We are building scalable, cloud-native services and web apps and need a Senior Full Stack Python Engineer (Integrations) to shape robust integrations. You will design event-driven and serverless solutions on AWS, deliver reliable REST APIs and webhooks, and build modern React/TypeScript front ends while coordinating with product, engineering, and external teams to ship dependable platform capabilities—apply now.

Responsibilities

- Design, build, and maintain scalable, cloud-native applications and services
- Implement event-driven architectures using AWS Lambda, EventBridge, SQS, and Step Functions
- Develop and operate long-running, fault-tolerant workflows and asynchronous processing solutions
- Architect, deliver, and support REST APIs, webhooks, and third-party system integrations
- Create backend services with Python, FastAPI, and PostgreSQL
- Build modern front-end applications with React and TypeScript
- Deploy and manage AWS infrastructure using Infrastructure as Code (CDK)
- Model data and optimize application performance in PostgreSQL
- Collaborate with product, engineering, and external teams to deliver dependable integrations and platform features
- Contribute to Agile ceremonies, code reviews, and technical design discussions

Requirements

- Proven experience (3+ years) building applications in Python
- Hands-on experience designing event-driven and serverless architectures on AWS
- Practical knowledge of AWS Lambda, EventBridge, and SQS




- Strong proficiency with AWS Step Functions, IAM, and CDK
- Demonstrated expertise architecting and delivering REST APIs, webhooks, and system integrations
- Solid experience with PostgreSQL, including schema design and query optimization
- Ability to develop web services using FastAPI and Pydantic
- Competency with React, TypeScript, and Redux
- Working knowledge of distributed systems, asynchronous processing, and workflow orchestration
- Clear understanding of OAuth2 authentication and authorization
- Proficiency using Git, Jira, and Agile development practices
- English proficiency at B2 (Upper-Intermediate) level or above

Nice to have

- Background in healthcare, laboratory, or regulated environments
- Experience integrating third-party platforms via REST APIs, webhooks, and event streams
- Familiarity with workflow orchestration tools such as AWS Step Functions or Temporal
- Ability to design resilient, observable cloud-native systems

We offer

- International projects with top brands
- Work with global 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 LinkedIn Learning library and 22,000+ courses
- Integral career opportunities
- Volunteer and community involvement opportunities
- EPAM Employee Groups
- Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn

📌 Senior Full Stack Python Engineer (Integrations) (Argentina)
🏢 EPAM Systems
📍 Argentina