Sr. Software Engineer

Otelier; India; Hybrid; INR 2,873,563 - 4,789,272; Full time

Job summary

Otelier is looking for a backend developer proficient in C#.NET and ASP.NET. You will design, develop, and maintain backend services and APIs, ensuring performance and security while collaborating with distributed teams.

The ideal candidate has 4-7 years of experience using modern technologies including SQL Server and PostgreSQL, with exposure to cloud solutions such as Snowflake. This position requires strong problem-solving skills and the ability to work in a dynamic team environment.

Qualifications

• 4-7 years of hands-on experience in C#.NET and ASP.NET.
• Strong experience with SQL Server and PostgreSQL.
• Exposure to cloud data warehouses like Snowflake is a plus.
• Excellent understanding of RESTful API and microservices.

Responsibilities

• Design, develop, and maintain robust backend services.
• Implement data access layers ensuring performance and security.
• Collaborate closely with cross-functional teams.
• Mentor junior engineers as needed.

Skills

C#.NET

ASP.NET (MVC/Web API/Core)

SQL Server

PostgreSQL

RESTful APIs

Microservices architecture

Unit testing

Integration testing

Problem-solving

Communication

Education

Bachelor’s degree in Computer Science or related field

Tools

Snowflake

AWS Services

Azure DevOps

React.js

Angular

Job description

Responsibilities

• Design, develop, and maintain robust backend services and APIs using C#.NET and ASP.NET (MVC/Web API/Core).
• Implement and optimize data access layers using SQL Server, PostgreSQL, and Snowflake, ensuring reliability, performance, and security.
• Build and enhance responsive, user-friendly web interfaces using React.js or Angular (bonus).
• Design, develop, and integrate RESTful and microservices‑based architectures with a focus on scalability, observability, and fault tolerance.
• Write clean, maintainable, and testable code following SOLID principles, design patterns, and best practices.
• Collaborate closely with cross‑functional and cross‑geography teams (US, Sri Lanka, India) including Product, QA, Data, and Integrations teams.
• Actively participate in daily stand‑ups, sprint planning, grooming, and retrospectives, ensuring alignment across time zones.
• Communicate effectively with stakeholders, including US‑based product and customer‑facing teams, to clarify requirements and provide timely updates.
• Participate in code reviews, provide constructive feedback, and mentor junior engineers (for Senior role).
• Troubleshoot production issues, perform root‑cause analysis, and contribute to continuous performance tuning and optimization.
• Take ownership of features end‑to‑end, including design, development, testing, deployment, and post‑release monitoring.
• Contribute to improving team processes, documentation, and engineering practices in a distributed setup.
• Stay updated with emerging .NET, cloud, and front‑end technologies and demonstrate a continuous learning mindset.

Requirements

• Strong hands‑on experience 4–7 years in C#.NET and ASP.NET (MVC/Web API/Core) for building enterprise web applications and services.
• Well versed with coding in AI based IDEs like Cursor or Claude Code.
• Solid experience with relational databases such as SQL Server and PostgreSQL, including schema design, complex queries, indexing, and performance tuning.
• Exposure to or hands‑on experience with Snowflake or other cloud data warehouses is highly desirable.
• Good understanding of RESTful APIs, microservices architecture, and application performance tuning.
• Experience with unit testing and integration testing frameworks in the .NET ecosystem.
• Strong problem‑solving skills with an ownership mindset and accountability for deliverables.
• Excellent communication skills, with the ability to work effectively in a distributed, cross‑timezone team environment.
• Comfortable working with teams and stakeholders in US and Sri Lanka time zones, with flexibility for overlap hours when required.
• Bachelor’s degree in Computer Science, Engineering, or a related field.

Bonus Skills (Nice to Have)

• Experience with Apache Kafka or other event streaming platforms.
• Practical exposure to AWS services (e.g., ECS/EKS, Lambda, RDS, S3) or equivalent cloud platforms.
• Experience with Azure DevOps, Git‑based CI/CD pipelines, and automated deployments.
• Front‑end development experience with React.js or Angular, including TypeScript and modern build tooling.
• Experience working in data‑intensive or integration‑heavy systems.