Senior Full Stack Developer (JavaScript)

About the Position

We are searching for a talented Senior Full Stack Developer with solid JavaScript expertise to join our team in Buenos Aires, Argentina.

In this role, you will serve as a key contributor within the squad, autonomously driving end-to-end development on a modern cloud-native infrastructure in AWS, while collaborating in a dynamic setting together with Product, UX, the Tech Lead, and business stakeholders.

Responsibilities

• Create and enhance new features using Node.js on the backend and Angular on the frontend, keeping the code clean and easy to maintain
• Play an active role in the squad's technical and software design discussions, offering your input and building on the architecture defined by the Tech Lead
• Support the deployment and monitoring of components in the cloud through AWS services such as Lambda, ECS, and EKS
• Protect software quality by developing and running automated unit and integration tests with Jest and Cypress
• Maintain code performance and scalability across event-driven architectures
• Team up with Product, UX, and Business groups to understand functional requirements and convert them into effective technical solutions
• Take part in cross-code reviews to ensure consistency and lift the team's overall technical standards

Requirements

• At least 3 years of applied professional experience as a Full Stack Developer, preferably in digital or medium to high-scalability environments
• Strong proficiency in TypeScript, RxJS, and SCSS markup
• Solid background using Angular for frontend development
• Hands-on experience with Fastify for creating backend services
• Track record in the design, consumption, and integration of REST APIs
• Working knowledge or previous exposure to AWS services such as Lambda, ECS, S3, DynamoDB, and CloudWatch
• Steady application of best practices, including Clean Code and SOLID principles
• Understanding of event-driven architectures and messaging platforms such as RabbitMQ and AWS SNS/SQS
• Quality-focused mindset with experience writing unit tests using Jest, along with Cypress or comparable tools for E2E testing
• English at B2 level or higher, with strong written and spoken communication skills

Nice to Have

• Previous background or familiarity with the Fintech industry, digital banking, or high-transaction platforms
• Practical exposure to AWS services such as Lambda, ECS, S3, DynamoDB, and CloudWatch
• Working knowledge of Apache Kafka for distributed event streaming
• Applied experience with CI/CD pipelines using tools such as GitHub Actions or GitLab CI

We Offer

• Opportunity to work with a leading company in the tech industry
• Competitive compensation package
• Collaborative and dynamic work environment
• Professional growth and development opportunities

About the Company

EPAM Systems is a global software engineering and product development company. We partner with the world's leading companies to deliver innovative digital solutions and drive their digital transformation.