Senior Software Engineer (Python)

About This Opportunity

We are representing a confidential fintech organization that is rapidly scaling its engineering capabilities to meet growing demand for AI-driven solutions in UK financial services. Our client has been recognized with multiple industry awards and is backed by leading investors, working with major financial institutions to deliver production-ready AI systems.

We're seeking a Senior Software Engineer with strong Python expertise to join their engineering team. This is a high-impact role building foundational AI and agentic platform capabilities that power intelligent, automated workflows where safety, compliance, and trust are paramount.

Responsibilities

• Design and implement scalable Python services powering AI-driven workflows within a serverless, event-driven AWS architecture
• Develop resilient, observable systems with strong error handling and compliance traceability
• Build systems that govern AI agent behavior in regulated financial contexts, including policy enforcement, safety controls, and evaluation frameworks
• Take ownership of features from design through to production, collaborating with Product, AI Platform, and Compliance teams
• Build intelligent workflows using LLMs and agentic architectures, integrating AI models into production systems
• Design guardrails, policy enforcement, and behavioral monitoring for AI agents
• Support and guide junior and mid-level engineers through code reviews and knowledge sharing
• Use AI coding tools to accelerate development and 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 use
• 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

How We Work With You

Candidates apply directly through Get A Job.ai. Our talent team will conduct an initial screening to understand your background and ensure alignment with the role requirements. We then submit qualified candidates to our client for consideration. Please do not contact the client directly, as all applications must be coordinated through Get A Job.ai to be considered.

Benefits

Our client offers a comprehensive benefits package including:

• Remote-first working across the UK with co-working spaces available
• 34 days holiday (including flexible bank holidays) plus your birthday off
• Work abroad policy
• Flexible benefits platform
• Protection essentials including Life Insurance, Income Protection, Critical Illness cover
• Pension (up to 5% matched employer contribution)
• Private health and dental care
• Potential share options
• Enhanced family leave
• Optional Personal Development Plan

This role offers a clear career path into Staff or Lead Engineer positions, where you'll drive architectural decisions, own complex AI systems, and shape long-term platform strategy.

Equal Employment Opportunity: Get A Job.ai is committed to inclusive recruitment practices. We welcome applications from all qualified candidates regardless of background. If you're passionate about this opportunity but don't meet 100% of the requirements, we encourage you to apply.