Senior Backend Engineer

About Us

Nexl is the fast-growing LegalTech company on an ambitious mission to elevate the business of law.

We build an AI-driven CRM and growth intelligence platform that brings a firm’s internal and external data together so lawyers, marketing, and business development can collaborate, spot opportunities, and grow revenue.

Recognised by the Financial Times, Deloitte, and the Australian Financial Review as one of the fastest-growing businesses, Nexl is trusted by 150+ firms globally.

We’ve recently closed a $23 million Series B led by Tidemark Capital, accelerating our mission to transform how law firms grow by uniting lawyers, marketing, and business development into a single growth engine.

The Opportunity

We’re looking for a Senior Backend Engineer to join our growing Product & Engineering team, working within one of our cross-functional squads to scale the core services and architecture that power our platform.

This is a high-impact role where you’ll take ownership of backend execution, bring technical depth, and deliver reliable systems that make a difference for our users. Each squad has ownership of parts of our platform, and you’ll collaborate closely with product managers, frontend engineers, and other backend specialists to deliver end-to-end solutions.

Our Tech Stack:

Frontend: React & TypeScript

Backend: Ruby on Rails with GraphQL, and Python with WebSockets & Protobuf

What You'll Own & Do

• Design and develop backend services and APIs in Ruby on Rails and Python
• Architect scalable, secure, and performant systems that integrate seamlessly with our frontend apps
• Optimise databases, APIs, and infrastructure for speed, reliability, and resilience at scale
• Troubleshoot production issues, deliver long-term fixes, and drive continuous improvement
• Champion backend best practices in testing, monitoring, and security
• Collaborate within your squad (Product, Frontend, Backend, Design) to deliver complete solutions with real customer impact
• Mentor and guide junior engineers, raising the bar for backend craftsmanship
• Explore and introduce new frameworks, tools, and approaches that bring value to the team

What We're Looking For

• Proven backend development experience in Ruby on Rails or Python (bonus if you’ve worked with both).
• Skilled in API design, database management, and backend performance optimisation.
• Strong collaboration skills across product and engineering functions.
• Passion for building scalable, maintainable systems.
• Familiarity with unit testing, integration testing, and deployment automation.
• Bonus: Experience in B2B SaaS, legaltech, or professional services.

Life at Nexl

• Remote-first. With Nexlers spread across EMEA, US, and APAC, we’re not bound by location. Work where you do your best thinking.
• ESOP. Employee stock options so you share in the upside.
• High growth. A scaling environment with autonomy, ownership, and visible impact.
• Tools & tech. Modern, AI-first ways of working to help you move faster and smarter, plus a work laptop.
• Birthday leave. Take a paid “Nexl Day” during the week of your birthday.
• Transparent by default. Fortnightly all-hands with strategy, metrics, wins, and learnings.
• Purposeful connection. Team offsites and meet-ups.
• Values-led culture. Guided by The Nexler Way, our values and operating principles that define who we are, how we work, and how we win together.

Our Values

• Committed to Care – We genuinely care about the work we do and the industry we do it for
• Human at the Core – Relationships and empathy guide everything we do
• Different with Purpose – We’re not afraid to stand out. We innovate boldly and deliberately

Even if you don’t tick every box, if you’re excited about our mission, we’d love to hear from you.