BENGALURU · FULLTIME
MODULE LEAD - Microservices
Happiest Minds Technologies
Bengaluru · onsite · Posted 63d ago
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Section · 01
About this role
We are looking for an experienced Senior Lead Developer to design, build, and scale robust backend systems. The ideal candidate has strong hands-on expertise in Java, Microservices architecture, AWS cloud services, and a proven ability to solve complex engineering problems. You will play a key role in both High-Level System Design (HLD) and Low-Level System Design (LLD), driving technical decisions that impact scalability, reliability, and performance.
Key Responsibilities- Design, develop, and maintain scalable backend services and microservices using Java (Spring Boot or similar frameworks).
- Own High-Level System Design (HLD) define system architecture, service boundaries, data flow, and integration patterns for new and existing systems.
- Own Low-Level System Design (LLD) translate architecture into detailed class diagrams, database schemas, API contracts, and design patterns.
- Architect and deploy cloud-native applications on AWS, leveraging services such as ECS (container orchestration) and S3 (object storage).
- Design and implement RESTful APIs and event-driven microservices with a focus on scalability, fault tolerance, and maintainability.
- Apply strong problem-solving skills to debug complex production issues, optimize performance, and improve system reliability.
- Collaborate with product managers, architects, and cross-functional engineering teams to translate business requirements into technical solutions.
- Write clean, well-tested, maintainable code and participate in code reviews.
- Participate in capacity planning, monitoring, and incident response for production systems.
- 7+ years of professional backend development experience
- Strong proficiency in Java and related frameworks (Spring / Spring Boot).
- Solid experience building and maintaining Microservices architectures.
- Hands-on experience with AWS cloud services, particularly:
- Amazon S3 (storage, lifecycle policies, access management)
- Amazon ECS (container orchestration, task/service definitions, scaling)
- Demonstrated ability in High-Level System Design (HLD) architecture, scalability, distributed systems concepts (load balancing, caching, message queues, etc.).
- Demonstrated ability in Low-Level System Design (LLD) OOP design principles, design patterns, database/schema design, API design.
- Strong problem-solving and analytical skills, with the ability to debug and optimize complex systems.
- Solid understanding of RESTful API design and integration patterns.
- Familiarity with CI/CD pipelines, and version control (Git).
- Experience with other AWS services (Lambda, SQS/SNS, RDS, CloudWatch, API Gateway).
- Exposure to Apache Camel EIP patten
- Experience working in Agile/Scrum environments.
- Prior experience mentoring engineers or leading small technical initiatives.
- Experience working on data pipelinedriven projects (e.g., ETL/ELT workflows, batch or streaming data processing, tools like Kafka, Spark, Airflow, AWS Glue, or Kinesis) is a plus.
Disclaimer: This job posting has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.
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Section · 02
Skills
Section · Company
About Happiest Minds Technologies

Happiest Minds Technologies
IT Services & Consulting
6.5k+
employees
2011
15 years old
Bangalore / Bengaluru, Karnataka
India
About
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1,441 reviews
Culture
3.4
Career growth
2.8
Work-life
3.6
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