Senior Software Engineer (Cloud Native NTN Applications)

Viasat; Chennai District; On-site; INR 3,500,000 - 6,000,000; Full time

Job summary

Viasat is building a state-of-the-art 3GPP NTN NTN-based LEO network ecosystem. The RAN Apps team owns AI-native, cloud-hosted applications that configure, monitor, and optimize the performance of the satellite network, interfacing with DU, CU, RIC, and SMO components.

You will own end-to-end development, from requirements refinement to design, development, and system integration, contributing to robust, scalable, and observable production systems across a hybrid work environment.

Qualifications

• 6–10 years of hands-on experience building and operating large-scale cloud-native distributed applications.
• Deep understanding of distributed systems concepts including scalability, fault tolerance, high availability, resiliency, consistency models, eventual consistency, and idempotent processing.
• Experience designing data-intensive systems using relational and NoSQL databases.
• Deep understanding of event-driven architectures, including asynchronous messaging, event streaming, pub/sub patterns, and event sourcing concepts.
• Strong experience designing and implementing RESTful APIs and service-to-service communication patterns in distributed environments.
• Proven ability to build highly reliable and observable production systems, including monitoring, logging, tracing, disaster recovery, and incident resolution.
• Good understanding of Terrestrial and/or Satellite wireless system, SMO and RIC frameworks

Responsibilities

• Refine initial requirements through brainstorming with peers in the team and external stakeholders.
• Develop Architecture and Design for AI native, Cloud hosted intelligent RAN applications utilizing O-RAN framework, system performance, scalability and maintainability aspects.
• Develop test plans covering configuration, performance, stability, interoperability
• Implement the design with the support of AI productivity tools
• Test the applications at various level - unit, module, subsystem, system
• Integration with other network components (DU, CU, RIC, SMO)
• Maintain and automate CI/CD pipelines for build/testing/deployments
• Support production & lab environments aligned with team's responsibility
• Update and maintain existing production applications and networks

Skills

Golang

Python

Distributed systems

REST APIs

Event-driven architectures

O-RAN knowledge

Education

Bachelor's degree in Computer Science, Engineering, or equivalent

Tools

Docker

Kubernetes

Kafka

Amazon Kinesis

Google Pub/Sub

RabbitMQ

GitHub Actions

Jenkins

GitLab CI

Terraform

Helm

ArgoCD

CloudFormation

Job description

About us

One team. Global challenges. Infinite opportunities. At Viasat, we're on a mission to deliver connections with the capacity to change the world. For more than 35 years, Viasat has helped shape how consumers, businesses, governments and militaries around the globe communicate. We're looking for people who think big, act fearlessly, and create an inclusive environment that drives positive impact to join our team.

What you'll do

Viasat is developing a 3GPP NTN standards-based Low Earth Orbit (LEO) Network to support standard based devices across key use cases such as Direct to Device, Automobile and UAVs.

RAN Apps team is responsible for the development of an ecosystem of AI native, Cloud hosted intelligent applications to configure, monitor and optimize the performance of Viasat's LEO based satellite network especially that of the RAN subsystem in it, and integrate the ecosystem with the complete satellite ground network. These applications interface with various components of O-RAN based NTN network - RU, DU, CU, RIC, SMO etc.

Team member responsibilities are end-to-end ownership of one or more intelligent RAN applications, from requirements refining to design, development and system integration.

This is a site-based role, employees work 3+ days (60%+) per week from a Viasat office or work location within a standard five-day workweek.

The day-to-day

• Refine initial requirements through brainstorming with peers in the team and external stakeholders.
• Develop Architecture and Design for AI native, Cloud hosted intelligent RAN applications utilizing O-RAN framework, system performance, scalability and maintainability aspects.
• Develop test plans covering configuration, performance, stability, interoperability
• Implement the design with the support of AI productivity tools
• Test the applications at various level - unit, module, subsystem, system
• Integration with other network components (DU, CU, RIC, SMO)
• Maintain and automate CI/CD pipelines for build/testing/deployments
• Support production & lab environments aligned with team's responsibility
• Update and maintain existing production applications and networks

What you'll need

• Bachelor's degree in Computer Science, Engineering, or equivalent
• 6-10 years of hands-on experience building and operating large-scale cloud-native, microservices-based, event-driven, distributed applications.
• Deep understanding of distributed systems concepts including scalability, fault tolerance, high availability, resiliency, consistency models, eventual consistency, and idempotent processing.
• Experience designing data-intensive systems using relational and NoSQL databases.
• Deep understanding of event-driven architectures, including asynchronous messaging, event streaming, pub/sub patterns, and event sourcing concepts.
• Strong experience designing and implementing RESTful APIs and service-to-service communication patterns in distributed environments.
• Proven ability to build highly reliable and observable production systems, including monitoring, logging, tracing, disaster recovery, and incident resolution.
• Good understanding of Terrestrial and/or Satellite wireless system, SMO and RIC frameworks

Technical Expertise:

• Strong programming skills preferably in Golang or Python
• Containerization and orchestration using Docker and Kubernetes.
• API design and integration, including REST APIs, API versioning, backward compatibility, contract-first development, API gateways, authentication, authorization, rate limiting, and resiliency patterns.
• Event streaming and messaging technologies such as Kafka, Amazon Kinesis, Google Pub/Sub, RabbitMQ, or equivalent.
• Public cloud platforms such as GCP and/or AWS.
• CI/CD and DevOps tooling, including GitHub Actions, Jenkins, GitLab CI, or equivalent.
• Deployment automation using Terraform, Helm, ArgoCD, CloudFormation or similar.

#LI-VSAT

What will help you on the job

• Good understanding of O-RAN specifications, rApps,xApps development
• Hands on development experience with Golang/Python/Rust/Scripting/Cl-CD in public cloud environment

EEO Statement

Viasat is proud to be an equal opportunity employer, seeking to create a welcoming and diverse environment. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, ancestry, physical or mental disability, medical condition, marital status, genetics, age, or veteran status or any other applicable legally protected status or characteristic. If you would like to request an accommodation on the basis of disability for completing this on-line application, please click here.