Senior Python Engineer - AI & Agentic Systems (Remote)

Doist; United Kingdom; Remote; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Remote-first UK

Work abroad policy

Co-working spaces

34 days holiday

Company off-sites

Personal development plan

Flexible benefits

Life Insurance & Protection

Private health & dental

Share options

Enhanced family leave

Job summary

Aveni is redefining how financial institutions use AI, building production-grade Python services and scalable AI-driven workflows in a secure, regulated environment across the UK. You will design and implement policy controls, safety features, and observability within a serverless AWS stack, contributing to a trustworthy AI platform.

This Senior Software Engineer role offers opportunities to mentor engineers, lead end-to-end delivery, and shape AI-driven financial workflows while collaborating

Qualifications

• 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.

Responsibilities

• Build production-grade Python services powering AI-driven workflows.
• Design scalable, observable systems with strong error handling and compliance traceability.
• Work within a serverless, event-driven AWS architecture.
• Own delivery end-to-end from design through production.
• Mentor junior and mid-level engineers and lead code reviews.
• Collaborate with Product, AI Platform, and Compliance teams.

Skills

Python production

AWS serverless

LLMs / AI systems

APIs & async

Tools

Node.js / TypeScript

Terraform or CDK

Job description

Aveni is redefining how financial institutions use AI, building production-grade Python services and scalable AI-driven workflows in a secure, regulated environment across the UK. You will design and implement policy controls, safety features, and observability within a serverless AWS stack, contributing to a trustworthy AI platform.

This Senior Software Engineer role offers opportunities to mentor engineers, lead end-to-end delivery, and shape AI-driven financial workflows while collaborating