We are seeking a Lead Python Engineer to build a next-generation AI-powered financial assistant platform, rapidly iterating on chat, reporting, and bespoke interfaces used in investment workflows.

You will own end-to-end delivery in a small, highly capable team and help shape product direction.

Responsibilities

Lead design and delivery of backend services for an AI-powered financial assistant

Define system architecture that balances quality, latency, reliability, and cost for AI features

Build production-grade APIs using Python and FastAPI with strong testing and observability

Implement LLM-powered workflows with robust safeguards, validation, and failure handling

Establish automated AI evaluations, test datasets, regression suites, and monitoring for model behavior

Harden applications with security controls for sensitive data, auditing, and access management

Collaborate with product and business users to refine requirements and ship iterative improvements

Drive code quality through reviews, standards, and maintainable engineering practices

Integrate AI-assisted programming and coding agents while critically validating generated code

Troubleshoot production issues with disciplined incident response and root-cause analysis

Guide technical decisions in a low-process environment and keep delivery momentum high

Requirements5+ years of professional software engineering experience with Python





Strong technical leadership and mentoring experience in senior engineering teams

Proven system design experience for production backend services and APIsDeep FastAPI experience or strong experience with comparable Python web frameworks

Hands-on experience with AI-DLC and Gen AI assisted development workflows

Strong Large Language Models (LLM) application experience, including prompt design and integration patterns

Proven AI evaluation and quality engineering skills, including automated evals and regression testing

Strong AI security knowledge, including privacy, access control, prompt-injection risks, and guardrails

High autonomy and self-governance skills to deliver from vague requirements through implementation

Strong product judgment skills to identify edge cases and prioritize reliability and maintainability

Advanced English proficiency (C1, Advanced)Nice to have

Amazon Web Services

Kubernetes

Terraform

ReactJSNext.js

We offer

International projects with top brands

Work with general teams of highly skilled, diverse peers

Healthcare benefits

Employee financial programs

Paid time off and sick leave

Upskilling, reskilling and certification courses

Unlimited access to the Linked

In Learning library and 22,000+ courses

Global career opportunities

Volunteer and community involvement opportunitiesEPAM Employee Groups

Award-winning culture recognized by Glassdoor, Newsweek and Linked

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📌 Lead Python Engineer (AI-Powered Financial Assistant) (Argentina)
🏢 EPAM Systems
📍 Argentina