Open to opportunities

Chetan Gajbe

@chetangajbe

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Software engineer building secure distributed cloud systems with AWS, Azure, and DevOps.

India

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What I'm looking for

I’m looking for a role where I can build secure, high-availability distributed services in AWS/Azure, own CI/CD and infrastructure automation, and improve reliability through observability, incident response, and thoughtful security design.

I’m a software engineer with 2+ years designing and delivering secure, mission-critical distributed systems at scale on AWS, with working knowledge of Azure. I’ve built production services supporting thousands of users, including identity/access and alert processing systems with uptime around 99.5%. I ground technical decisions in clear justification, observability, and data—especially when security and reliability matter.

My day-to-day blends backend engineering (C#, Python with FastAPI/Flask/Django, REST APIs) with cloud and operations—Terraform, Kubernetes, Docker, and zero-downtime CI/CD using GitHub Actions. I’ve led live site reliability operations, RCA documentation, and cross-team design/code reviews, while applying cryptography and access control fundamentals like JWT authentication, role-based access control, OAuth 2.0, and RSA/AES concepts.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer (Distributed Systems)

Current

Amgen India

Jun 2024 - Present (2 years 2 months)

Designed secure, high-availability microservices for an identity and access management platform, implementing JWT authentication, RBAC, and PostgreSQL-backed data management (98.5% SLA). Built and operated distributed alert-processing services and automated CI/CD with GitHub Actions, Docker, Terraform, and Kubernetes to improve uptime and deployment speed.

OAuth 2.0 Authorization Server

Personal Project

Jul 2026 - Present (1 month)

Built a production-grade OAuth 2.0 authorization server using the authorization code flow with PKCE, issuing RSA-signed JWT access tokens with scope-based permission enforcement. Implemented token introspection and revocation with a Redis-backed token registry and deployed via FastAPI with Docker and GitHub Actions.

Authorization Code Flow JWT RSA Token Scope Based Authorization Token Introspection Token Revocation Redis Token Registry Session Management fastAPI Docker GitHub Actions Pytest PostgreSQL OAuth

JWT Auth & Secrets Manager

Personal Project

Jun 2026 - Present (2 months)

Built a production-grade cryptographic service for secure API authentication, including RSA key generation, JWT signing/verification (RS256), and automated key rotation with encrypted secret storage. Added RBAC, rate limiting, audit logging, and Redis-based token blacklisting, deployed via FastAPI with Docker and GitHub Actions.

JWT RSA (RSA 2048)RSA Signing Verification (RS256)Cryptography Secret Management Key Rotation Role Based Access Control RBAC Rate Limits Audit Logging Redis fastAPI Docker GitHub Actions Pytest PostgreSQL

Distributed Rate Limiter & API Gateway

Personal Project

Oct 2025 - Present (10 months)

Designed a distributed API gateway implementing Redis-backed token bucket rate limiting with per-user and per-IP throttling. Added circuit breaker fault tolerance and observability via Grafana and Prometheus, packaged with Docker Compose and automated using GitHub Actions.

API Gateway Redis Token Bucket Per IP Throttling Fault Tolerant Communication Observability Grafana Prometheus Docker Compose Docker fastAPI GitHub Actions Performance Testing Pytest PostgreSQL

Secure File Encryption API

Personal Project

Mar 2025 - Present (1 year 5 months)

Built a file encryption service using AES-256-GCM and integrated it with Azure Blob Storage for persistent, cloud-native storage. Implemented per-user, role-based access control with integrity checks (HMAC), audit logging, and automated CI/CD with FastAPI, Docker, and GitHub Actions.

AES 256 GCM Encryption Azure Blob Storage Cloud Storage Role Based Access Control RBAC Per User Encryption Keys HMAC Integrity Checks Audit Logging PostgreSQL fastAPI Docker GitHub Actions Pytest

User Identity Management Dashboard

Amgen India

Designed and delivered a secure, distributed identity management system for enterprise users, implementing JWT authentication, RBAC, and PostgreSQL-backed data management with Redis caching. Built high-throughput REST APIs and automated testing to achieve strong security and unit/integration coverage.

Identity Management Distributed Systems JWT Role Based Access Control RBAC REST APIs PostgreSQL Redis Docker fastAPI Security Testing Pytest Unit Testing Integration Testing

Education

Degrees, certifications, and relevant coursework

University of Mumbai

Bachelor of Engineering (B.E.), Cyber Security

Grade: CGPA: 7.32/10

Bachelor of Engineering (B.E.) in Cyber Security from the University of Mumbai, graduating in May 2024. Relevant coursework included Cryptography, Network Security, Distributed Systems, Cloud Computing, and Operating Systems.