Senior/Lead Full Stack Developer

EPAM Systems; Portugal; Remote; EUR 80,000 - 110,000; Full time

Job summary

EPAM Systems Inc in Portugal is seeking a Senior/Lead Full Stack Developer for fully remote work. You will lead technical direction while coding, shaping scalable solutions and guiding delivery to avoid blockers. The role emphasizes hands-on leadership and setting engineering standards.

Responsibilities include delivering large tasks with minimal direction, refining requirements, and evangelizing best practices across the team. Strong React/JS, CI/CD, testing, and cloud skills are highly valued.

Qualifications

• Proven experience in designing and building web applications using React/Redux.
• Strong knowledge of modern JavaScript (ES6+), CSS3, and frontend testing tooling.
• Experience with CI/CD practices, code quality, and secure coding principles.

Responsibilities

• Fulfill Senior Engineer responsibilities and drive large tasks with minimal direction.
• Provide technical leadership and define best practices for development.
• Help refine product requirements and shape technical direction for the team.
• Mentor teammates and evangelize engineering standards and processes.

Skills

JavaScript (ES6)

ReactJS

Redux

GraphQL

CSS3

Web testing automation

Security-focused testing

CI/CD

Git workflows

Tools

Saucelabs

Git

GitHub flows

Webpack

Jasmine

Jest

WebdriverIO

nginx

Jenkins

Terraform

AWS

OpenSearch/ELK

BigQuery

Kafka

Spark

Job description

Every software platform faces a moment when complexity threatens to slow progress and cloud decisions. The Senior/Lead Full Stack Developer role in Portugal is fully remote and sits at the point where technical leadership and hands-on expertise keep delivery moving forward. Teams rely on clear direction and early action to avoid problems that could stall momentum. You set the standard for best practices and guide the team through challenges before they become blockers. The person in this role shapes how the team delivers reliable, scalable software that stands up to real-world demands.ResponsibilitiesFulfill all Senior Engineer responsibilities and Q4 Staff Engineer expectationsDrive and deliver large tasks with minimal directionHelp the team refine product requirements and ideasProvide technical leadership to the teamDefine best practices and processes for developmentAnticipate team problems and take action early to avoid themEvangelize best practices and act as a strong communicatorRequirementsFluency in JavaScript with modern ES6 syntax, CSS3, ReactJS, Redux, GraphQL, Jasmine, Jest, redux-saga, redux-thunk, webpack, eslint, WebdriverIO, nginx and JenkinsUnderstanding of web application designs, continuous integration/continuous deployment, web testing automation, secure coding practices and security-focused testingExperience with browser testing using SaucelabsSolid knowledge of source control, especially tools such as Git and GitHub flowsFluency in either Android (Java 8+, Kotlin, SQLite), iOS (Swift, Objective-C, Cocoapods), or C++ technology set, with experience in Xcode, Android Studio, IntelliJ or similar IDEsExperience deploying an app on the respective Google Play Store or Apple App Store (or comparative experience for internal corporate development)Experience with dependency management, SDKs and API contractsFluency in Java and/or Python, with strong knowledge of software development methodologies and best practicesExperience with distributed data systems such as Spark, BigQuery, Kafka, and designing and modeling both logical and physical data models, with SQL and NoSQL experienceExperience with Terraform, strong knowledge and experience of at least one cloud platform (AWS, CGP, etc.), configuring and managing cloud networking, cloud database management, and hands-on experience managing and using ELK/OpenSearch clustersWe offerCompetitive compensation depending on experience and skillsVariety of projects within one companyBeing a part of a project following engineering excellence standardsIndividual career path and professional growth opportunitiesInternal events and communitiesFlexible work hours