Back End Developer

WAISL Limited
Greater Bengaluru Area

Role Overview

We are seeking a seasoned Backend Developer with strong experience in designing, developing, and maintaining scalable backend applications and services. The role requires strong programming fundamentals, hands-on experience with modern backend technologies, API development, databases, microservices, and cloud environments.

Experience or exposure to data engineering is a significant advantage, as the role involves working with data-centric systems, analytics platforms, and data-intensive applications.

Key Responsibilities

  • Design, develop, and maintain scalable backend services and applications.
  • Develop and integrate RESTful APIs and web services for internal and external applications.
  • Build and maintain microservices-based architectures and ensure scalability, reliability, and performance.
  • Work with relational and NoSQL databases, including database design, queries, optimization, and performance tuning.
  • Implement secure, reliable, and high-performance backend solutions.
  • Integrate applications with third-party systems, services, and APIs.
  • Troubleshoot production issues, perform root-cause analysis, and implement effective solutions.
  • Write clean, maintainable, and well-tested code following engineering best practices.
  • Participate in code reviews, technical discussions, and architecture/design decisions.
  • Collaborate with Product, QA, DevOps, Data Engineering, and other technical teams throughout the development lifecycle.
  • Contribute to CI/CD pipelines, deployment processes, and application monitoring.
  • Maintain clear technical documentation for backend services and APIs.Required Skills
  • Strong hands-on backend development experience using Java, Python, or Node.js.
  • Strong understanding of object-oriented programming, data structures, algorithms, and software design principles.
  • Hands-on experience with REST APIs, microservices, and web services.
  • Strong experience with relational databases such as PostgreSQL, MySQL, or Oracle.
  • Good understanding of NoSQL databases such as MongoDB, Redis, or similar technologies.
  • Experience with Git, CI/CD pipelines, and DevOps practices.
  • Hands-on exposure to Docker and Kubernetes.
  • Experience working with cloud platforms such as AWS, Azure, or GCP.
  • Strong understanding of application scalability, performance optimization, security, and system design.
  • Experience working in Agile/Scrum environments.Good-to-Have – Data Engineering Exposure
  • Experience or exposure to ETL/data pipelines.
  • Familiarity with Kafka, batch processing, or stream processing.
  • Understanding of data lakes and data warehouses, including Snowflake or open-source platforms.
  • Experience working with real-time data flows and event-driven architectures.
  • Basic understanding of data modelling and analytics platforms.
  • Experience integrating backend services with data/analytics applications.Qualifications
  • Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
  • 6+ years of professional experience in backend development.
  • Proven experience building and maintaining scalable, production-grade backend applications and services.
  • Experience working with large-scale systems and distributed/microservices architectures.
  • Strong problem-solving and analytical skills.

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