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For Companies At a Glance
- Tasks: Build cutting-edge AI systems for financial services and ensure compliance and safety.
- Company: Join Aveni, a leading FinTech recognised for innovation and excellence.
- Benefits: Enjoy remote work, 34 days holiday, and flexible benefits tailored for you.
- Other info: Dynamic team culture with opportunities for mentorship and career growth.
- Why this job: Make a real impact in the AI space while shaping the future of finance.
- Qualifications: Strong Python skills and experience with cloud-native systems on AWS required.
The predicted salary is between 60000 - 80000 £ per year.
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
- Take ownership of features from design through to production
- Collaborate with Product, AI Platform, and Compliance teams
- Contribute to sprint planning, estimation, and delivery
- Build intelligent workflows using LLMs and agentic architectures
- Integrate AI models into production systems
- Design guardrails, policy enforcement, and behavioural monitoring for AI agents
- Support and guide junior and mid-level engineers
- Lead code reviews and promote engineering best practices
- Contribute to documentation, demos, and knowledge sharing
- Use AI coding tools to accelerate development and improve quality
- Help define best practices for AI-assisted software engineering
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
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
Senior Software Engineer (Python) employer: Aveni
Contact Detail:
Aveni Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer (Python)
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, especially those at Aveni or similar companies. Use LinkedIn to connect and engage with their posts. You never know who might give you a heads-up about job openings!
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your Python projects, especially those related to AI or cloud-native systems. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by brushing up on your knowledge of AI safety and compliance. Aveni is all about making AI safe and trustworthy, so being able to discuss these topics confidently will definitely impress them!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining Aveni and being part of their mission to transform financial services.
We think you need these skills to ace Senior Software Engineer (Python)
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Software Engineer role. Highlight your Python expertise and any experience with AWS, AI/ML systems, and scalable architecture. We want to see how your skills align with what we’re looking for!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share your passion for AI and financial services, and explain why you’re excited about joining Aveni. Don’t forget to mention any relevant projects or experiences that showcase your fit for the role.
Showcase Your Projects: If you’ve worked on any interesting projects, especially those involving AI or cloud-native systems, make sure to include them in your application. We love seeing real examples of your work and how you tackle challenges!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining our team at Aveni!
How to prepare for a job interview at Aveni
✨Know Your Python Inside Out
Make sure you brush up on your Python skills, especially in production environments. Be ready to discuss your past projects and how you've implemented scalable Python services, as this is crucial for the role.
✨Familiarise Yourself with AWS
Since Aveni works within a serverless, event-driven AWS architecture, it’s essential to understand AWS services like Lambda, DynamoDB, and S3. Prepare to talk about your experience with these tools and how you've used them in previous roles.
✨Understand AI Safety and Compliance
Given the focus on AI systems in regulated financial contexts, be prepared to discuss your knowledge of AI safety, guardrails, and policy enforcement. Think of examples where you've ensured compliance in your work.
✨Show Your Mentorship Skills
Aveni values team collaboration and mentorship. Be ready to share experiences where you've guided junior engineers or contributed to code reviews. Highlight your passion for elevating team standards and fostering a collaborative environment.