Software Engineer – Mini App Full Stack Developer

About the role

Our client in the telecommunications sector is looking for a Software Engineer specialized in Mini App development on a 4‑month contract. You will own the full lifecycle of Fintech Crypto Mini Apps, delivering secure, scalable and reusable solutions that integrate with core platform services.

Key responsibilities

• Design, develop, test, deploy and support Mini Apps within the Mini App Framework.
• Ensure strict separation between presentation and business logic while maintaining high security standards.
• Integrate Mini Apps with Fintech platform services, governed APIs and event‑driven architectures.
• Collaborate with API, security and DevOps teams to implement OAuth2/OpenID Connect, SSO and IAM flows.
• Maintain code quality using Git and participate in CI/CD pipelines.

Required profile

• 5+ years of professional software development experience.
• Strong proficiency in JavaScript and TypeScript.
• Hands‑on experience with Mini Apps, Mini Programs, Super Apps or comparable mobile/web frameworks.
• Deep understanding of REST APIs, OAuth2, SSO, and micro‑services patterns.
• Familiarity with event‑driven platforms, asynchronous processing and secure coding practices.

Required skills

• JavaScript
• TypeScript
• React
• React Native
• Node.js
• RESTful APIs
• JSON
• OAuth2 / OpenID Connect
• Kafka (or similar event‑driven tech)
• CI/CD pipelines
• Docker
• Kubernetes / OpenShift
• Git