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Software Backend Developer (.Net)

Net

Software Backend Developer (.Net)

Net

Al. Jerozolimskie 180, Warszawa

Goelett

Full-time
Any
Mid
Hybrid

Tech stack

    English

    C1

    Polish

    C1

    .NET C#

    advanced

    Azure

    advanced

    SQL

    advanced

    NoSQL

    advanced

    Angular

    nice to have

    AngularJS

    nice to have

Job description

In Goelett, we are an extraordinary mix of travel industry experts, product, and software engineers, developing a successful online booking tool for corporations and large organizations. Today, as a part of the sector leader S4BT Group, we support 500k+ business users making thousands of bookings a day.


We are seeking a .Net Developer (Back-end) who is keen on working within a product development team, has a background in system and integration analysis, and is ready to take on a dynamic career opportunity by driving requirements analysis, resolving system issues, and enhancing product functionalities!


What you will be doing:

  • Develop clean, scalable code using . C# / .Net in Micro-service Architecture & Cloud-native.

  • Test and deploy system and apps on Azure.

  • Monitor and optimize system performance, addressing any issues as they arise.

  • Serve as an expert on the system and provide technical support to other Internal teams.

  • Work in an agile squad with strong attention to user experience, quality assurance and continuous integration.

  • Build engineering practice by learning, sharing knowledge applying best practices.

  • Work on projects which directly impact the company’s growth.


What we're looking for:

  • 5+ years of professional experience in software development using C#, modern cloud architectures, and related technologies.

  • 3+ years of experience in Air development solutions.

  • Strong understanding of core software engineering principles and API design.

  • Proven expertise in implementing and managing high-performance, containerized applications at scale on Microsoft Azure.

  • Proficiency in designing and managing databases using SQL and NoSQL technologies.

  • In-depth knowledge of microservices, clean code, clean architecture, and SOLID principles.

  • Working knowledge of Angular/AngularJS is a plus.

  • Familiarity with AI tools to enhance development processes is an advantage.

  • Familiarity with Agile/Scrum methodologies and collaborative development practices.

  • Professional proficiency in English.


What we offer:

  • A truly global perspective – develop your international mindset by collaborating daily with colleagues from diverse cultures and backgrounds across the world.

  • Real impact – contribute to shaping the future of one of the most user-centric companies in the travel-tech industry. Your ideas and solutions will reach thousands of users globally.

  • Medical care – because your well-being matters.

  • Multisport card – keep your body as active as your mind.

  • Extra days off – celebrate your day with a paid day off for your birthday, and another to give back through volunteering.

  • Language courses – grow your communication skills and connect effortlessly in our multicultural environment.

  • Team integrations & fun events.

  • Lunch vouchers – enjoy your breaks with tasty meals on us.

Tech stack

    English

    C1

    Polish

    C1

    .NET C#

    advanced

    Azure

    advanced

    SQL

    advanced

    NoSQL

    advanced

    Angular

    nice to have

    AngularJS

    nice to have

Office location

Published: 21.10.2025

About the company

Goelett

Goelett’s team, composed of travel enthusiasts, product innovators, and tech experts, is committed to simplify and improve business travel with cutting-edge digital solutions. Join our dynamic team crafting a sophistica...

Company profile

Software Backend Developer (.Net)

Summary of the offer

Software Backend Developer (.Net)

Al. Jerozolimskie 180, Warszawa

Goelett

By applying, I consent to the processing of my personal data for the purpose of conducting the recruitment process. Informujemy, że administratorem danych jest Goelett Sp. z o.o. z siedzibą w Warszawie, ul. Aleje Jerozolimskie 180, (dalej jako "admin... MoreThis site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.