Sr. Backend Engineer / .Net / Microservices / Lambda / AWS / Distributed Sys. / Remote

About the role

$14000 - $160000

Our client is a Southern California product engineering company building streaming software for media organizations. Its platform supports live and on-demand content across web, mobile, and connected TV. They are seeking a **Senior / Principal .NET Backend Software Engineer** to build and improve the services behind their streaming products.

This is a hands-on role focused on C#/.NET, distributed systems, and AWS. You will develop APIs, event-driven services, and content ingestion workflows while improving the reliability and performance of a large backend platform. Principal-level candidates should also have experience leading the architecture of a substantial backend domain.

Responsibilities

+ Design and build C#/.NET REST APIs, background workers, asynchronous workflows, and service-to-service integrations.

+ Improve microservice architecture, including service boundaries, messaging, retries, circuit breakers, and idempotency.

+ Build and operate services on AWS, selecting containers, serverless, or other compute options based on workload requirements.

+ Support content ingestion, processing, packaging, and delivery workflows for live and on-demand media.

+ Improve observability through metrics, logs, distributed tracing, alerting, and service level objectives.

+ Build security into services using authentication, role-based access, secrets management, and secure communication.

+ Guide technical decisions and help resolve complex production issues across services.

**Required Experience**

+ Advanced, hands-on C#/.NET experience building and operating production backend platforms, including APIs, background processing, and asynchronous workflows.

+ Experience with microservices at meaningful scale, including independently deployed services, event-driven design, queues, failure handling, and production observability.

+ Strong AWS experience building and operating production systems using services such as ECS/Fargate, EKS, Lambda, API Gateway, SQS, SNS, EventBridge, RDS/Aurora, DynamoDB, S3, CloudFront, IAM, or CloudWatch.

+ Sound judgment about serverless and container-based architecture, including performance, concurrency, runtime limits, operational needs, and cost.

+ Experience with a relational database such as SQL Server or PostgreSQL, a NoSQL database, and a cache such as Redis.

+ Hands-on experience with OAuth 2.0 or OIDC, JWT, role-based access control, secrets management, Docker, and CI/CD.

+ Experience managing AWS infrastructure through Terraform, CloudFormation, or similar tools.

**Strongly Preferred**

+ Production experience with Kafka or a comparable event streaming platform.

+ Kubernetes experience in addition to strong AWS platform experience.

+ Experience with high-throughput systems, media workflows, job orchestration, or multi-tenant SaaS.

+ A record of improving the cost, reliability, or performance of an existing AWS platform.

+ For Principal-level candidates, experience setting architecture for a substantial backend domain.

**Nice to Have**

+ Snowflake or analytics pipeline experience.

+ Familiarity with streaming, transcoding, or CDN technology.

+ Go experience.

**The Offer:**

+ **$140,000–$160,000 base salary**

+ Bonus incentives based on individual and company performance

+ Full benefits

+ Stock options

+ 401(k) match

Motion Recruitment Partners (MRP) is an Equal Opportunity Employer. All applicants must be currently authorized to work on a full-time basis in the country for which they are applying, and no sponsorship is currently available. Employment is subject to the successful completion of a pre-employment screening. Accommodation will be provided in all parts of the hiring process as required under MRP’s Employment Accommodation policy. Applicants need to make their needs known in advance.

Posting text as published by Kelly Services.

The evidence behind this listing

Workplace

Remote Matched in posting text

Seniority

senior From the job title

Employment type

full time

Location as listed

Newport Beach, CA

Pay and work authorization

Stated pay

$140k–160k/yr AI reading of the posting

Visa sponsorship

Not offered

Security clearance

Not established

Citizenship

Not established