Senior Full Stack Developer - API Platform

Sii Poland Poland
Visa Sponsorship
This Job is No Longer Active This position is no longer accepting applications
AI Summary

Join Sii Poland to develop an internal platform for a banking organization. Work with Backstage, React, and TypeScript. Collaborate with development, analysis, and operations teams.

Key Highlights
Develop and maintain front-end components in React + TypeScript
Implement logic on the Node.js side
Integrate catalog with key banking systems
Participate in design of new functionalities and platform enhancements
Implement API validation, reporting, and relationship management mechanisms
Technical Skills Required
React TypeScript Node.js YAML Backstage Git CI/CD tools
Benefits & Perks
Great Place to Work
Solid financial situation
Contracts with big brands
Internal trainings
Open and accessible management team
Profit sharing
Passion Sponsorship program
Regular integration events and trips
Comfortable and well-equipped offices
Medical care

Job Description


Join one of our teams and develop an internal platform - a central API directory in a banking organization.

The project is based on Backstage, an open-source developer portal developed in TypeScript and React.

The team's goal is to develop and extend the functionality of the platform to support not only developers, but also analytical and operational teams in their daily work with APIs.

Your tasks

  • Development and maintenance of front-end components in React + TypeScript
  • Implementation of logic on the Node.js side
  • Integration of catalog with key banking systems (product, billing, authorization)
  • Creation and maintenance of configuration in YAML
  • Participation in the design of new functionalities and platform enhancements
  • Implementing API validation, reporting and relationship management mechanisms
  • Collaborating with development, analysis and operations teams

Requirements

  • Minimum 4 years of commercial experience in React + TypeScript
  • Good knowledge of Node.js
  • Practical knowledge of YAML
  • Experience working with Backstage platform
  • Ability to work with Git repositories and CI/CD tools
  • Good knowledge of English to work freely in an international team
  • Residency in Poland and knowledge of Polish language required

Nice to have

  • Experience in system integrations
  • Familiarity with container environments (Docker, OpenShift)
  • Understanding of microservices architecture and API management

Job no. 251017-7UYSD

Benefits For You

Great Place to Work

Solid financial situation

Contracts with the biggest brands

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Profit sharing

Passion Sponsorship program

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Medical care

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