Santosh Kafle
DevOps Engineer | Backend Developer
Summary
DevOps and backend engineer with hands-on experience running containerized environments, CI/CD pipelines, and Linux servers behind high-traffic e-commerce platforms and RESTful APIs. Skilled in Docker, Nginx, Prometheus and Grafana, Laravel, NestJS, and PostgreSQL. Proven track record of improving query performance by 70%, achieving sub-300ms API response times, and maintaining zero security breaches across production systems.
Technical Skills
Languages: PHP, JavaScript, TypeScript
Frameworks: Laravel, NestJS, Express.js
Databases: PostgreSQL, MySQL, MongoDB, Redis, Meilisearch
DevOps & Tools: Docker, Docker Compose, Linux, Bash Scripting, Nginx, CI/CD, GitHub Actions, Prometheus, Grafana, AWS, Server Security, Cloudflare DNS, Incident Response, Git, Composer, Postman, DataGrip, PhpStorm
Other: RESTful APIs, Microservices, OAuth2, JWT, OWASP Top 10, Clean Architecture, Design Patterns, SOLID Principles, Database Optimization
Work Experience
Backend Developer – Quark InfoTech, Lalitpur
Apr 2025 – Feb 2026
- Led incident response on a compromised React SSR host: removed a cryptocurrency miner, rotated all environment credentials, and hardened the server
- Containerized development and production environments with Docker, provisioning PostgreSQL and Nginx for parity across deployments
- Administered Linux hosts and configured Cloudflare DNS (SPF, DKIM, DMARC) for an automated 2FA mail flow; rate-limited auth endpoints against brute-force attempts
- Migrated production databases from MySQL to PostgreSQL, improving query performance by 70% through indexing and optimization
- Built e-commerce backends (zolpastore.com, ultima.com.np, singingbowlvillagenepal.com) with Redis caching and Meilisearch, sustaining sub-300ms responses for thousands of daily users
Backend Developer Intern – Quark InfoTech, Lalitpur
Jan – Mar 2025
- Developed RESTful microservices with Laravel and Node.js using JWT auth and rate limiting, serving 250+ daily API consumers
- Wrote comprehensive API documentation covering 15+ endpoints, reducing onboarding time for frontend team
- Shipped production features for e-commerce backends including product filtering, pagination, and order processing workflows
Projects
Multi-Service Deployment
Docker, Docker Compose, Nginx, Express, MongoDB, RedisFive-container stack behind one Nginx proxy with an internal-only network, multi-stage builds, and non-root containers
Prometheus & Grafana Monitoring
Prometheus, Grafana, Node Exporter, Docker, LinuxMetrics stack with file-provisioned Grafana dashboards and datasources, PromQL panels, and bounded retention
zolpastore.com
Laravel, Redis, Meilisearch, PostgreSQL, MySQL, DockerE-commerce platform with Redis caching, Meilisearch search, OAuth auth, event-driven architecture
ultima.com.np
PHP, Laravel, MySQL, Docker, GETPAYE-commerce backend with optimized APIs, GETPAY payment integration, high-traffic infrastructure
singingbowlvillagenepal.com
PHP 8.4, Laravel 12, PostgreSQL, GETPAYE-commerce site built with latest PHP & Laravel, migrated MySQL → PostgreSQL
iteam.com.np
Laravel, PostgreSQL, Docker, DeploymentSupported setup, planning, and initial-phase backend work; Docker-based environment, database provisioning
Education
Bachelor's of Computer Applications (BCA) – Reliance College, Kathmandu
2020 – 2025
High School Diploma, Computer Science – Reliance International Academy
2018 – 2019
Engineering Practices
- Reproducible Docker environments, dev/prod parity
- CI/CD deployments from version-controlled config
- Metrics and dashboards provisioned as code, not clicked
- Non-root containers, pinned tags, minimal exposed surface
- SOLID principles, design patterns, clean architecture
- Versioned REST APIs with consistent error contracts
- Query, index, and cache tuning with Redis in front
- Security by default: validation, least privilege