About the role
About Apexon
Apexon is an AI-first technology services firm that engineers Intelligent Enterprises. Our interconnected disciplines of Domain & Strategy, Cognitive Architecture, and Harness Engineering guide every engagement, helping clients deliver meaningful business outcomes while applying collective intelligence to confidently scale from early AI strategies to enterprise-grade production systems. For over three decades, we have helped organizations by leveraging our deep and practical expertise in Artificial Intelligence, Data & Analytics, Digital Engineering, and Experience, combined with our industry knowledge across Banking & Financial Services, Healthcare and Life Sciences to create lasting business value. Apexon is backed by Goldman Sachs Asset Management and Everstone Capital..
We enable #HumanFirstDigital
Role Summary
Job Title: Senior .NET Developer
Specialisation: Backend and AWS Cloud Development
Experience: 7+ years
Employment Type: Full-time
Locations: Pune, Hyderabad, Bengaluru, Chennai, Mumbai, or Ahmedabad
We are seeking an experienced Senior .NET Developer to design, develop, and support scalable enterprise applications and distributed systems using .NET, C#, AWS, SQL Server, and PostgreSQL.
This is primarily a backend engineering role, covering REST APIs, microservices, event-driven systems, relational databases, and cloud-native AWS solutions. The successful candidate will contribute to application architecture, production troubleshooting, performance optimization, observability, and technical improvements while collaborating with Product Managers, Architects, QA, and DevOps teams.
Key Responsibilities
Design, develop, test, and maintain scalable enterprise applications using C#, .NET Core, and .NET 8 or later.
Build secure and reliable RESTful APIs, microservices, and event-driven application components.
Develop cloud-native solutions using AWS services such as Lambda, ECS, EKS, S3, SQS, SNS, API Gateway, CloudWatch, RDS, IAM, and DynamoDB.
Design scalable, highly available, observable, and secure application architectures.
Design and optimize relational databases using SQL Server and PostgreSQL.
Develop efficient SQL queries, data-access components, database schemas, indexes, partitions, and migration scripts.
Apply object-oriented design, SOLID principles, and appropriate software-design patterns.
Implement asynchronous processing, dependency injection, multithreading, and distributed-system patterns.
Troubleshoot production issues, perform root-cause analysis, and implement sustainable corrective actions.
Improve application performance, reliability, maintainability, security, and operational observability.
Implement coding, testing, security, logging, and performance-engineering best practices.
Build and maintain unit and integration tests to improve application quality and reduce regression risk.
Participate in code reviews, technical-design discussions, estimation, and architecture decisions.
Collaborate with Product Managers, Architects, QA engineers, DevOps engineers, and other delivery stakeholders.
Mentor junior developers and provide technical guidance on development standards and engineering practices.
Support CI/CD pipelines, deployment automation, and production-release activities.
Work independently, take ownership of assigned technical initiatives, and deliver within an Agile or Scrum environment.
Mandatory Skills Required
Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
At least 7 years of software-development experience, with substantial hands-on experience in backend application development.
Strong expertise in C# and modern .NET, including .NET Core and .NET 8 or later.
Experience developing RESTful APIs, microservices, and distributed application components.
Experience designing or implementing event-driven architectures.
Strong understanding of object-oriented programming, SOLID principles, and common software-design patterns.
Practical experience with dependency injection, asynchronous programming, and multithreading.
Hands-on experience with AWS services, including: Lambda, ECS or EKS, S3, SQS and SNS, API Gateway, CloudWatch, Amazon RDS, Identity and Access Management and DynamoDB
Experience developing scalable, secure, and highly available cloud-native applications.
Experience with CI/CD pipelines and deployment automation.
Strong SQL-development and query-optimization skills.
Strong experience with SQL Server and PostgreSQL.
PostgreSQL experience covering database design, indexing, partitioning, and performance tuning.
Experience with relational data modeling and database-migration strategies.
Experience with Git-based source control and collaborative development workflows.
Hands-on experience with unit testing and integration testing.
Strong debugging, production-support, root-cause analysis, and application-performance tuning skills.
Experience working in Agile or Scrum delivery environments.
Ability to participate in technical discussions and mentor junior developers.
Strong written and verbal communication skills, with effective stakeholder-management capabilities.
Ability to work independently and take ownership of technical initiatives.
Nice to Have Skills
Experience with Amazon OpenSearch Service or Elasticsearch.
Experience developing search-driven applications.
Knowledge of event-streaming platforms such as Apache Kafka.
Experience containerizing applications using Docker.
Experience deploying or operating containerised applications using Kubernetes.
Exposure to large-scale distributed systems.
Experience developing high-volume data-processing platforms.
Familiarity with advanced application monitoring, distributed tracing, centralised logging, and operational observability.
Our Commitment to Diversity & Inclusion
Did you know that Apexon has been Certified™ by Great Place To Work®, the global authority on workplace culture, in each of the four regions in which it operates: USA for the seventh time in 2026, India for the tenth consecutive time in 2026, the UK for the fourth time in 2026, and Mexico for the second time in 2026. Apexon is committed to being an equal opportunity employer and promoting diversity in the workplace. We take affirmative action to ensure equal employment opportunity for all qualified individuals. Apexon strictly prohibits discrimination and harassment of any kind and provides equal employment opportunities to employees and applicants without regard to gender, race, color, ethnicity or national origin, age, disability, religion, sexual orientation, gender identity or expression, veteran status, or any other applicable characteristics protected by law. You can read about our Job Applicant Privacy policy here: Job Applicant Privacy Policy on .
Our Commitment to Environment
Actively contribute to Apexon's commitment to environmental responsibility by following sustainable practices and supporting ESG initiatives.
Our Perks and Benefits
Our benefits and rewards program has been thoughtfully designed to recognize your skills and contributions, elevate your learning/upskilling experience, and provide care and support for you and your loved ones. As an Apexon Associate, you get continuous skill-based development, opportunities for career advancement, and access to comprehensive health and well-being benefits and assistance.
We also offer:
Group Health Insurance covering family of 4
Term Insurance and Accident Insurance
Paid Holidays & Earned Leaves
Paid Parental Leave
Learning & Career Development
Employee Wellness
Recruitment Fraud Notice
Note: Apexon does not request or accept any fees or payments from candidates at any stage of recruitment, including interviews, offer letters or training. Any such payment request is unauthorised and is not made on behalf of Apexon. Candidates are advised to verify recruitment communications through Apexon’s office