Espeo Software - Senior Fullstack Developer - Freelancer
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Senior Fullstack Developer - Freelancer

  • Remote
    • Poznań, Wielkopolskie, Poland
  • Delivery-Freelance

Job description

We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 17 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation.

Job requirements

Senior Fullstack Developer - Freelancer

SKILLS: Node.js | Angular | Auth0 |

B2B: PLN 140 - 160 / Hour 💰

LOCATION: REMOTE (POLAND)

START DATE: 01.12.2025

DURATION: 1 month

Key Duties and Requirements: A Roadmap to Your Professional Success 🚀

Scope of responsibilities:

  • Design, build, and maintain scalable backend services using Node.js

  • Develop APIs and microservices to support frontend and mobile applications

  • Ensure high performance and responsiveness of backend systems

  • Design and Implement Frontend features using Angular and ensure high performance, responsiveness, and a great user experience.

  • Auth0: Hands-on experience integrating and configuring identity and access management (IdM) in Node.js / Angular applications.

  • Implement and manage API key security mechanisms for third-party service integration and internal service-to-service communication.

  • Collaborate with product owners and other developers to define, design, and ship new features.

  • Conduct code reviews to maintain high standards of code quality, performance, and security across the stack.

  • Maintain high standards for documentation, security, and deployment processes

Here’s a set of skills we require:

  • 5+ years of professional development experience, with a strong focus on Fullstack roles.

  • Expert proficiency in Node.js for building scalable backend services (RESTful APIs).

  • Proficiency in Angular for complex, single-page application development.

  • Mandatory hands-on experience with Auth0 for implementing secure authentication and authorization

  • Architecture: Ability to work with existing codebases, suggest improvements, and maintain clean code standards


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