Backend systems that
hold up under load.
I'm Anurag Kumar Singh — a senior backend engineer with 4+ years building scalable, fault-tolerant systems in Go, Java and Python. Event-driven architecture, microservices, and high-volume document and data pipelines. Most recently: a no-code automation platform handling 1M+ tasks a month at under 200ms.
Things I've shipped and run
Not demos. These are deployed, running on real infrastructure, and reachable right now.
Cloud Guard
Connects to an AWS account through a read-only IAM role and reports what is costing money for no reason — unattached EBS volumes, idle Elastic IPs, stale snapshots, gp2 volumes that should be gp3. Every finding is priced from AWS list prices and comes with the exact CLI command to fix it.
Data Guard
Validates API payloads and SQL rows against declarative rules, pushing the checks down into SQL instead of pulling every row back. Alerts only when a check flips state, so the channel stays readable. Catches silent data failures before downstream logic acts on them.
Shield
A Go rate limiter for APIs, with sliding-window and token-bucket strategies over either Redis or an in-memory store. Built to make the enforcement decision cheap enough to sit in the request path.
Where I've worked
Anota — No-Code Automation Platform
Led end-to-end development of an event-driven automation platform for workflow orchestration with custom rules. Built IAM, Notifications (SMS, Email, In-App), Monitoring and Proxy services. Scaled to 1M+ monthly tasks at under 200ms response time, deployed via GitHub Actions CI/CD on GCP.
DataInsight Engine
Built a pipeline to ingest and visualise structured data, using Apache Spark and Iceberg for processing and Superset for dashboards. Integrated document classification and custom processing workers.
DQF — Driver License Verification System
Automated document verification through REST APIs and Excel uploads, with RabbitMQ driving async workflows. Processed 100K+ verifications a month.
OnboardVerify — Client Onboarding System
A variant of DQF for broader onboarding scenarios, with enhanced validation logic and workflow branching.
OpsDash — Realtime Monitoring Dashboard
Internal dashboard tracking task execution and system health using concurrent goroutines and NSQ-based messaging.
What I work with
Languages
Frameworks & Tools
Data Platforms
Cloud & CI/CD
Messaging & Queues
Monitoring & Infra
Concepts
Education & Certs
Let's build something that scales
Open to senior backend roles and selective freelance work. Based in Gurugram, India.