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OutSystems Developer (f/m/x)
  • Warsaw
OutSystems Developer (f/m/x)
Warszawa, Warsaw, Masovian Voivodeship, Polska
Sii Sp. z o.o.
7. 2. 2026
Informacje o stanowisku

OutSystems Developer (f/m/x)

Miejsce pracy: Warszawa

Technologies we use

Expected

  • Outsystems
  • OutSystems UI
  • JavaScript
  • HTML
  • CSS
  • PL/SQL

About the project

We are seeking an OutSystems Developer to join agile squads working on the client’s core leasing platform, delivering scalable and secure enterprise-grade applications. This role involves end-to-end software design, development, testing, and support, with a strong focus on performance, maintainability, and user experience.

This role requires working from the client’s office 2 days a week.

Your responsibilities

  • Designing and developing scalable and secure software solutions in OutSystems
  • Clarifying requirements and collaborating with stakeholders to define business needs
  • Implementing and optimizing code to meet development and security standards
  • Creating and executing test strategies and supporting deployments
  • Maintaining documentation and integrating software packages
  • Participating in developer networks and sharing best practices
  • Engaging in continuous training on emerging technologies

Our requirements

  • Minimum 5 years of experience in OutSystems development
  • Strong knowledge of OutSystems frameworks, UI, and integrations (XML, JSON)
  • Proficiency in JavaScript, HTML, CSS, PL/SQL
  • Experience with Jira, Confluence, and SharePoint
  • At least 4 OutSystems certifications
  • Fluency in English and Polish
  • Residing in Poland required

What we offer

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

Recruitment stages

  • Send your CV
  • Talk to us about your expectations
  • Learn more about our projects and choose the best
  • Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.

Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

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