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Kushagra Srivastava

@kushagrasrivastava3

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I build reliable systems software, developer tooling, and scalable backend platforms.

India

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What I'm looking for

I'm looking to build reliable systems, backend platforms, developer tooling, or open-source infrastructure where I can work close to performance, security, concurrency, and reproducible engineering environments.

I contributed kernel and userland security tooling to FreeBSD through Google Summer of Code, refactoring mac_do(4) for concurrency-safe credential transition rules and extending mdo(1) with diagnostic and identity-control features.

At AfterQuery Experts, I build containerized terminal tasks, validation scripts, and reproducible Linux environments for training and evaluating agentic AI models. Previously at ToolJet, I shipped a ClickUp integration, improved BigQuery reliability, and standardized error reporting across 15+ plugins.

I also build scalable backend systems, including a stateless file upload platform using TypeScript, PostgreSQL, Redis, BullMQ, Fastify, and Docker. My open-source work includes Chaos Mesh and Rocket.Chat, alongside graphics work in Rust, C++, OpenGL, and GLSL.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

AfterQuery Experts

Sep 2025 - Present (1 year)

Built 15+ terminal-driven coding tasks with deterministic test environments and containerized setups to train and assess agentic AI models. Designed reliable test cases, validation scripts, and environment patches to ensure reproducibility and maintain benchmark quality.

Python BASH Linux Docker Test Engineer Containerization AI Model Assessment

Kernel & Userland Developer

FreeBSD

May 2025 - Aug 2025 (3 months)

Worked on mac_do(4), a FreeBSD kernel module for defining and enforcing credential transition rules and security policies. Refactored mac_do(4) to use a unified struct conf, extended mdo(1) with UID/GID overrides, and integrated ATF tests.

C Mac Shell ATF FreeBSD Kernel Development Concurrency Security Policies

Back-end Developer Intern

ToolJet Pvt. Ltd.

Mar 2025 - Jun 2025 (3 months)

Worked on ToolJet, an open-source low-code platform. Built and shipped the ClickUp plugin, enhanced the BigQuery plugin, standardized error reporting across 15+ plugins, and contributed production-ready features to the YC-backed OSS platform.

TypeScript NodeJS PostgreSQL Plugin Development Error Handling REST APIs Open Source