Aveni
Senior Software Engineer (Python)
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Senior Software Engineer (Python)
Senior Software Engineer – AI/ML & Platform Engineering @ Aveni
We’re Aveni, redefining how financial institutions use AI. We build real, production-ready agentic systems that revolutionise banking, advisory, and financial services by replacing fragmented processes with intelligent, end-to-end workflows.
Recognised as Fintech of the Year twice, backed by investors like Puma Private Equity, and commercially supported by Lloyds Banking Group & Nationwide Building Society, we’ve scaled rapidly as AI adoption in fintech accelerates. Our engineering team—comprising experienced software engineers & PhD-level AI specialists with strong ties to University of Edinburgh—combines cutting-edge expertise with growth opportunities in a fast-moving scale-up.
#### The Role
Aveni’s AI-first strategy demands next-generation systems where safety, compliance, and trust are foundational. As a Senior Software Engineer, you’ll design and implement the core platform capabilities enabling intelligent, automated workflows in regulated financial contexts. This high-impact role pitfalls between AI/ML systems architecture, compliance-by-design, and scalable platform engineering, building mechanisms like:
- Policy enforcement
- Safety controls
- Behavioural monitoring
- Evaluation frameworks
You’ll help scale from startup to enterprise-grade AI FinTech, tackling critical challenges: how to make AI safe, auditable, and trustworthy in high-stakes financial environments.
#### What You’ll Be Doing
Build Production-Grade AI Systems
- Design and implement scalable Python services powering AI-driven workflows.
- Develop resilient, observable systems with strong error handling and compliance traceability.
- Innovate within a serverless, event-driven AWS architecture (Lambda, DynamoDB, S3, EventBridge).
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Own Delivery End-to-End
- Take full ownership of features from design to production, collaborating across teams:
- Product
- AI Platform
- Compliance/Regulatory
- 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 autonomous AI agents.
Mentor & Elevate the Team
- Support and guide junior/mid-level engineers via mentoring.
- Lead code reviews and promote engineering best practices.
- Build documentation, demos, and knowledge-sharing materials.
Drive AI-Augmented Engineering
- Experiment with 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 production-ready Python expertise ✅ Experience building cloud-native AWS systems (Lambda, DynamoDB, S3, EventBridge) ✅ Hands-on with LLMs or AI/ML systems ✅ Strong understanding of APIs, async architectures, and scalable systems
### Nice to Have
🔹 Prior experience in AI safety, guardrails, or policy enforcement 🔹 Background in agentic systems or autonomous workflows 🔹 Financial services/regulated environments familiarity 🔹 Familiarity with Node.js/TypeScript, Terraform, or CDK 🔹 Knowledge of observability tools and ML fundamentals
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### You’ll Thrive If You
🔥 Are pragmatic, balancing speed with long-term quality. 🔥 Have curiosity about AI, especially safety and responsible use. 🔥 Enjoy a fast-moving scale-up environment. ★ Feel your best when explanations become repeatable and clear. 💼 Are passionate about mentoring and raising team standards.
#### Career Growth
This role offers a clear path to Staff or Lead Engineer, where you’ll: 🚀 Drive cross-team architectural decisions 🚀 Own complex, cross-functional AI systems 🔮 Shape Aveni’s long-term AI platform strategy
#### Join Us in Making a Difference
At Aveni, diversity is core to innovation. We foster an inclusive workplace where everyone feels valued. Were you intrigued? Apply now—mission drive matters, not ticking every box.
#### Benefits at Aveni (You’ll Love These!)
✨ Remote-first (UK-based) ✨ Work abroad policy ✨ Co-working spaces available ✨ 34+ holiday days (bank holidays + birthday off) ✨ Company-wide off-sites ✨ Optional Personal Development Plan ✨ Flexible benefits platform ✨ Protection essentials: Life Insurance, Critical Illness cover, Income Protection, Pension (up to 5% matched, optional higher contributions) ✨ Private health & dental care ✨ Potential share options ✨ Enhanced family leave
Apply today. The financial industry’s future starts here. 🚀
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