Senior Full-Stack JavaScript Engineer

EPAM Systems; Colombia; On-site; COP 178,011,000 - 275,108,000; Full time

Job summary

EPAM Systems is seeking a Senior Full-Stack Engineer to design and evolve production web systems with ownership across frontend and backend services. You will shape technical design, improve reliability, and collaborate across teams to deliver accessible experiences.

The role requires building React UI features with TypeScript, implementing Kotlin-based backend services, and working with gRPC/protobuf, REST, DynamoDB, PostgreSQL, and AWS within CI/CD environments.

Qualifications

• 3+ years of full-stack web engineering experience shipping production systems.

Responsibilities

• Design full-stack solutions that ship reliably to production
• Build TypeScript and React UI features with accessible patterns and solid state management
• Implement backend services using Kotlin on the JVM and shared platform libraries where appropriate
• Define and maintain service interfaces using gRPC/protobuf and REST endpoints
• Model and optimize data in DynamoDB and PostgreSQL to support product features
• Improve performance across browser runtime, service latency, and data access paths
• Ensure quality with unit, integration, and end-to-end tests and clear release criteria
• Operate effectively within AWS, containers, and CI/CD workflows to deliver changes safely
• Evaluate trade-offs for caching, queues, and eventual consistency in distributed systems
• Lead technical design discussions and drive cross-team alignment on architecture
• Troubleshoot production issues and implement pragmatic fixes and preventative measures

Skills

Full-stack development

TypeScript

Kotlin

Java

API design

AWS

CI/CD

Testing

Cross-team leadership

English communication

Tools

gRPC

protobuf

REST APIs

DynamoDB

PostgreSQL

AWS

Job description

EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

Senior Full-Stack Engineer

We are looking for a Senior Full-Stack Engineer to build and evolve production web systems with strong ownership across frontend and backend services. You will help shape technical design, improve reliability and performance, and collaborate across teams to deliver accessible experiences.

Responsibilities

• Design full-stack solutions that ship reliably to production
• Build TypeScript and React UI features with accessible patterns and solid state management
• Implement backend services using Kotlin on the JVM and shared platform libraries where appropriate
• Define and maintain service interfaces using gRPC/protobuf and REST endpoints
• Model and optimize data in DynamoDB and PostgreSQL to support product features
• Improve performance across browser runtime, service latency, and data access paths
• Ensure quality with unit, integration, and end-to-end tests and clear release criteria
• Operate effectively within AWS, containers, and CI/CD workflows to deliver changes safely
• Evaluate trade-offs for caching, queues, and eventual consistency in distributed systems
• Lead technical design discussions and drive cross-team alignment on architecture
• Troubleshoot production issues and implement pragmatic fixes and preventative measures

Requirements

• 3+ years full-stack web engineering experience shipping production systems
• Strong TypeScript experience with a modern component framework (React preferred)
• Strong JVM backend proficiency with Kotlin or Java, or TypeScript for shared platform libraries
• Strong API development skills with gRPC + protobuf, plus HTTP and REST
• Strong database skills with DynamoDB and PostgreSQL, including data modeling for product features
• Strong AWS experience working effectively in containerized and CI/CD environments as a consumer
• Strong testing discipline across unit, integration, and end-to-end testing
• Cross-team ownership and design leadership skills for driving technical decisions
• Strong collaboration and communication skills to align with stakeholders and partner teams
• English proficiency: B2 Upper-Intermediate

Nice to have

• Experience with cross-platform mobile frameworks such as React Native, Kotlin Multiplatform, Flutter, or Capacitor
• Knowledge of authentication and identity systems including OAuth/OIDC, SSO, and third-party providers
• Experience with OpenTelemetry and structured logging tools such as SigNoz
• Experience building design systems or shared component libraries
• Background in privacy- and accessibility-focused domains and standards such as FERPA, COPPA, or WCAG

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
• Global career opportunities
• Volunteer and community involvement opportunitiesEPAM Employee Groups
• Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn

EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.