Note: The job is a remote job and is open to candidates in USA. Aveni is redefining how financial institutions use AI, building intelligent systems that enhance workflows in the financial services sector. They are seeking a Senior Software Engineer to design and implement AI-driven platforms that ensure safety and compliance in high-stakes environments, while also mentoring junior engineers and contributing to team growth.

Responsibilities

• 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

Skills

• 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

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
• 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

Company Overview