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.
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.
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.
Design and implement scalable Python services powering AI-driven workflows
Work within a serverless, event-driven AWS architecture
Collaborate with Product, AI Platform, and Compliance teams
Contribute to sprint planning, estimation, and delivery
Shape AI & Agentic Systems
Integrate AI models into production systems
Design guardrails, policy enforcement, and behavioural monitoring for AI agents
Support and guide junior and mid-level engineers
Drive AI-Augmented Engineering
Use AI coding tools to accelerate development and improve quality
Help define best practices for AI-assisted software engineering
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
Experience with AI safety, guardrails, or policy enforcement
Experience in financial services or regulated environments
js / TypeScript, Terraform or CDK
Knowledge of observability tools and ML fundamentals
Pragmatic and able to balance speed with long-term quality
Curious about AI, especially safety and responsible usage
Career Growth
Own complex, cross-cutting AI systems
Shape Aveni's long-term AI platform strategy
At Aveni, we believe that diversity drives innovation. 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. Apply now to join us on our mission to transform the financial services industry through AI.
Remote-first working across the UK
~ Work abroad policy
~ 34 days holiday (including flexible bank holidays) and your birthday off
~ 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
~ Enhanced family leave
Remote Senior Software Engineer (Python) in Caldicot employer: Aveni
Aveni is an exceptional employer, offering a dynamic and inclusive work culture that empowers employees to tackle meaningful challenges at the forefront of AI and financial services. With a remote-first approach across the UK, employees benefit from flexible working arrangements, comprehensive personal development plans, and a supportive environment that fosters growth and innovation. Join us to make a significant impact in a rapidly evolving industry while enjoying competitive benefits and a strong commitment to diversity.
