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If you like technology, innovative and different projects, your place is here, if you don't know us yet, we are a global technology provider that offers a complete portfolio of solutions in Payment, Mobile, Data and Identity Solutions. With 65 years of global experience, we have built a solid legacy that continues to grow. We are more than 4,000 employees in 16 countries, working to offer a more trustworthy and secure world. Our Mobile vertical offers solutions for the Telecommunications market, such as SIM Cards, eSIMs, Subscription Management, iSE, to secure connectivity and guarantee interoperability, connecting people, companies, and objects efficiently and with secure processes. We are looking for a Java Software Developer to join our R&D team and take part of development of our new cloud-native applications. You will work in an agile Scrum team using the newest technologies and developing our Telecom Solutions products managing SIM cards and eSIMs. Main products being Subscription Management for Consumer and IoT. Key Responsibilities: Design and Development of our Application Server Software, Backend and Frontend Participate in the full development lifecycle of each product, including analysis, design, development, testing and documentation Required Skills & Experience: Degree in Computer Science or Software Engineering Years of Java developer experience Experience with Spring Framework ( Spring Boot ) Experience with SQL databases in general (preferable postgreSQL ) Experience in developing REST API s Experience with modern JavaScript frameworks such as ReactJS will be a benefit Experience with JUnit and Integration testing will be a benefit Nice to Have: Experience with Docker / containerization Experience with cloud platforms , especially AWS Experience with Gitlab and CI/CD pipelines Experience in telecom / eSIM / IoT platforms Exposure to high-security environments (HSM, PKI, cryptography) Certifications (Appreciated): AWS certifications (e.g. AWS Certified Cloud Practitioner ) from Amazon Web Services What We Offer Opportunity to work on cutting-edge cloud-native telecom platforms Exposure to large-scale distributed systems and secure infrastructure Collaborative R&D environment with international teams Flexible working model Highly competitive package, commensurate with experience and expertise Our Culture Valid creates an inclusive environment for all employees. We are committed to building a company that reflects the diversity of the world that means fighting for equal opportunities based on a responsible and inclusive management of its human team with actions as non-discrimination concerning sex, age, race, sexual orientation, religion, education, social status, culture, or special needs such as illness or disability. ¡Join this great team and be part of our story!
Here's where they are and how to stand out in your next interview.
24.795Jobs
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That number includes positions in India (9,577), Poland (3,429), the United States (1,753), Singapore (787), and Brazil (779). If you're looking to move or work remotely, check which countries match your goals — then filter WorkMundi by location to see what's actually hiring near you.
Most developer ads you'll see are written in English: 18,397 of the 24,795. That doesn't tell you whether the job itself requires you to speak English or work in English daily, so read each posting carefully. Don't assume the language of the ad matches the language of the team.
The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.