Backend Developer

20 hours ago

Doha, Baladīyat ad Dawḩah, Qatar DroobiSmit Full time

About Lillia:

Lillia is a Digital Health company based in India and the Middle East, collaborating with healthcare partners—including clinic chains specializing in Ayurveda, Allopathy, and Homeopathy—to empower individuals to enhance their metabolic health.

Founded in 2018, Lillia leverages an innovative app-based solution that follows a three-member coaching model and clinical protocol to drive lasting behavioral change.

We are revolutionizing the way people manage their health and well-being by applying the principles of Behavioral Science, built on advanced technology to provide a seamless user experience.

Job Description:

We are looking for an experienced Backend Java Developer with 2–5 years of hands-on experience in building scalable and secure backend systems. The ideal candidate will be responsible for developing and maintaining RESTful APIs, integrating backend services with frontend applications, and ensuring system reliability and performance.

You will collaborate with cross-functional teams including frontend, data, and AI teams to deliver innovative digital health solutions. Experience or interest in agentic or multi-agent systems (Python-based) is a strong plus.

Key Responsibilities:

  • Design, develop, and maintain efficient, reusable, and reliable Java code.
  • Build and optimize REST APIs for mobile and web platforms.
  • Integrate frontend applications (React Native / Web) with backend services.
  • Ensure application performance, scalability, and security.
  • Identify bottlenecks, debug issues, and implement effective fixes.
  • Implement authentication, authorization, and data protection measures.
  • Design and manage data storage solutions using SQL and NoSQL databases.
  • Collaborate with AI and data science teams on agentic/multi-agent modules (Python).
  • Participate in code reviews, maintain code quality, and follow best practices.
  • Work closely with DevOps teams on CI/CD, deployment, and cloud infrastructure.

Technology Stack:

  • Backend: Java, Spring Boot
  • Database: MongoDB, SQL
  • Cloud & DevOps: GCP, Docker, Kubernetes
  • Others: Microservices, REST APIs, JWT/OAuth2
  • Plus (Preferred): Python exposure, especially in multi-agent or AI-driven systems

Qualification & Experience:

  • 2–5 years of backend development experience in Java/Spring Boot.
  • Bachelor's or Master's degree in Computer Science or a related field.
  • Strong understanding of REST architecture, microservices, and data design.
  • Experience with GCP/AWS/Azure environments is a plus.
  • Familiarity with Python-based agentic systems is an advantage.
  • Prior experience in a startup or fast-paced tech environment is preferred.
  • Passionate about writing clean, maintainable code and contributing to product innovation.

Job Type: Full-time

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