Aveni - Senior Software Engineer (Python)
Requirements
• 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 • 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
Responsibilities
• 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
Benefits
• 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 • 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
Apply in one click
Upload My Resume
Drop here or click to browse · Tap to choose · PDF, DOCX, DOC, RTF, TXT