Full Stack Developer (Mobile & Bavkend Integration)

Swediumglobal; Malmö kommun; On-site; SEK 446,400 - 669,600; Full time

Job summary

A technology solutions provider is seeking a Full Stack Developer specializing in mobile and backend integration. In this role, you will contribute to creating a secure mobile app for payments while collaborating with cross-functional teams. The ideal candidate has experience in native mobile development, secure coding practices, and regulatory compliance. This position is based in Malmö, Sweden.

Qualifications

• Hands-on experience with secure handling of sensitive data.
• Ability to design secure, modular SDK components.
• Experience with automated testing and threat modelling.

Responsibilities

• Develop native Android and iOS components and backend integration points.
• Implement secure, resilient payment capabilities with financial platforms.
• Collaborate closely with team members and maintain secure coding practices.

Skills

Native mobile development for Android and iOS (Kotlin/Swift)

Proficiency in proximity communication technologies (NFC, Bluetooth, QR code)

Strong secure coding practices

Excellent collaboration and communication skills

Job description

Full Stack Developer (Mobile & Bavkend Integration)

Swedium Global is looking for Full Stack Developer (Mobile & Backend Integration)

Overview

Join Ericsson’s initiative for resilient payments as a Full Stack Developer. You’ll collaborate with a cross-functional team to design and implement a highly secure mobile app SDK for enabling resilient payments along with a reference app using the SDK. You’ll work closely with product, architecture, and security specialists to deliver a robust, scalable, and secure solution.

Responsibilities

• Develop native Android and iOS components (Kotlin/Swift) and backend integration points for proximity communication, payment flows, and secure transaction handling.
• Implement secure, resilient payment capabilities and seamless integration with financial platforms.
• Proactively participate in secure code review, remediation, threat modelling, and security testing across the development lifecycle.
• Design and implement developer friendly APIs and modular SDK components with strong error handling, observability, and comprehensive validation through unit tests and functional tests
• Collaborate closely with Ericsson team members, including architects, product owners, and security specialists; contribute to knowledge transfer and sustainable maintenance.
• Ensure compliance with relevant standards and regulations (e.g., OWASP MASVS, PCI, PSD2, EMV, GDPR) and maintain secure coding practices.
• Deliver in an agile environment with regular sprint demos and frequent progress updates.

Required Competences

• Native mobile development for Android and iOS (Kotlin/Swift); experience with optional cross-platform options (React Native, Flutter) when appropriate.
• Proficiency in proximity communication technologies (NFC, Bluetooth, QR code) and device-to-device secure protocols.
• Hands-on experience with secure handling of sensitive data, and resilient transaction workflows.
• Strong secure coding practices, encryption, secure storage, and familiarity with Secure Elements/TEE.
• Ability to design and implement secure, modular SDK components and developer-friendly APIs.
• Knowledge of and experience with regulatory/compliance domains relevant to financial services (PCI, PSD2, EMV, GDPR).
• Experience with automated testing (unit, integration, security testing) and threat modelling.
• Excellent collaboration and communication skills; fluent in English (Swedish a plus).