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Senior IoT Backend Engineer at Weekday AI. This role is for one of the Weekday's clients. Salary range: Rs 1500000 - Rs 2500000 (ie INR 15-25 LPA). Min Experience: 5 years. Location: Remote (India). JobType: full-time. We are seeking a seasoned . Senior IoT Backend Engineer. to design, develop, and maintain backend applications and cloud services, with a strong focus on system security, scalability, and seamless integration with IoT environments. The ideal candidate will bring hands-on experience in IoT development, backend engineering, and secure cloud architecture—ensuring data from connected devices is processed efficiently and safely.. Key Responsibilities:. Backend Development. . Design, develop, and maintain scalable backend systems and APIs for public, private, and partner-facing use cases using modern best practices. . . Build systems capable of processing millions of concurrent data points using both SQL and NoSQL databases. . . Develop IoT-specific systems for tasks such as monitoring device data flow, firmware over-the-air (OTA) updates, and bidirectional communication with devices. . . Cloud Infrastructure Management. . Architect and manage secure and scalable AWS cloud infrastructure with services such as Lambda, EC2, API Gateway, S3, RDS, DynamoDB, IoT Core, IoT Events, and MSK. . . Develop microservices-based systems with plug-and-play architecture for modular deployment. . . Cloud Security Implementation. . Implement strict cloud security policies, including IAM, least privilege access, and MFA. . . Utilize AWS tools like Security Hub, GuardDuty, and CloudTrail to detect and mitigate security risks. . . Manage secure data storage, encryption (in-transit and at-rest), and regular backups. . . Conduct vulnerability assessments and penetration testing for cloud systems and APIs. . . API Security & Integrations. . Build secure APIs with strong authentication and authorization frameworks (OAuth2, JWT, API keys). . . Harden APIs against threats like replay attacks, brute-force attempts, and implement rate-limiting. . . Develop secure integrations with third-party platforms ensuring compliance and data protection. . . Monitoring & Incident Response. . Establish real-time monitoring and alert systems using AWS CloudWatch, ELK, or Splunk. . . Develop and execute incident response plans for rapid detection and resolution of security events. . . Support internal and external stakeholders with technical troubleshooting and infrastructure queries. . . Qualifications & Experience:. . Degree in Computer Science, Engineering, or a related field. . . Strong backend development skills (Python, Node.js, or Java) with secure coding practices. . . Proven experience in building IoT solutions and working with protocols like MQTT. . . Deep expertise in AWS cloud services, VPC, and infrastructure security tools. . . Solid understanding of API security protocols and integration patterns. . . Experience with Docker/Kubernetes and container security models. . . Hands-on experience with encryption, firewalls, and secure networking. . . Familiarity with DevSecOps practices and secure CI/CD pipeline integration. . . Effective communicator with both technical and non-technical teams. . . Preferred Attributes:. . Passionate about impactful, socially-driven technology solutions. . . Proactive, detail-oriented, and thrives in fast-paced, distributed work environments. . . Open source contributions or community involvement is a plus. . . Strong verbal and written communication skills. . . Demonstrates initiative and a collaborative mindset. . . Skills:. IAM • Backend Development • API Security • AWS Infrastructure • IoT Systems • MQTT • Microservices • DevSecOps • Python/Node.js/Java • Docker/Kubernetes. Company Location: India.