Archishman das

Senior Backend Engineer

India 4+ yrs exp 94 · Outstanding

About

Senior Backend Engineer with over 4 years of experience building REST/OAuth2 API integrations and distributed backend platforms at scale using Redis-backed concurrency, caching, and microservices to keep systems serving 10M+ users fast and reliable. Leverages AI-assisted development tools (ChatGPT, Claude, GitHub Copilot) to accelerate code generation, refactoring, debugging, and engineering productivity.

Skills & Expertise (31)

REST APIs Advanced

8.0/10

Years Exp

Microservices Advanced

8.0/10

Years Exp

Kubernetes Advanced

8.0/10

Years Exp

Docker Advanced

8.0/10

Years Exp

AWS Advanced

8.0/10

Years Exp

Spring Boot Advanced

7.5/10

Years Exp

Java Advanced

7.5/10

Years Exp

Mockito Advanced

7.0/10

Years Exp

JUnit Advanced

7.0/10

Years Exp

OAuth2 Advanced

7.0/10

Years Exp

SonarQube Advanced

7.0/10

Years Exp

Redis Advanced

7.0/10

Years Exp

Jenkins Advanced

7.0/10

Years Exp

Postgresql Advanced

7.0/10

Years Exp

MySql Advanced

7.0/10

Years Exp

Python Intermediate

6.5/10

Years Exp

Kafka Intermediate

6.5/10

Years Exp

JavaScript Intermediate

6.5/10

Years Exp

Grafana Intermediate

6.0/10

Years Exp

Logging Intermediate

6.0/10

Years Exp

Metrics Intermediate

6.0/10

Years Exp

ChatGPT Intermediate

6.0/10

Years Exp

MongoDb Intermediate

6.0/10

Years Exp

Prometheus Intermediate

6.0/10

Years Exp

Elasticsearch Intermediate

6.0/10

Years Exp

RabbitMQ Intermediate

6.0/10

Years Exp

Webhooks Intermediate

6.0/10

Years Exp

Prompt Engineering Intermediate

5.5/10

Years Exp

GitHub Copilot Intermediate

5.5/10

Years Exp

Claude Intermediate

5.5/10

Years Exp

SQLite Intermediate

5.5/10

Years Exp

Work Experience

Senior Software Engineer

Outsourced Quality Assured Services Pty Ltd

Dec 2025 - May 2026

Owned end-to-end architecture and delivery of a high-concurrency booking engine for a cloud-native telemedicine platform, supporting 1,000+ concurrent requests with 100% slot allocation accuracy. Engineered a Redis-backed distributed locking layer to enforce transactional guarantees and eliminate race conditions in clinical booking workflows. Diagnosed and resolved production performance bottlenecks via interceptor-based request tracing, cutting API latency by 40% and database read load by ~70%. Built fault-tolerant recovery mechanisms for failed state transitions, improving system reliability by 25%.

Senior Software Engineer

Nethues Technologies Pvt. Ltd.

Jul 2024 - Nov 2025

Owned backend infrastructure supporting 10M+ users; drove root-cause fixes on customer-facing refund-processing errors, cutting error volume and resolution time by 60%. Led decomposition of a legacy monolith into microservices, improving database performance by 35% and enabling independent, per-service scaling. Designed, built, and maintained 80+ production-grade REST APIs across distributed services, emphasizing OAuth2 authentication, observability, and reliable API integrations. Built CI/CD pipelines and SonarQube quality gates, sustaining 80%+ automated test coverage. Led production incident investigations and cross-service root-cause analysis, strengthening customer-facing reliability workflows.

Software Developer

Necroautomations

Oct 2022 - Jun 2024

Improved response times by 20% by refactoring service layers and optimizing JPA query performance. Contributed to a full-stack product revamp (React, Spring Boot, REST APIs) that increased user retention by 40%.