Senior Fullstack Developer at 39d5c23b-0fcd-48c2-93a0-f957c9e1d465:19000101_000001 – Lithuania | Jobyssey

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 @ 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]

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