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Posted 4w ago

Senior Fullstack Developer

@ Softeq
Vilnius or Warsaw
RemoteFull Time, Contract
Responsibilities:building UI, designing APIs, building microservices
Requirements Summary:5+ years fullstack experience with JavaScript/TypeScript, React/Next.js, Node.js (Express/Nest.js), relational and NoSQL databases, API design and authentication (JWT/OAuth2), Git, CI/CD, and strong communication skills.
Technical Tools Mentioned:React, Next.js, Node.js, Express, Nest.js, JavaScript, TypeScript, Webpack, Vite, PostgreSQL, MySQL, MongoDB, GraphQL, JWT, OAuth2, Git, CI/CD, AWS, GCP, Azure, Docker, Kubernetes, AWS Lambda, Firebase Functions, Turborepo, Nx, Jira
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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 we've 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 let's get started and build a better future together!

We’re looking for a Senior Fullstack Developer (React, Node.js) to join our team and contribute to its continued growth.

We are expecting to grow our team and begin new projects in the next 1-2 months. As such, we’re starting to accept resumes and process chosen candidates. Feel free to apply!

Location and type of contract:
  • Warsaw (Poland) - fully remote work (B2B contract);
  • Vilnius (Lithuania) - hybrid/remote (B2B or employment contract).

Responsibilities:
Frontend (React):
  • Build modern, responsive, and accessible UI components using React / Next.js;
  • 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 (Node.js):
  • Design and implement RESTful or GraphQL APIs using Node.js / Express / Nest.js;
  • 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 Next.js) and related frontend tooling (Webpack, Vite, etc.);
  • Strong backend skills in Node.js and one or more frameworks (Express, Nest.js, 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.
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.

    Softeq communicates only from @softeq.com email addresses. We never request payments or fees for any reason during hiring — including trainings or courses to be completed, equipment, onboarding, or background checks — and we will not ask for banking information, cryptocurrency or gift cards. If you receive a message from any other domain or requesting payment, do not respond and report it to [email protected]