SDE-I @ Publicis Sapient · AWS Certified · IIT Bhubaneswar (ECE, 2021)
GitHub: BitanSarkar · LeetCode: @bitanSarkar1997
Java Go Python C SQL JavaScript
Spring Boot Spring WebFlux WebSphere (WAS) Node.js
AWS (API Gateway, Lambda, DynamoDB, CloudWatch, EventBridge, S3, CloudFront, EC2, Cognito)
Kubernetes ArgoCD Terraform OpenVPN
DynamoDB Oracle DB Neo4j
GitLab CI/CD SonarQube JaCoCo Docker eBPF/libbpf Bruno
SAML OIDC SOAP REST GraphQL OAuth2 / SSO
Software Development Engineer I — Publicis Sapient (4+ years)
- Core contributor to the Omantel telecom platform and PTT t-ecosys projects
- Built reactive microservices using Spring WebFlux for non-blocking, high-throughput API pipelines
- Integrated SAML/Theqa + Cognito identity flows including OTP-only login, custom authentication providers,
EmailVerificationSessionIdcookie flow, LTPA generation without WAS, and social login - Engineered AWS API Gateway configurations and Cognito user pool integrations for auth v2 architecture
- Managed DynamoDB table migrations (52 tables,
eu-central-1→eu-west-1) and resolved Arabic text encoding issues incontainsqueries - Wrote CloudWatch Logs Insights queries for ArgoCD sync log analysis and operational monitoring
- Handled Oracle SQL migrations including
OCP_DATA_ROAMINGschema changes - Processed YAML/JSON product catalog configs (BaqatiUsagePlan,
MOBILE_CONFIG) for telecom product management - Implemented SOAP envelope wrapping for telecom resource management APIs
- Worked on static asset delivery pipelines via S3 + CloudFront (HTML/CSS cleanup for Omantel privacy policy)
KCPM — C-based Kubernetes Process Monitor
- Kernel-level process monitoring for Kubernetes pods using eBPF/libbpf
- Evolved from the
pidwatcherconcept; targets open-source kernel contribution
- Go-based API gateway for LLM routing with Redis rate limiting
- Designed for multi-model orchestration and quota enforcement
- Full Terraform automation for EC2 + OpenVPN provisioning
- Includes a VPN cloaking CLI tool for obfuscated tunnel management
- Serverless architecture using AWS Lambda + EventBridge
- Auto-polling with event-driven status notifications
- Built with Python + Selenium, OpenAI for tone analysis
- JSON context memory logging for conversation continuity
- Native Android application for campus navigation (IIT Bhubaneswar)
- Designed URL shortener (widely-read article on LinkedIn)
- Explored GraphQL architecture patterns:
stale-while-revalidate+ subscription,@deferdirective - Studied Google's internal infrastructure evolution: MapReduce → GFS → Bigtable → Kubernetes
- Actively learning: Dynamic Programming, Graph/Tree algorithms, SQL (beginner → advanced), Blockchain, Neo4j/Cypher
| B.Tech, Electronics & Communication Engineering | IIT Bhubaneswar, 2017–2021 |
| AWS Solutions Architect – Associate | Amazon Web Services |
Campus involvement: IIT BBSR Coding Society · Chamber of Product
- FAANG/Top Product Company transition prep (30-day structured DSA + System Design + AI/ML roadmap)
- Six tailored resume versions targeting different FAANG roles
- Building positioning as: "Systems Engineer specialized in infrastructure for AI/ML systems"
- Active on LeetCode for DSA, writing on Medium for technical content
- LeetCode (
@bitanSarkar1997): Keeping mind sharp - LinkedIn: URL shortener system design (widely read)
- Quora: Tech Q&A contributions
- Writing an 11-chapter historical documentary on the evolution of physics and mathematics (1850–1950), covering thermodynamics, electromagnetism, relativity, and the foundations of logic
Open to conversations about distributed systems, cloud-native architecture, and AI/ML infrastructure.