Senior Fullstack Developer (Javascript + )
Senior Fullstack Developer (Javascript + )
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Job Description
Established in 1997 Softeq was built from the ground up to specialize in new product development and R&D tackling the most difficult problems in the tech sphere. Now weve expanded to offer early-stage innovation and ideation plus digital transformation business consulting. Our superpower is to deliver all of this under one roof on a global scale. So lets get started and build a better future together!
Locations/type of contract:
Lithuania (employment contract hybrid/remote)
OR
Poland/other EU country (B2B contract directly with Softeq fully remote)
Responsibilities
Frontend (React):
Build modern responsive and accessible UI components using React /
Implement clean modular front-end architecture using hooks and component libraries
Optimize rendering performance and frontend UX across devices
Collaborate with designers to turn UI/UX into functional interfaces
Backend ():
Design and implement RESTful or GraphQL APIs using / Express /
Build scalable microservices with proper separation of concerns
Work with relational and NoSQL databases (PostgreSQL MongoDB etc.)
Implement authentication authorization and role-based access control
Integrate with third-party APIs and services (payments notifications etc.)
Ensure robust error handling logging and testing
Requirements
5 years of experience in fullstack web development
Deep knowledge of JavaScript/TypeScript across both frontend and backend
Proficiency with React (or ) and related frontend tooling (Webpack Vite etc.)
Strong backend skills in and one or more frameworks (Express etc.)
Solid understanding of database design and query optimization (PostgreSQL MySQL MongoDB)
Experience with API design authentication flows and JWT/OAuth2
Experience with Git CI/CD and automated testing
Strong architectural and problem-solving skills
Ability to communicate clearly collaborate cross-functionally and mentor others
Very good English language written and verbal communication skills (min. B2 level)
Nice to have
Experience with Cloud platforms (AWS GCP Azure)
Experience with Docker containerized deployments or Kubernetes
Familiarity with serverless architecture (AWS Lambda Firebase Functions)
Exposure to microfrontend or monorepo setups (Turborepo Nx)
Familiarity with Agile processes Jira Scrum/Kanban boards
Employment Type
Full Time
