At a Glance
- Tasks: Build next-gen AI systems for financial services, focusing on safety and compliance.
- Company: Aveni, a leading AI FinTech recognised for innovation and excellence.
- Benefits: Remote-first work, 34 days holiday, flexible benefits, and potential share options.
- Other info: Inclusive culture with clear career growth opportunities and mentorship.
- Why this job: Join a dynamic team shaping the future of AI in finance with real impact.
- Qualifications: Strong Python skills, AWS experience, and a passion for AI safety.
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:
- Systems that govern how AI agents behave in regulated financial contexts, designing and implementing policy enforcement, safety controls, behavioural monitoring, and evaluation frameworks.
- 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
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) in Chester employer: Aveni
Aveni is an exceptional employer, offering a dynamic and inclusive work culture that prioritises innovation and employee growth. As a remote-first company with flexible benefits and generous holiday allowances, we empower our team to thrive while working on cutting-edge AI solutions for the financial services sector. With strong ties to the University of Edinburgh and a clear path for career advancement, Aveni provides a unique opportunity to make a meaningful impact in a rapidly evolving industry.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer (Python) in Chester
✨Tip Number 1
Network like a pro! Reach out to people in the industry, especially those at Aveni or similar companies. Use LinkedIn to connect and engage with them; you never know who might refer you for that Senior Software Engineer role!
✨Tip Number 2
Show off your skills! If you’ve got a GitHub or portfolio, make sure it’s up to date with your best Python projects. Highlight any work related to AI/ML systems or cloud-native applications to catch their eye.
✨Tip Number 3
Prepare for the interview by brushing up on your knowledge of AWS and scalable architecture. Be ready to discuss how you’ve implemented safety controls and compliance in past projects—this is key for Aveni's mission!
✨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 being part of Aveni’s exciting journey in transforming financial services with AI.
We think you need these skills to ace Senior Software Engineer (Python) in Chester
Some tips for your application 🫡
Tailor Your CV:Make sure your CV highlights your strong Python expertise and experience with cloud-native systems on AWS. We want to see how your skills align with the role, so don’t be shy about showcasing relevant projects or achievements!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you’re passionate about AI in financial services and how your background makes you a great fit for Aveni. Keep it engaging and personal – we love to see your personality come through.
Showcase Your Problem-Solving Skills:In your application, highlight specific examples where you've tackled complex problems, especially in regulated environments. We’re looking for candidates who can think critically and innovate, so share those experiences that demonstrate your ability to deliver results.
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 genuinely interested in 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 growth, so highlight any experience you have in mentoring junior engineers or leading code reviews. Share specific instances where you've helped elevate team standards or contributed to knowledge sharing.
