQL databases and query performanceCollaborate with the data team to evolve Elasticsearch-driven architectureOwn delivery of complex features from discovery through deployment and monitoringTeam Leadership & Cross-Functional ImpactMentor senior and mid-level engineers through pairing, reviews, and coachingFoster a high-performance engineering culture built on ownership and continuous improvementWork closely with product, design, and data stakeholders to ensure technical input shapes roadmap decisionsTranslate complex technical challenges into clear, actionable insights for non-technical teamsWhat We’re Looking For7+ years’ experience in software engineering2–3+ years operating in a Lead, Staff, or Senior+ capacityProven experience building and scaling SaaS platformsExperience leading architectural decisions and system design initiativesStrong full-stack capability in modern JavaScript/TypeScript environmentsTech StackFrontend: React, TailwindBackend: Node.js, tRPCDatabases: PostgreSQL, ElasticsearchWhy Apply?Hybrid working (2 days onsite in Central London)Competitive salary + EMI scheme25 days holiday + bank holidays + birthday off + Christmas shutdownHealth cash plan (including dental)£500 annual personal development budgetMacBook + home office contributionCollaborative, ambitious team culture with regular socials and company tripsInterview ProcessInitial video-based screeningTechnical task (React + Tailwind + tRPC + PostgreSQL)Technical walkthrough & system design interviewFinal interview with senior leadershipIf 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.