Sai Manoj

Experience

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Webhooks Platform

Senior Software Engineer

Sole owner and the DRI engineer for three webhook delivery services that carry about 100 million events a day. I also maintain the authentication middleware on the API Gateway, which handles about 1 billion requests a day.

Designed a new retry mechanism that cut failed deliveries by 30%, and moved webhook processing to a new framework that cut latency by 25%.

Built a monitoring dashboard and debugging tools for on-call, and shared GenAI skills and plugins that speed up root-cause analysis across teams.

The demo is a token bucket, the idea behind rate limiting at a gateway: five tokens, and a new one every two seconds.

Microsoft

Memory use, before and after

Before

After

Drawn to scale: 30% lower.

Defender

Software Engineer II

Led the integration of a partner VPN into Microsoft Defender, a mobile security app, and cut its memory use by 30% to meet product requirements.

Built telemetry and crash reporting for production monitoring, and an on-prem lab to validate anti-phishing detection. Wrote cross-platform test automation in Python and bash for weekly regression runs, and mentored five new hires.

Microsoft

A header rewrite, illustrated

Backend sendsLocation: http://backend-1.internal/cart
RuleReplace the backend host with the public host
Client receivesLocation: https://shop.example.com/cart

Made-up host names.

Application Gateway

Software Engineer II

Application Gateway is a web traffic load balancer. I led the Header Rewrite feature, which lets customers change header values as traffic is routed. I defined the public API contract, took it through design approval, and built the backend logic to run rewrites at scale on a busy gateway.

Took on-call rotations, wrote troubleshooting guides, and mentored four new teammates.

Microsoft

A traceroute, illustrated

Local router2 ms
Network edge9 ms
Transit18 ms
Destination31 ms

Made-up timings.

Network Monitoring

Software Engineer

Wrote the agent for Service Connectivity Monitor in C and C++. It sends pings and traceroutes to check network connectivity and path health. I drove the agent's design and set up its unit and end-to-end tests.

Built the backend for ExpressRoute monitoring with microservices and MapReduce, to process large volumes of network path data, and did the relational data modeling.

Tech stack

Backend

Java, Python, C#The languages I work in
C and C++A network monitoring agent at Microsoft
KafkaThe API Gateway and the webhooks platform at LinkedIn
Microservices, MapReduceExpressRoute monitoring at Microsoft

Cloud

Azure, AWS, CloudflareWhere I deploy and run services
GitHub ActionsCI/CD pipelines I write and fix
Load balancingApplication Gateway at Microsoft

Data

PostgreSQLRelational databases and data modeling
RedisIn-memory data store
DynamoDBNoSQL database

AI agent tooling

GenAI skills and pluginsRoot-cause analysis and alert correlation for webhook workflows

I'm a senior software engineer with about nine years of backend experience, most of it on services that run on public cloud and handle a lot of traffic.

I've worked on a web traffic load balancer, network monitoring and a webhooks platform. Along the way I've mentored new hires and interviewed candidates.

These days I'm building GenAI skills and plugins that help engineers debug faster.

If you're hiring, or building something and want another engineer to talk to, say hello on LinkedIn.

Sai ManojSenior software engineer

Say hello on LinkedIn

Connect with me

Hiring, building something, or just curious? A message is the easiest way in.

Message me on LinkedIn Find me on GitHub