Lead Engineer – C# .NET (AWS Cloud)

LSEG; Bengaluru; On-site; INR 2,600,000 - 4,200,000; Full time

Job summary

LSEG in Bengaluru, India seeks a Senior Software Engineer to design, build, and support backend systems using C# and .NET on AWS. You will contribute to secure, scalable cloud-native applications and collaborate with peers to improve performance and reliability.

The role emphasizes hands-on development, taking ownership of features, and mentoring team members within an Agile environment. Experience with container platforms and messaging services is valued.

Qualifications

• Experience building scalable backend systems in cloud environments.
• Strong C# and .NET (ASP.NET Core) skills and API design experience.
• Hands-on with AWS services (EC2/Lambda/ECS/S3) and container platforms.
• Prior experience with Docker and Kubernetes-based deployments.
• Proficient with GitLab or similar CI/CD tooling.
• Excellent debugging, problem-solving, and collaboration in Agile teams.

Responsibilities

• Lead design, develop, and maintain backend services using C# and .NET
• Build and integrate RESTful APIs with secure coding, testing, and deployment
• Develop and support applications in a fully AWS-based environment
• Work with container-based platforms (Kubernetes or ECS)
• Build event-driven solutions using messaging services
• Manage cloud storage for data and file management
• Contribute to CI/CD pipelines (GitLab)
• Guide technical decisions through code reviews and mentoring
• Take ownership of features to ensure quality, reliability, and performance

Skills

C# and .NET (ASP.NET Core)

APIs design & development

AWS Cloud services

Docker / containerization

GitLab CI/CD

Agile teamwork

Kubernetes / ECS

Tools

Aurora PostgreSQL

Kubernetes

Job description

Role Profile

As part of our engineering team, you will lead design, build, and improve backend services using C# and .NET technologies within a fully AWS-based cloud environment. This role focuses on hands‑on development, contributing to team decisions, and taking ownership of delivering reliable, scalable software. You will work independently while collaborating with peers to improve system performance, reliability, and modern cloud engineering practices.

Role Summary

We are looking for a Senior Software Engineer with strong C# and .NET expertise to build and support backend systems running on AWS cloud platforms. You will develop secure, scalable applications using Cloud services and contribute to improving system reliability, delivery speed, and team knowledge. This role plays an important part in building and operating cloud‑native, event‑driven applications at scale.

What You'll Be Doing

• Lead design, develop, and maintain backend services using C# and .NET
• Build and integrate RESTful APIs including applying secure coding, testing, and deployment practices
• Develop and support applications in a fully AWS-based environment
• Work with container‑based platforms (such as Kubernetes or Amazon Elastic Container Service (ECS))
• Build event‑driven solutions using messaging services
• Manage cloud storage for data and file management
• Contribute to CI/CD pipelines (GitLab)
• Guide and contribute technical decisions through code reviews and mentoring of team members
• Take ownership of features to ensure quality, reliability, and performance

What You'll Bring

• Demonstrated ability to lead the design and building of scalable backend systems, with strong experience in Cloud technologies.
• Strong experience with:
  • C# and .NET (ASP.NET Core)
  • Designing, building and working with APIs
  • Working with Managed Databases (for example, Aurora PostgreSQL or similar relational databases)
• Good understanding of core Cloud concepts, including security, networking, scalability, and high availability.
• Hands‑on experience with AWS Cloud services, such as:
  • Compute and container platforms (for example, EC2, Lambda, ECS, or Kubernetes‑based environments)
  • Storage solutions (for example, S3 or similar)
  • Messaging services (for example, SNS, SQS)
  • Monitoring and logging tools (for example, CloudWatch)
• Experience working with container‑based deployments (for example, Docker).
• Experience using GitLab or similar tools for CI/CD.
• Strong debugging and problem‑solving skills.
• Ability to work effectively in Agile teams.
• Clear communication and collaboration skills.

Desirable Skills (Nice to Have)

• Exposure to microservices architecture.
• Experience improving system observability and monitoring.
• Understanding of application performance, scalability, and optimization in distributed systems.

Benefits

• Opportunity to work on high‑impact with Cloud‑native systems at global scale.
• A collaborative environment that supports learning and continuous improvement.
• Opportunities to grow your technical and cloud expertise.
• The chance to contribute to meaningful work that supports global financial markets.

Career Stage

Senior Associate

Equal Opportunities Employer

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.