Be our next: Senior iOS Developer

  • Full-time

  • Permanent

  • Madrid

Ventura24 SLU belongs to the European multinational ZEAL ( Ventura24 SLU, a leading Company in the management of Lotteries through Internet, has a contract with ONCE to provide Marketing Services to manage and maximize the sales and results of the JuegosONCE website ( as well as other digital channels (i.e. mobile, apps).

ZEAL Network SE is an international, listed group of companies that has been creating exciting and entertaining lottery experiences for over 20 years. In Germany, we are the largest provider of online lotteries through our brands, LOTTO24 and Tipp24. In Spain we work with the second largest national lottery, ONCE. Through ZEAL Ventures, we are involved in exciting e-commerce start-ups such as Omaze and DAYMADE. We have 150+ employees from various countries who act independently and think in a visionary way. Our corporate culture is characterized by team spirit, empowerment, and high ambition. Together we have a clear goal: to encourage people to dream.

We are currently looking for a talented, driven, and well-organized iOS Developer to join our newly created apps development team, in our efforts on providing world-class, unforgettable digital experience to the customers of the soon-to-be-launched new JuegosONCE app.

You will be part of a mixed team (Android, iOS) and gain experiences in all fields.We are highly user-centric & believe in agile methodologies and therefore you will be working together with JuegosONCE app Product Manager. Also, as part of ZEAL’s JuegosONCE team you will be part of a talented, fun, group of around 20 professionals looking forward to bringing the best experience to JuegosONCE customers while maximizing sales.

We are looking for people who are interested in turning the ideas of our clients into innovative solutions. We offer a challenging and interesting job environment, with a friendly and open work atmosphere in Madrid.

Justine Neumann - Zeal

Justine Neumann

Junior Recruiting Manager

Sounds interesting?

Great! We're looking forward to receiving your online application.

Apply now

What we offer

  • Remote work from home, except for client or internal company meetings /events that require physical attendance
  • The opportunity to work for a successful international e-commerce company with an open and proactive culture.
  • The opportunity to work closely with different areas in ONCE.
  • The opportunity to leave your mark in one of the most relevant world lottery operators while supporting a good cause that helps thousands of impaired people.
  • A role in an open and friendly work environment with a level of responsibility.

Your tasks

  • This will include collaborating with Product Owner and UX Design colleagues to deliver inspirational games apps and continue to optimize their performance post release.
  • A key part of this role will be to develop and produce functional solutions with quality designs and code in accordance with architecture design standards, code standards and environment configuration management.
  • Being responsible for the whole product lifecycle (development, testing deployment, operations, and monitoring), together with your team.
  • Perform code-reviews and pair programming to share your knowledge.

What you offer us

  • +4 years’ experience in iOS development (Xcode, ObjectiveC, Swift, JSON, REST).
  • Experience using MVVM and familiarity with other iOS Architecture patterns.
  • A good understanding of iOS UX/UI guidelines/best practices and the ability to engage with the creative team to deliver pragmatic solutions, balancing design, quality and velocity.
  • Experience writing apps using SwiftUI and Combine.
  • Flair for clean code, testability, reusability, and readability (SOLID, TDD).
  • Experience of writing User Interface Tests using XCUITests.
  • Solid understanding and practical knowledge of the full mobile development and application lifecycle.
  • Experience with mobile development issues related to performance optimisation, caching, security and native components / SDK's.
  • Working knowledge of the general mobile landscape, architectures, trends and emerging technologies.
  • Excellent communication skills across all levels of the organisation and external 3rd parties / suppliers.
  • Enjoy working within self-organized teams with an eagerness for responsibility.
  • Excellent communication skills and proficient in English and Spanish.

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Senior iOS Developer

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Feel free to contact our Recruiting Manager.

Justine Neumann - Zeal

Justine Neumann

Junior Recruiting Manager