This is a remote position.
Aveni is redefining how financial institutions use AI. We build real, production-ready agentic systems that reshape how banks, advisers and financial services firms operate, replacing fragmented processes with intelligent, end-to-end workflows.
We have been recognised as Fintech of the Year for two consecutive years and awarded Best Specialist Technology Service at the Professional Adviser Awards 2025. Backed by leading investors including Puma Private Equity, and commercially supported by Lloyds Banking Group and Nationwide Building Society, we previously completed one of Scotland’s largest Series A rounds. Since then, we’ve continued to grow rapidly as adoption of AI in financial services accelerates, and we’re now scaling our engineering organisation to meet that demand.
Our engineering team includes experienced software engineers and PhD-level AI specialists, with strong ties to the University of Edinburgh, giving you access to exceptional expertise and opportunities for continuous learning as part of the day-to-day work.
The Role
Aveni is building next-generation AI systems for UK financial services, where safety, compliance, and trust are non-negotiable. We're hiring a Senior Software Engineer to work on AI and agentic platform capabilities that power intelligent, automated workflows for financial services. This is a high-impact role building foundational technology that underpins Aveni's AI-first strategy.
Your work will focus on:
You'll work on systems that govern how AI agents behave in regulated financial contexts, designing and implementing policy enforcement, safety controls, behavioural monitoring, and evaluation frameworks. This work sits at the intersection of platform engineering, AI/ML systems, and compliance-by-design architecture. You'll be joining at a pivotal moment as Aveni scales from startup to enterprise-grade AI FinTech, working on problems that matter: making AI safe, auditable, and trustworthy in high-stakes financial environments.
What You’ll Be Doing
Build Production-Grade Systems
Design and implement scalable Python services powering AI-driven workflows
Develop resilient, observable systems with strong error handling and compliance traceability
Work within a serverless, event-driven AWS architecture
Own Delivery End-to-End
Take ownership of features from design through to production
Collaborate with Product, AI Platform, and Compliance teams
Contribute to sprint planning, estimation, and delivery
Shape AI & Agentic Systems
Build intelligent workflows using LLMs and agentic architectures
Integrate AI models into production systems
Design guardrails, policy enforcement, and behavioural monitoring for AI agents
Mentor & Elevate the Team
Support and guide junior and mid-level engineers
Lead code reviews and promote engineering best practices
Contribute to documentation, demos, and knowledge sharing
Drive AI-Augmented Engineering
Use AI coding tools to accelerate development and improve quality
Help define best practices for AI-assisted software engineering
Requirements
What We’re Looking For
Must Have
Strong Python expertise in production environments
Experience building cloud-native systems on AWS (Lambda, DynamoDB, S3, EventBridge)
Experience working with LLMs or AI/ML systems
Strong understanding of APIs, async systems, and scalable architecture
Nice to Have
Experience with AI safety, guardrails, or policy enforcement
Background in agentic systems or autonomous workflows
Experience in financial services or regulated environments
Familiarity with Node.js / TypeScript, Terraform or CDK
Knowledge of observability tools and ML fundamentals
You’ll Thrive If You Are
Pragmatic and able to balance speed with long-term quality
Curious about AI, especially safety and responsible usage
Comfortable working in a fast-moving scale-up environment
A strong communicator who can explain complex ideas clearly
Passionate about mentoring and raising team standards
Career Growth
This role offers a clear path into Staff or Lead Engineer positions, where you’ll:
Drive architectural decisions across multiple teams
Own complex, cross-cutting AI systems
Shape Aveni’s long-term AI platform strategy
Benefits
Join Us in Making a Difference
At Aveni, we believe that diversity drives innovation. We’ve built our business to ensure an inclusive workplace where everyone feels valued and empowered to contribute their best work. If you’re passionate about technology and its ability to drive positive change for the future of financial services, we’d love to hear from you. Even if you don’t meet 100% of requirements, we’d like to hear from you anyway if you believe you’d fit in. Apply now to join us on our mission to transform the financial services industry through AI.
Benefits at Aveni. What you’ll love:
Remote-first working across the UK
Work abroad policy
Co-working spaces available
34 days holiday (including flexible bank holidays) and your birthday off
Company-wide off-sites
Optional Personal Development Plan
Flexible benefits platform
Protection essentials including Life Insurance, Income Protection, Critical Illness cover, and Pension (up to 5% matched employer contribution with optional increased contributions)
Private health and dental care
Potential share options
Enhanced family leave