aveni - Senior Software Engineer
Requirements
• A seasoned engineer with 10+ years of experience, including meaningful time building and operating AI/ML systems in production • Real technical leadership. You've set direction, made architectural calls, mentored others, and influenced how a team builds, not just what it ships • Strong hands-on AI/LLM skills: prompt engineering, RAG, model evaluation and agent frameworks. You know how these work in production, not just in demos • Deep expertise in Node.js, with solid experience in the other; comfortable switching contexts depending on what the problem needs • Cloud-native development on AWS. Serverless, event-driven, Lambda, with an instinct for well designed, maintainable systems • A genuine curiosity about where AI is going and the judgment to separate signal from noise when recommending what to adopt • An instinct for building responsibly. You care about auditability, compliance, and the downstream impact of what you ship
Responsibilities
• Setting technical direction for your squad. Owning architectural decisions, managing technical risk, and representing the engineering perspective at our Architecture Review Board • Driving adoption of AI coding tools across the full SDLC, from planning and design through code review, testing, deployment and setting the bar for how the squad works • Delivering production grade code across the full stack: Node.js or Python backends, event-driven AWS architecture, and React where the squad needs it • Mentoring and growing engineers across AI and full-stack domains, through code reviews, design documents, and day-to-day pairing • Collaborating with platform teams to consume shared capabilities and contribute reusable patterns back, not building one-off solutions when a platform component will do • Ensuring everything we ship is compliant-by-design, auditable, and built to the standards expected of software in FCA regulated financial services
Benefits
• You'll work at the frontier of applied AI in a domain where it actually matters, helping financial services firms serve their clients better and meet growing regulatory obligations • AI-native engineering culture: we use AI tools seriously, across the full development process, and we're always looking to push further • High impact from day one. As a Staff Engineer, your technical decisions will shape the product, the platform, and the engineers around you • A talented, collaborative team building something genuinely novel, with the backing, the architecture, and the proprietary models to do it properly • What you’ll love • Remote-first working across the UK. • Work abroad policy for when you want a change of scenery. • Co-working spaces available if you want an office buzz sometimes. • 34 days holiday (including flexible bank holidays) and your birthday off. • Company-wide off-sites (yes, karaoke may happen). • Optional Personal Development Plan. • Flexible benefits platform: you choose the benefits that matter most to you (not the company). • Protection essentials, because we know they matter - Life Insurance, Income protection, critical illness cover, Pension (up to 5% matched employer contribution and optional increased contributions). • Private health- and dental care for your peace of mind. • Potential share options, have a stake in what you’re building. • Enhanced family leave.
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