Senior Node.js Developer

18 900 - 23 100 PLNNet per month - B2B

Senior Node.js Developer

JavaScript

Wiertnicza 166, Warszawa +1 Location

ITDS

18 900 - 23 100 PLN
Net per month - B2B
Full-time
B2B
Senior
Remote

Tech stack

    Node.js

    advanced

    nest js

    advanced

    Fastify

    advanced

    AWS S3 bucket

    advanced

    MongoDB

    regular

    React

    nice to have

Job description

Shape the Future of Digital Advertising as a Senior Node.js Developer!


Krakow/Warsaw-based opportunity with almost fully remote work model (1 day in the office/month).


As a Node.js Developer you'll be working for our client, a prominent player in the media industry. You will join the team and take responsibility for the development and maintenance of backend applications (Node.js, NestJS) in the field of digital advertising serving technologies and identity management, built in a distributed (non-monolithic) architecture. We are seeking someone actively engaged in improving the quality of solutions and processes, including the development of automated tests and monitoring tools, as well as co-creating new directions for the development of the advertising ecosystem (R&D).


Your main responsibilities:


  • Develop and maintain backend applications (Node.js, NestJS) for digital advertising serving and identity technologies.

  • Develop and maintain automated tests (tools and test cases).

  • Develop and maintain monitoring solutions.

  • Actively participate in creating new solutions and development directions for the advertising ecosystem (R&D).

  • Participate in the full software development lifecycle: from requirements clarification, through design, implementation, deployment, to maintenance and monitoring.


You're ideal for this role if you have:


  • Higher education, preferably in Computer Science.

  • Minimum 5 years of programming experience in IT projects.

  • At least 3 years of experience in Node.js project development.

  • Experience in application design, performance optimization, and monitoring.

  • Ability to decompose tasks effectively.

  • Very good knowledge of:

    • Node.js, TypeScript

    • Frameworks such as NestJS, Fastify

    • Databases: MongoDB, Redis

    • AWS S3 bucket

    • Object-oriented and functional programming in JavaScript

    • Event-driven development

    • Design patterns and best practices

    • Version control systems: GIT, GitHub

    • Babel tools

  • Willingness for active professional growth

  • English language skills sufficient for reading/writing technical documentation


Nice to have:


  • Knowledge of digital/programmatic advertising

  • Familiarity with React.js and NoSQL databases

  • Comfortable working in Unix environments, including writing bash scripts

  • Experience with Jenkins

  • Familiarity with Agile / Scrum / KANBAN methodologies

  • Experience with Datadog

  • Familiarity with test frameworks like Jest, Jasmine, Karma, Cypress

  • Ability to write unit, functional, and integration tests


We offer you:

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes:

 

  • Stable and long-term cooperation with very good conditions 

  • Enhance your skills and develop your expertise in the financial industry

  • Work on the most strategic projects available in the market

  • Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years

  • Participate in Social Events, training, and work in an international environment

  • Access to attractive Medical Package

  • Access to Multisport Program

  • Access to Pluralsight

  • Flexible hours & remote work

Published: 16.08.2025
Office location