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Software Engineer

Krish Srivastava

Software Development Engineer I @ PhysicsWallah

Backend-focused engineer building platforms, distributed systems, and developer tooling. I write about what I ship on this site.

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Krish Srivastava
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About

Hi, I'm Krish.

I'm a software engineer focused on backend systems, internal platforms, and the craft of code that other people can extend without frustration.

At PhysicsWallah I work on an Internal Developer Platform — service onboarding, GitLab integrations, Kafka pipelines, RBAC, and self-service workflows that help teams ship faster.

I care about distributed systems, observability, load testing at scale, and turning operational pain into reusable tooling. This blog is where I think out loud about what I build.

Outside of work you'll find me reading, walking without a destination, or contributing to open source in the Go ecosystem.

Education

B.Tech Computer Science & Engineering

SRM University, AP · 2021 – 2025 · CGPA 7.99

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Experience

Where I've built

Platform engineering, reliability, and developer experience at scale.

Mar 2025 – Present

Software Development Engineer I

PhysicsWallah · On-site

  • ▸Internal Developer Platform (Go, GraphQL, PostgreSQL): service onboarding, GitLab, Kafka, RBAC, self-service workflows
  • ▸Modular workflow engine for platform operations
  • ▸JMeter → k6 migration; Jenkins load-test automation at Vishwas Diwas scale
  • ▸MongoDB → Aerospike migration POC; API consolidation into dedicated microservice
  • ▸AI-assisted incident investigation (Zenduty, Prometheus, Elastic APM, K8s, RAG over Confluence, OpenAI SDK)
  • ▸Internal Go libraries (k6 → Postman converter; planned OSS release)

Projects

Selected work

Systems I've designed and shipped — from distributed storage to full-stack products.

Open Source

Contributions

Patches and improvements upstream in the Go ecosystem.

redis/go-redis

Cluster routing optimizations

Refactored cmdFirstKeyPos using cached COMMAND INFO; lock-free Peek(); fewer cluster routing lookups on hot paths.

View Pull Request
hashicorp/go-set

TreeSet.EqualSliceSet

Added sort-and-compare equality for slice sets vs RB-tree allocation — cleaner API for set comparisons in Go.

View Pull Request

Skills

Tech stack

Languages, platforms, and tooling I work with day to day.

Languages

GoJavaScriptTypeScriptSQL

Backend & Infra

gRPCRESTGraphQLEntRedisPostgreSQLClickHouseKongNginx

SRE & DevOps

LinuxDockerKubernetesAWSArgoCDJenkinsGitLabELKGrafana

Other

MachineryPrometheusDistributed systemsObservabilityLoad testing

Writing

Latest from the blog

Essays on code, systems, and whatever else I'm thinking about.

View all posts
Analytics Without Google Analytics (or Any Third-Party Tracker)
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tech

Analytics Without Google Analytics (or Any Third-Party Tracker)

Building First-Party Analytics: No Google, No Plausible, No Cookie Banner I run my blog on Next.js, Go, Postgres, and Redis. No third-party trackers. Here's how a fire-and-forget event pipeline (Browser -> Go API -> Redis queue -> Postgres) gives me page views, scroll depth, read time, and referrers without shipping a single tracking script to readers. Plus: the PgBouncer + prepared statements bug that took down my overview endpoint, and how I built email notifications.

August 8, 2026·3 min read