Backend & Distributed Systems Engineer • 2+ years experience
I build production-grade backend systems, developer tools, and distributed infra.
I'm a backend engineer focused on high-performance systems, developer tooling,
payments automation, infra pipelines, and clean, extensible low-level design.
I enjoy designing reliable backend components, exploring systems internals,
and building tools that make engineering simpler and safer.
I also actively teach and compete in algorithmic programming.
A minimal, type-safe configuration library for Node.js with zero boilerplate and zero runtime overhead.
📦 npm: https://www.npmjs.com/package/@semicolon-systems/envx
📌 Repo: https://github.com/semicolon-systems/envx
The core engine powering SQL analysis features like normalization, fingerprinting, sanitization, and EXPLAIN parsing + heuristics.
📌 Repo: https://github.com/semicolon-systems/sql-playground-engine
Languages: Java, Python, Go, Ruby, TypeScript
Frameworks: Spring Boot, FastAPI, Fastify (Node), React
Datastores: DynamoDB, PostgreSQL, Redis, MySQL
Cloud & Infra: AWS (Lambda, Batch, SQS, SNS, S3), Docker, Terraform, Helm, OpenSearch
Specialties:
- Low-Level Design (LLD)
- Distributed Systems
- High-volume pipelines
- Observability (metrics, structured logging, tracing)
- Developer tools
- Expert — Codeforces
- 4★ — CodeChef
- Guardian (Top 1.3%) — LeetCode
- AIR 8 / Global 70 (31k participants) — LeetCode Weekly
- Strong finishes across Codeforces, LeetCode, Kickstart, HashCode
CP shaped my thinking around correctness, optimization, and clean abstraction.
- Taught Dynamic Programming to 40+ students
- Solved 125+ doubts as a CodeChef Doubt Solver
Teaching helps me distill complex ideas into simple explanations.
- Email: dhananjaymahtha29@gmail.com
- LinkedIn: https://linkedin.com/in/dhananjaymahtha29
⭐ If you like my work, consider starring the repos!